Home

1620A User Manual

1. ROUTe CLOSe lt chn gt Enables the specified channel Section 8 2 5 2 ROUTe OPEN lt chn gt Returns the channel state Section 8 2 5 3 ROUTe OPEN lt chn gt Disables the specified channel Section 8 2 5 4 SENSor AVERage Returns the state of the measurement averaging Section 8 2 4 3 SENSor AVERage lt bool gt Enables or disables the measurement averaging Section 8 2 4 4 SENSor lt chn gt LOCK Returns the state of the sensor lock for the specified channel Section 8 2 4 5 SENSor lt chn gt LOCK lt bool gt Enables or disables the sensor lock for the specified channel Section 8 2 4 6 SENSor lt chn gt IDENtification Returns the sensor identification for the specified channel Section 8 2 4 7 SENSor lt chn gt IDENtification lt str gt Sets the sensor identification for the specified channel Section 8 2 4 8 SENSor lt chn gt STATus Returns the sensor status for the specified channel Section 8 2 4 9 STATus ALARm Returns and clears the alarm status event Section 8 4 11 9 STATus ALARm CONDition Returns the alarm status condition Section 8 2 11 10 STATus ALARm ENABle Returns the alarm status enable Section 8 2 11 11 STATus ALARm ENABle lt num gt IMINIMAXIDEF Sets the alarm status enable Section 8 2 11 12 STATus MEASure Returns and clears the measurement status event Section 8 2 11 13 STATus MEASure CONDition Returns the measurement status condition Section 8 2 11 14 STATus MEASure ENABle Returns the measurement
2. ALARm RHUMidity lt chn gt RATE ENABle lt bool gt Enables or disables the humidity rate alarm for the specified channel Section 8 2 1 25 ALARm RHUMidity lt chn gt RATE LIMit 72 Returns the humidity rate alarm limit for the specified channel Section 8 2 1 26 8 Digital Communications Interface Commands Alphabetical List Commands continued Command Description Refer To ALARm RHUMidity lt chn gt RATE LIMit lt num gt IMINIMAXIDEF Sets the humidity rate alarm limit for the specified channel Section 8 2 1 27 ALARm RHUMidity lt chn gt SENSor Returns the state of the humidity sensor alarm for the specified channel Section 8 2 1 28 ALARm RHUMidity lt chn gt SENSor ENABle Returns the state of the humidity sensor alarm enable for the specified channel Section 8 2 1 29 ALARm RHUMidity lt chn gt SENSor ENABle lt bool gt Enables or disables the humidity sensor alarm for the specified channel Section 8 2 1 30 ALARm RHUMidity lt chn gt UPPer Returns the state of the high humidity event for the specified channel Section 8 2 1 31 ALARm RHUMidity lt chn gt UPPer ENABle Returns the state of the high humidity alarm enable for the speci fied channel Section 8 2 1 32 ALARm RHUMidity lt chn gt UPPer ENABle lt bool gt Enables or disables the high humidity alarm for the specified channel Section 8 2 1 33 ALARm RHUMid
3. 84 8 2 1 25 ALARm RHUMidity lt chn gt RATE ENABle lt bool gt o o o 84 8 2 1 26 ALARm RHUMidity lt chn gt RATE LIMit MINIMAXIDEF 85 8 2 1 27 ALARm RHUMidity lt chn gt RATE LIMit lt float gt IMINIMAXIDEF 85 8 2 1 28 ALARm RHUMidity lt chn gt SENSor 2 ee ee 85 8 2 1 29 ALARm RHUMidity lt chn gt SENSor ENABle o o ooo o 85 8 2 1 30 ALARm RHUMidity lt chn gt SENSor ENABle lt bool gt o o 86 8 2 1 31 ALARm RHUMidity lt chn gt UPPer 2 2 o o e e 86 8 2 1 32 ALARm RHUMidity lt chn gt UPPer ENABle o o oo 86 8 2 1 33 ALARm RHUMidity lt chn gt UPPer ENABle lt bool gt o o o o o 86 8 2 1 34 ALARm RHUMidity lt chn gt UPPer LIMit MINIMAXIDEF 86 8 2 1 35 ALARm RHUMidity lt chn gt UPPer LIMit lt float gt IMINIMAXIDEF 87 8 2 1 36 ALARm TEMPurature lt chn gt LOWer 2 oo 87 8 2 1 37 ALARm TEMPurature lt chn gt LOWer ENABle o o o o o 87 8 2 1 38 ALARm TEMPurature lt chn gt LOWer ENABle lt bo0l gt o 87 8 2 1 39 ALARm TEMPurature lt chn gt LOWer LIMit MINIMAXIDEF 88 8 2 1 40 ALARm TEMPurature lt chn gt LOWer LIMit lt float gt IMINIMAXIDEF 88 8 2 1 41 ALARm TEMPurature lt chn gt RATE 2 ee 88 8 2 1 42 ALARm TEMPurature lt chn gt RATE ENABle o o 88 8 2 1 43 ALARm TEMPurature lt chn gt RATE ENABle lt bo
4. 2 0 0004 10 A Quick St tte saca oe ew ae a ere See ave A 4 1 Unpacking s 2b eee be oe eee ek Oe ee eS se Ee Sw S 11 4 2 Use Proper Cares so aoe a a OR ee BR SOE Rw S 11 4 3 Learn About the Features and Components 11 4 4 Install the Battery o 11 4 5 Connect the Sensor socs ccoo uses eG 12 4 6 Connect the Power Source 2 o o 12 4 7 Switch the Power On o o o e 12 4 8 Measure Temperature e 12 5 Parts and Controls 13 5 1 Front Panel s oo 404 nae wads amp be bo be ee 5 13 2 Top Pabelis 3d p k ah bbe ee eee he Ba ee te eS 14 5 3 Right Side Panel coo 4 4 eo a a0 8A6 Se oe Sebo eee He 14 5 4 Left Side Panel eree ar da eee gt Gos 15 5 5 Back Panel daa Be See Su he i BH Acces we 16 5 6 Quick Buttons 2 ee 17 5 7 Configurations csiis s sia g 54 d uae boo bere a de es 17 5 8 ACCESSOMOS e esasi ok ad we oh Go Gogol amp a amp E r A 18 6 General Operation 19 6 1 DC Power Source sens eaa ia aaa 19 ij 6 2 6 3 6 4 6 5 6 6 6 7 6 8 6 9 6 10 6 11 6 12 Battery ory a i Qe ee a a e a EER RS RD RE Dw ee 19 Sensor Configuration 2 siere kier keny 20 Power SwitCh image dee eeanad dew cba BR ee 20 Power On Self Test o 0000 20 Display Contrast xo uscar 45 224 20 Display sos cn a A SS we eS A 21 Alarm Screen cord i 6 Shao oes eed
5. Relative Humidity at Temperature 20 25 C 45 25 C 70 25 C 2626 H Temperature Calibration Points Temperature at Relative Humidity 16 C 45 20 C 45 24 C 45 2626 H Relative Humidity Calibration Points Relative Humidity at Temperature 20 20 C 45 20 C 70 20 C Temperature and Humidity Measurement Errors The temperature and humidity measurement errors for the sensor are obtained at each of the calibration points This test is performed to obtain as found data for the calibration report if necessary and adjustment data and then repeated after adjustments are made to obtain as left data for the calibration report Tem perature measurements are in degrees Celsius For each calibration point Tn and RHn do the following 1 Set the temperature and humidity set point 2 Allow four hours for settling after the temperature and humidity set points are reached before collecting data 9 Calibration Procedure Temperature and Humidity Adjustments 9 5 Measure the temperature with the 2626 probe and compare it with the temperature read from the reference thermometer in the chamber to ob tain the temperature measurement error Terror Tn T 2626 Tn Treference Tn or Measure the relative humidity using the 2626 probe and compare it with the relative humidity read from the chamber to obtain the humidity mea surement error RHerror RHn RH2626 RHn RHchamber RHn Temperatu
6. Returns 1 if settings commands are enabled O otherwise SYSTem COMMunicate SOCKet DHCP Returns the LAN port DHCP setting 0 off or 1 on SYSTem COMMunicate SOCKet DHCP lt bool gt Sets the LAN port DHCP setting 0 off or 1 on applied when the LAN port is subsequently enabled or reset SYSTem COMMunicate SOCKet ENABle Returns the LAN port enable state 0 off or 1 on SYSTem COMMunicate SOCKet ENABle lt bool gt Sets the LAN port enable state 0 off or 1 on or reset Enabling or resetting the LAN port applies current LAN settings This operation may take several seconds to complete 113 1620A DewK Thermo hygrometer User s Guide 114 8 2 8 31 8 2 8 32 8 2 8 33 8 2 8 34 8 2 8 35 8 2 8 36 8 2 8 37 8 2 8 38 8 2 8 39 SYSTem COMMunicate SOCKet GATeway Returns the LAN port default gateway IP address SYSTem COMMunicate SOCKet GATeway lt addr gt Sets the LAN port default gateway IP address applied if DHCP is off when the LAN port is subsequently enabled or reset The address lt addr gt has the format 255 255 255 255 SYSTem COMMunicate SOCKet HTML Returns 1 if the HTML web page is enabled O otherwise SYSTem COMMunicate SOCKet MAC Returns the LAN port s unique 12 digit hexadecimal MAC hardware address SYSTem COMMunicate SOCKet MASK Returns the LAN port subnet mask SYSTem COMMunicate SOCKet MASK lt addr gt Sets the LAN port subnet mask applied if DHCP
7. o o o o 110 8 2 8 1 SYSTem COMMunicate RADio CHANnel o o o e 110 8 2 8 2 SYSTem COMMunicate RADio CHANnel lt num gt 110 8 2 8 3 SYSTem COMMunicate RADio ENABle o o e 110 8 2 8 4 SYSTem COMMunicate RADio ENABle lt bo0l gt o o 110 8 2 8 5 SYSTem COMMunicate RADio INSTrument o o o o 110 8 2 8 6 SYSTem COMMunicate RADio INSTrument lt num gt 110 8 2 8 7 SYSTem COMMunicate RADio MODem o o o o o o 110 8 2 8 8 SYSTem COMMunicate RADio MODem lt nuM gt o o o o 110 8 2 8 9 SYSTem COMMunicate RADio OPTi0dn o o o oo 111 8 2 8 10 SYSTem COMMunicate RADio PAN o o oo e 111 8 2 8 11 SYSTem COMMunicate RADio PAN lt nuM gt o o e 111 8 2 8 12 SYSTem COMMunicate RADio SIGNA o ooo 111 8 2 8 13 SYSTem COMMunicate RADio SNUMber o o o e 11 8 2 8 14 SYSTem COMMunicate SERial BAUD MINIMAXIDEF 111 8 2 8 15 SYSTem COMMunicate SERial BAUD lt baud gt IMINIMAXIDEF 11 8 2 8 16 SYSTem COMMunicate SERial FDUPlex o ooo o 111 8 2 8 17 SYSTem COMMunicate SERial FDUPlex lt bo0l gt 2 2 ee eee 112 8 2 8 18 SYSTem COMMunicate SERial FEED o o oo 12 8 2 8 19 SYSTem COMMunicate SERial FEED lt bo0l gt 0 o o o 12 8 2 8 20 SYSTem COMMunicate SERial LINefeed o o
8. Hart Scientific 9 1620A DewK Thermo Hygrometer User s Guide Rev 650401 Rev 650401 Limited Warranty amp Limitation of Liability Each product from Fluke Corporation Hart Scientific Division Hart is warranted to be free from de fects in material and workmanship under normal use and service The warranty period is one year for the Thermo Hygrometer The warranty period begins on the date of the shipment Parts product repairs and services are warranted for 90 days The warranty extends only to the original buyer or end user customer of a Hart authorized reseller and does not apply to fuses disposable batteries or to any other product which in Hart s opinion has been misused altered neglected or damaged by accident or abnormal con ditions of operation or handling Hart warrants that software will operate substantially in accordance with its functional specifications for 90 days and that it has been properly recorded on non defective media Hart does not warrant that software will be error free or operate without interruption Hart does not war rant calibrations on the Thermo Hygrometer Hart authorized resellers shall extend this warranty on new and unused products to end user customers only but have no authority to extend a greater or different warranty on behalf of Hart Warranty support is available if product is purchased through a Hart authorized sales outlet or Buyer has paid the applicable international pr
9. lt sec ond gt Opens a set of data in memory over the specified date time range for reading Example DAT REC OPEN 2003 9 15 0 0 0 2003 9 15 23 59 59 The first set of lt year gt lt month gt lt day gt lt hour gt lt minute gt and lt second gt pa rameters indicate the from date and time of the block to open This set of pa rameters is optional but if specified all parameters are required If not specified all data in memory is opened for reading The second set of lt year gt lt month gt lt day gt lt hour gt lt minute gt and lt second gt parameters may only be specified if the first set are specified and indicate the to date and time of the block to open This set of parameters is optional but if specified all parameters are required If not specified the to date and time default to the current date and time If not specified the actual time date range of the data will likely in clude more data than requested because fo the sizes of the data blocks in mem ory Use this command in conjunction with the DATa RECord OPEN and DATa RECord READ commands to extract data from memory DATa RECord READ lt num gt Reads a block of data from memory Example DAT REC READ Response lt bytes gt 11 lt binary data gt The lt num gt parameter is optional and defines the group size number of bytes to read from memory If not specified 256 bytes is used as the default group size The r
10. A value of 1 is returned if the power loss alarm is enabled A value of 0 is re turned if the power loss alarm is disabled ALARm POWer ENABle lt bool gt Sets the state of the power loss alarm enable Example ALAR POW ENAB 1 The lt bool gt parameter turns the power loss alarm on 1 or ON or off 0 or OFF This command may be password protected see Section 8 2 10 Pass word Commands ALARm RHUMidity lt chn gt LOWer Indicates whether a lower humidity alarm event has occurred for the specified channel Example ALAR RHUM1 LOW Response 0 The RHUMidity suffix lt chn gt specifies the channel 1 or 2 A value of 1 is returned if a lower humidity alarm event has occurred on the specified channel A value of 0 is returned if a lower humidity alarm event has not occurred on the specified channel ALARm RHUMidity lt chn gt LOWer ENABle Returns the state of the lower humidity alarm enable for the specified channel Example ALAR RHUM1 LOW ENAB Response 0 The RHUMidity suffix lt chn gt specifies the channel 1 or 2 A value of 1 is returned if the lower humidity alarm is enabled A value of 0 is returned if the lower humidity alarm is disabled ALARm RHUMidity lt chn gt LOWer ENABle lt bool gt Sets the state of the lower humidity alarm enable for the specified channel Example ALAR RHUM1 LOW ENAB 1 The RHUMidity suffix lt chn gt specifies the channel 1 or 2 The lt bool gt pa rameter turns the lowe
11. Example ALAR TEMP1 RATE ENAB 1 The TEMPerature suffix lt chn gt specifies the channel 1 or 2 The lt bool gt pa rameter turns the temperature rate alarm on 1 or ON or off 0 or OFF This command may be password protected see Section 8 2 10 Password Commands ALARm TEMPurature lt chn gt RATE LIMit MINIMAXIDEF Returns the temperature rate alarm limit for the specified channel in degrees C or F per hour Example ALAR TEMP1 RATE LIM Response 5 The TEMPerature suffix lt chn gt specifies the channel 1 or 2 The value re turned is always in the current temperature units C or F Specifying the MIN MAX or DEF parameter returns the minimum maximum or default value respectively ALARm TEMPurature lt chn gt RATE LIMit lt float gt MINIMAXIDEF Sets the temperature rate alarm limit for the specified channel in degrees C or F per hour Example ALAR TEMP1 RATE LIM 10 00 The TEMPerature suffix lt chn gt specifies the channel 1 or 2 The lt float gt pa rameter specifies the value for the temperature rate alarm limit The lt float gt value is always in the current temperature units C or F Specifying MIN MAX or DEF parameter sets the temperature rate alarm limit to the minimum maximum or default value respectively This command may be password pro tected see Section 8 2 10 Password Commands ALARm TEMPurature lt chn gt SENSor Indicates whether a temperature sensor alarm event has
12. SYSTem COMMunicate RADio PAN Returns the RF transceiver network PAN ID address SYSTem COMMunicate RADio PAN lt num gt Sets the RF transceiver network PAN ID address applied when the RF trans ceiver is subsequently enabled or reset The address lt num gt has the range 0 to 65535 SYSTem COMMunicate RADio SIGNal Returns the RF transceiver received signal strength This command may take several seconds to complete and return a response The value returned is in dBm If no communication has occurred since the transceiver was enabled or reset no signal strength will have been recorded and the response will be 0 SYSTem COMMunicate RADio SNUMber Returns the RF transceiver s unique 16 digit hexadecimal serial number SYSTem COMMunicate SERial BAUD MINIMAXIDEF Returns the serial port baud rate setting Example SYST COMM SER BAUD Response 2400 Specifying the MIN MAX or DEF parameter returns the minimum maxi mum or default value respectively SYSTem COMMunicate SERial BAUD lt baud gt IMINIMAXIDEF Sets the serial port baud rate setting Example SYST COMM SER BAUD 9600 The lt baud gt parameter can be one of the following values 1200 2400 4800 9600 19200 38400 or 57600 Specifying the MIN MAX or DEF parameter sets the baud rate to the minimum maximum or default value respectively A baud rade of 57600 suspends echo full duplex SYSTem COMMunicate SERial FDUPlex Returns the state of the serial port echo
13. This command reads and clears the Operation Status Event Register The value returned indicates the condition of each of the eight bits of the register by add ing the binary weighted values of each bit The meaning of each bit when set 1 is as follows where 0 is the least significant and 7 is the most significant 0 no measurement Bit 0 Not used Bit 1 Not used Bit 2 Not used Bit 3 Not used Bit 4 Measurement Complete bit Bit 5 Not used Bit 6 Not used Bit 7 Not used Example STAT OPER Response 16 8 2 11 18 STATus OPERation CONDition 128 This command reads the Operation Status Condition Register Reading this reg ister does not affect it The value returned indicates the condition of each of the eight bits of the register by adding the binary weighted values of each bit The meaning of each bit when set 1 is as follows where 0 is the least significant and 7 is the most significant 0 no operation Bit 0 Not used Bit 1 Not used 8 Digital Communications Interface Commands 8 2 11 19 8 2 11 20 8 2 11 21 Bit 2 Not used Bit 3 Not used Bit 4 Measurement complete bit Bit 5 Not used Bit 6 Not used Bit 7 Not used Example STAT OPER COND Response 16 STATus OPERation ENABle This command returns the Operation Status Enable Register see STATus OP ERation ENABle lt num gt command below Example STAT OPER ENAB Response 16 STATus OPERation ENABle lt num gt MINIMAXIDEF This
14. This is done by storing data in blocks headed by product and sensor identifica tion and time information that applies to subsequent measurements up to the start of the next data block A new data block is started when the thermo hy grometer is powered on when record setting parameters are changed and when data is printed or written to a file A new data block is also started when the date or time is set when the date changes and at regular intervals depending on the record period Thus data blocks may contain various quantities of measurements CAUTION When data recording memory fills up the earliest block of data is automatically discarded so recording of the most recent data can continue Data Record The DATA RECORD function allows the setting of the data recording features 39 1620A DewK Thermo hygrometer User s Guide The functions that appear in this menu are RECORD SETTING DATA VIEW DATA PRINT DATA STORAGE and DATA CLEAR AF RECORD move to SETTIHG item enter el accert nee PRINT EXIT return DADA to menu STORAGE TA CLEAR ES ve s SPs A I A A a Figure 21 Data Record Use the A F buttons to select the menu Press the Enter button to select the menu Press the Exit button to cancel any changes and exit to the menu 7 3 1 1 Record Setting 40 The RECORD SETTING function allows you to select what is to be recorded and how often the recording occurs This may be password protected see Sec tion
15. Use the AV buttons to select the sensor to lock The gt buttons are used to select ON or OFF Press the Enter button to save the setting and exit Press the Exit button to cancel any changes and exit to the menu Sensor Cal The SENSOR CAL function allows the sensor parameters to be edited This function is always password protected see Section 7 5 4 PASSWORD If an incorrect password or no password is entered the parameters are displayed but cannot be edited If a correct password is entered the channel sensor model sensor serial number and sensor ID are displayed Select the sensor channel of the parameters to edit and then select the Enter button The sensor parameters are displayed for editing Caution The sensor calibration parameters are critical to the accuracy of the sensor Do not change them see Section 9 Calibration Procedure The lt P buttons are used to select a channel Press the Enter button to save 29 1620A DewK Thermo hygrometer User s Guide the setting and exit Press the Exit button to cancel any changes and exit to the menu EXE 40 5 x ag 08 47 37 09 04 03 RL venr AA a a A A Figure 12 Sensor Channel Select 23 720 40 4 08 47 19 03 0 4 03 P ae ENTER eaten it ee ll a Figure 11 Sensor Cal FT nu T MMT AA ea TAA AA El Li TE E ER FH G ba Li E E ne The lt 4 b buttons are used to edit the parameter value The AV button
16. duplex setting Example SYST COMM SER FDUP Response 1 111 1620A DewK Thermo hygrometer User s Guide 112 8 2 8 17 8 2 8 18 8 2 8 19 8 2 8 20 8 2 8 21 8 2 8 22 A value of 1 is returned if serial port echo duplex is ON A value of 0 is re turned if serial port echo duplex is OFF SYSTem COMMunicate SERial FDUPlex lt bool gt Sets the serial port echo duplex setting Example SYST COMM SER FDUP 1 The lt bool gt parameter turns serial port echo duplex mode on 1 or ON or off 0 or OFF A baud rade of 57600 suspends echo full duplex SYSTem COMMunicate SERial FEED Returns the state of the serial port auto printing Example SYST COMM SER FEED Response 0 A value of 1 is returned if serial port auto printing is enabled A value of 0 if returned is serial port auto printing is disabled SYSTem COMMunicate SERial FEED lt bool gt Sets the state of the serial port auto printing Example SYST COMM SER FEED 1 The lt bool gt parameter turns serial port auto printing on 1 or ON or off 0 or OFF The RST command sets the serial port auto printing to OFF SYSTem COMMunicate SERial LiNefeed Returns the state of the serial port linefeed setting Example SYST COMM SER LIN Response 1 A value of 1 is returned if the serial port linefeed is enabled A value of 0 is re turned if serial port linefeed is disabled SYSTem COMMunicate SERial LiNefeed lt bool gt Sets the state of t
17. lt n gt CALIBRATION EXPIRED Contact an Authorized Service Center to have the sensor recalibrated Check the time date to make sure it is correct POWER DOWN CALCULATION Contact an Authorized Service Center ERROR POWER DOWN SOFTWARE RESET Contact an Authorized Service Center POWER DOWN HARDWARE RESET Contact an Authorized Service Center BUTTONS lt button name gt Check to make sure the buttons are not being pressed Cycle the power Contact an Authorized Service Center Start up Error Messages Error messages may appear after the self test If this happens contact a Hart Scientific Authorized Service Center for assistance 11 Troubleshooting Downloading Recorded Data 11 1 7 11 2 Error Messages during Normal Operation If an error e g math error occurs during normal operation the DewK auto matically goes into a safe state switching off the offending sensor The internal memory of the DewK is cleared of the sensor s information to try to prevent the error from recurring NOTE The ID and calibration parameters stored in the sensor should not be af fected Only the memory of the DewK is cleared not the memory of the sensor An error message and important troubleshooting information will be displayed Record all error messages and information displayed This information will help the Service Center in troubleshooting and solving the problem that has oc curred Without this information it can be di
18. oo ooo o 119 8 2 10 9 SYSTem PASSword RECotd cao sees dee de a OR a 119 8 2 10 10 SYSTem PASSword RECord lt bool gt ooo 119 8 2 10 11 SYSTem PASSword SENSot s co eck eck aog a a aa rr ae ear i R ES 119 8 2 10 12 SYSTem PASSword SENSor lt bool gt co its coe iei n aa ee 120 8 2 10 13 SYSTem PASSword STATistics o oo E ee 120 8 2 10 14 SYSTem PASSword STATistics lt bool gt 2 ooo mo 120 82 10 15 SYSTem PASSword TIME sss i nase ke pha a bie aoe a bo aaa 20 8 2 10 16 SYSTem PASSword TIME lt bool gt 2 1 ee 20 8 2 11 Status Commands ess e aoa isn Gao Bee aa Bea A a 121 ELNE CES sic slic Bs Wag ee a a ie aie dogg aot le Gl a wend 21 S21 AESE pcia o a So dee asks Meera de a eed 21 8 2 11 3 ESE lt num gt IMINIMAXIDEP eee a ee o ee ee 21 82 114 BESAR a aa a SA a beats li Buk a Rk 21 ELIS ASRE A a eb Sub EAA Ge ae valet ie gk RA Bane dus dane wang hat 22 8 2 11 6 SRE lt num gt MINIMAXIDEF scp rania ciane a E ee ee 22 BLAIRI EST a aa A A A A Rd 22 82 11 8 FT ST lt bOOL gt e cir Gok Bok a a eRe ed BoB ae da bss 23 SLALI STATs ALARM S sos a a ted gg aol Bile dole weave Pe dnd eo wily Gok Gide we 125 8 21 10 STATus ALARm CONDition pai aai gd as eee eR Ra cea eee 25 2 11 11 STATus ALARm ENABIe ooo ge a a De ae a 26 8 2 11 12 STATus ALARm ENABle lt num gt IMINIMAXIDEF 26 8 2 11 03 SPATUS MEASUTE botica oF hie a ec a Pe ad ee ee gal del el ans
19. value of 0 is returned if a humidity rate alarm event has not occurred on the specified channel ALARm RHUMidity lt chn gt RATE ENABle Returns the state of the humidity rate alarm enable for the specified channel Example ALAR RHUM1 RATE ENAB Response 0 The RHUMidity suffix lt chn gt specifies the channel 1 or 2 A value of 1 is returned if the humidity rate alarm is enabled A value of 0 is returned if the humidity rate alarm is disabled ALARm RHUMidity lt chn gt RATE ENABle lt bool gt Sets the state of the humidity rate alarm enable for the specified channel Example ALAR RHUMI1 RATE ENAB 1 The RHUMidity suffix lt chn gt specifies the channel 1 or 2 The lt bool gt pa rameter turns the humidity rate alarm enable on 1 or ON or off 0 or OFF 8 Digital Communications Interface Commands 8 2 1 26 8 2 1 27 8 2 1 28 8 2 1 29 This command may be password protected see Section 8 2 10 Password Commands ALARm RHUMidity lt chn gt RATE LIMit MINIMAXIDEF Returns the humidity rate alarm limit for the specified channel in RH per hour Example ALAR RHUM1 RATE LIM Response 5 The RHUMidity suffix lt chn gt specifies the channel 1 or 2 Specifying the MIN MAX or DEF parameter returns the minimum maximum or default value respectively ALARm RHUMidity lt chn gt RATE LIMit lt float gt IMINIMAXIDEF Sets the humidity rate alarm limit for the specified channel in RH per hour Exa
20. 126 8 2 11 14 STATus MEASure CONDition 2 0 0 02 ee ee 27 8 2 11 15 STATus MEASure ENABle oeio ee ee 27 8 2 11 16 STATus MEASure ENABle lt num gt IMINIMAXIDEE 27 SLALI SEATUS OPERAUON cu e dore a ead wee ae RA 128 8 2 11 18 STATus OPERation CONDIUON s s s 6 cw ee o ai ia 28 8 2 11 19 STATus OPERation ENABle o o ee ee 29 8 2 11 20 STATus OPERation ENABle lt num gt IMINIMAXIDEF 04 29 SAA SEATus QUEStionable e ea kia aise Wee WR a ee ee a a a a a je 29 8 2 11 22 STATus QUEStionable CONDition o a 30 8 2 11 23 STATus QUEStionable ENABle o 30 8 2 11 24 STATus QUEStionable ENABle lt num gt IMINIMAXIDEF 30 8 2 12 Date and Time Formats e 131 9 Calibration Procedure 133 9 1 Equipment q tecie eire e Ge e hats 133 9 2 Preparation ooo e aertara 133 9 3 Calibration Points oc ocoro roces scr a 133 9 4 Temperature and Humidity Measurement Errors 134 9 5 Temperature and Humidity Adjustments 135 10 Maintenance 137 11 Troubleshooting 139 11 1 Troubleshooting 2 5 46 er Bee ee ee 139 11 1 1 Incorrect temperature or humidity reading 139 11 1 2 Missing or Scattered Graph Data sos ee soe ee 139 111 3 Blank Sorens ii A a S R or aa a a Aa E 139 11 1 4 Error message atpDOWeT Up s pres
21. 24 DATa RECord READ lt num gt o o o o o ooo ooo 101 8 2 3 25 DATa RECord TIME MINIMAXIDEF o o e 102 8 2 3 26 DATa RECord TIME lt num gt IMINIMAXIDEF o o o ee 102 8 2 4 Measurement Control Commands o o o 102 SLAA INTA ca ii aa e gr craneal ear 102 8 2 4 2 INTViate CONTNUOUS as canica els BA RA A a RO RA 102 SAAS SENSorAVERAge so a sia diese a Gos aise ow wail ee De ja aca A 102 8 2 4 4 SENSor AVERage lt bool gt 0 oo es 102 24 5 SENSorechn gt LOCK 0 2 S00 de eh ie oO eo Gobo a ee odo ol 103 8 24 6 SENSor lt ehn gt LOCK Spools s is ee ate ee AA es RR ee A 103 8 2 4 7 SENSor lt chn gt IDENtification s a s ee eor ee et 103 8 2 48 SENSor lt chn gt IDENtification lt str gt 2 o o e e 103 8249 SENSor lt chi gt STATE e me gaa e a ata Qe SR aA 104 8 24 10 TRIGger TIMer MINIMAXIDEF o o 04 8 2 4 11 TRIGger TIMer lt num gt IMINIMAXIDEF o ooo 104 8 2 5 Channel Commands i se si a aaoi a a aa 0000 eee eee 105 8 2 5 ROUTE CLOSe lt A rica A a a a a da 05 82 92 ROUTE CLOSE lt en gt ecg cuco dea Rhea Seed at Bek Bek a aed 105 82 5 3 ROWTE OPEN lt chn gt vu oh dae A ek hep ae dee ee ee SA ee ed 05 8 2 5 4 ROUTEIOPEN lt Chn gt iog d a eae bom Boe Re Ae ae pe A 05 8 2 6 CalibrationCommands 00 0000 eee ee ee 105 8 2 6 CALibrate lt chn gt ALERt us 25 4 rn cd dara
22. 4 6 8 10 GRAPH SCALE EES pe Al A VERE RE OP PEND mS LOW res A A Fay A oe Me a ENT Figure 18 Graph Scale Select Zone GRAFH SCALE Z0HE i T CENT eats T SCALI aN H EHT 40 000 H SEAL 0 000 TIME 7 DAYS DILUS 4 Figure 17 Graph Scale Use the Enter button to edit and save the new setting Press Exit button to can cel any changes and exit to the menu On the last parameter press the Enter button to exit to the menu 37 1620A DewK Thermo hygrometer User s Guide 7 2 5 Display Reset The DISPLAY RESET function allows all display layouts field data settings and graph scale settings to be reset to original settings This may be pass word protected see Section 7 5 4 Password Figure 19 Display Reset Use the Enter button to reset the display settings Press the Exit button to can cel any changes and exit to the menu 7 3 Data Menu The DATA menu contains functions for recording measurement data and statistics 38 7 Menu Functions Data Menu 7 3 1 The functions that appear in this menu are DATA RECORD and DAILY STATS DATA RECORD DATLY STATS Figure 20 Data Menu Use the A F buttons to select the menu Press the Enter button to select the menu Press the Exit button to cancel any changes and exit to the menu When recording is enabled measurements are stored in memory at the set pe riod The data is highly compressed digitally to achieve a high storage density
23. AV These buttons are used to move among menu items or parameters When editing some numeric or alpha numeric parameters these buttons are used to change a digit or character lt 4 gt These buttons are used to change a value or option when editing a pa rameter When editing some numeric or alpha numeric parameters these but tons are used to move among digits or characters Top Panel The top panel contains the port for attaching the sensor for Channel 1 An op tional extension cable may be used to allow the sensor to be placed in a remote location Figure 2 Top Panel Right Side Panel The right side panel contains the port for attaching the sensor for Channel 2 5 Parts and Controls Left Side Panel 5 4 An optional extension cable may be used to allow the sensor to be placed in a remote location Figure 3 Right and Left Side View Left Side Panel The left side panel consists of from top to bottom the RS 232 port Ethernet LAN port alarm port and DC power socket RS 232 Port The RS 232 port can be used to connect the instrument to a com puter and remotely control and retrieve data from the instrument using a serial RS 232 interface see Sections 7 5 3 1 and 8 The jack accepts a 3 5 mm min lature stereo plug LAN Port This RJ45 socket allows the instrument to be connected to an Ethernet IP computer network to remotely control and retrieve data from the in strument see Sections 7 5 3 3 and 8
24. Commands continued 78 1 Before You Start Symbols Used 1 1 Before You Start Symbols Used Table 1 lists the International Electrical Symbols Some or all of these symbols may be used on the instrument or in this manual Table 1 International Electrical Symbols Symbol Description NU AC Alternating Current N AC DC Battery Mm Mm CE Complies with European Union Directives DC Direct Current Double Insulated Electric Shock Fuse PE Ground Hot Surface Burn Hazard Read the User s Manual Important Information Off On Oei eoi 1620A DewK Thermo hygrometer User s Guide Symbol Description Canadian Standards Association us OVERVOLTAGE Installation CATEGORY II Pollution Degree 2 per IEC1010 1 re CATI fers to the level of Impulse Withstand Voltage protection provided Equipment of OVERVOLTAGE CATEGORY II is energy consuming equipment to be supplied from the fixed installation Examples include household office and laboratory appliances C TIC Australian EMC Mark Y The European Waste Electrical and Electronic Equipment WEEE Directive 2002 96 EC mark E 1 2 Safety Information Use this instrument only as specified in this manual Otherwise the protection provided by the instrument may be impaired The following definitions apply to the terms Warning and Caution e Warning identifies conditions and actions that may pose hazards
25. Digital Communications Interface Commands 8 2 1 6 8 2 1 7 8 2 1 8 8 2 1 9 8 2 1 10 The lt bool gt parameter turns the alarm beep enable on 1 or ON or off 0 or OFF This command may be password protected see Section 8 2 10 Pass word Commands ALARm CLEar Clears the alarm events Example ALAR CLE The alarm clear command clears the alarm events ALARm DATE FIRSt Returns the date of the first alarm event Example ALAR DATE FIRS Response 2003 8 10 The response is returned in the format lt year gt lt month gt lt day gt If no alarm has been triggered the response is 2000 0 0 ALARm DATE LAST Returns the date of the last alarm event Example ALAR DATE LAST Response 2003 8 10 The response is returned in the format lt year gt lt month gt lt day gt If no alarm has been triggered the response is 2000 0 0 ALARm DISPlay ENABle Returns the state of the visible alarm enable Example ALAR DISP ENAB Response 0 A value of 1 is returned if the alarm display is enabled A value of 0 is returned if the alarm display is disabled ALARm DISPlay ENABle lt bool gt Sets the state of the visible alarm enable Example ALAR DISP ENAB 1 The lt bool gt parameter turns the alarm display enable on 1 or ON or off 0 or OFF This command may be password protected see Section 8 2 10 Pass word Commands 81 1620A DewK Thermo hygrometer User s Guide 82 8
26. ES 14 Right and Left Side View 0 o 15 Back Panel RF option shown o o e 17 Man Display ro Eee eed Se ES 25 Main Ment 3 6 24 amp age ba tl ae bh eee eh he ed he 25 Channel MEDI sa oca ei See A SS Bde ee A A 26 Channel Setting ccs ee bd a ae ee SR ee RE ee ew 27 Sensor ID y osa ra adi PSS ESM hoe bee ERS Gs 28 sensor LOCK oes g has bee Gee ee baw Boa a bee a 29 Sensor Cal ara E gers he A oar ere Bi Bee as ds dA de e 30 Sensor Channel Select 2 0 0 0 0 00000 eee ee 30 Display Menu ei e tit Sie tied wo ad eS 31 Display Setting vo 5044444 040444 dh ee eee Bab od 32 Display Layout 4 2 4S 4a A oO 33 Field Data 2 ee a 36 Graph Scale z a 00 dete Se hashed eeSeae Peete es 37 Graph Scale Select Zone ee ee 37 Display Res t soe 3 G8 Soa es Ghd aes aE aa eet aes eG 38 Data Medio boscosas esa a ESE OS 39 D ta RECO icy ere a o a a dc 40 Record Seting sa ag eee ga ga Rede wae ewe Ee oes 41 Data View Begin Time 202000000 42 Data View Numeric Format 0 0 004 42 Data Print s s d 23 ba be O44 so eee GEE OE EEE ER GS 44 Dita Clears 1 das esi hone BS ae Se A he care 45 Data Storage caca eo Pe ae Ss Aa a ok Rae RO 45 Daily Stats s Gabi dd oe a da A a seks 46 Stats Sete 4 456 a ete en bebean ded ane dew waa 4 47 Slats VIEW p esa amp dod SS doe ee ee ees a deo eS de Bs 48 Slats Prine a is scp seh sit cas ae oases e Sle Js Bede
27. Ghee e oa de ahs 06 8 2 6 2 CALibrate lt chn gt ALERt lt bo0l gt 0 o 06 8 2 6 3 CALibrate lt chn gt DATE CALibrate o e cc ecg ace a 106 8 2 6 4 CALibrate lt chn gt DATE CALibrate lt year gt lt month gt lt day gt 06 8 2 6 5 CALibrate lt chn gt DATE DUE ooo we ee 06 8 2 6 6 CALibrate lt chn gt DATE DUE lt year gt lt month gt lt day gt 048 07 3 2 6 7 CALibrate lt chn gt EXPired quis rc lw Ge ee ew e ee 07 8 2 6 8 CALibrate lt chn gt PARameter OFFSet lt nudm gt o o o o 107 8 2 6 9 CALibrate lt chn gt PARameter OFFSet lt num gt lt float gt o o o 107 8 2 6 10 CALibrate lt chn gt PARameter SCALe lt num gt o 07 8 2 6 11 CALibrate lt chn gt PARameter SCALe lt num gt lt fl0at gt o o oo 08 8 2 7 System Commands z c ica a ed dia a a Ae e 108 SATI FDN es racial ais ca er a 08 AS A be es anes a he oe aioe aban GE bs lca saul 08 E RS A E 08 8274 SYSTEM BEEP se aee der a e ea do A ah dol 09 82 75 SYSTemiBOOT VERSION n ea cenana A ara RR a aa 09 82 0 SYSTem ERROF s s oo 204 e e a kes ace wae ee ganas gists 109 827 7 SYSTem CODE VERSION ss iss eee Dn ee Ge Gob aoe EES 09 32780 YS Tem VERSION op aod ike e ae as a ay SR Poe Soe S 109 8 2 79 UNIT TEMPerature css ss ta Cs ORR Re Ra ko eR ee A 109 3 2 7 10 UNIT TEMPerature Umit y esse rr Bok Ra a ae ow ea pe dad aig 110 8 2 8 Communication Interface Commands
28. Introduction Fluke s Hart Scientific Division s 1620A is a low cost high accuracy digital thermo hygrometer Its unique combination of features makes it suitable for a wide variety of applications from laboratory to industrial ambient measure ment Features of the thermo hygrometer include e Two channels measure ambient temperature to 0 125 C and RH to 1 5 e Two sensor capability second sensor optional each measuring tempera ture and relative humidity each is detachable cable extendable and inter changeable with self contained calibration each may be assigned a unique 16 character identification e Display resolution is user selectable up to 0 001 C and 0 01 RH e On board memory holds up to 400 000 time date stamped readings e Serial RS 232 interface for reading measurements and access to settings e Ethernet LAN interface provides TCP IP communicatins and embedded HTML web page for reading measurements over a network e Optional wireless RF 802 15 4 ZigBee for remote operation e Visual and audio alarms for various alarm or fault conditions alarm out put port e May be wall mounted or set on a bench top e Detachable sensors contain their own calibration data for easy recalibrations e Optional software logs in real time or shows graphical statistical data e Password protection of settings e Large LCD displays temperature and humidity data graphically numeri cally and statistically 16 pre defined user c
29. Returns the state of the lower temperature alarm enable for the specified channel Example ALAR TEMP1 LOW ENAB Response 0 The TEMPerature suffix lt chn gt specifies the channel 1 or 2 A value of 1 is returned if the lower temperature alarm is enabled A value of 0 is returned if the lower temperature alarm is disabled ALARm TEMPurature lt chn gt LOWer ENABle lt bool gt Sets the state of the lower temperature alarm enable for the specified channel Example ALAR TEMP1 LOW ENAB 1 The TEMPerature suffix lt chn gt specifies the channel 1 or 2 The lt bool gt pa rameter turns the lower temperature alarm on 1 or ON or off 0 or OFF This command may be password protected see Section 8 2 10 Password Commands 87 1620A DewK Thermo hygrometer User s Guide 8 2 1 39 ALARm TEMPurature lt chn gt LOWer LIMit MINIMAXIDEF Returns the lower temperature alarm limit for the specified channel in degrees Cork Example ALAR TEMP1 LOW LIM Response 18 00 The TEMPerature suffix lt chn gt specifies the channel 1 or 2 The value re turned is always in the current temperature units C or F Specifying the MIN MAX or DEF parameter returns the minimum maximum or default value respectively 8 2 1 40 ALARm TEMPurature lt chn gt LOWer LIMit lt float gt MINIMAXIDEF Sets the lower temperature alarm limit for the specified channel in degrees C or F Example ALAR TEMP1 LOW LIM 20 00 The TEMPerature su
30. The average standard deviation minimum maximum spread number maximum rate and alarm are displayed for the channel and measurement type 23 82 C o mm EH 08 55 58 09 04 03 o arse ae TA O rs is Feces A a AA A A A A A A A Figure 30 Stats View The Y buttons are used to change the setting parameters Press the Enter button to save the new setting Press the Exit button to cancel any changes and exit to the menu 7 Menu Functions Data Menu 7 3 2 3 Stats Print The STATS PRINT function allows daily statistics to be printed over the serial port 24 09 ir ne 26 6 Figure 31 Stats Print Press the Enter button to save the new setting Press the Exit button to cancel any changes and exit to the menu 7 3 2 4 Stats Reset The STATS RESET function resets current statistics Statistics will then be based on measurements made from this time forward After pressing the Enter button a WARNING message will appear requesting a confirmation of the op 49 1620A DewK Thermo hygrometer User s Guide eration If the Enter button is pressed the stats are reset If the Exit button is pressed the operation is canceled Figure 33 Stats Reset 7 3 2 5 Stats Clear The STATS CLEAR function clears all daily statistics stored in memory After pressing the Enter button a WARNING message will appear requesting a con firmation of the operation If the Enter button is pressed
31. The port has two LED indicators The 15 1620A DewK Thermo hygrometer User s Guide 5 5 bottom LED indicates link state off for no connection amber for 10 Mbps and green for 100 Mbps The top LED indicates link activity off for no activity amber for half duplex and green for full duplex Alarm Port The alarm port allows external alarm indicators to be connected to the instrument and activated when an alarm event occurs see Section 7 4 1 The port outputs OV when inactive and 12V DC up to 20 mA when active The jack accepts a 2 5 mm two conductor subminature plug Switchcraft 850 The sleeve of the plug is ground and the tip is positive DC Power Socket The DC plug from the AC adapter plugs into the 12V DC power socket to power the instrument The jack accepts a 5 5 mm miniature power plug Switchcraft 8760 The outer conductor is ground and the inner conductor is positive The instrument may draw up to 0 5A Back Panel The back panel contains the stand power switch battery compartment and product information including serial number Stand The stand can be used to prop up the thermo hygrometer on a flat surface Battery Compartment The battery compartment holds a 9V alkaline battery used as a backup power source to maintain continuous measurement during a power outage see Section 6 2 Battery Power Switch The power switch turns the power on and off to the thermo hy grometer including power
32. This command may be password protected see Section 8 2 10 Password Commands 8 2 2 13 FETCh lt chn gt 94 Returns a comma delimited list of the most recent measurements for the speci fied channel or for both channels Example 1 FETC 1 Response 25 576 29 30 or Response 1 1 25 629 C 29 32 2003 9 16 11 2 38 Example 2 FETC Response 25 582 29 32 26 341 37 96 or Response 1 1 25 629 C 29 29 2 0 C 0 2003 9 16 11 1 42 The lt chn gt parameter is optional and specifies the channel 1 or 2 If the lt chn gt parameter is omitted the most recent measurements on both channels are returned If a channel is disabled or no sensor is connected the measure ment values returned for that channel are 0 This command does not affect the measurement action 8 Digital Communications Interface Commands 8 2 2 14 8 2 2 15 8 2 2 16 If the extended format setting is OFF see Section 8 2 2 15 FOR Mat TDST STAT the measurement values are returned in a comma delimited format as follows lt Ch1Temp gt lt Ch1 Humid gt lt Ch2Temp gt lt Ch2Humid gt The temperature values are always in the current temperature units The humid ity values are always in RH If the extended format setting is ON the measurements are returned in a comma delimited format as follows lt MeasStatus gt lt ChX gt lt ChXTemp gt lt TempUnits gt lt ChXHumid gt lt ChY gt lt ChYTemp gt lt TempUnits gt lt ChY
33. a warm high humidity environment to a colder temperature This can be avoided by first moving the sensor into low humidity air at the same temperature for about 30 minutes before it is placed at the lower temperature If condensation does occur the sensor should recover once it dries out This may take several hours 23 7 Menu Functions 7 Menu Functions TEMPERATURE RELATIVE HUMIDITY 23670 39 94 i JOH 1 TIME DATE 08 43 05 09 04 03 j A Figure 5 Main Display Selecting the Enter Menu button from the front panel accesses the main menu of the thermo hygrometer The main menu consists of the submenus CHAN NEL DISPLAY DATA ALARM and SYSTEM Most of the menu options may be password protected to prevent them from being changed see Section 7 5 4 PASSWORD E 23 66 C a sane item EH o DISPLAY ENTER 39 9 jones item DATA EXIT 08 44 09 ii sais 03 04 03 SYSTEM Figure 6 Main Menu 25 1620A DewK Thermo hygrometer User s Guide 7 1 7 1 1 26 Each submenu has its own set of functions The Enter Menu button is used to select and execute menu choices The A V buttons are used to scroll through the functions The Exit button is used to return from a function to the previous menu The Exit button may be pressed and held to quickly return to the main screen Channel Menu The CHANNEL menu provides functions for selecting the channel setting the sensor identification setting
34. ae ere a 49 7 3 2 4 Stats Resets cis gw a A A es Scere ea OS 49 7325 Stats Cleats in asta dt ek wach wale ee E A ea RO ee Gees amp 50 Alm Menit a 3 ce 38 de A het a he oh a Ge aes 51 7 4 1 INEA 51 7 4 2 Sensor Alarm yaa a REGO a a i 52 7 4 3 System Alais e as amp o e A We dl amp GO BONO amp SD 53 TAA Alarm VieW o 2 a ea rs eb ee ay ST ken eg G 54 System Menu o es a hea Sees Be eee a 55 7 5 1 Systemi Setting 2 00 ia as a E a 56 132 Date Time o cinco A da ae S 37 7 5 3 Comm Seti ia a ada ds ee ee ali 59 Pad Small ua ais it o o a a Gag da de don dr ea 60 75 32 RF optional iii a a re a BUS Re ee 62 E MGA Nee ca od ct Scie te he Serene tek Ae tt Hah He Mi Re Wee Ph de Gey i eae Sy Ses See 63 7 5 4 PASS WOE ii a a a 65 7 5 5 NA AAA wee BGA Oy of 4 we a oak 67 8 Digital Communications Interface 69 8 1 8 2 OVERVIEW so hh lw e ISS Bo RG a Poa dl ew ts 109 8 1 1 Serial RS 2 o e Oa a Va dws ka Shad beaded diene da chad amp 69 8 1 2 RF Wireless optional soos 3 54 3 etereo rrenen t ES OHSS 70 8 1 3 LAN 6 e amp amp ek amp Sy A sas A ee EE OS 70 8 1 4 Command Syntax iy s a hes coe a Oe ep wow Ne Bhd ae h 70 Commands 71 8 2 1 Alarm Comma ds ss e ao eek a na a BR a OEN 80 S20 ALARm BAT ery lis aus ee e ain Sa tes EE E cee eA Ed ia 80 82 1 2 ALARm BATTery ENABIE a 5 arar e do es Ee BS we 80 8 2 1 3 ALARm BATTery ENABle lt bool gt gt oss aos nneur tateek ee 80 82 14 ALARMB
35. automatic daylight saving adjustment setting Example SYST TIME DAYL Response 1 A value of 0 is returned if the daylight saving adjustment is disabled A value of 1 is returned if the daylight saving adjustment is set to North America N AMER A value of 2 is returned if the daylight saving adjustment is set to Eu rope EUROPE Specifying the MIN MAX or DEF parameter returns the minimum maximum or default value respectively SYSTem TIME DAYLight lt num gt MINIMAXIDEF Sets the automatic daylight saving adjustment setting Example SYST TIME DAYL 1 The lt num gt parameter sets the automatic daylight saving adjustment setting to off 0 North America 1 or Europe 2 This command may be password protected see Section 8 2 10 Password Commands SYSTem TIME FORMat MINIMAXIDEF Returns the time format used for the display Example SYST TIME FORM Response 1 A value of 0 is returned if the time format is set to 12 hour A value of 1 is re turned if the time format is set to 24 hour Specifying the MIN MAX or DEF parameter returns the minimum maximum or default value respectively SYSTem TIME FORMat lt num gt IMINIMAXIDEF Sets the time format Example SYST TIME FORM 0 The lt num gt parameter can be 0 12 HR or 24 HR Specifying the MIN MAX or DEF parameter sets the time format to the minimum maximum or default value respectively This command may be password protected see Sec tion 8 2 10 Passw
36. ba AR ake D 115 8 2291 SYSTEM DATE 2 6 6 2 es wots ha Ge Rw we Gee ey oe A eae Sys 15 8 2 9 2 SYSTem DATE lt year gt lt month gt lt day gt 2 0 2 ee ee 15 8 2 9 3 SYSTem DATE FORMat MINIMAXIDEF 005 15 8 2 9 4 SYSTem DATE FORMat lt num gt IMINIMAXIDEF 0004 15 8 2 9 5 SYSTem DECimal FORMat MINIMAXIDEF 04 16 8 2 9 6 SYSTem DECimal FORMat lt num gt IMINIMAXIDEF 2 16 SLIT SYSTEM RME 0 o ade won Sok Ge eed ede alee atk dota tam 116 8 2 9 8 SYSTem TIME lt hour gt lt minute gt lt second gt o ooo oo 16 8 2 9 9 SYSTem TIME DAYLight MINIMAXIDEF o 17 8 2 9 10 SYSTem TIME DAYLight lt num gt IMINIMAXIDEF o o o o o o o 17 8 2 9 11 SYSTem TIME FORMat MINIMAXIDEF o o 17 8 2 9 12 SYSTem TIME FORMat lt num gt IMINIMAXIDEF oo oo o 17 8 2 10 Password Commands saoi a ici io Gee ioe SOE He es Se 117 8 2 10 1 SYSTem PASSword ALARm 2 0 00 0 ee ee 118 8 2 10 2 SYSTem PASSword ALARm lt bool gt o o o oo 118 8 2 10 3 SYSTem PASSword CDISable 5 6 ois eee ees sees we a Be ee S 118 8 2 10 4 SYSTem PASSword CENable lt pass gt s oo ies ect ic iaia oo oo o 118 8 2 10 5 SYSTem PASSword CENable STATe o o ooo 118 8 2 10 6 SYSTem PASSword COMM o 119 8 2 10 7 SYSTem PASSword COMM lt SbO00l gt o o o 119 8 2 10 8 SYSTem PASSword NEW lt pass gt IDEF
37. begin sending recorded data uning text format See Section 7 3 1 3 Data Print b The thermo hygrometer should immediately begin sending the data If no readings have been stored the thermo hygrometer will not respond to these commands 4 If the terminal program was set to capture the incoming data to a file wait until no more data is being received then stop capturing CE Comments EMC Directive Hart Scientific s equipment has been tested to meet the European Electromag netic Compatibility Directive EMC Directive 89 336 EEC The Declaration of Conformity for your instrument lists the specific standards to which the unit was tested The instrument was designed specifically as a test and measuring device Compliance to the EMC directive is through IEC 61326 1 Electrical equipment for measurement control and laboratory use EMC requirements 1998 As noted in the IEC 61326 1 the instrument can have varying configurations The instrument was tested in a typical configuration with shielded grounded probe and RS 232 cables Emissions may in non typical applications exceed the levels required by the standard It is not practical to test all configurations as the manufacturer has no control over the probes the user may connect to the instrument Immunity Testing The instrument was tested to the requirements for industrial locations This allows the instrument to be used in all types of locations from the labora tory
38. day s statistics DAILY STATS can be set up to automatically store the running statistics on any hour of the day and automatically reset the statistics on any hour Measurement statistics are kept as measurements are made The current statistics can be displayed in any STATS type zone see Sec tions 7 2 2 and 7 2 3 The statistics can also be stored automatically at the end of the day and reset automatically at the beginning of the next day The DAILY STATS menu options are STATS SETTING STATS VIEW STATS PRINT STATS RESET and STATS CLEAR The DAILY STATS can be password protected see Section 7 5 4 Password 23 81 tee i tem RH o 4TER 40 9 lan i item E Ss E 5 Qu min At bai pre Y im EAS EXIT 08 55 06 fete 09 04 03 E alada Ae ORS Fon es A Figure 28 Daily Stats The A F buttons are used to select the menu option The lt gt buttons are used to change the setting parameters Press the Enter button to save the new setting Press the Exit button to cancel any changes and exit to the menu 7 Menu Functions Data Menu 7 3 2 1 Stats Setting The STATS SETTING function sets the daily statistics recording options The AUT REC enables ON or disables OFF automatic recording of the statistics The REC TIM may be set from 00 00 to 23 00 The REC TIM function sets the hour just prior to which the statistics are automatically recorded when AUT REC is ON If REC TIM is 00 00
39. from the battery Before disconnecting the AC adapter from the instrument switch the power off to prevent draining the backup battery 5 Parts and Controls Quick Buttons 5 6 5 7 Serial Label The serial label shows the instrument model and serial number Contains FCC I0 OUR XBEE The enchased device complies with Part 15 of the FOC Rules Operation 16204 PR 009 Figure 4 Back Panel RF option shown Quick Buttons When the main screen is displayed the buttons have the following functions Enter Menu This button is used to display the menu options Exit This button is used to display the alarm window With the alarm window displayed the Exit button can be used to return to the main screen while pre serving the alarm events or the Enter button can be used to clear the alarm events and return to the main screen 4 These buttons are used to move among enabled display layouts AV These buttons are used to adjust the display contrast A for darker and for lighter Configurations e Model 1620A H includes a 1620A H Thermo Hygrometer readout a high accuracy sensor Model 2626 H a thermo hygrometer readout wall mount bracket power supply Model 2361 and an RS 232 cable e Model 1620A S includes a 1620A S Thermo Hygrometer readout a stan dard accuracy sensor Model 2626 S a thermo hygrometer readout wall mount bracket power supply Model 2361 and an RS 232 cable 17 1620A DewK Th
40. if an upper temperature alarm event has occurred on the specified channel A value of 0 is returned if an upper temperature alarm event has not occurred on the specified channel 8 2 1 50 ALARm TEMPurature lt chn gt UPPer ENABle Returns the state of the upper temperature alarm enable for the specified channel Example ALAR TEMP1 UPP ENAB Response 0 The TEMPerature suffix lt chn gt specifies the channel 1 or 2 A value of 1 is returned if the upper temperature alarm is enabled A value of 0 is returned if the upper temperature alarm is disabled 8 2 1 51 ALARm TEMPurature lt chn gt UPPer ENABle lt bool gt 90 Sets the state of the upper temperature alarm enable for the specified channel Example ALAR TEMP1 UPP ENAB 1 8 Digital Communications Interface Commands 8 2 1 52 8 2 1 53 8 2 1 54 8 2 1 55 The TEMPerature suffix lt chn gt specifies the channel 1 or 2 The lt bool gt pa rameter turns the upper temperature alarm on 1 or ON or off 0 or OFF This command may be password protected see Section 8 2 10 Password Commands ALARm TEMPurature lt chn gt UPPer LIMit MINIMAXIDEF Returns the upper temperature alarm limit for the specified channel in degrees Cork Example ALAR TEMP1 UPP LIM Response 28 00 The TEMPerature suffix lt chn gt specifies the channel 1 or 2 The value re turned is always in the current temperature units C or F Specifying the MIN MAX or DEF parameter
41. is encountered the data is plotted as if it all occurred at the instant of the time change Then when the hour s data has passed plotting resumes normally and the data is plotted to the right of the time shift Note that in any case data is recorded to memory as would be expected with a one hour time gap or a repeated hour when a daylight saving time shift occurs The effects of the automatic daylight saving time shifts should cause minimal inconvenience as they occur early Sunday morning To prevent confusion and time ambiguity problems avoid running environment sensitive operations dur ing the daylight saving time shift Also consider temporarily suspending data recording for days on which daylight saving time shifts occur But if you do this be sure to resume data recording when you need it The AY buttons are used to select the menu parameter The lt d gt buttons are used to change the parameters Press the Enter button to save the new setting Press the Exit button to cancel any changes and exit to the menu Comm Setting The COMM SETTING function is used to setup the communication parameters for the communication ports This may be password protected with the COMM password parameter see Section 7 5 4 Password Communication ports are 59 1620A DewK Thermo hygrometer User s Guide 60 7 5 3 1 used for communicating with a computer printer or other equipment The Thermo Hygrometer includes a serial RS 232 po
42. is important and settings need not be changed COMMAND should be OFF PAGE when ON allows the instrument to serve an HTML web page In appli cations where extra security is important PAGE can be set to OFF disabling the HTML server When the parameter window is exited there might be a delay of several sec onds as the LAN port device is updated with the new settings The instrument does not implement dynamic DNS hostname registration When PAGE is enabled the instrument serves a simple HTML web page that displays basic product information allows readings to be observed and pro vides a terminal screen where commands can be entered The web page of the 1620A can be accessed with an internet browser using the instrument s IP ad dress see ADDRESS above for the URL e g http 192 168 1 1 The main page shows product information including the model and serial num bers of the instrument and its sensors and the ID name and calibration dates of the sensors If a sensor s ALERT option is enabled it also shows its calibra tion expiration date The READINGS button on the main page links to the Readings page which shows current temperature and relative humidity readings and alarm indica tions The Update button refreshes the screen with new readings The TERMINAL button links to the Terminal page which allows any of the communication commands see Section 8 to be entered and responses dis played This page requires entering the i
43. lt month gt lt day gt lt hour gt lt minute gt lt sec ond gt lt year gt lt month gt lt day gt lt hour gt lt min ute gt lt second gt DATa RECord READ lt num gt Returns a group of data Section 8 2 3 24 DATa RECord TIMe Returns the data recording timer Section 8 2 3 25 DATa RECord TIMe lt num gt MINIMAXIDEF Sets the data recording timer Section 8 2 3 26 FETCh lt chn gt Returns the temperature and humidity measurements for the specified channel Section 8 2 2 13 FORMat TDSTamp STAT Returns the state of the date time stamp for FETCh MEASure or READ command Section 8 2 2 14 FORMat TDSTamp STAT lt bool gt Enables or disables the date time stamp for FETCh MEASure or READ command Section 8 2 2 15 INITiate no action Section 8 2 4 1 75 1620A DewK Thermo hygrometer User s Guide Alphabetical List Commands continued Command Description Refer To INITiate CONTinous Returns the continuous state always 1 Section 8 2 4 2 MEASure lt chn gt Returns the temperature and humidity measurements for the specified channel Section 8 2 2 16 READ lt chn gt Returns the temperature and humidity measurements for the specified channel Section 8 2 2 17 ROUTe CLOSe lt chn gt Returns the state of the specified channel Section 8 2 5 1
44. menu see Section 7 5 1 System Setting Recording Measurements The thermo hygrometer will automatically record measurements on enabled channels at the set period Recording is enabled using the RECORD SETTING function in the DATA RECORD sub menu in the DATA menu see Section 7 3 1 1 Record Setting The record period is also set with this function Sensors The standard accuracy sensor and high accuracy sensor are used to measure temperature and relative humidity The sensors attach to the thermo hygrometer by plugging into the top or side panel of the instrument 21 1620A DewK Thermo hygrometer User s Guide 22 6 12 1 The sensor contains a memory device that stores information about the sensor and automatically transfers this data to the thermo hygrometer when the sensor 1s attached This ensures that the settings used to measure and calculate temper ature and humidity always match the sensor being used Caution Sensors are fragile devices that can be easily damaged by me chanical shock overheating and exposure to fluids or dust Damage may not be visibly apparent but nevertheless can cause drift instability and loss of accuracy Observe the following precautions e DO NOT allow sensors to be dropped struck or stressed e DO NOT overheat sensors beyond their recommended temperature range e DO NOT expose sensors to harmful vapors fumes dust or condensation e DO NOT allow sensors to come into direct con
45. on backup power The 1620A will continue to collect data on backup power for approxi mately 16 hours When AC power is restored the display will come back on and show a message stating the AC power was interrupted See Section 6 2 Battery Q Can I swap out sensors in the field A Yes The sensor s calibration information is stored in the sensor itself When you change out the sensor this information is automatically downloaded to the 1620 There is no need to reprogram probe coefficients into the 1620 See 6 12 Sensors Q How many readings can the 1620A store in onboard memory A The 1620A can store 400 000 date amp time stamped data points Q What happens when memory is full A The oldest block of data is discarded to allow the most recent measurements to be recorded See Section 7 3 1 Data Record Q How do I tell how much memory has been used A The memory usage expressed as a percent filled is found in the DATA menu under DATA RECORD and DATA STORAGE See Section 7 3 1 Data Record Q How dol get data from the 1620 11 Troubleshooting Frequently Asked Questions A The 1620A allows you to download data using an RS 232 LAN or RF optional communications Q Can I change the data stored in memory A No Data stored in memory cannot be changed It can be downloaded but the original data file cannot be changed Memory can be cleared of all readings Q Does the 1620A utilize password protection A Yes R
46. orient or relocate the receiving antenna increase the separation between the equipment and receiver connect equipment and receiver to outlets on different circuits or consult the dealer or an experienced radio television technician for help 143 1620A DewK Thermo hygrometer User s Guide 144 11 3 3 2 11 3 3 3 11 4 A WARNING To satisfy FCC RF exposure requirements for mobile trans mitting devices a separation distance of 20 cm or more should be main tained between the antenna of this device and persons during device operation To ensure compliance operations at closer than this distance is not recommended The antenna used for this transmitter must not be co located in conjunction with any other antenna or transmitter Canada The transceiver used in the 1620A Thermo Hygrometer has been certified for use in Canada IC certification number IC 4214A XBEE Europe The transceiver used in the 1620A Thermo Hygrometer conforms to European Union EMC Directive 89 336 EEC ETSI EN 301 489 1 and EN 301 489 17 and R amp TTE Directive 1999 5 EC ETSI EN300 328 Frequently Asked Questions Q Can the 1620A operate on battery power A No The 1620A requires AC power to be fully functional However it does utilize a 9V backup battery that runs the data collection in the event of a power outage When AC power is interrupted the display will go blank and an audible alarm will sound to alert you that the 1620A is running
47. parameter is used to turn the sensor fault alarm ON or OFF The A F buttons are used to select the menu option The lt P buttons are used to change the parameter setting Press the Enter button to save the new setting Press the Exit button to cancel any changes and exit to the menu System Alarm The SYSTEM ALARM function allows the battery or power alarms to be en abled For enabled system alarm events to be indicated an indicator must be enabled with ALARM SETTING as described above 53 1620A DewK Thermo hygrometer User s Guide 54 7 4 4 When the BATTERY alarm is turned ON an alarm occurs when the battery charge is low When the POWER alarm is ON an alarm occurs when power is disconnected drops out or is switched off The beep indicator if also enabled will sound ev ery 20 seconds when the instrument is operating from internal battery power until external power is restored or the battery is drained Figure 37 System Alarm The AY buttons are used to select the menu option The buttons are used to change the parameter setting Press the Enter button to save the new setting Press the Exit button to cancel any changes and exit to the menu Alarm View The ALARM VIEW function displays the alarm event window which can also be accessed from the main screen by pressing the Exit button If alarm events have occurred the word ALARM flashes at the top of the display and details about each alarm even
48. settings NOTE Keep your password in a secure location If an incorrect password is entered the message WRONG PASSWORD is dis played and access to the password protected parameters is denied Press the ENTER button to reenter the password If a correct password is entered the password protected parameters PASS SENSOR RECORD STATS ALARM TIME and COMM are displayed The PASS parameter allows the user to change the password and consists of a four digit number The SENSOR parameter allows the user to turn the password protection for sensor and channel settings ON or OFF The RECORD parameter allows the user to turn the password protection for data recording settings ON or OFF The STATS parameter allows the user to turn the password protection of statis tics and daily stats settings ON or OFF The ALARM parameter allows the user to turn the password protection of alarm settings ON or OFF The TIME parameter allows the user to turn the password protection of time and date settings ON or OFF 66 7 Menu Functions System Menu 7 5 5 The COMM parameter allows the user to turn the password protection of the communications settings ON or OFF Press the 4P buttons to highlight the digit to change Use the A F buttons to scroll through the numbers 0 9 Press the Enter button to save the new setting Press the Exit button to cancel any changes and to move to the next parameter or exit to the menu Note Keep your passw
49. status enable Section 8 2 11 15 STATus MEASure ENABle lt num gt IMINIMAXIDEF Sets the measurement status enable Section 8 2 11 16 STATus OPERation Returns and clears the operation status event Section 8 2 11 17 STATus OPERation CONDition Returns the operation status condition Section 8 2 11 18 STATus OPERation ENABle Returns the operation status enable Section 8 2 11 19 STATus OPERation ENABle lt num gt MINIMAXIDEF Sets the operation status enable Section 8 2 11 20 STATus QUEStion Returns and clears the questionable status event Section 8 2 11 21 STATus QUEStion CONDition Returns the questionable status condition Section 8 2 11 22 STATus QUEStion ENABle Returns the questionable status enable Section 8 2 11 23 STATus QUEStion ENABle lt num gt IMINIMAXIDEF Set the questionable status enable Section 8 2 11 24 SYSTem BEEP Produces a short beep from the speaker Section 8 2 7 4 SYSTem BOOT VERSion Returns the boot ROM version Section 8 2 7 5 SYSTem COMM RADio CHANnel Returns the RF transceiver channel number Section 8 2 8 1 SYSTem COMM RADio CHANnel lt num gt Sets the RF transceiver channel number Section 8 2 8 2 SYSTem COMM RADio ENABle Returns the RF transceiver enable state Section 8 2 8 3 SYSTem COMM RADio ENABle lt bool gt Sets the RF transceiver enable state Section 8 2 8 4 SYSTem COMM RADio INSTrument Returns the RF transceiver instrument address Section 8 2 8 5 SYSTem COMM RADio INSTrument lt num gt Sets the RF transceiver instrum
50. the sensor lock and setting the sensor calibration The functions that appear in the CHANNEL menu are CHANNEL SETTING SENSOR ID SENSOR LOCK and SENSOR CAL m Mc CGE es Ue pit TUN hu r 23 67 C iz item EH gt ENTER 1 40 3 do Pasi ih hi Ax Io a m ot A Lo cm item EXIT return to menu un m Oz 08 45 12 03 04 03 ni t z Pie ore mera lea ae Figure 7 Channel Menu Tein m E L TE A vak Ting aar id C Channel Setting The CHANNEL SETTING function allows you to turn the channels on or off set the measurement period turn averaging on or off and set the time over which the rate of change is calculated for measurements These settings may be password protected to prevent them from being changed see Section 7 5 4 PASSWORD The channels are turned on or off by selecting the channel and then the ON or OFF setting using the p buttons MEA PER measurement period is the time interval at which the measurements are updated on the display You may select between 1 2 5 10 15 and 30 sec onds 1 2 5 10 15 20 and 30 minutes or 1 hour for the measurement period AVERAGE may be turned to ON or OFF When average is on the temperature 7 Menu Functions Channel Menu and humidity values displayed are averaged over the measurement period When average is off the displayed values are instantaneous measurements RATE T rate time determines the time interval over which
51. the stats are cleared If the Exit button is pressed the operation is cancled Figure 32 Stats Clear 50 7 Menu Functions Alarm Menu 7 4 7 4 1 Alarm Menu The ALARM menu allows alarm event and indicator settings to be set and al lows viewing of alarm events The functions that appear in this menu are ALARM SETTING SENSOR ALARM SYSTEM ALARM and ALARM VIEW Alarm settings may be password protected see Section 7 5 4 Password To enable alarms first enable alarm indicators with ALARM SETTING as de scribed below Then enable specific alarm events with SENSOR ALARM for sensor or measurement related conditions or SYSTEM ALARM for system power conditions P2162 Cte x item RH o 291 le item EXIT 22 03 19 ts henu 03 04 2003 Figure 34 Alarm oO AR TE rel ak ll The A F buttons are used to select the menu option The lt 4 gt buttons are used to change the parameter setting Press the Enter button to save the new setting Press the Exit button to cancel any changes made and exit to the menu Alarm Setting The ALARM SETTING function is used to enable visual audible and external alarm indicators The parameters are BEEP DISPLAY and PORT When the BEEP setting is ON the thermo hygrometer emits an audible beep to indicate an alarm event For the power alarm it is four short beeps every 20 sec onds For the battery alarm it is three short beeps every minute For the sensor d
52. time will occur twice in one day Another effect is with viewing data on a graph in real time Data is plotted on the graph sequentially as measurements are made and the graph is scrolled uni formly No adjustment is made to the real time graph when the time changes However when a graph is redrawn using recorded data as a result of changing the display layout or cycling the power in preparation to resume real time plot ting the thermo hygrometer attempts to accurately plot measurement points at the appropriate time locations Thus a one hour spring daylight saving time shift will appear as a one hour gap in the data on the graph When a jump back wards is found in the recorded data such as occurs during the fall daylight sav ing time shift the thermo hygrometer makes no attempt to plot the data prior to the time shift there will appear to be missing data on the left side of the graph Graphs drawn using the DATA VIEW function behave similarly when time dis continuities occur in recorded data A one hour jump forward in time causes a one hour gap in the data on the graph However a one hour jump backwards in time produces a graph that also includes the data prior to the time shift The re peated hour of data is also plotted but is compressed into one time point the time just prior to the time shift In other words the data prior to the time shift is plotted first Then when data for the first hour after the one hour shift back wards
53. to the user e Caution identifies conditions and actions that may damage the instru ment being used 1 2 1 A Warnings To avoid personal injury follow these guidelines DO NOT use this unit in environments other than those listed in the User s Guide Follow all safety guidelines listed in the User s Guide Calibration equipment should only be used by trained personnel The AC adapter can present safety concerns if misused or damaged To avoid the risk of electric shock or fire do not use the AC adapter outdoors or in a dusty dirty or wet environment If the cord case or plug of the adapter is damaged in any way discontinue its use immediately and have it replaced Never disassemble the AC adapter Use only the AC adapter provided with the instrument or equivalent adapter recommended by the manufac turer of this instrument The AC adapter has circuits with high voltage inside that could present danger of electrical shock or fire if exposed If the AC adapter is damaged in any way or becomes hot discontinue its use immediately disconnect it from any AC supply and have it replaced Do not attempt to open repair or continue using a damaged or defective AC adapter 1 Before You Start Authorized Service Centers 1 2 2 1 3 The instrument battery can present danger if not handled properly To avoid the risk of exposure to dangerous substances or explosion immedi ately remove the battery and discontinue use if i
54. to the factory floor Criterion B was used for Radiated RF IEC 61000 4 3 and Conducted RF IEC 61000 4 6 Therefore the operation of the instrument may be affected by excessive electromagnetic interference and the instrument may not perform within the normal specification limits in such an environment Criterion C was used for Electrostatic Discharge ESD IEC 61000 4 2 and Electric Fast Transit EFT Burst IEC 61000 4 4 If the instrument is subjected to EFT conditions at 2kV the instrument may re quire the user to cycle the power to return to normal operation 11 Troubleshooting CE Comments 11 3 1 2 11 3 2 11 3 3 11 3 3 1 Emission Testing The instrument fulfills the limit requirements for Class A equipment but does not fulfill the limit requirements for Class B equipment The instrument was not designed to be used in domestic establishments Low Voltage Directive Safety In order to comply with the European Low Voltage Directive 73 23 EEC Hart Scientific equipment has been designed to meet the IEC 1010 1 EN 61010 1 and the IEC 1010 2 010 EN 61010 2 010 standards RF Certification The 1620A Thermo Hygrometer may contain a radio transceiver as an option that can be used for wireless communications The transceiver operates in the 2 4 GHz frequency band with a maximum transmitting power of 1 mW The transceiver generates and radiates RF signals only when the RF device is en abled and is requested to trans
55. 2 1 11 8 2 1 12 8 2 1 13 8 2 1 14 8 2 1 15 8 2 1 16 ALARm PORT Returns the alarm port state Example ALAR PORT ENAB Response 0 A value of 1 is returned if the alarm port is active 12V O otherwise OV ALARm PORT lt bool gt Sets the alarm port state Example ALAR PORT ENAB 1 The lt bool gt parameter activates 1 or ON or deactivates 0 or OFF the alarm port overriding the state determined by alarms This command may be pass word protected see Section 8 2 10 Password Commands ALARm PORT ENABle Returns the alarm port enable setting Example ALAR PORT ENAB Response 0 A value of 1 is returned if the alarm port is enabled A value of 0 is returned if the alarm port is disabled ALARm PORT ENABle lt bool gt Sets the alarm port enable setting Example ALAR PORT ENAB 1 The lt bool gt parameter turns the alarm port enable on 1 or ON or off 0 or OFF This command may be password protected see Section 8 2 10 Pass word Commands ALARm POWer Indicates whether a power loss alarm event has occurred Example ALAR POW Response 0 A value of 1 is returned if a power loss alarm event has occurred A value of 0 is returned if a power loss alarm event has not occurred ALARm POWer ENABle Returns the state of the power loss alarm enable Example ALAR POW ENAB 8 Digital Communications Interface Commands 8 2 1 17 8 2 1 18 8 2 1 19 8 2 1 20 8 2 1 21 Response 0
56. 2 38 Example 2 MEAS Response 25 582 29 32 26 341 37 96 or Response 1 1 25 629 C 29 29 2 0 C 0 2003 9 16 11 1 42 This command is equivalent to the FETC command READ lt chn gt Returns a comma delimited list of the most recent measurements for the speci fied channel or for both channels Example 1 READ 1 Response 25 576 29 30 or Response 1 1 25 629 C 29 32 2003 9 16 11 2 38 Example 2 READ Response 25 582 29 32 26 341 37 96 or Response 1 1 25 629 C 29 29 2 0 C 0 2003 9 16 11 1 42 This command is equivalent to the FETC command Data Commands The data commands are used to access daily statistics or recorded measurements DATa DSTatistics ENABle Returns the state of the daily statistics recording enable Example DAT DST ENAB Response 0 A value of 1 is returned if the daily statistics recording is enabled A value of 0 is returned if the daily statistics recording is disabled DATa DSTatistics ENABle lt bool gt Sets the state of the daily statistics recording 8 Digital Communications Interface Commands 8 2 3 3 8 2 3 4 8 2 3 5 8 2 3 6 8 2 3 7 Example DAT DST ENAB 1 The lt bool gt parameter turns the daily statistics recording on 1 or ON or off 0 or OFF This command may be password protected see Section 8 2 10 Pass word Commands DATa DSTatistics HOUR MINIMAXIDEF Returns the daily statistics recording time Example DAT DST HOUR Respo
57. 7 5 4 Password The temperature and humidity from each channel can be recorded and the recording period is selectable To record the temperature on sensor channel 1 set REC 1 T to ON To record the humidity on sensor channel 1 set REC 1 H to ON To record the temperature on sensor channel 2 set REC 2 T to ON To record the humidity on sensor channel 2 set REC 2 H to ON The REC PER recording period is set by selecting 1 2 5 10 15 or 30 sec onds 1 2 5 10 20 or 30 minutes or 1 hour for the REC PER Note It is recommended that REC PER be set to 5 minutes or more oth erwise the memory may fill up quickly and redrawing graphs may be slow Also note that graphs can only be redrawn if the measurement for the channel is being recorded as the graph data is obtained from recorded data The recording period affects the observable time resolution of graphs 7 Menu Functions Data Menu Caution When the memory has been filled the oldest block of data will be discarded to allow new data to be recorded Measurement storage capacity can range between 28 hours and 2 years depend ing on the record period and enabled channels Refer to Table 3 Approximate Data Storage Capacity Table 3 Approximate Data Storage Capacity Record period Storage 1 channel Storage 2 channels 1 second 56 hours 28 hours 10 seconds 20 days 10 days 1 minute 18 weeks 9 weeks 5 minutes 20 months 10 months 10 minutes 24
58. 8 2 2 1 8 Digital Communications Interface Commands 8 2 2 6 8 2 2 7 8 2 2 8 8 2 2 9 8 2 2 10 CALCulate lt chn gt PARameter lt num gt AVERage lt type gt DATA Returns the specified statistical calculation for the specified channel This is the same as the CALCulate chn PARameter lt num gt AVERage lt type gt command see 8 2 2 4 CALCulate lt chn gt PARameter lt num gt AVERage lt type gt TYPE Returns the name of the specified statistical type for the specified channel Example CALC1 PAR1 AVER4 TYPE Response T MAX The CALCulate suffix lt chn gt specifies the channel 1 or 2 The PARamenter suffix lt num gt specifies temperature 1 or relative humidity 2 The AVER age suffix lt type gt specifies the statistic average 1 standard deviation 2 minimum 3 maximum 4 spread 5 maximum rate 7 or alarm count 8 Temperature values are in the current temperature unit C of F CALCulate lt chn gt PARameter lt num gt RATE Returns the rate calculation for the specified channel in degrees C or F per hour for temperature or per hour for relative humidity Example CALC1 PAR1 RATE Response 0 74 The CALCulate suffix lt chn gt specifies the channel 1 or 2 The PARameter suffix lt num gt specifies temperature 1 or relative humidity 2 CALCulate lt chn gt PARameter lt num gt RATE TIME MINIMAXIDEF Returns the rate time span in seconds Example CA
59. 8 2 2 9 ter lt num gt RATE TIME CALCulate lt chn gt PARameter lt num gt RATE TIME lt num gt IMINIMAXIDEF Sets the rate time span Section 8 2 2 10 CALCulate lt chn gt PARameter lt num gt RESolution 74 Returns the display resolution Section 8 2 2 11 8 Digital Communications Interface Commands Alphabetical List Commands continued Command Description Refer To CALCulate lt chn gt PARameter lt num gt RESolution lt num gt IMINIMAXIDEF Sets the display resolution Section 8 2 2 12 DATa DSTat ENABle Returns the state of the daily stats recording enable Section 8 2 3 1 DATa DSTat ENABle lt bool gt Enables or disables the daily stats recording enable Section 8 2 3 2 DATa DSTat HOUR Returns the daily stats recording time Section 8 2 3 3 DATa DSTat HOUR lt num gt IMINIMAXIDEF Sets the daily stats recording time Section 8 2 3 4 DATa DSTat RENable Returns the state of the statistics reset enable Section 8 2 3 5 DATa DSTat RENable lt bool gt Enables or disables the statistics reset Section 8 2 3 6 DATa DSTat RHO ur Returns the statistics reset time Section 8 2 3 7 DATa DSTat RHOur lt num gt IMINIMAXIDEF Sets the statistics reset time Section 8 2 3 8 DATa DSTat RECord BTIMe lt num gt Returns the daily stats record begin time Section 8 2 3 9 DATa DSTat RECord CLEar Clears all daily stats records Section 8 2 3 10 DATa DSTat RECord COU
60. AHSL Calculate the slope adjusted humidity errors RHn 45 RHerror RHny RHerror RHn AHSL x 7 O Calculate the median slope adjusted humidity error the adjustment AHOS to the humidity offset parameter HOS and the new humidity off set parameter _ RHerror RH3Y RHerror RH2Y 2 RHmedian AHOS RHmedian HOS HOS AHOS Enter the new values for TOS TOS TSL TSL HOS HOS and HSL HSL into the thermo hygrometer Also set the DATE to the cur rent date and set the DUE date for the next calibration If a power on warning message is desired when the DUE date expires set ALERT to ON Do not change the serial number Press ENTER when prompted to write the new values to the sensor 10 Maintenance 10 Maintenance e The calibration instrument has been designed ease of operation and sim plicity of maintenance as the central theme in the product development Therefore with proper care the instrument should require very little main tenance Avoid operating the instrument in oily wet dirty or dusty envi ronments e If the outside of the instrument becomes soiled it may be wiped clean with a damp cloth and mild detergent Do not use harsh chemicals on the surface which may damage the LCD or the plastic front panel e Ifa hazardous material is spilt on or inside the equipment the user is re sponsible for taking the appropriate decontamination steps as outlined by the national safety
61. AXIDEF Sets the decimal format used for the display Example SYST DEC FORM 0 The lt num gt parameter can be 0 or 1 If a value other than one listed here is used the instrument automatically selects the nearest acceptable value that is less than the value entered Specifying the MIN MAX or DEF parame ter sets the decimal format to the minimum maximum or default value respectively SYSTem TIME Returns the clock time Example SYST TIME Response 11 43 23 The response is returned in the format lt hour gt lt minute gt lt second gt Note The system time is always returned using 24 hour format regardless of the clock time format setting SYSTem TIME lt hour gt lt minute gt lt second gt Sets the clock time to the specified hour minute and second Example SYST TIME 11 43 28 The lt hour gt lt minute gt and lt second gt parameters must all be specified The lt hour gt parameter is a one or two digit number 0 to 23 The lt minute gt param eter is a one or two digit number 0 to 59 The lt second gt parameter is a one or two digit number 0 to 59 This command may be password protected see Section 8 2 10 Password Commands Note The system time is always set using 24 hour format regardless of the clock time setting 8 Digital Communications Interface Commands 8 2 9 9 8 2 9 10 8 2 9 11 8 2 9 12 8 2 10 SYSTem TIME DAYLight MINIMAXIDEF Returns the
62. Bit 7 Not used Example STAT ALAR Response 32 STATus ALARm CONDition This command reads the Alarm Status Condition Register Reading this register does not affect it The value returned indicates the condition of each of the eight bits of the register by adding the binary weighted values of each bit The meaning of each bit when set 1 is as follows where 0 is the least significant and 7 is the most significant 125 1620A DewK Thermo hygrometer User s Guide 126 8 2 11 11 8 2 11 12 8 2 11 13 0 no alarm Bit 0 Channel 1 temperature alarm bit Bit 1 Channel 1 humidity alarm bit Bit 2 Channel 2 temperature alarm bit Bit 3 Channel 2 humidity alarm bit Bit 4 Low battery alarm bit Bit 5 Power failure alarm bit Bit 6 Not used Bit 7 Not used Example STAT ALAR Response 32 STATus ALARm ENABle This command returns the Alarm Status Enable Register see STA Tus ALARm ENABle lt num gt command below Example STAT ALAR ENAB Response 32 STATus ALARm ENABle lt num gt IMINIMAXIDEF This command sets the Alarm Status Enable Register This register determines which event bits of the Alarm Status Event Register affect the Alarm Status Bit of the Status Byte Register If any bit in the Alarm Status Event Register is set 1 while its corresponding mask bit in the Alarm Status Enable Register is set the Alarm Status Bit in the Status Byte Register will be set The value of the lt num
63. DIRECT INCIDENTAL OR CONSE QUENTIAL DAMAGES OR LOSSES INCLUDING LOSS OF DATA WHETHER ARISING FROM BREACH OF WARRANTY OR BASED ON CONTRACT TORT RELIANCE OR ANY OTHER THEORY Since some countries or states do not allow limitation of the term of an implied warranty or exclusion or limitation of incidental or consequential damages the limitations and exclusions of this warranty may not apply to every buyer If any provision of this Warranty is held invalid or unenforceable by a court of com petent jurisdiction such holding will not affect the validity or enforceability of any other provision Fluke Corporation Hart Scientific Division 799 E Utah Valley Drive e American Fork UT 84003 9775 USA Phone 1 801 763 1600 Telefax 1 801 763 1010 E mail support hartscientific com www hartscientific com Subject to change without notice Copyright 2006 Printed in USA Table of Contents 1 Before You Start l 1 1 Symbols Used mis eee bni undid wee eS 1 1 2 Safety Information o e se go a ale aS oe e ee ee ee 2 1 2 1 IWAL She ar ae RS gs A aa aa EEan ade a Ge ee 2 1 22 CAUTIONS dia sek ee 2a dad cba a sd rts ch a ai a tty Sie dis the ead ee en 3 1 3 Authorized Service Centers 02 00000 3 2 Introduction 7 3 Specifications and Environmental Conditions 9 3 1 Speciwications 42 5 ska ae a a eed ee eS 9 3 2 Environmental Conditions
64. E function allows viewing the status of the data memory The FILLED parameter shows the percentage of storage space used The BYTES parameter shows the number of bytes stored The CAP parameter shows storage capacity in bytes The INDEX parameter shows percentage of 44 7 Menu Functions Data Menu space used in the record block index The BEGIN parameter is the date of the earliest data The END parameter is the date of the latest data 2381 FILLE 0 34 en BIE ad Al C Y THDEs i aiy a GEGTH ng 29 03 Ss END 45 03 08 54 37 09 04 03 Prezz ENTER e acl Sa SO A Figure 27 Data Storage Press the Enter or Exit button to exit 7 3 1 5 Data Clear The DATA CLEAR function clears the data collected This function may be password protected see Section 7 5 4 Password T 2381 a me 409 ITLL PTR 08 54 49 03 0 4 03 Press ENTER A A SG Figure 26 Data Clear 45 1620A DewK Thermo hygrometer User s Guide 7 3 2 46 A Press the Enter button to clear the data Press the Exit button to cancel any changes and exit to the menu Caution Using this function will erase all recorded data and make it irre trievable Daily Stats The DAILY STATS menu can be used to record measurement statistics such as average maximum minimum maximum rate etc for each day Up to 60 days of statistics are stored Earliest statistics are erased automatically if needed to store another
65. EBP ENABIE ooo ecg uaa a a ee Gk a e Po Le wl 80 8 2 1 5 ALARm BEEP ENABle lt bool gt 2 2 2 2 em eee 80 S26 ALARm CEBA eea det ade tbe thee dk Bete Sede Gods a Bre ae RA 81 8 24 7 ALARMDATEFIRS is ea ace a a aoe a ae we ds OO a Aw A 81 82138 ALARm DATESLAST ooh fie aa Ge ake Gow we Poe A eek a 81 S219 ALARm DISPlay ENABI e coo coma goss aoa dra gee cand o oa ee aba ea 81 8 2 1 10 ALARm DISPlay ENABle lt bool gt oac oaa a ee 81 821 11 ALARMPORDT aia av aus Aa ROE Ga ae A aoe Ane ata 82 8 2112 AWARm PORT lt b60L gt 0 aoe fa ead sonte Bek Sik aay Eei Hoes ee aol da wh 82 8 21 13 ALARm PORT ENABIO iaa be ack aa aE a BR EE 82 8 2 1 14 ALARm PORT ENABle lt bool gt s eee aa e ee 82 8 21 15 ALARM POW cala oie a A i a Ae des aoe MA 82 8 2 1 16 ALARm PQWet ENABIe cop oir doe a BEE ag ae Bw we 82 8 2 1 17 ALARm POWer ENABle lt bool gt o o e ee 83 8 2 1 18 ALARm RHUMidity lt chn gt LOWer o o o e E 83 8 2 1 19 ALARm RHUMidity lt chn gt LOWer ENABle o o oooo o ooo 83 8 2 1 20 ALARm RHUMidity lt chn gt LOWer ENABle lt bo0l gt o 83 8 2 1 21 ALARm RHUMidity lt chn gt LOWer LIMit MINIMAXIDEF 83 8 2 1 22 ALARm RHUMidity lt chn gt LOWer LIMit lt float gt IMINIMAXIDEF 84 8 2 1 23 ALARm RHUMidity lt chn gt RATE oes s caca ooo 84 8 2 1 24 ALARm RHUMidity lt chn gt RATE ENABle o o o o o
66. HUM1 SENS ENAB 1 The RHUMidity suffix lt chn gt specifies the channel 1 or 2 The lt bool gt pa rameter turns the humidity sensor alarm on 1 or ON or off 0 or OFF This command may be password protected see Section 8 2 10 Password Commands ALARm RHUMidity lt chn gt UPPer Indicates whether an upper humidity alarm event has occurred for the specified channel Example ALAR RHUM1 UPP Response 0 The RHUMidity suffix lt chn gt specifies the channel 1 or 2 A value of 1 is returned if an upper humidity alarm event has occurred on the specified chan nel A value of 0 is returned if an upper humidity alarm event has not occurred on the specified channel ALARm RHUMidity lt chn gt UPPer ENABle Returns the state of the upper humidity alarm enable for the specified channel Example ALAR RHUM1 UPP ENAB Response 0 The RHUMidity suffix lt chn gt specifies the channel 1 or 2 A value of 1 is returned if the upper humidity alarm is enabled A value of 0 is returned if the upper humidity alarm is disabled ALARm RHUMidity lt chn gt UPPer ENABle lt bool gt Sets the state of the upper humidity alarm enable for the specified channel Example ALAR RHUM1 UPP ENAB 1 The RHUMidity suffix lt chn gt specifies the channel 1 or 2 The lt bool gt pa rameter turns the upper humidity alarm on 1 or ON or off 0 or OFF This command may be password protected see Section 8 2 10 Password Commands ALARm RHUMi
67. Humid gt lt year gt lt month gt lt day gt lt hour gt lt minute gt lt second gt The measure status lt MeasStatus gt is O if these measurement values have been read previously or 1 if these are new measurement values If no channel num ber was specified the measurements on both channels are returned X 1 Y 2 Otherwise only the measurements on the specified channel are returned If only new readings are desired the FORM TDST STAT command can be used to enable the extended format option and any readings in which the value of the first field is O can be ignored FORMat TDST STATe Returns the time and date stamp enable for the FETC MEAS and READ commands Example FORM TDST STAT Response 0 A value of 1 is returned if the time and date stamp is enabled A value of 0 is returned if the time and date stamp is disabled FORMat TDST STATe lt bool gt Sets the time and date stamp enable for the FETC MEAS and READ commands Example FORM TDST STAT 1 The lt bool gt parameter turns the time and date stamp enable on 1 or ON or off 0 or OFF MEASure lt chn gt Returns a comma delimited list of the most recent measurements for the speci fied channel or for both channels Example MEAS 1 Example 1 MEAS 1 95 1620A DewK Thermo hygrometer User s Guide 96 8 2 2 17 8 2 3 8 2 3 1 8 2 3 2 Response 25 576 29 30 or Response 1 1 25 629 C 29 32 2003 9 16 11
68. LC PAR RATE TIME Response 300 Specifying the MIN MAX or DEF parameter returns the minimum maxi mum or default value respectively CALCulate lt chn gt PARameter lt num gt RATE TIME lt num gt MINIMAXIDEF Sets the rate time span for the specified channel in seconds Example CALC PAR RATE TIME 600 Specifying MIN MAX or DEF parameter sets the rate time span to the mini mum maximum or default value respectively This command may be pass word protected see Section 8 2 10 Password Commands 93 1620A DewK Thermo hygrometer User s Guide 8 2 2 11 CALCulate lt chn gt PARameter lt num gt RESolution MINIMAXIDEF Returns the display resolution Example CALC PAR1 RES Response 3 The PARameter suffix lt num gt specifies either temperature resoution 1 or relative humidity resolution 2 The value returned indicates the number of decimal places Specifying the MIN MAX or DEF parameter returns the mini mum maximum or default value respectively 8 2 2 12 CALCulate lt chn gt PARameter lt num gt RESolution lt num gt MINIMAXIDEF Sets the display resolution Example CALC PAR2 RES 2 The PARameter suffix lt num gt specifies either temperature resolution 1 or relative humidity resolution 2 The lt num gt parameter specifies the number of decimal places to use Specifying the MIN MAX or DEF parameter sets the display resolution to the minimum maximum or default value respectively
69. Librate suffix lt chn gt specifies the channel 1 or 2 The response is re turned in the format lt year gt lt month gt lt day gt 8 Digital Communications Interface Commands 8 2 6 6 8 2 6 7 8 2 6 8 8 2 6 9 8 2 6 10 CALibrate lt chn gt DATE DUE lt year gt lt month gt lt day gt Sets the sensor calibration due date for the specified channel Example CAL1 DATE DUE 2004 9 17 The CALibrate suffix lt chn gt specifies the channel 1 or 2 The lt year gt lt month gt and lt day gt parameters must all be specified The lt year gt parameter is a four digit number The lt month gt parameter is a one or two digit number 1 to 12 The lt day gt parameter is a one or two digit number 1 to 31 This com mand is password protected see Section 8 2 10 Password Commands CALibrate lt chn gt EXPired Returns the sensor calibration expiration state for the specified channel Example CAL1 EXP Response 0 The CALibrate suffix lt chn gt specifies the channel 1 or 2 A value of 1 is re turned if the sensor calibration has expired A value of 0 is returned if the sen sor calibration has not expired CALibrate lt chn gt PARameter OFFSet lt num gt Returns the sensor calibration offset parameter for the specified channel Example CAL1 PAR OFFS2 Response 0 210 The CALibrate suffix lt chn gt specifies the channel 1 or 2 The OFFSet suf fix lt num gt specifies either temperatu
70. Mit lt num gt IMINIMAXIDEF Sets the high temperture alarm limit for the specified channel Section 8 2 1 53 ALARm TIME FIRSt Returns the time of first alarm event Section 8 2 1 54 ALARm TIME LAST Returns the time of latest alarm event Section 8 2 1 55 CALibrate lt chn gt ALERt Returns the state of the calibration alert enable for the specified channel Section 8 2 6 1 CALibrate lt chn gt ALERt lt bool gt Enables or disables the sensor alert enable for the specified Section 8 2 6 2 channel CALibrate lt chn gt DATe CALibrate Returns the sensor calibration date for the specified channel Section 8 2 6 3 CALibrate lt chn gt DATe CALibrate Sets the sensor calibration date for the specified channel Section 8 2 6 4 lt year gt lt month gt lt day gt CALibrate lt chn gt DATe DUE Returns the sensor calibration due date for the specified channel Section 8 2 6 5 CALibrate lt chn gt DATe DUE Sets the sensor calibration due date for the specified channel Section 8 2 6 6 lt year gt lt month gt lt day gt CALibrate lt chn gt EXPiration Returns the sensor calibration expiration for the specified Section 8 2 6 7 channel CALibrate lt chn gt PARameter OFFSet lt num gt Returns the sensor calibration offsets for the specified channel Section 8 2 6 8 temperature or humidity CALibrate lt chn gt PARameter OFFSet lt num gt lt float gt Sets the sensor calibration off
71. Nt MAX Returns the daily stats record count Section8 2 3 11 DATa DSTat RECord DATE lt num gt Returns the daily stats record date Section 8 2 3 12 DATa DSTat RECord ETIMe lt num gt Returns the daily stats record end time Section 8 2 3 13 DATa DSTat RECord FIND lt year gt lt month gt lt day gt Returns the daily stats record number for the given date Section 8 2 3 14 DATa DSTat RECord VALue lt num gt lt chn gt lt type gt Returns the daily stats statistical calculation Section 8 2 3 15 DATa RECord CLEar Clears all recorded data Section 8 2 3 16 DATa RECord FEED RHUMidity lt chn gt Returns the state of the humidity recording for the specified channel Section 8 2 3 17 DATa RECord FEED RHUMidity lt chn gt lt bool gt Enables or disables the humidity recording for the specified channel Section 8 2 3 18 DATa RECord FEED TEMPerature lt chn gt Returns the state of the temperature recording for the specified channel Section 8 2 3 19 DATa RECord FEED TEMPerature lt chn gt lt bool gt Enables or disables the temperature recording for the specified Section 8 2 3 20 channel DATa RECord FREE Returns the recording memory usage Section 8 2 3 21 DATa RECord OPEN Returns the number of bytes in the open data set Section 8 2 3 22 DATa RECord OPEN Opens the range of data for reading Section 8 2 3 23 lt year gt
72. OMM Returns the state of the communication settings password protection Section 8 2 10 6 SYSTem PASSword COMM lt bool gt Enables or disables the communication settings password protection Section 8 2 10 7 SYSTem PASSword NEW lt num gt IDEF Sets the new password Section 8 2 10 8 SYSTem PASSword RECord Returns the state of the data recording password protection Section 8 2 10 9 SYSTem PASSword RECord lt bool gt Enables or disables the data recording password protection Section 8 2 10 10 SYSTem PASSword SENSor Returns the state of the sensor settings password protection Section 8 2 10 11 SYSTem PASSword SENSor lt bool gt Enables or disables the sensor settings password protection Section 8 2 10 12 SYSTem PASSword STATistics Returns the state of the statistics settings password protection Section 8 2 10 13 SYSTem PASSword STATistics lt bool gt Enables or disables the state of the statistics settings password protection Section 8 2 10 14 SYSTem PASSword TIME Returns the state of the date time password protection Section 8 2 10 15 SYSTem PASSword TIME lt bool gt Enables or disables the date time password protection Section 8 2 10 16 SYSTem POWer BATTery Returns the battery level percent Section 8 2 8 39 SYSTem TIME Returns the clock time Section 8 2 9 7 SYSTem TIME lt hour gt lt minute gt lt second gt Sets the clock tim
73. Our MINIMAXIDEF o o o 97 8 2 3 8 DATa DSTatistics RHOur lt num gt IMINIMAXIDEF o o o o o o o o 98 8 2 3 9 DATa DSTatistics RECord BTIMe lt num gt o ooo o 98 8 2 3 10 DATa DSTatistics RECord CLE AT o lt 98 8 2 3 11 DATa DSTatistics RECord COUNt lt MAX gt 0 ooo e 98 8 2 3 12 DATa DSTatistics RECord DATE lt num gt o 98 8 2 3 13 DATa DSTatistics RECord ETIMe lt num gt o o o o ooo o 99 8 2 3 14 DATa DSTatistics RECord FIND lt year gt lt month gt lt day gt o o o 99 8 2 3 15 DATa DSTatistics RECord VALue lt num gt lt chn gt lt type gt o o o o o ooo 99 8 2 3 16 DATa RECord CLEAE 3s soe ia E Se ere we WR ass 99 8 2 3 17 DATa RECord FEED RHUMidity lt chn gt oooooo ooo ooo 99 8 2 3 18 DATa RECord FEED RHUMidity lt chn gt lt bool gt 0 0 0 oo o 100 8 2 3 19 DATa RECord FEED TEMPerature lt chn gt o o oe 100 8 2 3 20 DATa RECord FEED TEMPerature lt num gt lt bo0l gt 0 o o o o o 100 82321 DATa RECord FREE ica a a ada ae St hc ci 100 8 2 3 22 DAT RECO OPEN 5 jase nane Sooke ok octet eae GE Ye Ae Al latas deg 101 8 2 3 23 DATa RECord OPEN lt year gt lt month gt lt day gt lt hour gt lt minute gt lt sec ond gt lt year gt lt month gt lt day gt lt hour gt lt minute gt lt second gt o o oo 101 8 2 3
74. Register and Measurement status Register ESE Returns the Event Status Enable Register See ESE lt num gt command below Example ESE Response 189 ESE lt num gt IMINIMAXIDEF This command sets the Event Status Enable Register This register determines which event bits of the Event Status Register affect the ESB Event Sum mary Message Bit of the Status Byte Register If any event bit of the Event Sta tus Register is set 1 while its corresponding mask bit of the Event Status Enable Register is set the ESB Event Summary Message Bit of the Status Byte Register will be set The value of the lt numeric_value gt parameter is a number from 0 to 255 that is the sum of the binary weighted values of each mask bit The Event Status Register is described in Section below The following exam ple causes the ESB bit in the Status Byte Register to be set whenever a com mand error or execution error occurs Example ESE 32 ESR This query command returns the Event Status Register It also clears the Event Status Register and the ESB bit of the Status Byte Register The value returned indicates the condition of each of the eight bits of the register by adding the bi nary weighted values of each bit The meaning of each bit when set 1 is as follows where 0 is the least significant and 7 is the most significant 0 Operation complete OPC Execution of the last command is completed 1 Request control RQC No function for t
75. Setting the adjust ment number more negative lightens the screen and setting it more positive 31 1620A DewK Thermo hygrometer User s Guide darkens the screen The contrast may also be adjusted from the main screen by using the amp buttons see Section 5 1 Front Panel s 273 73 C DISPLAY SETTIHMG i ESE E RH O Y MA 1 4 4 Ti 08 48 37 e ES DL ci rs EA A ARAN Figure 14 Display Setting The lt gt buttons are used to select the parameter setting The AW buttons are used to scroll between each parameter Press the Enter button to change and save the new settings Press the Exit button to cancel any changes and exit to the menu 7 2 2 Display Layout 32 The DISPLAY LAYOUT function allows you configure any of the 16 different display layouts These settings may be password protected see Section 7 5 4 Password A display layout can be enabled or disabled by choosing ON or OFF ON allows the display to be selected from the main screen using the lt gt buttons The number of zones is selectable from to 4 Each zone can display one of the following zone types blank screen time stats temperature and hu midity numerically or temperature and humidity graphically Once the number of zones is selected you can select what is to be displayed in each zone The lt d p gt buttons are used to select the parameter setting The AV buttons are used to move between each parameter Press the Enter button to change and
76. TATus QUEStionable CONDition This command reads the Questionable Status Condition Register Reading this register does not affect it The value returned indicates the condition of each of the eight bits of the register by adding the binary weighted values of each bit The meaning of each bit when set 1 is as follows where 0 is the least signifi cant and 7 is the most significant no problem ito Not used it Not used it2 Not used it3 Not used it4 Measurement invalid bit ito Not used it6 Not used it7 Not used WU v v v V yuyu Q Example STAT QUES COND Response 16 STATus QUEStionable ENABIe This command returns the Questionable Status Enable Register see STA Tus QUEStionable ENABle lt num gt command below Example STAT QUES ENAB Response 16 STATus QUEStionable ENABle lt num gt IMINIMAXIDEF This command sets the Questionable Status Enable Register This register de termines which event bits of the Questionable Status Event Register affect the Questionable Status Bit of the Status Byte Register If any bit in the Question able Status Event Register is set 1 while its corresponding mask bit in the 8 Digital Communications Interface Commands 8 2 12 Questionable Status Enable Register is set the Questionable Status Bit in the Status Byte Register will be set The value of the lt num gt parameter is a number from 0 to 15 that is the sum of the binary weighted values of each mask bit The Que
77. The SENSor suffix lt chn gt specifies the channel 1 or 2 The response to this command is enclosed in double quotes and indicates the current ID string for the sensor on the specified channel SENSor lt chn gt IDENtification lt str gt Sets the sensor identification for the specified channel Example SENS1 IDEN CHAMBER3 The SENSor suffix lt chn gt specifies the channel 1 or 2 The sensor identifi cation field is set to the value indicated by lt str gt The sensor identification can be up to 16 characters in length and consist of any combination of numbers let ters underscores and spaces This command may be password protected see Section 8 2 10 Password Commands 103 1620A DewK Thermo hygrometer User s Guide 104 8 2 4 9 8 2 4 10 8 2 4 11 SENSor lt chn gt STATe Returns the sensor status for the specified channel Example SENS1 STAT Response 0 The SENSor suffix lt chn gt specifies the channel 1 or 2 The response to this command is a number that indicates the state of the sensor on the specified channel A value of 0 indicates a sensor is connected and reading properly The table below details all other possible values Note that the response may indi cate more than one of the following conditions Bit Value Definition 1 Sensor not attached 2 Sensor read error 4 Sensor checksum error 8 Sensor calibration parameter error Sensor calibration date error 32 Invalid
78. a aks AS Slat 49 Stats Cleans sce bea a Boe a we eee Re ae Oe 50 Stats RES cing ee hk a Aer ee ee a a eee ee ee Me Se ed 50 RR a he ey 51 Alarm Seung 050 cou odie Seale te a 52 Sensor Alarm 6 2 4068 bed eee ab eb bw bo a bes 53 System Alarm e 265 deh AA 54 Alarm View 2 ee a 55 System Ment es a deie ee Gebbde ated ee heeds 56 System Setting sae oa PPS se Ede Sa eee PRE eee Se 57 Figure 41 Figure 42 Figure 43 Figure 44 Figure 45 Figure 46 Figure 47 Figure 48 Date Time s sme paai ra EA A 58 Comm Setunge sn so el Gk Rh eh a oe OE we OE Eai e 60 SEAL e426 e he Sed tbe Geos 61 RE Setimgs ct a a be See ee Swe Ge be ees 62 Lan Settings ac p ee eee RR A pe Se Ge eb a he S8 64 PASS WO iio noe aG EL ee a eS S 66 System Ino a eas Vee oh Seed Giese a 67 Serial Cable Wiring 2 2 ee ee ee 69 Tables Table 1 Table 2 Table 3 Table 4 Table 4 Table 4 Table 4 Table 4 Table 4 Table 4 International Electrical Symbols o oo 1 Statistics Zone Field Types e ve adneu o oo 34 Approximate Data Storage Capacity o oo 41 Alphabetical List Commands o a 72 Alphabetical List Commands continued 73 Alphabetical List Commands continued 74 Alphabetical List Commands continued 75 Alphabetical List Commands continued 76 Alphabetical List Commands continued 77 Alphabetical List
79. abled DATa RECord FEED TEMPerature lt num gt lt bool gt Sets the state of the temperature recording enable for the specified channel Example DAT REC FEED TEMP1 0 The TEMPerature suffix lt chn gt specifies the channel 1 or 2 The lt bool gt pa rameter turns temperature recording for the specified channel on 1 or ON or off 0 or OFF This command may be password protected see Section 8 2 10 Password Commands DATa RECord FREE Returns the recording memory usage Example DAT REC FREE Response 3282 449070 The response indicates the number of bytes remaining and the number of bytes used separated by a comma 8 Digital Communications Interface Commands 8 2 3 22 8 2 3 23 8 2 3 24 DATa RECord OPEN Returns the number of bytes of memory in the open set of data Example DAT REC OPEN Response 1203 This command must be preceeded by the DATa REC OPEN command see Section 8 2 3 23 which is used to open a set of data using a date time range The response to this command indicates the number of unread bytes in the date time range specified by the last DATa RECord OPEN command If the re sponse is 0 there are no readings stored in memory over the specified date time range Use the DATa RECord READ command to read the data from memory DATa RECord OPEN lt year gt lt month gt lt day gt lt hour gt lt min ute gt lt second gt lt year gt lt month gt lt day gt lt hour gt lt minute gt
80. ag netic interference the serial cable should be shielded with low resistance between the connector and the shield The serial period baud rate linefeed and echo duplex are programmable Re fer to Section 7 5 3 Comm Setting for instructions on setting these parameters 69 1620A DewK Thermo hygrometer User s Guide 70 8 1 2 RF Wireless optional The RF wireless interface allows the instrument to receive and respond to com mands from a remote computer through a radio frequency wireless link The computer must be attached to an RS 232 or USB RF modem See Section 5 8 Accessories for more information These accessories can be purchased sepa rately In the case of a USB RF modem USB driver software supplied with the modem maps the wireless link to a virtual COM port on the computer Proper communication between the instrument and a computer s RF modem requires that both be set with matched settings as explained in Section 7 5 3 2 The RF interface uses the 802 15 4 standard which is the basis for the ZigBee It operates in the license free 2 4 GHz frequency band with a very low trans mission power of 1 mW Typical unobstructed range is 100 ft 30 m The range might be reduced if RF reflecting walls obstructions or interfering elec tronic equipment are nearby Some channel numbers might work over farther ranges than others LAN The LAN interface allows the instrument to receive and respond to commands
81. annels Example CALC1 AVER CLE This command may be password protected see Section 8 2 10 Password Commands CALCulate lt chn gt DEWPoint Returns the dewpoint measurement on the specified channel in degrees C or F Example CALC1 DEWP Response 3 5 The CALCulate suffix lt chn gt specifies the channel 1 or 2 The value re turned is always in the current temperature units C or F CALCulate lt chn gt HINDex Returns the heat index calculation for the specified channel in degrees C or F Example CALC1 HIND Response 28 4 The CALCulate suffix lt chn gt specifies the channel 1 or 2 The value re turned is always in the current temperature units C or F CALCulate lt chn gt PARameter lt num gt AVERage lt type gt Returns the specified statistical calculation for the specified channel Example CALC1 PAR1 AVER4 Response 25 186 The CALCulate suffix lt chn gt specifies the channel 1 or 2 The PARamenter suffix lt num gt specifies temperature 1 or relative humidity 2 The AVER age suffix lt type gt specifies the statistic average 1 standard deviation 2 minimum 3 maximum 4 spread 5 maximum rate 7 or alarm count 8 Temperature values are in the current temperature unit C of E CALCulate lt chn gt PARameter lt num gt AVERage lt type gt CLEar Resets all of the running statistics for both channels This is the same as the CALCulate AVERage CLEar command see Section
82. ary Status message bit of the Status Byte Register If any event bit of the Status Byte Register is set 1 while its corresponding mask bit of the Service Request Enable Register is set the MSS Master Summary Status message bit of the Status Byte Register will be set and a service request generated The value of the lt numeric_value gt parameter is a number from 0 to 255 that is the sum of the binary weighted values of each mask bit The Status Byte Register is de scribed in section 8 2 11 7 below The following example causes the MSS bit in the Status Byte Register to be set and a service request to be generated when ever the ESB bit of the Status Byte Register is set Example command SRE 32 STB This query command returns the Status Byte Register Reading this register does not affect it or the output queue The value returned indicates the condi 8 Digital Communications Interface Commands 8 2 11 8 tion of each of the eight bits of the register by adding the binary weighted val ues of each bit The meaning of each bit when set 1 is as follows where 0 is the least significant and 7 is the most significant Bit 0 Measurement Status Bit Indicates that a bit in the Measurement Status Event Register is set and its corresponding mask bit in the Measurement Status Enable Register is set It is cleared when the Measurement Status Event Register is read Bit 1 Alarm Status Bit Indicates that a bit in the Alarm Status Event Re
83. assword pro tected otherwise a value of 0 is returned SYSTem PASSword RECord lt bool gt Sets the state of data recording settings password protection Example SYST PASS REC 1 The lt bool gt parameter turns the data recording password protecton on 1 or ON or off 0 or OFF This command is password protected Commands pro tected with this setting are DATA REC CLE DATA REC FEED RHUM DATA REC FEED TEMP and DATA REC TIM SYSTem PASSword SENSor Returns the state of the sensor settings password protection Example SYST PASS SENS Response 0 119 1620A DewK Thermo hygrometer User s Guide 120 8 2 10 12 8 2 10 13 8 2 10 14 8 2 10 15 8 2 10 16 A value of 1 is returned if the sensor settings password protection is enabled Otherwise a value of 0 is returned SYSTem PASSword SENSor lt bool gt Sets the state of the sensor settings password protection Example SYST PASS SENS 1 The lt bool gt parameter turns the sensor settings password protection on 1 or ON or off 0 or OFF This command is password protected Commands pro tected with this setting are CALC PAR DATE TIME CALC PAR RES ROUT CLOS ROUT OPEN SENS AVER SENS IDEN SENS LOCK and TRIG TIME SYSTem PASSword STATistics Returns the state of the statistics settings password protection Example SYST PASS STAT Response 0 A value of 1 is returned if the statistics settings password protection is enabled otherwise a value o
84. atistics are reset automatically after power up when the STATS RESET function is used see Section 7 3 2 4 or when the time reaches the RESTIM hour and AUT RES is enabled for the DAILY STATS see Section 7 3 2 Daily Stats Table 2 Statistics Zone Field Types Field Type Description Blank blank field DATE current date TIME current time ID sensor identification SERN sensor serial number TEMP most recent temperature measurement T RATE temperature rate of change T AVE temperature statistical mean T STD temperature standard deviation T MIN minimum temperature T MAX maximum temperature T SPR temperature spread maximum minus minimum T N number of temperature statistical samples T RMAX maximum temperature rate of change T ALAR temperature alarm count 7 Menu Functions Display Menu Field Type Description TDELT temperature delta difference from the other channel RHUM most recent relative humidity measurement H RATE humidity rate of change H AVE relative humidity statistical mean H STD relative humidity standard deviation H MIN minimum relative humidity H MAX maximum relative humidity H SPR relative humidity spread maximum minus minimum H N number of humidity statistical samples H RMAX maximum relative humidity rate of change H ALAR relative humidity alarm count H DELT relative h
85. bles the serial port auto printing Section 8 2 8 19 SYSTem COMMunica SERial LINefeed Returns the state of the serial port linefeed Section 8 2 8 20 SYSTem COMMunica SERial LINefeed lt bool gt Enables or disables the serial port linefeed Section 8 2 8 21 SYSTem COMMunica SERial TIMe Returns the serial port auto printing timer Section 8 2 8 22 SYSTem COMMunica SERial TIMe Sets the serial port auto printing timer Section 8 2 8 23 lt num gt MINIMAXIDEF SYSTem COMM SOCKet ADDRess Returns the LAN port IP address Section 8 2 8 24 SYSTem COMM SOCKet ADDRess lt addr gt Sets the LAN port IP address Section 8 2 8 25 SYSTem COMMunicate SOCKet COMMand Returns the status of the settings commands Section 8 2 8 26 SYSTem COMM SOCKet DHCP Returns the LAN port DHCP setting Section 8 2 8 27 SYSTem COMM SOCKet DHCP lt bool gt Sets the LAN port DHCP setting Section 8 2 8 28 SYSTem COMM SOCKet ENABle Returns the LAN port enable state Section 8 2 8 29 SYSTem COMM SOCKet ENABle lt bool gt Sets the LAN port enable state Section 8 2 8 30 SYSTem COMM SOCKet GATeway Returns the LAN port IP gateway address Section 8 2 8 31 SYSTem COMM SOCKet GATeway lt addr gt Sets the LAN port IP gateway address Section 8 2 8 32 SYSTem COMM SOCKet HTML Returns the HTML web page status Section 8 2 8 33 SYSTem COMM SOCKet MAC Returns the LAN port hardware MAC address Section 8 2 8 34 SYSTem COMM SOCKet MASK Returns the LAN port subnet mask Section 8 2 8 35 SYSTem COMM SOCKet MASK
86. command sets the Operation Status Enable Register This register deter mines which event bits of the Operation Status Event Register affect the Opera tion Status Bit of the Status Byte Register If any bit in the Operation Status Event Register is set 1 while its corresponding mask bit in the Operation Sta tus Enable Register is set the Operation Status Bit in the Status Byte Register will be set The value of the lt num gt parameter is a number from 0 to 15 that is the sum of the binary weighted values of each mask bit The Operation Status Event Register is described in Section 8 4 11 13 STATus OPERation The fol lowing example causes the Operation Status Bit in the Status Byte Register to be set when measurements on both channels have been completed Example STAT OPER ENAB 16 Response 16 STATus QUEStionable This command reads and clears the Questionable Status Event Register The value returned indicates the condition of each of the eight bits of the register by adding the binary weighted values of each bit The meaning of each bit when set 1 is as follows where 0 is the least significant and 7 is the most significant 0 no problem Bit 0 Not used Bit 1 Not used Bit 2 Not used 129 1620A DewK Thermo hygrometer User s Guide 130 8 2 11 22 8 2 11 23 8 2 11 24 Bit 3 Not used Bit 4 Measurement Invalid bit Bit 5 Not used Bit 6 Not used Bit 7 Not used Example STAT QUES Response 16 S
87. council with respect to the material e Before using any cleaning or decontamination method except those rec ommended by Hart users should check with an Authorized Hart Scien tific Service Center to be sure that the proposed method will not damage the equipment e Ifthe AC adapter becomes damaged have it replaced immediately Never disassemble the AC adapter or attempt to repair it e Ifthe instrument is used in a manner not in accordance with the equip ment design the operation of the thermo hygrometer may be impaired or safety hazards may arise e Periodic calibration of the sensors at regular intervals is required to ensure that it continues to measure with proper accuracy Calibration should only be performed by qualified authorized personnel 137 11 Troubleshooting Troubleshooting 11 11 1 11 1 1 11 1 2 11 1 3 11 1 4 Troubleshooting In case you run into difficulty while operating the thermo hygrometer this sec tion provides some suggestions that may help you solve the problem Below are several situations that may arise followed by possible causes and suggested ac tions you might take Troubleshooting The following sections list possible situations their causes and suggested actions Incorrect temperature or humidity reading While attempting to measure temperature or humidity the display shows an in correct value or no value atall e Check to see if the sensor is properly s
88. d record 1 is assumed The response is returned in the format lt year gt lt month gt lt day gt DATa DSTatistics RECord ETIMe lt num gt Returns the daily statistics recording end time Example DAT DST REC ETIM Response 23 59 59 The lt num gt parameter specifies the daily statistics record number If none is specified record 1 is assumed The response is returned in the format lt hour gt lt minute gt lt second gt DATa DSTatistics RECord FIND lt year gt lt month gt lt day gt Returns the daily statistics record number for the given date Example DAT DST REC FIND 2003 9 13 Response 25 If no daily statistics were recorded for the given date a 0 is returned DATa DSTatistics RECord VALue lt num gt lt chn gt lt type gt Returns the daily statistics statistical calculation Example DAT DST REC VAL 1 1 1 Response 25 559 0 733 23 097 27 203 4 106 43200 17 16 0 The lt num gt parameter specifies the daily statistics record number The lt chn gt parameter specifies the channel 1 or 2 The lt type gt parameter specifies the statistic average 1 standard deviation 2 minimum 3 maximum 4 spread 5 maximum rate 7 or alarm count 8 Temperature values are in the current temperature unit C of F DATa RECord CLEar Clears all recorded measurement data Example DAT REC CLE This command is password protected To access this command when the SYST PASS REC is enabled the passw
89. d for setting operating parameters to the defined de fault values 8 2 7 1 IDN Returns the instrument identification string that indicates the manufacturer model number serial number and firmware version Example IDN Response HART 1620 A39001 1 00 8 2 7 2 OPT Returns a list of sensor models currently connected to the inputs Example OPT Response 2626 S 0 The model number of the sensor connected to input is reported first The model number of the sensor connected to input 2 is reported second If no sen sor is connected to an input the model number is reported as O The sensor model numbers are enclosed in quotes and separated by a comma 8 2 7 3 RST 108 Sets the instrument settings to defined conditions Example RST The following parameters are set when this command is issued e Sets the measurement period to 2 seconds e Sets the measurement averaging on e Sets printing to the serial port e Sets the temperature units to C e Sets the temperature resolution to 2 decimal places and the relative hu midity resolution to decimal place 8 Digital Communications Interface Commands 8 2 7 4 8 2 7 5 8 2 7 6 8 2 7 7 8 2 7 8 8 2 7 9 e Stops auto logging e Sets the statistical functions SYSTem BEEP Produces a short beep from the speaker SYSTem BOOT VERSion Returns the boot ROM version Example SYST BOOT VERS Response 0 31 SYSTem ERRor Returns a message from t
90. dity lt chn gt UPPer LIMit MINIMAXIDEF Returns the upper humidity alarm limit for the specified channel in RH Example ALAR RHUM1 UPP LIM Response 70 00 8 Digital Communications Interface Commands 8 2 1 35 8 2 1 36 8 2 1 37 8 2 1 38 The RHUMidity suffix lt chn gt specifies the channel 1 or 2 Specifying the MIN MAX or DEF parameter returns the minimum maximum or default value respectively ALARm RHUMidity lt chn gt UPPer LIMit lt float gt IMINIMAXIDEF Sets the upper humidity alarm limit for the specified channel in RH Example ALAR RHUM1 UPP LIM 65 00 The RHUMidity suffix lt chn gt specifies the channel 1 or 2 The lt float gt pa rameter specifies the value for the upper humidity alarm limit Specifying the MIN MAX or DEF parameter sets the upper humidity alarm limit to the mini mum maximum or default value respectively This command may be pass word protected see Section 8 2 10 Password Commands ALARm TEMPurature lt chn gt LOWer Indicates whether a lower temperature alarm event has occurred for the speci fied channel Example ALAR TEMP1 LOW Response 1 The TEMPerature suffix lt chn gt specifies the channel 1 or 2 A value of 1 is returned if a lower temperature alarm event has occurred on the specified chan nel A value of 0 is returned if a lower temperature alarm event has not oc curred on the specified channel ALARm TEMPurature lt chn gt LOWer ENABle
91. e Power Source The thermo hygrometer draws power from the provided power adapter Plug the adapter into a wall outlet of the appropriate voltage and insert the DC plug into the DC power input of the thermo hygrometer Switch the Power On Power is turned on and off with the power switch located below the stand on gt the back panel To switch the power on toggle the power switch to the position To switch power off toggle the power switch to the gt position The instrument takes a few seconds to power up initialize and begin normal operation A self test is performed displaying the channel configuration and status of the system calibration battery power memory and buttons If the thermo hygrometer calibration has expired and the alert message is enabled the user is notified and must press the Enter button to continue initialization If an error message is displayed on power up see Section 11 Troubleshooting Measure Temperature After initialization the temperature and relative humidity measurements for the enabled channels are displayed If recording is enabled the measurements will be automatically stored in memory The display can be configured to display the measurements in a variety of numerical and graphical formats For informa tion on the various modes of operation of the thermo hygrometer see Section 7 Menu Functions 5 Parts and Controls Front Panel 5 1 Parts and Controls The functions of
92. e Section 8 2 9 8 SYSTem TIME DAYLight Returns the automatic daylight saving adjustment setting Section 8 2 9 9 SYSTem TIME DAY Light lt num gt IMINIMAXIDEF Sets the automatic daylight saving adjustment setting Section 8 2 9 10 SYSTem TIME FORMat Returns the display time format Section 8 2 9 11 SYSTem TIME FORMat lt num gt IMINIMAXIDEF Sets the display time format Section 8 2 9 12 SYSTem VERSion Returns the SCPI version number Section 8 2 7 8 TRIGger TIMe Returns the measurement period Section 8 2 4 10 TRIGger TIMe lt num gt IMINIMAXIDEF Sets the measurement period Section 8 2 4 11 UNIT TEMPerature Returns the temperature unit Section 8 2 7 9 UNIT TEMPerature lt unit gt Sets the temperature unit Section 8 2 7 10 78 8 Digital Communications Interface Commands Password Commands commands for enabling and disabling the password for setting the password and for checking the password protection state Status Commands commands to report the status and condition of the instrument Each section provides the command structure long and short format a de scription of the command purpose a command example an example of what the command returns as applicable to query commands and notes specific to the command The following apply to each group of commands Upper case letters designate syntax that is required when issuing the com mand Lower case letters are optional and may be omi
93. e inoperable but measuring will continue if the 9V battery is installed If the alarm is enabled the beeper will sound periodically to alert the user of the loss of external power With a fresh alkaline battery measuring will continue during a power outage for typically about 16 hours During normal operation the battery charge is regularly checked and if the low battery alarm is enabled the user will be alerted when the battery charge drops below approximately 50 The battery charge level can be viewed with a display layout that includes a stat type zone with one of the fields set to BATT To prevent inadvertent battery drain remem ber to switch the power switch off when external power is disconnected and the thermo hygrometer is not in use To install or replace the battery follow these steps 1 Switch the power off and unplug the DC power cord 19 1620A DewK Thermo hygrometer User s Guide 20 6 3 6 4 6 5 6 6 2 Turn the thermo hygrometer over to access the rear battery compartment Press down slightly on the battery cover and slide it out to remove it 3 Remove the old battery if one is in place by lifting it up at the bottom and pulling it out 4 Slide the new battery in at an angle observing the proper polarity so the terminals mate correctly then press the bottom of the battery down into the holder 5 Replace the battery cover 6 Replace the DC power cord and switch the power on Used batt
94. eated in the correct sockets e Ifthe actual temperature is too low or too high there may be a problem with the sensor e The measure period may be set to a long interval Check the measure pe riod setting e Refer to Section 6 12 Sensors for information on proper sensor handling and situations that can affect accuracy Missing or Scattered Graph Data If a graph is empty or consists of only scattered points it may be due to data re cording not being enabled or the recording period set too large See Section 7 3 1 1 Record Setting Blank screen The screen appears blank when switched on Ensure the power adapter is attached properly and the power is switched on This problem can also be caused by improper adjustment of the contrast After the power is switched on allow the thermo hygrometer at least one minute to complete its self test and power on sequence Then try to adjust the contrast using the A F buttons Error message at power up The thermo hygrometer reports an error during the power up self test The display will remain inoperable during a power outage to preserve battery life Measurements will continue to be recorded as long as the battery has a charge 139 1620A DewK Thermo hygrometer User s Guide 140 11 1 5 11 1 6 On power up the thermo hygrometer performs a series of self tests to check the operation of all its components and each of the sensors The results of the self tests are rep
95. efer to section 7 5 4 in this manual Q What is the recommended calibration interval of the 1620 A The 1620A does not require calibration The 2626 X probes used with the 1620A should be calibrated annually 145 Index Index A AC adapter 2 19 accessories 11 18 accuracy 9 22 139 air velocity 22 alarm screen 21 average 26 34 46 48 battery 3 11 16 19 67 baud rate 61 buttons 13 17 C calibration 29 133 cautions 3 channel 14 26 clear data 45 clear statistics 50 clock 57 communication 69 condensation 23 contrast 20 31 D daily statistics 46 48 50 59 data recorded 39 date 32 34 57 daylight saving 58 decimal 31 delta 35 dew point 35 display 21 31 display layout 32 E environmental conditions 10 error message 60 139 extension cable 20 F fields display 34 G graph 32 36 40 43 59 H heat index 35 ID sensor 28 L layout display 32 lock sensor 28 maintenance 137 measurement period 26 measuring 21 26 menu functions 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63 65 67 147 Index O operation 19 P password 65 period measurement 26 period printing 61 period recording 40 power 16 power switch 16 20 printing 43 49 61 Q quick buttons 17 quick start 11 R rate of change 27 34 53 rate time 27 recording 21 40 recording period 40 reset display 38 reset statistics 47 49
96. ent address Section 8 2 8 6 SYSTem COMM RADio MODem Returns the RF transceiver modem address Section 8 2 8 7 76 8 Digital Communications Interface Commands Alphabetical List Commands continued Command Description Refer To SYSTem COMM RADio MODem lt num gt Sets the RF transceiver modem address Section 8 2 8 8 SYSTem COMM RADio OPTion Returns RF wireless installation status Section 8 2 8 9 SYSTem COMM RADio PAN Returns the RF transceiver PAN ID address Section 8 2 8 10 SYSTem COMM RADio PAN lt num gt Sets the RF transceiver PAN ID address Section 8 2 8 11 SYSTem COMM RADio SIGNal Returns the RF transceiver signal strength Section 8 2 8 12 SYSTem COMM RADio SNUMber Returns the RF transceiver serial number Section 8 2 8 13 SYSTem COMMunica SERial BAUD Returns the serial port baud rate Section 8 2 8 14 SYSTem COMMunica SERial BAUD Sets the serial port baud rate Section 8 2 8 15 lt num gt IMINIMAXIDEF SYSTem COM Munica SERial FDUPlex Returns the state of the serial port echo Section 8 2 8 16 SYSTem COM Munica SERial FDUPlex lt bool gt Enables or disables the serial port echo Section 8 2 8 17 SYSTem COM Munica SERial FEED Returns the state of the serial port auto printing Section 8 2 8 18 SYSTem COMMunica SERial FEED lt bool gt Enanbles or disa
97. eries must be disposed of properly See Section 1 2 1 Warnings Sensor Configuration The thermo hygrometer can be used with one or two sensors of either type at tached at either of the two ports Extension cables can be used with the sensors to allow the sensors to be placed at remote locations The extension cables can be up to 30m 100 ft in length When a sensor is attached the thermo hy grometer detects the sensor automatically reads its calibration parameters and begins to measure if the channel is enabled see Section 6 9 Measuring Power Switch To operate the thermo hygrometer slide the rear power switch to the ON position When the thermo hygrometer is not being used slide the power switch to the OFF O position before disconnecting the power source to preserve the battery Power On Self Test When power is turned on the thermo hygrometer performs a self test checking the system sensors sensor calibration parameters memory and buttons If an error occurs an error message is displayed See Section 11 Troubleshooting for additional information on error messages Display Contrast If the display appears too dark or too light you can use the A and W buttons at the main screen to adjust the contrast The contrast can also be adjusted from the DISPLAY SETTING menu see Section 7 2 1 Display Setting 6 General Operation Display 6 7 6 8 6 9 6 10 6 11 6 12 Display The thermo hygrom
98. ermo hygrometer User s Guide 5 8 Accessories The following accessories are available to compliment either the high accuracy or standard thermo hygrometer readout 2626 S Spare Sensor Standard Accuracy 2627 S Spare Sensor Kit includes a standard accuracy probe 2626 S sensor case 2607 sensor wall mount bracket 2630 and 25 foot 7 6 m extension cable 2628 2626 H Spare Sensor High Accuracy 2627 H Spare sensor Kit includes a high accuracy sensor 2626 H sen sor case 2607 sensor wall mount bracket 2630 and 25 foot 7 6 m extension cable 2628 2607 Spare Sensor Protective Case 2628 Extension cable 25 foot 7 6 m 2629 Extension cable 50 foot 15 2 m 2630 Sensor wall mount bracket 9328 Protective Case includes space for a 1620A Thermo Hygrometer two sensors RS 232 cable and power cord 2361 Spare Power Supply 100 240 VAC to 12 VDC 9936A LogWare III single PC license 9936A L1 License LogWare III 1 pack 9936A L5 License Log Ware III 5 pack 9936A L10 License LogWare III 10 pack 9936A LST License LogWare III site 9936A UPG Software 9936A Upgrade from v1 X 2633 RF Option Factory Installed Wireless Dewk Model 2633 USB or Model 2633 232 receiver required to communicate with this option 2633 USB Receiver USB to wireless requires 2633 RF 2633 232 Receiver RS 232 to wireless requires 2633 RF 6 General Operation DC Power Source 6 1 6 2 General Operation This section exp
99. esponse to this command consists of the number of bytes of data in this response lt bytes gt followed by a marker 11 followed by a string of bi nary data lt binary data gt The number of bytes in the lt binary data gt portion of the response may be anywhere between 1 and lt num gt bytes 256 if lt num gt is not specified Use the DATa RECord OPEN command to determine the exact number of bytes in the open set of data 101 1620A DewK Thermo hygrometer User s Guide 102 8 2 3 25 8 2 3 26 8 2 4 8 2 4 1 8 2 4 2 8 2 4 3 8 2 4 4 DATa RECord TIME MINIMAXIDEF Returns the data recording period in seconds Example DAT REC TIME Response 120 Specifying the MIN MAX or DEF parameter returns the minimum maxi mum or default value respectively DATa RECord TIME lt num gt MINIMAXIDEF Sets the data recording period setting in seconds Example DAT REC TIME 60 The lt num gt parameter indicates the number of seconds between recording readings to memory Specifying the MIN MAX or DEF parameter sets the data recording period to the minimum maximum or default value respectively This command may be password protected see Section 8 2 10 Password Commands Measurement Control Commands The measurement control commands are used to access settings related to the sensors and the measurement activities INITiate Provided for compatibility but has no effect INITiate CONTinuous Ret
100. et time Example DAT DST RHO 0 The lt num gt parameter specifies the hour for the daily statistics reset time Specifying MIN MAX or DEF parameter sets the daily statistics reset time to the minimum maximum or default value respectively This command may be password protected see Section 8 2 10 Password Commands 8 2 3 9 DATa DSTatistics RECord BTIMe lt num gt Returns the reset time for a daily statistics set Example DAT DST REC BTIM Response 0 0 0 The lt num gt parameter specifies the daily statistics record number If none is specified then record 1 is assumed The response is returned in the format lt hour gt lt minute gt lt second gt 8 2 3 10 DATa DSTatistics RECord CLEar Clears all daily statistics records Example DAT DST REC CLE This command may be password protected see Section 8 2 10 Password Commands 8 2 3 11 DATa DSTatistics RECord COUNt lt MAX gt Returns the daily statistics record count Example DAT DST REC COUN Response 64 Specifying the MAX parameter returns the maximum number of daily statistics records than can be held in memory 8 2 3 12 DATa DSTatistics RECord DATE lt num gt 98 Returns the daily statistics recording date Example DAT DST REC DATE Response 2003 9 12 8 Digital Communications Interface Commands 8 2 3 13 8 2 3 14 8 2 3 15 8 2 3 16 8 2 3 17 The lt num gt parameter specifies the daily statistics record number If none is specifie
101. eter display is originally configured with six default display layouts enabled The user can enable and configure any of the 16 display lay outs to show a variety of data in numerical or graphical format see Section 7 2 2 Display Layout Enabled display layouts can be quickly selected from the main screen using the lt and b gt buttons Alarm Screen The Alarm Screen can be accessed from the main screen by pressing Exit or by entering the Alarm Menu see Section 7 4 Alarm Menu If enabled the alarm screen will appear automatically when an alarm event occurs When an alarm is displayed the event can be either hidden by pressing Exit or cleared by pressing Enter Measuring The thermo hygrometer will automatically make measurements on enabled channels at the set period when a sensor is attached Channels are enabled us ing the CHANNEL SETTING function in the CHANNEL menu see Section 7 3 1 1 Record Setting The measurement period is also set with this function Unit of Temperature The thermo hygrometer is capable of displaying temperature in Celsius C or Fahrenheit F The unit of temperature applies to temperature measurements on either channel that are displayed recorded or printed Recorded data is viewed or printed with the currently set unit of temperature The unit of tem perature is set using the DISPLAY SETTING function in the DISPLAY menu see Section 7 2 1 Display Setting or the SYSTEM SETTING function in the SYSTEM
102. etween C Celsius or F Fahrenheit This may be password protected with the SENSOR password parameter see Section 7 5 4 Password 56 7 Menu Functions System Menu 7 5 2 When the measurement unit is changed and the Enter button is selected the next measurement is displayed in the new measurement unit Figure 40 System Setting The Y buttons are used to change the setting parameters Press the Enter button to save the new setting Press the Exit button to cancel any changes and exit to the menu Date Time The DATE TIME function is used for setting the time of day clock time for mat date and date format This may be password protected using the TIME password parameter in the PASSWORD menu function see Section 7 5 4 Password 57 1620A DewK Thermo hygrometer User s Guide 58 When this function is selected available parameters are HOUR MINUTE SECOND T FORM DAY MONTH YEAR D FORM and DAYL S 21 901 29 2 22 06 42 09 04 2003 Figure 41 Date Time oe Pi E ia Si AO a a mao HA H T fa ae i E D 7 DA ron cdi The HOUR parameter allows the user to set the time of day clock hour 0 through 23 The MINUTE parameter allows the user to set the time of day clock minutes 0 through 59 The SECOND parameter allows the user to set the time of day clock seconds 0 through 59 The T FORM parameter allows the user to set the time format used for display
103. f 0 is returned SYSTem PASSword STATistics lt bool gt Sets the state of the statistics settings password protection Example SYST PASS STAT 1 The lt bool gt parameter turns the statistics settings password protection on 1 or ON or off 0 or OFF This command is password protected Commands pro tected with this setting are CALC AVER CLE and DATA DST SYSTem PASSword TIME Returns the state of the date and time password protection Example SYST PASS TIME Response 0 A value of 1 is returned if the date and time password protection is enabled otherwise a value of 0 is returned SYSTem PASSword TIME lt bool gt Sets the state of the date and time password protection Example SYST PASS TIME 1 The lt bool gt parameter turns the date and time password protection on 1 or ON or off 0 or OFF This command is password protected Commands pro 8 Digital Communications Interface Commands 8 2 11 8 2 11 1 8 2 11 2 8 2 11 3 8 2 11 4 tected with this setting are SYST DATE SYST DATE FORM SYST TIME SYST TIME DAYL and SYST TIME FORM Status Commands The status commands are used for querying and setting the state of the instru ment registers For details on the operation of the status registers refer to the SCPI standards CLS Clears the status registers Example CLS This clears the error queue Event Status Register Operation Status Register Questionable Status Register Alarm Status
104. fficult to find the cause of the error Before contacting an Authorized Service Center for assistance the following steps can be followed to restore normal operation of the DewK Disconnect the sensors Switch the DewK power off wait 10 seconds Switch the DewK power on and wait until it is ready J 2 3 4 Connect the sensors 5 Enable measuring on the sensor if it was disabled 6 Check the ID and calibration parameters of the sensors Downloading Recorded Data The thermo hygrometer stores up to 400 000 readings in its memory These readings can be downloaded to a computer using the RS 232 serial port The following steps should be followed to download logged data using the se rial port 1 Connect the thermo hygrometer to a COM port on the computer using the serial cable 2 Runa terminal program such as Windows r Terminal or HyperTerminal r a Set up the terminal program to use the correct COM port and baud rate Configure the communication settings to use 8 data bits 1 stop bit no parity and no flow control b If you want to save the downloaded data to a file configure your ter minal program to capture the incoming text and save it to a text file Refer to your terminal program s documentation for details on how to do this 3 Begin downloading the data 141 1620A DewK Thermo hygrometer User s Guide 142 11 3 11 3 1 11 3 1 1 a Use the menu function DATA RECORD DATA PRINT to
105. ffix lt chn gt specifies the channel 1 or 2 The lt float gt pa rameter specifies the value for the lower temperature alarm limit Specifying the MIN MAX or DEF parameter sets the lower temperature alarm limit to the minimum maximum or default value respectively The lt float gt value is always in the current temperature units C or F This command may be password pro tected see Section 8 2 10 Password Commands 8 2 1 41 ALARm TEMPurature lt chn gt RATE Indicates whether a temperature rate alarm event has occurred Example ALAR TEMP1 RATE Response 0 The TEMPerature suffix lt chn gt specifies the channel 1 or 2 A value of 1 is returned if a temperature rate alarm event has occurred on the specified chan nel A value of 0 is returned if a temperature rate alarm event has not occurred on the specified channel 8 2 1 42 ALARm TEMPurature lt chn gt RATE ENABle 88 Returns the state of the temperature rate alarm enable for the specified channel Example ALAR TEMP1 RATE ENAB Response 0 The TEMPerature suffix lt chn gt specifies the channel 1 or 2 A value of 1 is returned if the temperature rate alarm is enabled A value of 0 is returned if the temperature rate alarm is disabled 8 Digital Communications Interface Commands 8 2 1 43 8 2 1 44 8 2 1 45 8 2 1 46 ALARm TEMPurature lt chn gt RATE ENABle lt bool gt Sets the state of the temperature rate alarm enable for the specified channel
106. fore subsequent commands are processed Some commands might take noticeable time to execute during which time no other commands will be executed Incorrect or invalid commands produce error messages that are stored in the er ror queue The error queue can be read using the command SYST ERR also see Section 7 5 3 Comm Setting Commands Table 4 Alphabetical List of Commands lists the commands in alphabetical or der In this section the commands are arranged into the following groups Alarm Commands commands for alarm settings Measurement Commands commands for reading measurement data Data Commands commands for setting and reading data information Measurement Control Commands commands for the timing and action of the measurement process Channel Commands commands for selecting channels Calibration Commands commands for calibration settings System Commands commands for general system configuration parameters Communication Interface Commands commands for controlling the inter face configuration serial LAN and optional RF ports Date and Time Commands commands for setting the date time and the date and time formats 71 1620A DewK Thermo hygrometer User s Guide Table 4 Alphabetical List Commands Command Description Refer To CLS Clear the status registers Section 8 2 11 1 ESE Returns the Standard Event Status Enable register Section 8 2 11 2 ESE l
107. from a remote computer over an Ethernet IP network Redirector software can be installed on a computer to map the TCP IP link to a virtual COM port Com munications uses TCP port 10001 Windows Hyperterminal may also be used The settings for configuring and operating the LAN interface are ex plained in Section 7 5 3 3 Commands that might change operating settings can only be used if the COMMAND setting is ON The LAN interface operates on either a 10Base T or 100Base TX Ethernet IP network A CAT 5 Ethernet cable attaches to the thermo hygrometer readout at the RJ45 socket on the left side of the instrument The RJ45 socket has two LED indicators The bottom LED indicates link state off for no connection amber for 10 Mbps and green for 100 Mbps The top LED indicates link activ ity off for no activity amber for half duplex and green for full duplex Command Syntax The thermo hygrometer readout accepts commands that set parameters execute functions or respond with requested data These commands are in the form of strings of ASCII encoded characters As far as possible the thermo hygrometer readout conforms to SCPI 1994 One notable exception is that compound com mands are not allowed as explained below Commands consist of a command header and if necessary parameter data All commands must be terminated with either a carriage return ASCII 0D hex 13 decimal or new line character ASCII OA hex 10 decimal Command headers cons
108. gister is set and its corre sponding mask bit in the Alarm Status Enable Register is set It is cleared when the Alarm Sta tus Event Register is read Bit 2 Error Bit Indicates there is an error in the error queue Bit 3 Questionable Status Bit Indicates that a bit in the Questionable Status Event Register is set and its corresponding mask bit in the Questionable Status Enable Register is set It is cleared when the Questionable Status Even Register is read Bit 4 Message Available Bit Indicates that data is present in the output queue Bit 5 Standard Event Bit Indicates that a bit in the Standard Event Register is set and its correspond ing mask bit in the Standard Event Enable Register is set It is cleared when the Standard Event Register is read Bit 6 Master Summary Bit Indicates that any other bit in the Status Byte Register is set and its corre sponding mask bit in the Service Request Enable Register is set Bit 7 Operation Status Bit Indicates that a bit in the Operation Status Event Register is set and its corresponding mask bit in the Operation Status Enable Register is set It is cleared when the Operation Status Event Register is read The Status Byte Register can not be set or cleared directly but always reflects the current state of the reported conditions Example STB Response 4 TST lt bool gt Reports the results of the self test Example TST Response 1 1 0 2 0 0 0 0 0 0 This lt bool gt pa
109. gt parameter is a number from 0 to 63 that is the sum of the bi nary weighted values of each mask bit The Alarm Status Event Register is de scribed in Section 8 4 11 9 STATus ALARm The following example causes the Alarm Status Bit in the Status Byte Register to be set when a power failure alarm has been triggered Example STAT ALAR ENAB 32 Response 32 STATus MEASure This command reads and clears the Measure Status Event Register The value returned indicates the condition of each of the eight bits of the register by add ing the binary weighted values of each bit The meaning of each bit when set 1 is as follows where 0 is the least significant and 7 is the most significant Bit 0 Channel 1 temperature measure bit Bit 1 Channel 1 humidity measure bit 8 Digital Communications Interface Commands 8 2 11 14 8 2 11 15 8 2 11 16 Bit 2 Channel 2 temperature measure bit Bit 3 Channel 2 humidity measure bit Bit 4 Channel 1 sensor attached detached Bit 5 Channel 2 sensor attached detached Bit 6 Not used Bit 7 Not used Example STAT MEAS Response 3 STATus MEASure CONDition This command reads the Measurement Status Condition Register Reading this register does not affect it The value returned indicates the condition of each of the eight bits of the register by adding the binary weighted values of each bit The meaning of each bit when set 1 is as follows where 0 is the least signifi cant a
110. hangeable screen setups e Power 12 VDC from external 110 240 VAC to DC converter e Uses a standard 9V battery backup to allow continued measuring during power interruptions 3 Specifications and Environmental Conditions Specifications 3 1 Specifications and Environmental Conditions Specifications Temperature Range 0 C to 50 C Temperature Accuracy 16 C to 24 C 60 8 F to 75 2 F 0 125 C 0 225 F calibrated H Model 0 C to 16 C 32 F to 60 8 F 0 5 C 0 9 F uncalibrated typical 24 C to 50 C 75 2 F to 122 F 0 5 C 0 9 F uncalibrated typical Temperature Accuracy 15 C to 35 C 59 F to 95 F 0 25 C 0 45 F calibrated S Model 0 C to 15 C 32 F to 59 F 0 5 C 0 9 F uncalibrated typical 35 C to 50 C 95 F to 122 F 0 5 C 0 9 F uncalibrated typical Delta Temperature 0 025 C 0 045 F for 1 C 1 8 F Accuracy changes within 15 C to 35 C 59 F to 95 F Temperature Display User selectable up to 0 001 C 0 01 C recorded Resolution RH Range 0 to 100 RH RH Accuracy 20 to 70 RH 1 5 RH calibrated H Model 0 to 20 RH 70 to 100 RH 3 RH uncalibrated typical RH Accuracy 20 to 70 RH 2 RH calibrated S Model 0 to 20 RH 70 to 100 RH 3 RH uncalibrated typical Delta Humidity 1 0 for 5 changes within 20 to 70 RH Accuracy RH Display Resolution Use
111. he channel 1 or 2 A value of 1 is returned if the specified channel is on A value of 0 is returned if the specified channel is off ROUTe CLOSe lt chn gt Switches on the specified channel Example ROUT CLOS 1 The lt chn gt parameter specifies the channel 1 or 2 to switch on This com mand may be password protected see Section 8 2 10 Password Commands ROUTe OPEN lt chn gt Returns the state of the specified channel Example ROUT OPEN 1 Response 0 The lt chn gt parameter specifies the channel 1 or 2 A value of 1 is returned if the specified channel is off A value of 0 is returned if the specified channel is on ROUTe OPEN lt chn gt Switches off the specified channel Example ROUT OPEN 1 The lt chn gt parameter specifies the channel 1 or 2 to switch off This com mand may be password protected see Section 8 2 10 Password Commands Calibration Commands The calibration commands are used to access the sensor calibration parameters The calibration commands are always password protected 105 1620A DewK Thermo hygrometer User s Guide 8 2 6 1 CALibrate lt chn gt ALERt Returns the state of the sensor calibration expired alert enable for the specified channel Example CAL1 ALER Response 0 The CALibrate suffix lt chn gt specifies the channel 1 or 2 A value of 1 is re turned if the calibration alert is enabled for the specified channel A value of 0 is returned if the calibratio
112. he serial port linefeed setting Example SYST COMM SER LIN 1 The lt bool gt parameter turns serial port linefeed on 1 or ON or off 0 or OFF SYSTem COMMunicate SERial TiMe MINIMAXIDEF Returns the serial port auto printing period in seconds Example SYST COMM SER TIM 8 Digital Communications Interface Commands 8 2 8 23 8 2 8 24 8 2 8 25 8 2 8 26 8 2 8 27 8 2 8 28 8 2 8 29 8 2 8 30 Response 10 Specifying the MIN MAX or DEF parameter returns the minimum maxi mum or default value respectively SYSTem COMMunicate SERial TlMe lt num gt IMINIMAXIDEF Sets to serial port sample period setting in seconds Example SYST COMM SER TIM 120 The lt num gt parameter can be one of the following values 1 2 5 10 15 30 60 120 300 600 900 1200 1800 or 3600 If a value other than one listed here is used the instrument automatically selects the nearest acceptable value that is less than the value entered Values greater than 3600 or less than 1 are ignored Specifying the MIN MAX or DEF parameter sets the sample period setting to the minimum maximum or default value respectively SYSTem COMMunicate SOCKet ADDRess Returns the LAN port IP address SYSTem COMMunicate SOCKet ADDRess lt addr gt Sets the LAN port IP address applied if DHCP is off when the LAN port is subsequently enabled or reset The address lt addr gt has the format 255 255 255 255 SYSTem COMMunicate SOCKet COMMand
113. he system error queue Example SYST ERR Response 0 No error The error queue may contain up to ten messages The messages are reported in the order they occurred Reading a message from the queue removes the mes sage so the next message can be read If more than ten errors occur before be ing read the tenth error in the queue is 350 Queue overflow and all but the first nine errors are discarded All errors cause the Error Bit ERR bit 2 for the Status BYTE Register to be set see Section 8 2 11 7 Refer to Troubleshoot ing section for the error messages SYSTem CODE VERSion Returns the firmware version Example SYST CODE VERS Response 1 00 SYSTem VERSion Returns the SCPI version number Example SYST VERS Response 1994 0 UNIT TEMPerature Returns the system temperature unit Example UNIT TEMP Response C 109 1620A DewK Thermo hygrometer User s Guide 110 8 2 7 10 8 2 8 8 2 8 1 8 2 8 2 8 2 8 3 8 2 8 4 8 2 8 5 8 2 8 6 8 2 8 7 8 2 8 8 The response is either C for Celsius or F for Fahrenheit UNIT TEMPerature lt unit gt Sets the system temperature unit Example UNIT TEMP C The lt unit gt parameter must be either C or CEL for Celsius or F or FAR for Fahrenheit The RST command sets the temperature unit to Celsius Communication Interface Commands The communication interface commands are used for querying and setting se rial RS 232 settings RF w
114. his instrument 121 1620A DewK Thermo hygrometer User s Guide 122 8 2 11 5 8 2 11 6 8 2 11 7 2 Query error QYE An attempt has been made to read data when none is available or pending 3 Device dependent error DDE A hardware error condition occurred 4 Execution error EXE An invalid parameter for a command has been received or the command could not be executed under existing conditions 5 Command error CME An unrecognized command or a command with improper syntax has been received 6 User request URQ No function for this instrument 7 Power on PON Always set after the power is switched on The ESB bit of the Status Byte Register Section 8 2 11 7 is set 1 whenever any bit of the Event Status Register is set and its corresponding mask bit in the Event Status Enable Register Section 8 2 11 2 is set The Event Status Regis ter is cleared when queried with the ESR command or when the CLS com mand is received The response in the following example would be given after an invalid command is received by the 1620A and no other error occurred Example command ESR Example response 32 SRE Returns the Service Request Enable Register See SRE lt num gt command below Example SRE Response 0 SRE lt num gt MINIMAXIDEF This command sets the Service Request Enable Register This register deter mines which event bits of the Status Byte Register affect the MSS Master Sum m
115. ice Hart reserves the right to invoice Buyer for importation costs of repairs replacement parts when product purchased in one country is submitted for repair in another country Hart s warranty obligation is limited at Hart s option to refund of the purchase price free of charge re pair or replacement of a defective product which is returned to a Hart authorized service center within the warranty period To obtain warranty service contact your nearest Hart authorized service center or send the product with a description of the difficulty postage and insurance prepaid FOB Destination to the nearest Hart au thorized service center Hart assumes no risk for damage in transit Following warranty repair the prod uct will be returned to Buyer transportation prepaid FOB Destination If Hart determines that the failure was caused by misuse alteration accident or abnormal condition or operation or handling Hart will provide an estimate or repair costs and obtain authorization before commencing the work Following repair the product will be returned to the Buyer transportation prepaid and the Buyer will be billed for the repair and return transportation charges FOB Shipping Point THIS WARRANTY IS BUYER S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO ANY IM PLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE HART SHALL NOT BE LIABLE FOR ANY SPECIAL IN
116. ing the time The choices are 12 hour format or 24 hour format The DAY parameter allows the user to set the current day of the month 1 31 The MONTH parameter allows the user to set the current month 1 12 The YEAR parameter allows the user to set the current year 1999 through 9999 The D FORM parameter allows the user to set the date format used when dis playing the date The choices are M D Y Y M D Y Y YY D M Y Y and D M Y Y Y Y The DAYL S parameter allows the user to set the clock to automatically adjust for daylight saving shifts in the spring and fall The choices are N AMER United States and Canada EUROPE or OFF Be aware that automatic time changes due to the daylight saving time shift fea ture and also manual time changes for that matter will cause discontinuities in the time that may have unusual effects that should be noted 7 Menu Functions System Menu 7 5 3 One possible effect is with recorded daily stats If the record time is reached twice within one day due to a time shift backwards daily stats will be recorded twice for the same date This can happen if the daily stats record time is set to 00 00 the daylight saving mode is set to Europe and a fall backwards time shift occurs Since the time 00 00 occurs twice for one day two daily stats re cords will be created for the same day It can also occur with the North Amer ica daylight saving mode if the daily stats record time is 01 00 since this
117. ireless settings and LAN settings SYSTem COMMunicate RADio CHANnel Returns the RF transceiver channel number SYSTem COMMunicate RADio CHANnel lt num gt Sets the RF transceiver channel number applied when the RF transceiver is sub sequently enabled or reset The channel number lt num gt has the range 12 to 24 SYSTem COMMunicate RADio ENABle Returns the RF transceiver enable state O off or 1 on SYSTem COMMunicate RADio ENABle lt bool gt Sets the RF transceiver enable state O off or 1 on or reset Enabling or reset ting the RF transceiver applies current RF settings This operation may take several seconds to complete SYSTem COMMunicate RADio INSTrument Returns the RF transceiver instrument address SYSTem COMMunicate RADio INSTrument lt num gt Sets the RF transceiver instrument address applied when the RF transceiver is subsequently enabled or reset The address lt num gt has the range 0 to 65535 SYSTem COMMunicate RADio MODem Returns the RF modem address SYSTem COMMunicate RADio MODem lt num gt Sets the RF modem address applied when the RF transceiver is subsequently enabled or reset The address lt num gt has the range 0 to 65535 8 Digital Communications Interface Commands 8 2 8 9 8 2 8 10 8 2 8 11 8 2 8 12 8 2 8 13 8 2 8 14 8 2 8 15 8 2 8 16 SYSTem COMMunicate RADio OPTion Returns the RF wireless installation 0 not installed or 1 installed
118. is off when the LAN port is subsequently enabled or reset The address lt addr gt has the format 255 255 255 255 SYSTem KLOCkout Returns the state of the button panel lockout Example SYST KLOC Response 0 A value of 1 is returned if the button panel is locked out A value of 0 is re turned if the button panel is enabled unlocked SYSTem KLOCkout lt bool gt Sets the state of the button panel lockout Example SYST KLOC 1 The lt bool gt parameter turns the button panel lockout on 1 or ON or off 0 or OFF SYSTem POWer BATTery Returns the current battery charge level Example SYST POW BATT 8 Digital Communications Interface Commands 8 2 9 8 2 9 1 8 2 9 2 8 2 9 3 8 2 9 4 Response 90 The returned value indicates the current percentage of charge remaining in the battery The battery charge level is approximate and should be used only as a guideline Date and Time Commands The date and time commands are used for accessing the date and time related settings SYSTem DATE Returns the clock date Example SYST DATE Response 2003 9 1 The response is returned in the format lt year gt lt month gt lt day gt SYSTem DATE lt year gt lt month gt lt day gt Sets the clock date to the specified year month and day Example SYST DATE 2003 9 17 The lt year gt lt month gt and lt day gt parameters must all be supplied The lt year gt parameter is a four digit numbe
119. isconnect alarm it is two short beeps every measurement period For measure ment alarms it is one long beep every measurement period When the DISPLAY setting is ON an alert message is displayed when an alarm event occurs 51 1620A DewK Thermo hygrometer User s Guide 52 7 4 2 When the PORT setting is ON the alarm port outputs an electrical signal to in dicate that an alarm event has occurred Under normal conditions the output will be OV When an alarm event occurs and PORT is ON the output will be driven at approximately 12V DC The output remains active until alarms are re set see Section 7 4 4 Alarm View The alarm port is disabled while operating on internal battery power The alarm port may be connected to external indicator devices The jack ac cepts a 2 5 mm two conductor subminiature plug Switchcraft 850 The sleeve of the plug is ground and the tip is positive The port can source up to 20 mA of current As part of the start up self test performed when the instrument is switched on the alarm port is briefly activated for approximately 50 ms regardless of the PORT setting This ensures that the alarm port is functioning So OFF DISPLAY PORT Figure 35 Alarm Setting The A F buttons are used to select the menu option The d buttons are used to change the parameter setting Press the Enter button to save the new setting Press the Exit button to cancel any changes and exi
120. ist of one or more mnemonics separated by colons Mnemonics may use letter characters the underscore character _ and possi bly numeric digits as well Commands are not case sensitive Mnemonics often 8 Digital Communications Interface Commands 8 2 have alternate forms Most mnemonics have a long form that is more readable and a short form consisting of three or four characters that is more efficient A mnemonic may end with a numeric suffix that specifies one of a set of inde pendent function blocks such as input channel data paths If a numeric suffix is omitted when a particular block must be specified an error is generated Header suffix out of range Query commands are commands that request data in response Query com mands have a question mark immediately following the command header Responses to query commands are generated immediately and transmitted over the communication interface Responses are terminated with a carriage return the serial interface can be configured to also send a new line character Many commands require parameter data to specify values for one or more pa rameters The command header is separated from the parameter data by a space ASCII 20 hex 32 decimal Multiple parameters are separated by a comma This instrument does not allow compound commands multiple commands per line separated with semicolons All commands are sequential the execution of each command is completed be
121. it Returns the temperature rate alarm limit for the specified channel Section 8 2 1 44 ALARm TEMPerature lt chn gt RATE LIMit lt num gt IMINIMAXIDEF Sets the temperature rate alarm limit for the specified channel Section 8 2 1 45 ALARm TEMPerature lt chn gt SENSor Returns the state of the temperature sensor alarm for the speci fied channel Section 8 2 1 46 ALARm TEMPerature lt chn gt SENSor ENABle Returns the state of the temperature sensor alarm enable for the specified channel Section 8 2 1 47 ALARm TEMPerature lt chn gt SENSor ENABle lt bool gt Enables or disables the temperature sensor alarm for the speci fied channel Section 8 2 1 51 ALARm TEMPerature lt chn gt UPPer Returns the state of the high temperature alarm for the specified channel Section 8 2 1 49 ALARm TEMPerature lt chn gt UPPer ENABle Returns the state of the high temperature alarm enable for the specified channel Section 8 2 1 50 73 1620A DewK Thermo hygrometer User s Guide Alphabetical List Commands continued Command Description Refer To ALARm TEMPerature lt chn gt UPPer ENABle lt bool gt Enables or disables the high temperature alarm for the specified channel Section 8 2 1 51 ALARm TEMPerature lt chn gt UPPer LIMit Returns the high temperture alarm limit for the specified channel Section 8 2 1 52 ALARm TEMPerature lt chn gt UPPer LI
122. ity lt chn gt UPPer LIMit Returns the high humidity alarm limit for the specified channel Section 8 2 1 34 ALARm RHUMidity lt chn gt UPPer LIMit lt num gt IMINIMAXIDEF Sets the high humidity alarm limit for the specified channel Section 8 2 1 35 ALARm TEMPerature lt chn gt LOW Returns the state of the low temperature alarm for the specified channel Section 8 2 1 36 ALARm TEMPerature lt chn gt LOW ENABle Returns the state of the low temperature alarm enable for the specified channel Section 8 2 1 37 ALARm TEMPerature lt chn gt LOW ENABle lt bool gt Enables or disables the low temperature alarm for the specified channel Section 8 2 1 38 ALARm TEMPerature lt chn gt LOW LIMit Returns the low temperature alarm limit for the specified channel Section 8 2 1 39 ALARm TEMPerature lt chn gt LOW LIMit lt num gt IMINIMAXIDEF Sets the low temperature alarm limit for the specified channel Section 8 2 1 40 ALARm TEMPerature lt chn gt RATE Returns the state of the temperature rate alarm for the specified channel Section 8 2 1 41 ALARm TEMPerature lt chn gt RATE ENABle Returns the state of the temperature rate alarm enable for the specified channel Section 8 2 1 42 ALARm TEMPerature lt chn gt RATE ENABle lt bool gt Enables or disables the temperature rate alarm for the specified channel Section 8 2 1 43 ALARm TEMPerature lt chn gt RATE LIM
123. lains basic operation of the thermo hygrometer Detailed oper ation of the thermo hygrometer is explained in Sections 7 and 8 Section 7 ex plains the menu structure and the functions available in the menu structure and Section 8 explains the communications interface for operating the thermo hy grometer remotely DC Power Source The thermo hygrometer requires 12V DC to operate The AC adapter is pro vided to produce the DC power from an AC mains supply Caution For CE compliance and for proper performance use only the AC adapter shipped with the instrument by Hart Scientific If the AC adapter needs to be replaced contact Hart Scientific Authorized Service Center The AC adapter has circuits with high voltages inside that could present danger of electric shock or fire if exposed If the AC adapter is damaged in any way or becomes hot discontinue use immediately discon nect the adapter from any AC supply and replace the adapter Do not at tempt to open repair or continue using a damaged or defective AC adapter The DC output from the AC adapter plugs into the 12 V DC power input on the left side of the instrument see Figure 3 on page 15 Battery The thermo hygrometer uses a 9V battery to maintain continuous measurement and recording during power outages The recommended battery type is a stan dard 9V alkaline battery NEDA 1604A or IEC 6LR61 During a power out age or when the AC adapter is disconnected the display will b
124. llow sensors to be dropped struck or stressed DO NOT overheat sensors beyond their recommended temperature range Keep the sensors clean and away from fluids and dust Authorized Service Centers Please contact one of the following authorized Service Centers to coordinate service on your Hart product Fluke Corporation Hart Scientific Division 799 E Utah Valley Drive American Fork UT 84003 9775 USA Phone 1 801 763 1600 1620A DewK Thermo hygrometer User s Guide Telefax 1 801 763 1010 E mail supportO hartscientific com Fluke Nederland B V Customer Support Services Science Park Eindhoven 5108 5692 EC Son NETHERLANDS Phone 31 402 675300 Telefax 31 402 675321 E mail ServiceDesk fluke nl Fluke Int l Corporation Service Center Instrimpex Room 2301 Sciteck Tower 22 Jianguomenwai Dajie Chao Yang District Beijing 100004 PRC CHINA Phone 86 10 6 5 12 3436 Telefax 86 10 6 5 12 3437 E mail xingye han fluke com cn Fluke South East Asia Pte Ltd Fluke ASEAN Regional Office Service Center 60 Alexandra Terrace 03 16 The Comtech Lobby D 118502 SINGAPORE Phone 65 6799 5588 Telefax 65 6799 5588 E mail antngOsinga fluke com When contacting these Service Centers for support please have the following information available 1 Before You Start Authorized Service Centers Model Number Serial Number Voltage Complete description of the problem 2 Introduction
125. lt addr gt Sets the LAN port subnet mask Section 8 2 8 36 SYSTem DATE Returns the clock date Section 8 2 9 1 SYSTem DATE lt year gt lt month gt lt day gt Sets the clock date Section 8 2 9 2 SYSTem DATE FORMat Returns the display date format 0 mm dd yy 1 mm dd yyyy 2 Section 8 2 9 3 dd mm yy 3 dd yy yyyy SYSTem DATE FORMat lt num gt MINIMAXIDEF Sets the display date format Section 8 2 9 4 SYSTem DECimal FORMat Returns the display decimal option 0 1 Section 8 2 9 5 SYSTem DECimal FORMat lt num gt IMINIMAXIDEF Sets the display decimal option Section 8 2 9 6 SYSTem ERRor Returns the system error log Section 8 2 7 6 SYSTem KLOCkout Returns the state of the button panel lockout Section 8 2 8 37 SYSTem KLOCkout lt bool gt Enables or disables the button panel lockout Section 8 2 8 38 SYSTem PASSword ALARm Returns the state of the alarm settings password protection Section 8 2 10 1 1620A DewK Thermo hygrometer User s Guide Alphabetical List Commands continued Command Description Refer To SYSTem PASSword ALARm lt bool gt Enables or disables the alarm settings password protection Section 8 2 10 2 SYSTem PASSword CDISable Disables password protected commands Section 8 2 10 3 SYSTem PASSword CENable lt num gt Enables password protected commands Section 8 2 10 4 SYSTem PASSword CENable STATe Returns the current password protected state Section 8 2 10 5 SYSTem PASSword C
126. ment has been designed for optimum durability and trou ble free operation it must be handled with care The instrument should not be operated in an excessively dusty dirty or wet environment Maintenance and cleaning recommendations can be found in the Maintenance section of this manual e For full accuracy operate the instrument within the calibrated temperature and relative humidity range of the sensors 1620A DewK e Operating Temperature 0 C to 50 C 32 F to 122 F e Relative Humidity 0 to 70 RH 2626 H S e Operating Temperature 0 C to 50 C 32 F to 122 F e Relative Humidity 0 to 100 RH AC Adapter e Operating Temperature 0 C to 40 C 32 F to 104 F e Relative Humidity 5 to 90 non condensing de rating from 40 C lin early to 50 at 70 C General to all e Pressure 75 kPa 106 kPa e Vibration should be minimized e Altitude less than 2 000 meters e Indoor use only 4 Quick Start Unpacking 4 1 4 2 4 3 4 4 Quick Start This section briefly explains the basics of setting up and operating your thermo hygrometer Unpacking Carefully unpack the thermo hygrometer and inspect the instrument to make sure all components are present and in satisfactory condition Verify that the following items are present e 1620A Thermo Hygrometer e AC adapter and power cord e Serial cable e Manual e Report of calibration e Wall mount bracket e Sensor e 9V battery If all items are not p
127. mit by command from a remote modem see Sec tion 7 5 3 2 The transceiver has been tested and certified for use in various areas worldwide United States The transceiver used in the 1620A Thermo Hygrometer has been approved for use in the United States by FCC Part 15 certification FCC ID OUR XBEE The following statement accompanies the device Contains FCC ID OUR XBEE The enclosed device complies with Part 15 of the FCC rules Operation is sub ject to the following two conditions 1 this device may not cause harmful in terference and 2 this device must accept any interference received including interference that may cause undesired operation This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules These limits are de signed to provide reasonable protection against harmful interference in a resi dential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruc tions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television recep tion which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Re
128. months 20 months 30 minutes 24 months 24 months 1 hour 24 months 24 months A A A a te Figure 22 Record Setting Use the amp buttons to select the setting to change The 4 buttons are used to change the setting parameters Press the Enter button to save the new set ting Press the Exit button to cancel any changes and exit to the menu 41 1620A DewK Thermo hygrometer User s Guide 7 3 1 2 42 Data View The DATA VIEW function allows viewing recorded data in NUMERIC or GRAPHIC format 23 796 40 4 08 53 37 09 04 03 Figure 23 Data View Begin Time CATA LIEW MODE BEGIHA DATA UTE E E SE ced mi e _ a bi pa ba KS Al a 13 20 41 BB eee Bee cs Laced 23 520 42 24 sn s2 oa 13120143 2302C as oe oe eee 13128144 33 880 45 1 LN iige gda Zo Bol di 15 n un n sees 13128146 86 3 a 43 1 n Lizig 23 840 42 1 eeeee anes 13 20 48 23 540 43 0 zasu 2 Figure 24 Data View Numeric Format The numeric mode displays the data in a numeric format The BEGIN parame ter specifies the starting date and time of the data to display Use the lt P but 7 Menu Functions Data Menu 7 3 1 3 tons to adjust the start date and time The format of the start date is according to D FORM in the SYSTEM DATE TIME menu function see Section 7 5 2 Date Time The format of the start time is 24 hour format Press the Enter but
129. mple ALAR RHUMI RATE LIM 1 The RHUMidity suffix lt chn gt specifies the channel 1 or 2 The lt float gt pa rameter specifies the value for the humidity rate alarm limit Specifying the MIN MAX or DEF parameter sets the humidity rate alarm limit to the mini mum maximum or default value respectively This command may be pass word protected see Section 8 2 10 Password Commands ALARm RHUMidity lt chn gt SENSor Indicates whether a humidity sensor alarm event has occurred for the specified channel Example ALAR RHUM1 SENS Response 1 The RHUMidity suffix lt chn gt specifies the channel 1 or 2 A value of 1 is returned if a humidity sensor alarm event has occurred on the specified chan nel A value of 0 is returned if a humidity sensor alarm event has not occurred on the specified channel ALARm RHUMidity lt chn gt SENSor ENABle Returns the state of the humidity sensor alarm enable for the specified channel Example ALAR RHUM1 SENS ENAB Response 0 The RHUMidity suffix lt chn gt specifies the channel 1 or 2 A value of 1 is returned if the humidity sensor alarm is enabled A value of 0 is returned if the humidity sensor alarm is disabled 85 1620A DewK Thermo hygrometer User s Guide 86 8 2 1 30 8 2 1 31 8 2 1 32 8 2 1 33 8 2 1 34 ALARm RHUMidity lt chn gt SENSor ENABle lt bool gt Sets the state of the humidity sensor alarm for the specified channel Example ALAR R
130. n alert is disabled for the specified channel 8 2 6 2 CALibrate lt chn gt ALERt lt bool gt Sets the state of the sensor alert enable for the specified channel Example CAL1 ALER 1 The CALibrate suffix lt chn gt specifies the channel 1 or 2 The lt bool gt pa rameter turns the sensor alert on 1 or ON or off 0 or OFF This command is password protected see Section 8 2 10 Password Commands 8 2 6 3 CALibrate lt chn gt DATE CALibrate Returns the sensor calibration date for the specified channel Example CAL1 DATE CAL Response 2003 9 17 The CALibrate suffix lt chn gt specifies the channel 1 or 2 The response is re turned in the format lt year gt lt month gt lt day gt 8 2 6 4 CALibrate lt chn gt DATE CALibrate lt year gt lt month gt lt day gt Sets the sensor calibration date for the specified channel Example CAL1 DATE CAL 2003 9 17 The CALibrate suffix lt chn gt specifies the channel 1 or 2 The lt year gt lt month gt and lt day gt parameters must all be specified The lt year gt parameter is a four digit number The lt month gt parameter is a one or two digit number 1 to 12 The lt day gt parameter is a one or two digit number 1 to 31 This com mand is password protected see Section 8 2 10 Password Commands 8 2 6 5 CALibrate lt chn gt DATE DUE 106 Returns the sensor calibration due date for the specified channel Example CAL1 DATE DUE Response 2004 9 17 The CA
131. nd 7 is the most significant Bit 0 Channel 1 temperature measure bit Bit 1 Channel 1 humidity measure bit Bit 2 Channel 2 temperature measure bit Bit 3 Channel 2 humidity measure bit Bit 4 Channel 1 sensor attached Bit 5 Channel 2 sensor attached Bit 6 Not used Bit 7 Not used Example STAT MEAS COND Response 15 STATus MEASure ENABle This command returns the Measurement Status Enable Register see STA Tus MEASure ENABle lt num gt command below Example STAT MEAS ENAB Response 15 STATus MEASure ENABle lt num gt MINIMAXIDEF This command sets the Measure Status Enable Register This register deter mines which event bits of the Measure Status Event Register affect the Measure 127 1620A DewK Thermo hygrometer User s Guide Status Bit of the Status Byte Register If any bit in the Measure Status Event Register is set 1 while its corresponding mask bit in the Measure Status En able Register is set the Measure Status Bit in the Status Byte Register will be set The value of the lt num gt parameter is a number from 0 to 15 that is the sum of the binary weighted values of each mask bit The Measure Status Event Reg ister is described in Section 8 4 11 13 STATus MEASure The following ex ample causes the Measure Status Bit in the Status Byte Register to be set when measurements on both channels have been completed Example STAT MEAS ENAB 15 Response 15 8 2 11 17 STATus OPERation
132. nd PAN ID numbers have differ ent INST addresses and likewise all modems have addresses different from each other and all instruments If multiple pairs of devices are to operate simul taneously in range of each other use different CHANNEL numbers to avoid interference The RF interface is based on the 802 15 4 standard which is the basis for the ZigBee It operates in the license free 2 4 GHz frequency band with a very low transmission power of 1 mW Typical unobstructed range is 100 ft 30 m The range might be reduced if RF reflecting walls obstructions or interfering electronic equipment are nearby Some channel numbers might work over far ther ranges than others LAN The LAN port allows the instrument to receive and respond to commands from a remote computer through an Ethernet IP network See Section 8 for a list of commands Redirector software can be installed on a computer to map the TCP IP link with the instrument to a virtual COM port Windows Hyperterminal may also be used Communications uses TCP port 10001 The 63 1620A DewK Thermo hygrometer User s Guide instrument can also serve a simple HTML or web page that allows readings to be observed with a web browser Lan SETTINGS EHABLE PHE t Fd e pa 3 La i r Ta wn Tr en hea i H 1 ee vun Ti wa Te ay ri Figure 45 Lan Settings Selecting LAN for the PORT option in the COMM SETTING menu function presents a
133. nse 12 Specifying the MIN MAX or DEF parameter returns the minimum maxi mum or default value respectively DATa DSTatistics HOUR lt num gt MINIMAXIDEF Sets the state of the daily statistics recording time Example DAT DST HOUR 1 The lt num gt parameter specifies the hour for the daily statistics recording time Specifying MIN MAX or DEF parameter sets the daily statistics recording time to the minimum maximum or default value respectively This command may be password protected see Section 8 2 10 Password Commands DATa DSTatistics RENable Returns the state of the daily statistics reset enable Example DAT DST REN Response 0 A value of 1 is returned if the daily statistics reset is enabled A value of 0 is re turned if the daily statistics reset is disabled DATa DSTatistics RENable lt bool gt Sets the state of the daily statistics reset enable Example DAT DST REN 1 The lt bool gt parameter turns the daily statistics reset on 1 or ON or off 0 or OFF This command may be password protected see Section 8 2 10 Pass word Commands DATa DSTatistics RHOur MINIMAXIDEF Returns the daily statistics reset time Example DAT DST RHO Response 12 97 1620A DewK Thermo hygrometer User s Guide Specifying the MIN MAX or DEF parameter returns the minimum maxi mum or default value respectively 8 2 3 8 DATa DSTatistics RHOur lt num gt MINIMAXIDEF Sets the daily statistics res
134. nstrument s password see Section 7 5 4 before access is allowed If the COMMAND option see above is OFF commands can only be used to read settings but not change them Groups of settings may also be password protected depending on PASSWORD parameter settings The Terminal page opens a persistent TCP connection to the instru ment during which time no other access to the instrument through the LAN in terface by any other computer is possible The connection is closed when the Terminal page is exited Password The PASSWORD function is used for changing the password required for ac cess to password protected parameters and for determining whether or not to password protect those given parameters When this function is selected the PASS parameter is displayed The password must be entered correctly to access the password settings Press the Y buttons to highlight the digit you want to change Use the A V but tons to scroll through the numbers 0 9 to set each digit of the password Press 65 1620A DewK Thermo hygrometer User s Guide the ENTER button to accept the password or press the EXIT button to cancel any changes and exit to the menu T a Pas slik 2 1 94 C Enter Passuord E 29 2 oy PASS 1628 22 08 25 09 04 2003 Figure 46 Password By default the password is set to 1620 when the instrument ships from the factory We recommend the user changes the default password to secure the password protected
135. o verify access SYSTem PASSword CENable STATe Returns the current password protection state Example SYST PASS CEN STAT Response 0 The response is either 0 disabled or 1 enabled A response of 0 indicates password protected settings cannot be changed A response of 1 indicates the password was successfully entered and password protected settings can be changed 8 Digital Communications Interface Commands 8 2 10 6 8 2 10 7 8 2 10 8 8 2 10 9 8 2 10 10 8 2 10 11 SYSTem PASSword COMM Returns the state of communication settings front panel password protection A value of indicates protection is enabled 0 otherwise SYSTem PASSword COMM lt bool gt Sets the state fo communication settings front panel password protection lt Bool gt enables protection 0 disables protection SYSTem PASSword NEW lt pass gt IDEF Sets the current system password to a new password Example SYST PASS NEW 1212 The lt pass gt parameter must be a 4 digit number 0000 to 9999 Specifying the DEF parameter resets the password to the default password 1620 This com mand is password protected Note If the password is forgotten the themo hygrometer must be returned to an Authorized Service Center to have the password restored SYSTem PASSword RECord Returns the state of data recording settings password protection Example SYST PASS REC Response 0 A value of 1 is returned if data recording password settings are p
136. occurred for the speci fied channel Example ALAR TEMP1 SENS Response 0 The TEMPerature suffix lt chn gt specifies the channel 1 or 2 A value of 1 is returned if a temperature sensor alarm event has occurred on the specified channel A value of 0 is returned if a temperature sensor alarm event has not occurred on the specified channel 89 1620A DewK Thermo hygrometer User s Guide 8 2 1 47 ALARm TEMPurature lt chn gt SENSor ENABle Returns the state of the temperature sensor alarm enable for the specified channel Example ALAR TEMP1 SENS ENAB Response 0 The TEMPerature suffix lt chn gt specifies the channel 1 or 2 A value of 1 is returned if the temperature sensor alarm is enabled A value of 0 is returned if the temperature sensor alarm is disabled 8 2 1 48 ALARm TEMPurature lt chn gt SENSor ENABle lt bool gt Sets the state of the temperature sensor alarm enable for the specified channel Example ALAR TEMP1 SENS ENAB 1 The TEMPerature suffix lt chn gt specifies the channel 1 or 2 The lt bool gt pa rameter turns the temperature sensor alarm on 1 or ON or off 0 or OFF This command may be password protected see Section 8 2 10 Password Commands 8 2 1 49 ALARm TEMPurature lt chn gt UPPer Indicates whether an upper temperature alarm event has occurred Example ALAR TEMP1 UPP Response 0 The TEMPerature suffix lt chn gt specifies the channel 1 or 2 A value of 1 is returned
137. ol gt o 89 8 2 1 44 ALARm TEMPurature lt chn gt RATE LIMit MINIMAXIDEF 89 8 2 1 45 ALARm TEMPurature lt chn gt RATE LIMit lt float gt IMINIMAXIDEF 89 iii iv 8 2 1 46 ALARm TEMPurature lt chn gt SENSor 2 2 e e 89 8 2 1 47 ALARm TEMPurature lt chn gt SENSor ENABle o o 90 8 2 1 48 ALARm TEMPurature lt chn gt SENSor ENABle lt bool gt 0 90 8 2 1 49 ALARm TEMPurature lt chn gt UPPer 2 ee 90 8 2 1 50 ALARm TEMPurature lt chn gt UPPer ENABle o o o o o o 90 8 2 1 51 ALARm TEMPurature lt chn gt UPPer ENABle lt bool gt 0 o o o 90 8 2 1 52 ALARm TEMPurature lt chn gt UPPer LIMit MINIMAXIDEF 91 8 2 1 53 ALARm TEMPurature lt chn gt UPPer LIMit lt float gt IMINIMAXIDEF 91 8 2 1 54 ALARM TIMEFIRS ee oaa ai Ae eee 91 8 21 55 ALARM TIME LAS OT Poca aura dea a a e aa a a ee ted 91 8 2 2 Measurement Commands e sa ccoa sas aca a na u eee aa d 92 S221 CALCilate AVERago CLEA 5 2 e aka a dee dea en Gear E Ae a a 92 8 2 2 2 CALCulatecchn DEWPoint ass eripe sresre aaiae a aS 92 8 2 2 3 CALCulaisechi HINDER e a ane ee a ae a as ae Ge ad 92 8 2 2 4 CALCulate lt chn gt PARameter lt num gt AVERage lt type gt 0 o oo 92 8 2 2 5 CALCulate lt chn gt PARameter lt num gt AVERage lt type gt CLEar 92 8 2 2 6 CALCulate lt chn gt PARameter lt num gt AVERage lt ty
138. on has expired Sth number clock status 0 operating properly bit 0 is 1 time date is invalid bit 1 is 1 clock is not operating 6th number serial port status 0 operating properly bit 0 is 1 failure 7th number RF transceiver status 0 operating properly bit 0 is 1 failure or not installed 8th number LAN port status 0 operating properly bit 0 is 1 failure 124 8 Digital Communications Interface Commands 8 2 11 9 8 2 11 10 9th number battery monitor test 0 no error bit 15 is 1 error 10th number button status power on test only 0 no button press detected bitO is 1 EXIT pressed during power on bit 1 is 1 lt up gt pressed during power on bit 2 is 1 lt down gt pressed during power on bit 3 is 1 lt right gt pressed during power on bit 4 is 1 lt left gt pressed during power on bit 5 is 1 ENTER pressed during power on STATus ALARm This command reads and clears the Alarm Status Event Register The value re turned indicates the condition of each of the eight bits of the register by adding the binary weighted values of each bit The meaning of each bit when set 1 is as follows where 0 is the least significant and 7 is the most significant 0 no alarm Bit 0 Channel 1 temperature alarm bit Bit 1 Channel 1 humidity alarm bit Bit 2 Channel 2 temperature alarm bit Bit 3 Channel 2 humidity alarm bit Bit 4 Low battery alarm bit Bit 5 Power failure alarm bit Bit 6 Not used
139. ooo ooo 112 8 2 8 21 SYSTem COMMunicate SERial LINefeed lt bool gt o o o o 112 8 2 8 22 SYSTem COMMunicate SERial TIMe MINIMAXIDEF 12 8 2 8 23 SYSTem COMMunicate SERial TIMe lt num gt IMINIMAXIDEF 113 8 2 8 24 SYSTem COMMunicate SOCKet ADDRess 2 o o o 113 8 2 8 25 SYSTem COMMunicate SOCKet ADDRess lt addr gt o o o 113 8 2 8 26 SYSTem COMMunicate SOCKet COMMand 0 o oo o 113 8 2 8 27 SYSTem COMMunicate SOCKet DHCP o o oo e 113 8 2 8 28 SYSTem COMMunicate SOCKet DHCP lt bool gt o o o o o o 113 8 2 8 29 SYSTem COMMunicate SOCKet ENABle o o o o o o 113 8 2 8 30 SYSTem COMMunicate SOCKet ENABle lt bool gt o o o o 113 8 2 8 31 SYSTem COMMunicate SOCKet GATeway lt o e o coore o roopan adaa 114 vi 8 2 8 32 SYSTem COMMunicate SOCKet GATeway lt addr gt o o o 114 8 2 8 33 SYSTem COMMunicate SOCKetHTML o o oaceae nenne o 114 8 2 8 34 SYSTem COMMunicate SOCKet MAC o oo o 114 8 2 8 35 SYSTem COMMunicate SOCKet MASK o o o e 114 8 2 8 36 SYSTem COMMunicate SOCKet MASK lt addi gt o o o 114 8 28 37 SYSTEM KLOCK oa aa ck eae ae AA aa wa ae e A 14 2 3 38 SYSTem KLOCkout lt bool gt 05 6 0 ae pace bie a ee ae ee 114 8 2 8 39 SYSTem POWer BAT ery sis casi io Re Rew bee ave ee Gao a 14 8 2 9 Date and Time Commands erica ria
140. ord Commands Password Commands The password commands are used for enabling and disabling the password pro tected commands for querying and setting the password protected state and for setting a new password These commands are always password protected 117 1620A DewK Thermo hygrometer User s Guide 118 8 2 10 1 8 2 10 2 8 2 10 3 8 2 10 4 8 2 10 5 SYSTem PASSword ALARm Returns the state of the alarm settings password protection Example SYST PASS ALAR Response 0 A value of 1 is returned if the alarm settings are password protected otherwise a value of 0 is returned SYSTem PASSword ALARm lt bool gt Sets the state of the alarm settings password Example SYST PASS ALAR 1 The lt bool gt parameter turns the alarm settings password protection on 1 or ON or off 0 or OFF This command is password protected Commands pro tected with this setting are any of the ALAR commands SYSTem PASSword CDISable Disables access to password protected settings Example SYST PASS CDIS Sending this command prevents the user from changing any password pro tected settings SYSTem PASSword CENable lt pass gt Enables access to password protected settings Example SYST PASS CEN 1234 The lt pass gt parameter must match the current system password This command must be sent to allow the user to change and password protected settings After sending this command use the SYST PASS CEN STAT command t
141. ord in a secure location and do not forget the pass word System Info The SYSTEM INFO function displays information about the thermo hygrome ter The information includes the manufacturer model number serial number firmware version boot version and battery level 21 94 292 22 08 34 09 04 2003 Figure 47 System Info Dr Dye ail A b50 pr pu e i 1 Press the Enter button when you are done viewing the system information or the EXIT button 67 8 Digital Communications Interface Overview 8 1 Digital Communications Interface Overview The communication features allow an external device such as a computer to communicate with the Thermo Hygrometer readout to receive measurement data and control operating settings Communication is accomplished by issuing commands to the Thermo Hygrometer through an RS 232 RF wireless op tional or Ethernet LAN interface Serial RS 232 Figure 48 Serial Cable Wiring A serial RS 232 interface allows connection between the instrument and a stan dard COM port on one computer or terminal through a three conductor cable up to distances of 50 feet typically The serial cable attaches to the Thermo Hygrometer readout through the RS 232 port on the left side of the instrument Figure 48 shows the pin out of this connector and suggested cable wiring Note the TxD line on one side con nects to the RxD line on the other side and vice versa To avoid electrom
142. ord must be successfully entered using the SYST PASS CEN lt pass gt command see Section 8 2 10 Password Commands DATa RECord FEED RHUMidity lt chn gt Returns the state of the humidity recording enable for the specified channel 99 1620A DewK Thermo hygrometer User s Guide 100 8 2 3 18 8 2 3 19 8 2 3 20 8 2 3 21 Example DAT REC FEED RHUM1 Response 1 The RHUMidity suffix lt chn gt specifies the channel 1 or 2 A value of 1 is re turned if the humidity recording for the specified channel is enabled A value of 0 is returned if the humidity recording for the specified channel is disabled DATa RECord FEED RHUMidity lt chn gt lt bool gt Sets the state of the humidity recording enable for the specified channel Example DAT REC FEED RHUM1 0 The RHUMidity suffix lt chn gt specifies the channel 1 or 2 The lt bool gt pa rameter turns the humidity recording for the specified channel on 1 or ON or off 0 or OFF This command may be password protected see Section 8 2 10 Password Commands DATa RECord FEED TEMPerature lt chn gt Returns the state of the temperature recording enable for the specified channel Example DAT REC FEED TEMP1 Response 1 The TEMPerature suffix lt chn gt specifies the channel 1 or 2 A value of 1 is returned if temperature recording for the specified channel is enabled A value of 0 is returned if temperature recording for the specified channel is dis
143. orted on the screen Normally all tests report OK Below is a table of error messages and recommended actions to correct the error Often these errors can be corrected by completing the actions listed A failure of one or more component causes error messages to be reported Contact a Hart Scientific Authorized Service Center for assistance see Section 1 3 Self Test Error Messages SYSTEMS SERIAL PORT FAILURE Cycle the power Contact an Authorized Service Center RF DETECTED Configuration memory lost Contact an Authorized Service Center RF NOT DETECTED RF device not installed or failed Contact an Authorized Service Center LAN FAIL or INVALID LAN port failed Contact an Authorized Service Center BATTERY FAILURE Cycle the power Contact an Authorized Service Center BATTERY NOT INSTALLED Check that a battery is properly installed Replace the battery CLOCK INVALID TIME Set the time date MEMORY DATA EMPTY Contact an Authorized Service Center MEMORY DATA QUESTIONABLE Cycle the power Contact an Authorized Service Center SENSOR lt n gt NOT ATTACHED Check that the sensors are properly inserted into their sockets or attached with an undamaged extension cable SENSOR lt n gt LOCKED Attach the correct sensor or if a new sensor is to be used un lock the sensor using CHANNEL SENSOR LOCK SENSOR lt n gt CALIBRATION INVALID Cycle the power Try a different sensor Contact an Authorized Service Center SENSOR
144. pe gt DATA 93 8 2 2 7 CALCulate lt chn gt PARameter lt num gt AVERage lt type gt TYPE 93 8 2 2 8 CALCulate lt chn gt PARametersnum gt RATE 0 0 o o 93 8 2 2 9 CALCulate lt chn gt PARameter lt num gt RATE TIME MINIMAXIDEF 93 8 2 2 10 CALCulate lt chn gt PARameter lt num gt RATE TIME lt num gt IMINIMAXIDEF 93 8 2 2 11 CALCulate lt chn gt PARameter lt num gt RESolution MINIMAXIDEF 94 8 2 2 12 CALCulate lt chn gt PARameter lt num gt RESolution lt num gt IMINIMAXIDEF 94 8 22 19 ETCH SCA i twee Bod cite A Oe Gace eh a dete ee 94 8 2 2 14 FORMat TDST STATE oo aoc Soe egies ta Boa pb A oe a A te Se 95 8 2 2 15 FORMat TDST STATe lt bool gt o e ais eoe koee ee es 95 82216 MEASure chine iis isa ected Qtr ath e a Gob ecb ane oa ae O 95 8 2217 gt READ Pech au ae otek Rete ect eke Soe eae dete Kee Bede Gp he a dee eee de Moers 96 8 2 3 Data Commands ans ia a vo Se al daa a A 96 8 2 3 DATa DS Tatistics ENABI6 ooo seaside eo doh di Rom Sew ese Bas ke a 96 8 2 3 2 DATa DSTatistics ENABle lt bool gt or ew es 96 8 2 3 3 DATa DSTatistics HOUR MINIMAXIDEF o o o 97 8 2 3 4 DATa DSTatistics HOUR lt num gt IMINIMAXIDEF o o o 97 8 2 3 5 DATa DSTatistics RENable cuco oca ae eh ei aos dca hare 97 8 2 3 6 DATa DSTatistics RENable lt bool gt o 1 2 seis rd 97 8 2 3 7 DATa DSTatistics RH
145. r The lt month gt parameter is a one or two digit number 1 to 12 The lt day gt parameter is a one or two digit number 1 to 31 This command may be password protected see Section 8 2 10 Password Commands SYSTem DATE FORMat MINIMAXIDEF Returns the date format used for the display Example SYST DATE FORM Response 1 Specifying the MIN MAX or DEF parameter returns the minimum maxi mum or default value respectively Section 8 2 12 Date and Time Formats shows the supported date formats SYSTem DATE FORMat lt num gt MINIMAXIDEF Sets the date format used for the display Example SYST DATE FORM 0 The lt num gt parameter can be any of the values indicated in Section 8 2 12 Date and Time Formats Specifying the MIN MAX or DEF parameter sets the date format to the minimum maximum or default value respectively This 115 1620A DewK Thermo hygrometer User s Guide 116 8 2 9 5 8 2 9 6 8 2 9 7 8 2 9 8 command may be password protected see Section 8 2 10 Password Commands SYSTem DECimal FORMat MINIMAXIDEF Returns the decimal format used for the display Example SYST DEC FORM Response 1 A value of 0 is returned if the decimal format is using a period A value of 1 is returned if the decimal format is using a comma Specifying the MIN MAX or DEF parameter returns the minimum maximum or default value respectively SYSTem DECimal FORMat lt num gt MINIM
146. r DEF parameters causes the instrument to use the minimum maximum or default setting respec tively 79 1620A DewK Thermo hygrometer User s Guide e Unrecognized commands or commands with incorrect syntax or invalid parameters generate error messages that are placed in the error queue see Section 8 2 7 6 SYST ERR 8 2 1 Alarm Commands 8 2 1 1 ALARm BATTery Indicates whether a battery alarm event has occurred Example ALAR BATT Response 1 A value of 1 is returned if a battery alarm event has occurred A value of 0 is returned if a battery alarm event has not occurred 8 2 1 2 ALARm BATTery ENABle Returns the state of the battery alarm enable Example ALAR BATT ENAB Response 0 A value of 1 is returned if the battery alarm is enabled A value of 0 is returned if the battery alarm is disabled 8 2 1 3 ALARm BATTery ENABle lt bool gt Sets the state of the battery alarm enable Example ALAR BATT ENAB 1 The lt bool gt parameter turns the battery alarm enable on 1 or ON or off 0 or OFF This command may be password protected see Section 8 2 10 Pass word Commands 8 2 1 4 ALARm BEEP ENABle Returns the state of the audible alarm enable Example ALAR BEEP ENAB Response 0 A value of 1 is returned if the alarm beep is enabled A value of 0 is returned if the alarm beep is disabled 8 2 1 5 ALARm BEEP ENABle lt bool gt 80 Sets the state of the audible alarm enable Example ALAR BEEP ENAB 1 8
147. r as the modem with which this instrument will be communicating Frequencies used by RF commu nication may also be used by other types of equipment with the potential for interference The user might need to try different channels to find one that pro vides the most reliable operation in a particular environment The range of CHANNEL is 12 to 24 PAN ID sets the wireless network identification number For two devices to communicate they must use the same PAN ID number Make sure PAN ID is set to the same number as the modem with which this instrument will be com municating The range of PAN ID is 0 to 65535 INST sets the identifying address of this instrument The instrument will only accept commands that are addressed with this number The remote modem will use this address to send commands to the instrument This address should be distinct from those of other devices on the same network The range of INST is 0 to 65535 MODEM sets the address of the remote modem with which the instrument is to communicate The instrument will send out responses addressed with this num ber The remote modem must also be set to this address to receive the re sponses The range of MODEM is 0 to 65535 When the parameter window is exited there might be a delay of several sec onds as the RF transceiver is updated with the new settings Avoid communication conflicts by making sure all instruments in range of each other that operate with the same CHANNEL a
148. r humidity alarm enable on 1 or ON or off 0 or OFF This command may be password protected see Section 8 2 10 Password Commands ALARm RHUMidity lt chn gt LOWer LIMit MINIMAXIDEF Returns the lower humidity alarm limit for the specified channel in RH 83 1620A DewK Thermo hygrometer User s Guide 84 8 2 1 22 8 2 1 23 8 2 1 24 8 2 1 25 Example ALAR RHUM1 LOW LIM Response 20 00 The RHUMidity suffix lt chn gt specifies the channel 1 or 2 Specifying the MIN MAX or DEF parameter returns the minimum maximum or default value respectively ALARm RHUMidity lt chn gt LOWer LIMit lt float gt IMINIMAXIDEF Sets the lower humidity alarm limit for the specified channel in RH Example ALAR RHUM1 LOW LIM 25 00 The RHUMidity suffix lt chn gt specifies the channel 1 or 2 The lt float gt pa rameter specifies the value for the lower humidity alarm limit Specifying the MIN MAX or DEF parameter sets the lower humidity alarm limit to the mini mum maximum or default value respectively This command may be pass word protected see Section 8 2 10 Password Commands ALARm RHUMidity lt chn gt RATE Indicates whether a humidity rate alarm event has occurred for the specified channel Example ALAR RHUM1 RATE Response 1 The RHUMidity suffix lt chn gt specifies the channel 1 or 2 A value of 1 is returned if a humidity rate alarm event has occurred on the specified channel A
149. r less or at daily intervals for time scales greater than 1 day Time tick marks are labeled at intervals with the hour or day labels being placed below and to the right of tick marks Tick marks with labels are drawn with short con tinuous lines and tick marks without labels are drawn with dotted lines Dashed vertical cursor lines appear in the center of the graphs after they are plotted The cursor can be moved left or right using the 4 or P buttons Hold ing a button in moves the cursor quickly Pressing ENTER locates the latest data point on or to the left of the cursor and causes the temperature relative hu midity time and date of the data point to be displayed Press EXIT to quit and return to the menu Data Print The DATA PRINT function allows recorded data to be printed over the serial port The FORMAT parameter may be set to BINARY or TEXT The BEGIN parameter sets the start date and the start time from which to start printing The 43 1620A DewK Thermo hygrometer User s Guide format of the start date is according to D FORM in SYSTEM DATE TIME Section 7 5 2 The format of the start time is 24 hour format 23810 41 0 08 54 19 09 04 03 dic 2 EERTE ArI A A Figure 25 Data Print The lt gt buttons are used to change the parameters Press the Enter button to save the new setting Press the Exit button to cancel any changes and exit to the menu 7 3 1 4 Data Storage The DATA STORAG
150. r selectable up to 0 01 0 1 recorded Inputs Two sensors each measuring temperature and relative humidity each is de tachable cable extendable and interchangeable with self contained calibra tion each may be assigned a unique 16 character identification Display 240 x 128 graphics monochrome LCD displays temperature and humidity data graphically numerically and statistically 16 pre defined user changeable screen set ups are included Memory 400 000 typical individual time stamped readings Alarms Visual and audio alarms for temperature temperature rate RH RH rate and fault conditions Alarm port output 0 V normal 11 to 12 V active sources up to 20mA 2 5mm two conductor sub miniature plug Communications RS 232 Ethernet LAN 802 15 4 ZigBee wireless optional Ethernet 10 Base T 100 Base TX IP TCP DHCP Ping HTTP HTML Wireless Range 30 m 100 ft typical unobstructed Enclosure The DewK may be wall mounted hardware included or set on a benchtop Power 12 V DC from external 100 240 V AC power supply Battery Backup Standard 9V battery to allow continued measuring during power disruptions Operating Range 0 C to 50 C 1620A DewK Thermo hygrometer User s Guide Size DewK HxWxD 125 x 211 x 51 mm 4 9 x 8 3 x 2 0 in Size Probes 79mmHx 19 mm dia 3 1 x 0 75 in Weight 0 7 kg 1 5 lb 3 2 Environmental Conditions Although the instru
151. rameter is optional If it is not given or if it is 1 a new self test is performed and the results returned the self test can take several seconds to complete If the parameter is 0 the results of the power on self test are re ported Ten results are reported in comma separated numbers between 0 and 65535 0 indicates no error or abnormal condition Non zero numbers when converted to binary values give specific information on the type of error de pending on which bits are set The meaning of the results are as follows lst number sensor status 0 sensors are attached and operating properly 123 1620A DewK Thermo hygrometer User s Guide bit O is 1 channel 1 sensor is unattached locked out or not operating properly bit 1 is 1 channel 2 sensor is unattached locked out or not operating properly 2nd number channel sensor test 0 no error bit 0 is 1 sensor unattached bit 1 is 1 sensor memory read failure bit 2 is 1 sensor parameter checksum error bit 3 is 1 sensor calibration parameters out of range bit 4 is 1 sensor calibration date is invalid bit 5 is 1 sensor identification is invalid bit 6 is 1 sensor version number is incompatible bit 7 is 1 sensor is locked out 3rd number channel 2 sensor test see channel 1 sensor test 4th number sensor calibration expired 0 sensor calibration has not yet expired bit 0 is 1 channel 1 sensor calibration has expired bit 1 is 1 channel 2 sensor calibrati
152. re 1 or humidity 2 CALibrate lt chn gt PARameter OFFSet lt num gt lt float gt Sets the sensor calibration offset parameter for the specified channel Example CAL1 PAR OFFS2 0 025 The CALibrate suffix lt chn gt specifies the channel 1 or 2 The OFFSet suf fix lt num gt specifies either temperature 1 or humidity 2 The lt float gt pa rameter specifies the value for the offset parameter This command is password protected see Section 8 2 10 Password Commands CALibrate lt chn gt PARameter SCALe lt num gt Returns the sensor calibration scale parameter for the specified channel Example CAL2 PAR SCAL1 Response 0 564 The CALibrate suffix lt chn gt specifies the channel 1 or 2 The SCALe suffix lt num gt specifies either temperature 1 or humidity 2 107 1620A DewK Thermo hygrometer User s Guide 8 2 6 11 CALibrate lt chn gt PARameter SCALe lt num gt lt float gt Sets the sensor calibration scale parameter for the specified channel Example CAL2 PAR SCAL1 0 002 The CALibrate suffix lt chn gt specifies the channel 1 or 2 The SCALe suffix lt num gt specifies either temperature 1 or humidity 2 The lt float gt parameter specifies the value for the scale parameter This command is password pro tected see Section 8 2 10 Password Commands 8 2 7 System Commands The system commands are used for querying instrument identification parame ters temperature units an
153. re and Humidity Adjustments Adjustments to the 2626 x calibration parameters are required when measure ment errors are excessive or outside of the specification The calibration pa rameters can be accessed using the SENSOR CAL function in the CHANNEL menu The password is required to change the parameters Calculation of new calibration parameters requires that the measurement errors first be obtained according to the procedure above in section Temperature and Humidity Mea surement Errors After the Temperature and Humidity Adjustments proce dure is completed perform the Temperature and Humidity Measurement Errors procedure again to verify the calibration I Calculate the adjustment ATSL to the temperature slope parameter TSL and the new temperature slope parameter x Terror T3 Terror T1 T3 T1 ATSL 10 C TSL TSL ATSL Calculate the slope adjusted temperature errors Terror Iny Terror Tn ATSL x Oe Calculate the median slope adjusted temperature error the adjustment ATOS to the temperature offset parameter TOS and the new temperature offset parameter _ Terror T3Y Terror T 2 2 Tmedian ATOS Tmedian TOS TOS ATOS Calculate the adjustment AHSL to the humidity slope parameter HSL and the new humidity slope parameter 135 1620A DewK Thermo hygrometer User s Guide 136 RHerror RH3 RHerror RHD RH3 RHI AHSL 25 x HSL HSL
154. received on the serial port are echoed back over the serial port Echo mode ON is useful when using terminal emula tion software on a computer to communicate with the instrument Selecting OFF disables echoing Echo mode OFF is commonly used when using control software on the computer The SER PER parameter allows the user to select the interval at which mea surements are automatically transmitted over the serial port The user may choose between 1 2 5 10 15 and 30 seconds 1 2 5 10 15 20 and 30 min utes and 1 hour The PRINT parameter allows the user to enable automatic printing of measure ments over the serial port Selecting ON enables printing and selecting OFF disables printing Press the gt buttons to change a parameter setting Use the AW buttons to move between parameters Press the Enter button to save the new setting Press the Exit button to cancel any changes and exit to the menu 61 1620A DewK Thermo hygrometer User s Guide 62 7 5 3 2 RF optional The RF wireless interface allows the instrument to receive and respond to com mands from a remote computer through a radio frequency wireless link See Section 8 for a list of commands The computer must be attached to an RS 232 or USB RF modem See Section 5 8 Accessories for more information These accessories can be purchased separately In the case of a USB RF modem USB driver software supplied with the modem maps the wireless link to a vi
155. resent call your Hart Scientific Authorized Service Center See Section 1 3 Use Proper Care First and most important is to understand the safety issues related to the thermo hygrometer Carefully read Section 1 2 Safety Information The thermo hygrometer and sensors used with it are sensitive instruments that can be easily damaged Always handle these devices with care DO NOT allow them to be dropped struck stressed or over heated Learn About the Features and Components Familiarize yourself with the features and accessories of the thermo hygrome ter by reading Section 5 Parts and Controls Install the Battery To maintain uninterrupted measurement when power outages occur you must install the included battery into the rear battery compartment A standard 9V al kaline battery NEDA 1604A or IEC 6LR61 is recommended With a fresh al kaline battery installed the thermo hygrometer will continue to measure and record temperature and relative humidity during a power outage for up to 16 11 1620A DewK Thermo hygrometer User s Guide 4 5 4 6 4 7 4 8 hours typically However without external power the display will be inoperable Connect the Sensor The sensor for channel connects to the socket at the top right and the sensor for channel 2 if used connects to the socket on the right side Either sensor may be used with an optional extension cable up to 100 feet 30 meters in length Connect th
156. resolution 31 response time 23 S safety information 2 self heating 22 self test 20 139 sensor 12 14 18 20 22 53 sensor accuracy 22 sensor calibration 29 133 sensor identification 27 28 34 148 sensor lock 28 serial number 34 service centers 3 specifications 9 stabilization 23 stand 16 statistics 34 46 47 storage capacity 41 44 switch 20 system information 67 T temperature unit 31 56 time 32 34 57 troubleshooting 139 141 143 145 U unit of temperature 21 31 56 V version 67 W warnings 2 Z zones display 32
157. returns the minimum maximum or default value respectively ALARm TEMPurature lt chn gt UPPer LIMit lt float gt IMINIMAXIDEF Sets the upper temperature alarm limit for the specified channel in degrees C or F Example ALAR TEMP1 UPP LIM 26 00 The TEMPerature suffix lt chn gt specifies the channel 1 or 2 The lt float gt pa rameter specifies the value for the upper temperature alarm limit The lt float gt value is always in the current temperature units C or F Specifying the MIN MAX or DEF parameter sets the upper temperature alarm limit to the mini mum maximum or default value respectively This command may be pass word protected see Section 8 2 10 Password Commands ALARm TIME FIRSt Returns the time of the first alarm event Example ALAR TIME FIRS Response 15 43 13 The response is returned in the format lt hour gt lt minute gt lt second gt ALARm TIME LAST Returns the time of the last alarm event Example ALAR TIME LAST Response 15 43 19 The response is returned in the format lt hour gt lt minute gt lt second gt 91 1620A DewK Thermo hygrometer User s Guide 92 8 2 2 8 2 2 1 8 2 2 2 8 2 2 3 8 2 2 4 8 2 2 5 Measurement Commands The measurement commands are used to read information on the statistical cal culations and for reading the most recent measurement for a specified channel CALCulate AVERage CLEar Resets all running statistics for both ch
158. rs that al ter the natural self heating can cause errors in the measurement Self heating does depend somewhat on the velocity of the air around the sensor The sensor is calibrated in nearly still air Different air velocities can cause dif ferences in the measured temperature of the sensor as much as 0 06 C for ve locities ranging from 0 to 10 cm s High velocities can cause even greater errors that can be as large as 0 15 C below the temperature measured at low veloci 6 General Operation Sensors ties Thus it is recommended that the sensor be located where there is minimal air currents The self heating of the sensor could also be altered by nearby objects that insu late the sensor from the air Keep adequate air space around the sensor The self heating of the sensor takes a few minutes to stabilize after the power to the thermo hygrometer is switched on or the sensor is attached For best results allow 15 minutes for the sensor to settle after applying power The sensor takes some time to respond to large changes in temperature or hu midity such as for instance when the sensor is brought from a cold or humid location to a warm or dry one Depending on the difference the sensor can take several minutes to more than an hour to reach full accuracy after conditions have changed Finally moisture condensing within the sensor can cause erroneous or invalid measurements Condensation can occur if the sensor is brought from
159. rt 802 15 4 ZigBee wire less optional and Ethernet LAN port To edit the settings for a specific port it must first be selected The selections are SERIAL RF LAN and ERRORS The ERRORS setting allows the user to view any error messages stored in the error queue Once an error has been viewed it is removed from the error queue 21 900 29 1 22 06 49 09 04 2003 Figure 42 Comm Setting The P buttons are used to change the parameter setting Press the Enter button to save the new setting Press the Exit button to cancel any changes and exit to the menu Serial The serial port can be used to receive and respond to commands from a remote 7 Menu Functions System Menu computer attached through a serial RS 232 cable See Section 8 for more in formation and for a list of commands Figure 43 Serial The BAUD parameter allows the user to select the baud rate for communica tions on this port The user may choose between 1200 2400 4800 9600 19200 38400 and 57600 The default baud rate is 9600 The LF parameter allows the user to specify whether a linefeed character ASCII 0A hex or 10 decimal is appended to the end of each line transmitted over the serial port Selecting ON sends both a carriage return ASCII 0A hex or 13 decimal and a linefeed Selecting OFF sends only a carriage return The ECHO parameter allows the user to set the echo duplex mode Selecting ON enables echoing so that all characters
160. rtual COM port on the computer Proper communication between the instrument and a computer s RF modem requires that both be set with matched settings as explained below 2 A 1 oC RF SETTINGS Sl dde A E 26 7 Aloe ch I Shc Figure 44 RF Settings Figure 40 RF Settings MG_1420 Selecting RF for the PORT option in the COMM SETTING menu function presents a window containing the RF device settings which include ENABLE CHANNEL PAN ID INST and MODEM There might be a delay of several seconds as information is retrieved from the RF transceiver The RF port option is only available if the wireless option has been purchased and is installed The unique serial number SER NUMB of the internal 802 15 4 wireless trans ceiver and the signal strength SIGNAL of the most recently received RF sig nal are displayed near the top of the window For SIGNAL the more negative the value the weaker the RF signal For reliable communication the received signal strength should be no weaker than 90 dB Likewise the signal received by the remote modem from the instrument should be no less than 90 dB ENABLE when ON switches on the RF transceiver When RF is enabled the LAN port will be disabled 7 Menu Functions System Menu 7 5 3 3 CHANNEL selects the frequency channel on which the RF transceiver oper ates For two devices to communicate they must use the same channel Make sure the CHANNEL setting is set to the same numbe
161. s a relative humidity reference and a stable temperature environment 0 37 RH uncertainty or better is rec ommended e PRT and associated readout to use as the reference thermometer 0 03 C uncertainty or better is recommended e 1620A Thermo Hygrometer to use to read the 2626 x sensor e An extension cable to connect with the 2626 x sensor placed inside the temperature humidity chamber Preparation Allow the 2626 x sensor to dry out in air with relative humidity between 20 and 50 and temperature between 16 and 30 C for 24 hours before calibration Place the 2626 x sensor inside the temperature humidity chamber near the cen ter attached to an extension cable that runs to the 1620A outside the chamber Place the PRT inside the chamber with the tip close to the tip of the 2626 x sen sor Run the probe cable to the outside of the chamber and connect it to the PRT readout Calibration Points Each measurement parameter both temperature and relative humidity is cali brated at three points throughout its range with the other parameter held con stant at the center of its range The following tables list the calibration points for the two sensor models and for both measurement parameters 133 1620A DewK Thermo hygrometer User s Guide 9 4 134 2626 S Temperature Calibration Points Temperature at Relative Humidity 15 C 45 25 C 45 35 C 45 2626 S Relative Humidity Calibration Points
162. s are used to move between parameters Press the Enter button after all of the pa 30 7 Menu Functions Display Menu 7 2 7 2 1 rameters have been edited The message STORE VALUES is displayed Press the Enter button to save the new settings The values are stored in the sensor Press the Exit button to cancel any changes and exit to the menu Display Menu The DISPLAY menu provides functions for configuring the display The func tions that appear in this menu are DISPLAY SETTING DISPLAY LAYOUT FIELD DATA GRAPH SCALE and DISPLAY RESET TARTA mowe to item RH ATER 40 4 ever i ter EXIT 08 48 19 fete 03 04 03 A pede 1s f A rece eles ore Leva Movil e alee UD a Figure 13 Display Menu Display Setting The DISPLAY SETTING function allows you to select the temperature display resolution T RES humidity display resolution H RES decimal preference unit of temperature and display contrast These settings may be password pro tected see Section 7 5 4 Password The temperature and humidity display resolutions are selectable between 0 0 1 0 01 and 0 001 These settings do not affect the resolution of recorded or printed data Recorded and printed data are fixed at 0 01 C or F and 0 1 RH The decimal preference is selectable between a period and a comma The available units of measure are degrees C and degrees F The contrast can be adjusted here using the 4 buttons
163. s treti neta OER EE 139 11 1 5 Self Test Error Messages lt o sacs rocosa A e OS 140 11 1 6 Start up Error Messages su c duis Ke Soa ara Ga a 140 11 1 7 Error Messages during Normal Operation 04 141 11 2 Downloading Recorded Data o 141 11 3 CE Comments 4 265 eh eee es eee ee eee was 142 11 3 1 EME Directive cuisine dert gabe A be Ee eek ws 142 11 3 1 1 Immunity Teste e ee seca ee e ee kes Bid Bae ee aoe 8 142 11 3 1 2 Emission Testing ia ai ace ae eve bo a Sear ea ahs an de 143 11 3 2 Low Voltage Directive Safety o 0 oo e 143 11 3 3 RF Certification es oo ead od be week ek awe deco dd e 143 113 91 United States iii a OR Rs a eR ew BORO de 143 11332 Canada oes ss oak eee ea ane e Suite ead Boe Agee E Gas a A 144 11 33 3 EnO sos aces osha ewe Se Ser ego ceased Sar ee Ses eee aoe 144 11 4 Frequently Asked Questions 4 144 vii viii Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 Figure 21 Figure 22 Figure 23 Figure 24 Figure 25 Figure 26 Figure 27 Figure 28 Figure 29 Figure 30 Figure 31 Figure 32 Figure 33 Figure 34 Figure 35 Figure 36 Figure 37 Figure 38 Figure 39 Figure 40 Front Panelo g g a aan a od a 13 Top Panels 2 2 00 6 meii e a e a e OER EE
164. save the new settings Press the Exit button to cancel any changes and exit to the menu 7 Menu Functions Display Menu The enabled layouts can be viewed by pressing the 4 buttons when the main screen is displayed A ir at A Figure 15 Display Layout Except for blank and time types zones require that a sensor number be se lected Data for the specified sensor number is displayed in the zone The op tions for the zone type and descriptions for each follow Blank No data is displayed TIME The current time and date are displayed STATS Various statistical values are displayed numerically for the given sen sor Statistical values to display can be selected using the FIELD DATA menu function Section 7 2 3 T H Temperature and humidity are displayed numerically for the given sensor T GRAPH Temperature history is displayed on a graph for the given sensor The temperature vertical scale time horizontal scale and number of grid di visions can be set for the zone using the GRAPH SCALE menu function Sec tion 7 2 4 H GRAPH Relative humidity history is displayed on a graph for the given sensor The relative humidity vertical scale time horizontal scale and num ber of grid divisions can be set for the zone using the GRAPH SCALE menu function Section 7 2 4 Graphs include time tick marks that occur at hourly intervals for time scales 24 hours or less or at daily intervals for time scales greater than 1 da
165. sensor ID 64 Invalid sensor serial number N Oo oO fF WO YO O a 128 Sensor lock is enabled and the wrong sensor is connected TRIGger TlMer MINIMAXIDEF Returns the measurement period setting in seconds Example TRIG TIM Response 1 Specifying the MIN MAX or DEF parameter returns the minimum maxi mum or default value respectively TRIGger TIMer lt num gt MINIMAXIDEF Sets the measurement period setting in seconds Example TRIG TIM 30 The lt num gt parameter can be one of the following values 1 2 5 10 15 30 60 120 300 600 900 1200 1800 or 3600 If a value other than one listed here is used the instrument automatically selects the nearest acceptable value that is less than the value entered Values greater than 3600 or less than are ignored and cause a 222 Data out of range error Specifying the MIN MAX or DEF parameter sets the measurement interval timer to the minimum maximum or default value respectively The RST command sets the measure 8 Digital Communications Interface Commands 8 2 5 8 2 5 1 8 2 5 2 8 2 5 3 8 2 5 4 8 2 6 ment period to 2 seconds This command may be password protected see Sec tion 8 2 10 Password Commands Channel Commands The channel commands are used for switching channels on and off ROUTe CLOSe lt chn gt Returns the state of the specified channel Example ROUT CLOS 1 Response 0 The lt chn gt parameter specifies t
166. sets for the specified channel Section 8 2 6 9 temperature or humidity CALibrate lt chn gt PARameter SCALe lt num gt Returns the sensor calibration scale for the specified channel temperature or humidity Section 8 2 6 10 CALibrate lt chn gt PARameter SCALe lt num gt lt float gt Sets the sensor calibration scale for the specified channel tem perature or humidity Section 8 2 6 11 CALCulate AVERage CLEar Resets all running statistics Section 8 2 2 1 CALCulate lt chn gt DEWPoint Returns the dew point measurement for the specified channel Section 8 2 2 2 CALCulate lt chn gt HINDex Returns the heat index measurement for the specified channel Section 8 2 2 3 CALCulate lt chn gt PARame Returns a running statistic for the specified channel Section8 2 2 4 ter lt num gt AVERerage lt num gt CALCulate lt chn gt PARameter lt num gt Resets all running statistics Section 8 2 2 5 AVERerage lt num gt CLEar CALCulate lt chn gt PARameter lt num gt Returns a running statistic for the specified channel Section 8 2 2 6 AVERerage lt num gt DATA CALCulate lt chn gt PARameter lt num gt Returns statistical type for the specified channel temperature Section 8 2 2 7 AVERerage lt num gt TYPE humidity type CALCulate lt chn gt PARameter lt num gt RATE Returns rate calculation for the specified channel Section 8 2 2 8 CALCulate lt chn gt PARame Returns the rate time span Section
167. sor at tached The sensor ID is stored in the sensor not in the thermo hygrometer 2369C Rene Th 40 5 Re TACTO LE ae AT mmi nn fate nn ii Cuad Pr a a 08 46 01 09 04 03 amiin Figure 9 Sensor ID PETTE LEETE RES OEE a e rre ar SES Use the lt 4 gt and ENTER buttons to select the sensor identification to change The 4 p buttons are used to move among character positions and the AW buttons are used to change the character Letters numeric digits space and un derscore can be used Press the Enter button to save the setting Press the Exit button to cancel any changes and exit to the menu Sensor Lock The SENSOR LOCK function locks each sensor individually and prohibits the user from switching sensors on the locked channels This may be pass word protected see Section 7 5 4 PASSWORD The sensor lock is set to ON or OFF After selecting ON a screen is displayed showing the sensor channel number serial number and the message NOW LOCKED When the sensor lock is ON the thermo hygrometer measures only on that channel using the sensor that was attached when sensor lock was set ON This can be used to pre vent inadvertent attachment of an uncalibrated sensor or one that is not in the 7 Menu Functions Channel Menu 7 1 4 desired location It uses the sensor serial number to identify the sensor To ex change a different sensor the sensor lock must be set to OFF Figure 10 Sensor Lock
168. stionable Status Event Register is described in Section 8 2 11 21 STA Tus QUEStionable The following example causes the Questionable Status Bit in the Status Byte Register to be set when a measurement is invalid Example STAT QUES ENAB 16 Response 16 Date and Time Formats The following tables list the acceptable date and time formats and their number setting Date Formats Number Format 0 MM DD YY 1 MM DD YYYY 2 DD MM YY 3 DD MM YYYY Time Formats Number Format 0 H MM SSAM PM 12 hour format 1 HH MM SS 24 hour format 131 9 Calibration Procedure Equipment 9 1 9 2 9 3 Calibration Procedure 2626 x sensors used with the thermo hygrometer should be periodically cali brated to ensure accuracy A six month calibration interval for the first year and one year thereafter is recommended The thermo hygrometer display unit does not require calibration and the sensor can be sent to a qualified service center for calibration without the thermo hygrometer display unit Contact a Hart Scientific Authorized Service Center for return instructions prior to return ing the probe for calibration Ensure that the probe is packaged adequately to ensure safe transport It is recommended that you acquire and use the optional probe case for transport For those who wish to perform their own calibration the calibration procedure 1s outlined as follows Equipment e Temperature humidity chamber to use a
169. t is displayed Alarms for sensor low high or rate limits are indicated with the most extreme measurement and the alarm limit setting The times and dates of the earliest 7 Menu Functions System Menu 7 5 and latest alarm events are shown below the list of alarm events space permit ting li ER H Fe 5 L k HH K 04 10 2003 04 10 2003 Ta 1 T H H Tm LNAI Figure 38 Alarm View Press the Enter button to clear the alarms Press the Exit button to retain any alarms and exit to the menu System Menu The SYSTEM menu provides access to the general settings for the system such as temperature unit date and time the communication port settings password settings and viewing the system information The functions that appear in this 55 1620A DewK Thermo hygrometer User s Guide menu are SYSTEM SETTING DATE TIME COMM SETTING PASS WORD and SYSTEM INFO T 21 89 C i item RH cy 1 29 2 eee item EXIT 22 06 20 un 09 04 2003 Figure 39 System Menu a gain 43 E PA ly 5 I The AY buttons are used to select the menu option The dl gt buttons are used to change the parameter settings Press the Enter button to save the new setting Press the Exit button to cancel any changes and exit to the menu 7 5 1 System Setting The SYSTEM SETTING function allows you to change the temperature mea surement unit The UNIT parameter switches b
170. t leaks or becomes dam aged Never allow the battery to be shorted heated punctured or dropped If the instrument is physically damaged immediately remove the battery to insure that it does not become shorted While removed from the instrument store the battery in a location so that it will not come into contact with metal or fluids that might short circuit the battery and where it is safe from excessive temperatures Used batteries must be disposed of properly Check your local regulations for additional information Never dispose of batteries in fire which may result in explosion with the possibility of personal injury or property dam age A Cautions If the instrument is dropped struck or handled in a way that causes inter nal or external physical damage immediately unplug the AC adapter re move the battery discontinue use and contact an Authorized Service Center Do not attempt to disassemble or repair the instrument battery or AC adapter Refer repairs or replacement components to an Authorized Service Center The instrument and sensors are sensitive and can be easily damaged Al ways handle these devices with care DO NOT allow them to be dropped struck stressed or overheated Sensors are fragile devices which can be damaged by mechanical shock overheating and exposure to fluids Damage may not be visibly apparent but can cause drift instability and loss of accuracy Observe the following precautions DO NOT a
171. t num gt IMINIMAXIDEF Sets the Standard Event Status Enable register Section 8 2 11 3 ESR Returns the Standard Event Status register Section 8 2 11 4 IDN Returns the instrument identification string that indicates the Section 8 2 7 1 manufacturer model number serial number and firmware version OPT Returns configuration options Section 8 2 7 2 RST Sets the instrument operating parameters to defined conditions Section 8 2 7 3 SRE Returns the Service Request Enable register Section 8 2 11 5 SRE lt num gt IMINIMAXIDEF Sets the Service Request Enable register Section 8 2 11 6 STB Returns the Status Byte register Section 8 2 11 7 TST lt bool gt Returns the self test results 0 startup test 1 new test Section 8 2 11 8 ALARm BATTery Returns the battery alarm event Section 8 2 1 1 ALARm BATTery ENABle Returns the state of the battery alarm enable Section 8 2 1 2 ALARm BATTery ENABle lt bool gt Enables or disables the battery alarm Section 8 2 1 3 ALARm BEEP ENABle Returns the state of the alarm beep enable Section 8 2 1 4 ALARm BEEP ENABle lt bool gt Enables or disables the alarm beep Section 8 2 1 5 ALARm CLEar Clears the alarm events Section 8 2 1 6 ALARm DATE FIRST Returns the date of the first alarm event Section 8 2 1 7 ALARm DATE LAST Returns the date of the latest alarm event Section 8 2 1 8 ALARm DISPlay ENABle Re
172. t to the menu Sensor Alarm The SENSOR ALARM function enables various sensor related alarms For en abled sensor alarm events to be indicated an indicator must be enabled with ALARM SETTING as described above 7 Menu Functions Alarm Menu 7 4 3 To set alarm parameters a channel number and measurement type T or H must first be selected using lt gt and ENTER buttons gt 1 87C 29 3 22 05 20 09 04 2003 Figure 36 Sensor Alarm pi pug A rif 3 Cif Dr The PARAM parameter is selectable between 1 T 1 H 2 T 2 H The 1 and 2 refer to the channel selected T is temperature and H is humidity The A F buttons are used to select the menu option The lt gt buttons are used to change the parameter setting Press the Enter button to save the new setting Press the Exit button to cancel any changes and exit to the menu Once an option is selected the parameters LOWER L ENAB UPPER U ENAB RATE R ENAB and SENSOR for the given channel 1 or 2 and mea surement type T or H are displayed The LOWER parameter is the lower limit alarm The L ENAB parameter is used to turn the lower limit alarm ON or OFF The UPPER parameter is the upper limit alarm The U ENAB parameter is used to turn the upper limit alarm ON or OFF The RATE parameter is the upper limit of the absolute value of the rate of change expressed in degrees hour or RH hour The R ENAB parameter is used to turn the rate alarm ON or OFF The SENSOR
173. tact with any fluids Sensor Accuracy To achieve full accuracy with the thermo hygrometer sensors a few precau tions should be noted First consider that the sensor actually measures its own temperature not neces sarily the temperature of the air around it Ideally the sensor s temperature will be the same as the air but they might be different under less than ideal conditions One such condition is when there is a source of radiated heat that is seen by the sensor Radiated heat tends to heat up the sensor higher than the air around 1t try shining a flashlight on the sensor from some distance away Some sources of radiated heat to avoid are incandescent lamps space heaters and other high temperature devices If such objects cannot be eliminated consider using a heat shield between the heat source and the thermo hygrometer sensor The sensor can also be heated by warm objects close by perhaps a wall that is slightly warmer than the air in the room or even another sensor placed next to 1t For best results allow adequate distance between the sensor and any objects that might be at a different temperature than the air Other considerations relate to the self heating of the sensor Since the sensor contains electronic circuits that release a small amount of heat the sensor will naturally be slightly warmer than the air around it The calibration of the sensor takes this self heating into account and compensates for it But facto
174. the measurements are used to calculate the rate of change and is selectable between 30 seconds 1 2 5 10 15 20 30 45 minutes or 1 hour The temperature rate is displayed in the RATE T field of a STATS display zone The humidity rate is displayed in the RATE H field of a STATS display zone See Section 7 2 3 If RATE Tis 5 minutes or less the rate of change is calculated as the average rate of change using all the measurements obtained during the past RATE T time If RATE T is greater than 5 minutes the rate of change is calculated using the most recent measurement and the measurement obtained RATE T time ago If there are as yet insufficient measurements to calculate the rate of change only dots are dis played in the RATE T or RATE H field y 23 68 Ci crt JE SETTING 40 4 ea on 08 45 32 09 04 03 Figure 8 Channel Setting Use the A F buttons to select the setting to change The lt buttons are used to change the setting parameters Press the Enter button to save the new set ting Press the Exit button to cancel any changes and exit to the menu Sensor ID The SENSOR ID function allows each sensor to be uniquely identified This may be password protected to prevent it from being changed see Section 7 5 4 PASSWORD The model number and serial number are displayed here but 27 1620A DewK Thermo hygrometer User s Guide 28 cannot be edited The sensor ID cannot be set for a channel without a sen
175. the statistics are recorded after the last mea surement of the day AUT RES enables ON or disables OFF automatic reset of the statistics and may be set from 00 00 to 23 00 RES TIM sets the hour when the statistics are automatically reset if AUT RES is ON If RES TIM is 00 00 the statistics are reset just prior to the first measurement of the day For example to automatically store statistics for each day for measurements made in a laboratory only between 8 00 in the morning and 5 00 17 00 in the afternoon set the AUT REC to ON REC TIM to 17 00 AUT RES to ON and RES TIM to 08 00 Note that statistics can also be manually reset using the STATS RESET function see Section 7 3 2 4 DO NOT manually reset the sta tistics if automatic recording is desired The DAILY STATS settings and STATS RESET can be password protected to prevent inadvertent resetting of the statistics see Section 7 5 4 Password DAILY STATS cannot be manually stored T 23 8 1 C 4072 08 55 20 09 04 03 A EN A A A A A A A Al tats Setting ih TATE AI AUT Figure 29 Si The Y buttons are used to change the setting parameters Press the Enter button to save the new setting Press the Exit button to cancel any changes and to exit to the menu 47 1620A DewK Thermo hygrometer User s Guide 48 7 3 2 2 Stats View The STATS VIEW function is used to view daily statistics Select a date and measurement channel and type
176. the various features of the thermo hygrometer are described below Front Panel The front panel buttons Enter Menu Up Down Left Right Arrows and Exit are used to select and alter the functions of the thermo hygrometer see Figure 1 1620A DEWK THERN Hart Scientific Figure 1 Front Panel The buttons have different functions depending on whether the main screen or the menu system is displayed The functions of each of the buttons from the main screen are as follows Enter Menu This button is used to display the menu options Exit This button is used to display the alarm window With the alarm window displayed the Exit button can be used to return to the main screen while pre serving the alarm events or the Enter button can be used to clear the alarm events and return to the main screen 4 These buttons are used to move among enabled display layouts AV These buttons are used to adjust the display contrast A for darker and Y for lighter The functions of each of the buttons within the menu system are as follows 13 1620A DewK Thermo hygrometer User s Guide 14 5 2 5 3 Enter Menu This button is used to select a menu item to accept a choice or save changes to a parameter Exit This button is used to return from a menu or window or cancel changes to a parameter Pressing the Exit button for a second or so returns from most any menu menu function or window back to the main screen
177. ton to display the data for the selected starting date and time Use the A F buttons to scroll through the data you can go back two screens and the lt b gt buttons to scroll among data blocks Press the Exit but ton to cancel any changes and exit to the menu The graphic mode displays the data in a graphic format The CHAN parameter allows you to select the channel from which to view the data T CENT sets the center of the vertical axis for temperature T SCAL sets the scale H CENT sets the center of the vertical axes for humidity H SCAL sets the scale The TIME parameter is the length of data to display and may be set to 1 4 10 or 24 hours 2 5 7 15 or 30 days The DIVS parameter is the number of divisions for the graph and may be set to 1 2 4 6 8 or 10 The BEGIN parameter sets the start date and the start time The format of the start date is according to the D FORM in the SYSTEM DATE TIME menu see Section 7 5 2 Date Time The format of the start time is 24 hour format Press the Enter button to display the data for the selected starting date and time in graphical format Press the Exit button to cancel any changes and exit to the menu Every recorded measurement within the time span of a graph appears as a dot at the appropriate time location If the time scale is small and the recording in terval is large dots will be separated Graphs include time tick marks that occur at hourly intervals for time scales 24 hours o
178. tted lt gt indicates a required parameter indicates an optional parameter indicates a group of parameters that must be used together T indicates alternate parameter values lt str gt indicates a string of ASCII characters is required lt chn gt indicates a channel number is required lt num gt indicates an integer value is required lt bool gt indicates a boolean value 0 or 1 is required The mnemonics OFF and ON are also accepted for 0 and 1 respectively lt unit gt indicates a temperature unit C or F is required lt float gt indicates a floating point value is required lt pass gt indicates a four digit numeric password is required lt year gt indicates a four digit number for the year is required lt month gt indicates a one or two digit number for the month is required lt day gt indicates a one or two digit number for the day is required lt hour gt indicates a one or two digit number for the hour 0 to 23 is re quired lt minute gt indicates a one or two digit number for the minute is required lt second gt indicates a one or two digit number for the second is required lt baud gt indicates a valid baud rate setting is required lt addr gt indicates an IP address is required For query commands specifying the MIN MAX or DEF parameter causes the instrument to respond with the minimum maximum or default setting respectively For set commands specifying the MIN MAX o
179. turns the state of the alarm display enable Section 8 2 1 9 ALARm DISPlay ENABle lt bool gt Enables or disables the alarm display Section 8 2 1 10 ALARm PORT Returns the alarm port state Section 8 2 1 11 ALARm PORT lt bool gt Sets the alarm port state Section 8 2 1 12 ALARm PORT ENABle Returns the alarm port enable setting Section 8 2 1 13 ALARm PORT ENABle lt bool gt Sets the alarm port enable setting Section 8 2 1 14 ALARm POWer Returns the power loss alarm event Section 8 2 1 15 ALARm POWer ENABle Returns the state of the power loss alarm enable Section 8 2 1 16 ALARm POWer ENABle lt bool gt Enables or disables the power loss alarm Section 8 2 1 17 ALARm RHUMidity lt chn gt LOW Returns the state of the low humidity alarm for the specified channel Section 8 2 1 18 ALARm RHUMidity lt chn gt LOW ENABle Returns the state of the low humidity alarm enable for the speci fied channel Section 8 2 1 19 ALARm RHUMidity lt chn gt LOW ENABle lt bool gt Enables or disables the low humidity alarm enable for the speci fied channel Section 8 2 1 20 ALARm RHUMidity lt chn gt RATE Returns the state of the humidity rate alarm for the specified channel Section 8 2 1 23 ALARm RHUMidity lt chn gt RATE ENABle Returns the state of the humidity rate alarm enable for the speci fied channel Section 8 2 1 24
180. umidity delta difference from the other channel DEWP dew point see ALT parameter in Section 7 1 1 Channel Setting HEAT heat index apparent temperature as felt by humans REC CH recording channel measurement type enable status BATT battery level MEAS seconds to next measurement separating line 35 1620A DewK Thermo hygrometer User s Guide 36 7 2 4 A a en Figure 16 Field Data Use the lt buttons to change each of the settings Press Enter to save and continue to the next parameter Press the Exit button to cancel any changes and exit to the menu Graph Scale The GRAPH SCALE function allows the selection of the graph settings for each zone 1 2 3 or 4 Graph settings for each zone are used in common among all display layouts This may be password protected see Section 7 5 4 Password For each zone you may set the center of the vertical axes for the temperature graphs T CENT the temperature scale for the axes T SCAL the center of the vertical axes for the humidity graphs H CENT the humidity scale for the axes H SCAL the time axis scale TIME and the number of grid divisions for the graph DIVS Following is the range for each setting T CENT from 100 000 to 40 000 T SCAL from 100 000 to 0 100 H CENT from 100 000 to 0 000 H SCAL from 100 000 to 1 000 TIME from 1 4 10 24 hours and 2 5 7 15 30 days 7 Menu Functions Display Menu DIVS from 1 2
181. urns the continuous state which is always 1 Example INIT CONT Response 1 SENSor AVERage Returns the measurement average setting Example SENS AVER Response 1 A value of 1 is returned if the measurement averaging is enabled A value of 0 is returned if the measurement averaging is disabled SENSor AVERage lt bool gt Sets the measurement average setting Example SENS AVER 1 8 Digital Communications Interface Commands 8 2 4 5 8 2 4 6 8 2 4 7 8 2 4 8 The lt bool gt parameter turns the measurement averaging on 1 or ON or off 0 or OFF This command may be password protected see Section 8 2 10 Pass word Commands SENSor lt chn gt LOCK Returns the sensor lock state for the given channel number Example SENS1 LOCK Response 1 A value of 1 is returned if the sensor lock is enabled A value of 0 is returned if the sensor lock is disabled SENSor lt chn gt LOCK lt bool gt Sets the sensor lock for the specified channel Example SENS1 LOCK 1 The lt bool gt parameter turns the sensor lock on 1 or ON or off 0 or OFF This command is password protected To access this command when the SYST PASS SENS is enabled the password must be successfully entered using the SYST PASS CEN lt pass gt command see Section 8 2 10 Password Commands SENSor lt chn gt IDENtification Returns the sensor identification for the specified channel Example SENS1 IDEN Response LABORATORY
182. vad A SH 21 Measuring 3 baw eh tee eae eh Eee eas 21 Unitof Temperature so ik sk e a a eee 21 Recording Measurements 2 e e 21 SENSIS Sek we Ve SOM OS ek Be AE ew RA 21 6 12 1 Sensor Accuracy sy hace o Gp eR dop ee a a ae we Fw E 22 7 Menu Functions 25 7 1 72 73 7 4 7 5 Channel Memoirs o a 26 7 1 1 Channel Setting ss aa a we ada a ra a A A 26 7 1 2 Sensor ID s o ri 6 da a ae ee a a a ae ae 27 TAS Sensor Lok ou a a hla eee a a be ww Re te a a ad 28 7 1 4 Sensor Cal ara ah ad ad a dabas a ada 29 Display Menu o sr aare kp pe ae a ci a 31 7 2 1 Display Sethe tt AS rs ea a we eS 31 T22 Display Layout 4 0000 0 0 aos a dae Se ae Rae SH Gs ale aw 32 723 Held Datas s 3 a goed ds kh ay Nowy ns tes amp GE ak be EE ow aa HE OE S 34 7 2 4 Graph Scale 33 44 tare a a n a a EA 36 7 2 5 Display Res t s p rsa ds e A o de ds e A 38 Data Ment sessa 50 4 48 GMa oa wee 38 7 3 1 Data Record as amp eck he ias wh oe Sot Sot sh eh a He Mae hed 39 7 3 1 Record Setting o rr a a a A SS 40 Tala DMAVIEN lira A ii a wie a O daa 42 TIL Data Prints roaa aa aE Boe e E ER RA 43 TILA WatalStorage a AA ae Gy wee tain Boe ae a Shs S 44 Tals DataClear siii taras ease eR a RAR Re a 45 132 Daily Stats iuris a ai E A e aes A RA wee 46 732 Sta Seine naaa saree set ee eae dey nta E far ae 2 47 132 2 Stats View 2 4 25 4 2a hee ae a BRE RAE RS RR ARM RE RR AE 48 T3235 Stats Prisa a a Boe
183. window containing the LAN device settings which include EN ABLE DHCP ADDRESS GATEWAY MASK COMMAND and PAGE There might be a delay of several seconds when DHCP is enabled as the dy namic address settings are read from the LAN port device The unique MAC number of the instrument s network interface is displayed ENABLE when ON switches on the LAN When LAN is enabled the RF de vice will be disabled DHCP when ON enables dynamic addressing In this mode the instrument s network IP address gateway and subnet mask are set automatically by the net work server ADDRESS sets the network IP address of the instrument to be used when DHCP is off When DHCP is on this shows the dynamic address assigned by the network server GATEWAY sets the default gateway IP address to be used when DHCP is off When DHCP is on this shows the gateway address specified by the network server MASK sets the subnet mask to be used when DHCP is off When DHCP is on this shows the subnet mask specified by the network server COMMAND when ON enables access to settings using communication com mands listed in Section 8 Password protected settings still require the pass word for access When COMMAND is OFF settings can be read but not set 64 7 Menu Functions System Menu 7 5 4 even with th password When using Hart Scientific s LogWare III Software COMMAND must be ON for full functionality With applications where extra security
184. y Time tick marks are labeled at intervals with the hour or day labels being placed below 33 1620A DewK Thermo hygrometer User s Guide 34 7 2 3 and to the right of tick marks Tick marks with labels are drawn with short con tinuous lines and tick marks without labels are drawn with dotted lines Graphs are replotted when a different display layout is selected a display lay out s settings are changed or graph scale settings are changed Data for the graphs are extracted from recorded data in memory If recording is disabled graphs cannot be replotted and will appear empty until new data is collected Field Data The FIELD DATA function allows you to select a type of statistic for any of the fields in a STAT type zone This may be password protected see Section 7 5 4 Password Select the display layout on which to adjust the statistics field type and then select the zone to adjust This function can only be used with display layouts that contain STATS zones There are eight fields per zone Any field can be set to the following field types DATE TIME ID SERN TEMP T RATE T AVE T STD T MIN T MAX T SPR TN TRMAX T ALAR T DELT RHUM H RATE H AVE H STD H MIN H MAX H SPR H N H RMAX H ALAR H DELT DEWP HEAT REC CH BATT MEAS or BLANK See Table 2 for a definition of each of these parameters Statistics fields show running statistics of the measurements taken since the last statistics reset The st

1620A User Manual

Contents

Download Pdf Manuals

Related Search

Related Contents