Martel BetaGauge 311 and 321 Pressure Calibrator
Contents
1. TES P1 psi 0 00 mA 0 00 4 000 mA ERROR CONFIG LOWER MORE SIGNAI 3 Q 2 TEST al me P 7 P1 P2 Figure 12 Example Suppose a pressure transmitter under test is 30 psi 2 Bar Full Scale and outputs a corresponding 4 to 20 mA signal The user can program in a 0 to 30 psi pressure span into the calibrator and the calibrator will calculate and display the deviation or Error from the expected 4 to 20 mA output This eliminates the need for manual calculations and also helps if it becomes difficult to set an exact pressure with an external pump To use the ERROR function proceed as follows 1 With the calibrator turned on and operating press the F3 key to activate the MORE menu option Now press the F1 key to activate the ERROR option 2 Press the F1 key to select the CONFIG option 3 The first option is setting the Port use the select option to scroll through the port choices when finished select the NEXT option 4 LOOP POWER can be toggled on off select NEXT when done 5 Use SELECT to toggle through the UNIT options and select NEXT to move on 6 Use the T and J arrows to set 10096 point of the desired pressure range select DONE SET when finished 19 7 Again use the arrows to set 0962. calibrator Table 5 Common Commands Command Description CLS Clear status Clears the error queue IDN Identification query Returns the manufacturer model number and firmware revision level of the Calibrator RST Resets the calibrator to the power up state Table 6 Calibrator Commands Command Description CPRT_COEFA Sets the custom RTD coefficient A CPRT_COEFA Returns the custom RTD coefficient A CPRT_COEFB Sets the custom RTD coefficient B CPRT_COEFB Returns the custom RTD coefficient B CPRT_COEFC Sets the custom RTD coefficient C CPRT_COEFC Returns the custom RTD coefficient C CPRT_RO Sets the custom RTD RO resistance CPRT_RO Returns the custom RTD RO resistance DAMP Turns Damp on or off DAMP Returns if DAMP is on off DISPLAY Turns on off the displays specified in the command DISPLAY Returns which displays are on off FAULT Returns the most recent error code ERROR_LOOP Turns loop power on or off in percent error mode ERROR_LOOP Returns the current state of loop power in error mode ERROR_MODE Turns percent error mode on or off ERROR_MODE Returns whether percent error mode is on or off ERROR_PORT Set the pressure port for percent error mode ERROR_PORT Returns the pressure port for percent error mode FUNC Sets the display mode as specified in the command FUNC Returns the current mode of the upper middle and lower display HI ERR Sets the 10096 of span limit for percent error mode HI ERR
3. 20 10 Factory Setups sia s e geo tet Rn hg ROC RC tn 21 11 Custody Transfer Flow Calibration 22 12 Remote Operation 22 12 1 Remote Interface 22 12 2 Setting up the RS 232 Port for Remote Control 22 12 3 Changing Between Remote and Local Operation 23 12 4 Using Commands oh eee o jede tede 24 12 5 Remote Commands Error Codes 26 12 6 Entering Commands 28 13 Specifications eres ere ux Eee aed ee 36 14 Warranby on 37 15 Maintenance 37 l5lReplacing BatleneS 229442445455 ER re Ry Re es 37 15 2 Cleaning the Unit 255555522500 a SSS 37 15 3 Service Center Calibration or Repair 37 1 Introduction The Beta 311 321 is designed to be a simple to use yet very versatile pressure calibrator Its two internal pressure sensors combined with inputs for mA voltage switch contacts and an RTD probe allow the 311 321 to calibrate virtually any pressure device An external pressure module option allows an even wider range of pressure calibration options including absolute and differential The BetaGauge 311 is a single sensor pressure calibrator the BetaG
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5. 2 ST EXT ST mA xXx gt lt gt lt mA Loop lt gt lt 2 lt 2 lt gt lt Volts gt lt gt lt gt lt lt 0X gt lt gt lt gt lt gt lt lt 0X lt gt lt gt lt gt lt 1 RTD Note P2 is only available on the model 321 2 1 1 3 Accessing Other Menus Use the MORE option on the Main Menu to access the other menu functions ml Parameter Selection NEXT SELECT DONE i Main Menu CONFIG DISPLAY MORE Error Main Menu NEXT DONE Error Main Menu CONFIG EXIT Pressure Port Select Menu i SELECT NEXT DONE r Menu Loop Power Select Menu ON OFF NEXT DONE Unit Select Menu SELECT NEXT 100 Select Menu DONE SET 7 Y v 0 Select Menu DONE SET 2 Y v Back to Error Main Menu MINMAX Min Max Main Menu NEXT DONE Max Display Menu MAX CLEAR DONE Y Min Display Menu MIN CLEAR DONE i Contrast Main Menu CONTRAST NEXT DONE Contrast Adjust Menu CONTRAST Done 4 Lock Config Menu LOCK CONFIG NEXT DONE Save Recall Menu RECALL DONE AUTO OFF Auto Off Main Menu NEXT
6. DONE Figure 4 Menu Map Setup Select Menu RCLSETUP FLY Auto Off Adjust Menu auto or DONE 4 Y v Display Select Menu ON OFF LOWER DONE v Display Main Menu DISPLAY NEXT is Back to Main Menu Probe Type Select Menu SELECT DONE Damp Main Menu DAMP NEXT DONE B Main Menu Damp Select Menu ON OFF T B Main Menu 2 2 Using the Backlight The backlight is controlled by the dedicated backlight key It toggles on and off when the key is pressed this is one of the few functions that cannot be controlled by the serial interface There are no user configuration settings for the backlight 2 3 Using the Zero Function When the ZERO KEY is pressed the calibrator will zero the current display if a pressure mode is selected and the pressure is within the zero limit The zero limits are within 596 of the full scale range of the selected sensor If the display indicates OL the zero function will not operate 2 3 1 Internal Sensor and Pressure Module non absolute When a sensor or module is selected on the current display and the ZERO KEY is pressed the calibrator subtracts the current reading from the output The zero limits are within 596 of the full scale range of the selected sensor If the display indicates OL the zero function will not operate 2 3 2 Absolute Internal Sensor
7. ERROR MODE It will return ON if the calibrator is in percent error mode ERROR PORT Sets the pressure port for percent error For example To set the pressure port for percent error to P1 send ERROR PORT P1 ERROR PORT Retums the current pressure port for percent error mode For example If you send ERROR PORT it will return P1 if the pressure port in percent error is P 1 FUNC Sets the display indicated in argument one to the function indicated in argument 2 For example To set the lower display to RTD mode send FUNC LOWER RTD FUNC Returns the current mode of all displays For example if the calibrator is set to P 2 ST on the upper display P1 on the middle and RTD on the lower FUNC Would return ST P2 PLRTD HI ERR Sets the 100 point for the percent error mode calculation in the current engineering units For example To set the 100 point to 100 psi send HI ERR 100 HI ERR Returns the 10096 point for the percent error mode calculation For example If the 100 point is set to 100 psi HI ERR would return 1 000000E 02 PSI LOCAL Restores the calibrator to local operation if it was in remote mode Also clears LOCKOUT if the calibrator was in lockout mode LOCKOUT Sending this command sets the lockout state when the unit is in REMOTE or goes to remote it prohibits use of the keypad completely The lockout state can only be cleared by sending the LOCAL command LO ERR Sets the 09
8. Physical Dimensions 8 3 H x 3 9 W x 1 8 D 21 082 x 9 906 x 4 572 cm Weight 1 Ib 4 oz 0 567 kg EMI RFI Conformance EN50082 1 1992 and EN55022 1994 Class B Connectors Ports Pressure two 1 8 NPT BetaPort P pressure module adapter RTD probe Included Accessories Soft case batteries manual NIS T traceable certificate and test leads Ranges Available Pressure select any two Gauge 0 3 psi 1 psi 5 psi 15 psi 30 psi 100 psi 300 psi 500 psi 1000 psi 3000 psi 5000 psi 10 000 psi Absolute 15 psi 30 psi 100 psi 300 psi Compound 15 to 15 psi 15 to 30 psi see table of ranges and resolutions for more information mA 0 to 24 000 mA Volts 0 to 30 000 VDC RTD 40 0 C to 105 0 C 40 0 F to 220 0 F Engineering Units psi mbar kPa MPa kgcm2 mmH O 4 C mmH O 20 C cmH 0 4 C 0 20 C inH 0 9 4 C inH O 20 inH 0 60 F mmHg 0 C inHg 0 C Accuracy Pressure 0 3 psi 0 1 F S 1 0 psi 5 psi 0 05 F S 15 psi through 3000 psi 5000 psi 10 000 psi 0 025 F S 0 035 F S mA 0 015 of rdg 0 002mA Volts 0 015 of reading 0 002V RTD ohms 0 015 of rdg 0 02 ohms or 0 1 C 0 C for Pt100 Temperature Effect No effect on accuracy on all functions from 15 C to 35 C Add 0 002 F S C for temps outside of 15 C to 35 C Optional LPT100A Probe Meets
9. The Calibrator Display consists of two regions The menu bar located along the bottom ofthe screen is used to access a menu system The main display the rest consists of up to three process measurement sub regions These sub regions will henceforth be referred to as the UPPER MIDDLE and LOWER displays Figure 3 shows the location of the different display fields while table 3 describes them P1 pic 3 s mA Donde Q RTD 0 P T29 CONF UPPER MORE 5 Figure 3 Display Table 3 Display Functions No Name Description 1 Primary Parameters Indicates what is being measured 2 Span Indicator Indicates the percent of the 4 to 20 mA span For mA and mA Loop functions only 3 Pressure Units Indicates one of 17 pressure units available for display 4 Units Indicates the unit of measure for the display 2 1 1 Main Menu Functionality There are three options on the Main Menu CONFIG current display and MORE The Main Menu is home for the menu display CONFIG LOWER MORE 2 1 1 1 Setting the Current Display The current display is indicated by the center option on the Main Menu pressing the F2 key will toggle the current display 2 1 1 2 Setting Current Display Parameters To set the parameters of the current display use the CONFIG option to get to the Display Configuration Menu SELECT NEXT DONE Here the SELECT option will toggle throug
10. Turns the dampening function on or off For example If you send DAMP ON this will turn the dampening function on DAMP Returns the current state of the dampening function For example If you send DAMP It will return ON if the dampening function is on DISPLAY Turns the indicated display on or off For example If you send DISPLAY LOWER ON this will turn the lower display on DISPLAY Returns the current state of the each of the displays For example If you send DISPLAY It will return ON ON ON if the all the displays are on FAULT Retums the error code number of an error that has occurred The command may be entered when the previous command did not do what it was meant to do For example if a value for current output is entered that is bigger than the supported range 0 24mA FAULT Would return 3l 32 103 which is the code number for an entry over range Refer to the Error Codes table for more information on error code numbers ERROR LOOP Turns loop power on or off in percent error mode For example To setloop power on send ERROR LOOP ON ERROR LOOP Retums the current state of loop power in percent error mode For example If you send ERROR LOOP It will return ON if loop power is on in error mode ERROR MODE Turns percent error mode on and off For example To turn on percent error mode send ERROR MODE ON ERROR MODE Returns the current state of percent error mode For example If you send
11. also be disabled To set the auto shut off parameters select the AUTO OFF option on the Auto Shut Off Main Menu AUTO OFF NEXT DONE 10 Use the arrow keys to select the number of minutes before the calibrator turns off or disable auto shut off by scrolling all the way down AUTO SHUTDOWN ON AUTOOFFDONE 4 Use the AUTO OFF DONE option to set the parameters and retum home The auto shut off time is reset whenever a key is pressed 2 4 5 Activating and Deactivating a Display Use the DISPLAY option on the Display Selection Main Menu to access the Display Activation Menu DISPLAY NEXT DONE The function option can be used to select which display to act upon The ON OFF option turns the selected display on or off The selected display and current on off state are displayed in the lower display MIDDLE ON ON OFF MIDDLE DONE Use the DONE option to save the changes and return home When a display is deactivated its configuration is retained When the display is activated its configuration is checked against the configurations of the other currently active displays if the configurations are in conflict the recalled display s configuration is modified to avoid the conflict If all three displays are deactivated the LOWER display will come on automatically 2 4 6 Setting the RTD probe type Use the PROBE TYPE option of the RTD Probe Type main menu to access the RTD Probe selection men
12. inches of water at 20 INH2060F Pressure in inches of water at 60 F CMH204C Pressure in centimeters of water at 4 CMH2020C Pressure in centimeters of water at 20 C BAR Pressure in bars MBAR Pressure in millibars MPAL Pressure in MegaPascals KPAL Pressure in kiloPascals INHG Pressure in inches of mercury at 0 C MMHG Pressure in millimeters of mercury at 0 KG CM2 Pressure in kilograms per square centimeter MMH204C Pressure in millimeters of water at 4 C MMH2020C Pressure in millimeters of water at 20 C 28 ON something on OFF Turn something off UPPER Upper Display MIDDLE Middle Display Lower Lower Display DCI Current measure function DCI LOOP Current measure function with loop power DCV Voltage measure function RTD Temperature measure function P1 Port P1 pressure measure function P2 Port P2 pressure measure function P1 ST Switch Test with port P1 pressure measure function P2 ST Switch Test with port P2 pressure measure function Table 8 Error Codes Error Number Error Description 100 A non numeric entry was received where it should be a numeric entry 101 Too many digits entered 102 Invalid units or parameter value received 103 Entry is above the upper limit of the allowable range 104 Entry is below the lower limit of the allowable range 105 A required command parameter was mis
13. point and select DONE SET when finished and the ERROR mode will be ready to use SET 0 BELOW psi 0 000 DONESET 4 D Note The 0 and 100 point will be saved in non volatile memory until they are changed again by the user for the internal sensors and external pressure modules When using an external module the 096 and 10096 are setto low and full scale ofthe module until the user changes it or if it was previously saved P1 psi 0 0000 P2 psi 0 00 RTD 85 78 F CONFIG LOWER MORE 9 Minimum and Maximum Storage Capability 20 The 300 Series Pressure Calibrators have a min max feature for capturing the minimum and maximum values of any displayed parameter The min max function can be accessed by stepping through the menu options until min max is shown on the display above the F1 key At this time pressing the F1 key will toggle the display through the min max values that are stored in the min max registers These readings are live so thatthe new min max values will be recorded while in this mode P1 psi P1 psi 0 003 30 000 mA 25 00 mA 25 00 4 000 mA 20 001 mA MIN CLEAR DONE MAX CLEAR DONE To reset the min max registers simply press the clear key These registers are also cleared at power up or when the configuration is changed 10 Factory Setups The Calibrator is loaded with five factory setups These setups are shown below Setup 1 Th
14. 6 point for the percent error mode calculation in the current engineering units For example To setthe 096 pointto 20 psi send LO ERR 20 LO ERR Returns the 0 point for the percent error mode calculation For example If the 096 point is set to 20 psi LO ERR would return 2 000000E 01 PSI 33 34 OHMS Retums the raw Ohm value from the RTD For example If when measuring a P 100 385 at 0 degrees cel sending OHMS would return 1 000000E 02 OHM PRES UNIT Used to set the pressure unit for the indicated display For example To setthe pressure unitto psi on the lower display send PRES UNIT LOWER PSI PRES UNIT Retums the pressure unit used when measuring pressure for each of the 3 displays REMOTE Puts the calibrator in remote mode From the remote mode the user can still use the keypad to get back to local unless the command LOCKOUT was entered before REMOTE Than the keypad is totally locked out and the user has to send the LOCAL command to get back to local operation RTD TYPE Sets the RTD type The following is a list of RTD types the way they should be entered after the command PT385 100 PT392 100 PTJIS 100 CUSTOM For Example RTD TYPE PT385 100 sets RTD type to PT100 385 RTD TYPE Returns the RTD type For Example If the RTD type is PT385 100 RTD TYPE Will return PT100 385 ST START Starts a switch test ST CLOSE Returns the pressure that the switch closed at in the current pressur
15. 890 Lvve 0 89000 0 vveo 0 89000 2000 9 68900 edW 87689 vLbve v89oc CvEOT 8 vos9 VLbve 78900 8vV 689 vLvvE 78904 cV or VLV VE 87689 789074 4477689 V N V N V N V N 8v689 vLvve 78900 8 689 v Vvt 78900 T YEOT VL VE 87689 789704 4477689 Jequu 47689 VL vv v8 90c CV EOl Zv6 89 ve vSa9 Oc Lv689 789072 cVEO T Lvve o 6890 0 40200 447768900 Jeq 00000 0000 lt 00006 O OOSI 00000 007006 00006 0000 00006 00006 000741 000075 00007 00060 ISd OOOST OOOOT 0009 000 000 OOOT 009 ooz 00z 09 oE ST T ISd eunsseug joouq OOOST 0000 OOOOT 0000 0000 0004 0004 OOOT OOOT oos 00S OOT OT OT 15 eunsseug sung 00001 000 lt 000 OOST OOOT 004 00 OOT OS S ISd suonn osey pue sebuey ebneoejyeg 38 MARTEL LECTRONICS CALIBRATORS www martelcorp com e mail sales martelcorp com Tel 603 434 8179 800 821 0023 Fax 603 434 1653 Martel Electronics PO Box 770 1F Commons Drive Londonderry NH 03053 5 07 RevE 0219243
16. BEIAGAUGE 311 321 Reference Manual MARTEL LECTRONICS BETAGauge 311 321 Reference Manual 1 Introd ction admet Ue n ROG E Bee UR RR e S 1 1 1 Contacting Martel Beta 1 1 2 Standard Equipment cee ate ee ea ees 1 1 3 Safety Information 2 52 a a ee 1 2 Calibrator Interface 3 2 1 Calibrator Display gt ans Re CR c I 5 2 2 Using the Backlight 8 2 3 Using the Zero Function 8 2 4 Other Menu Controlled Functions 8 3 Measuring Pressure 11 3 1 Media Compatibility 11 3 2 Measuring Pressure with External Modules 11 4 Measuring Current 5 25 4 2 bw ee ote Re RP 12 5 Measuring Voltage 13 6 Measuring Temperature with RTD 13 7 Performing a Pressure Switch Test 14 8 Calibrating Transmitters 16 8 1 Using the mA Input Function 16 8 2 Calibrating a Pressure to Current Transmitter 17 8 3 Percent Error FUNCOM eee ne ex dod 18 9 Minimum and Maximum Storage Capability
17. E 4 2 4 2 Locking and Unlocking Configurations Use the LOCK CFG or UNLOCK CFG option of the Configuration Lock Menu to lock or unlock the display configuration LOCK CFG NEXT DONE When the LOCK CFG option is chosen the menu display returns home and the CONFIG option on the Main Menu indicates that it is locked Also all menus are locked out with the exception of the Contrast Adjustment menus and the Configuration Lock Menu When the UNLOCK CFG option is chosen the configuration is unlocked and the menu display continues to the next sub main menu 2 4 3 Saving and Recalling Setups The calibrator will automatically save the current set up for recall at power up Additionally 5 setups can be accessed through the SETUPS menu Select the SETUPS option from the Setups Main Menu SETUPS NEXT DONE Choose SAVE to save a setup RECALL to recall the set up or DONE to do nothing and return home SAVE RECALL DONE If SAVE or RECALL is selected use the arrow keys to select the set up location Then use the save option to store the current set up into the selected location or the recall option to recall the set up stored in the selected location The display menu will automatically go home SAVESETUP1 4 RCLSETUP1 t Y 2 4 4 Setting AutoShut off Parameters The calibrator can be set to automatically shut off after a selected number of minutes this function can
18. OCKOUT in either order 3 To switch back to local operation enter LOCAL at terminal This command also turns off LOCKOUT if it was on For more information on commands refer to the Remote Commands section 12 4 Using Commands 12 4 1 Command types Refer to the Section 10 5 on Remote Commands for all available commands The calibrator may be controlled using commands and queries All commands may be entered using upper or lower case The commands are divided into the following categories Calibrator Commands Only the calibrator uses these commands For example VAL asks for the values displayed on the calibrator display Common Commands Standard commands used by most devices These commands always begin with an For example IDN tells the calibrator to return its identification Query Commands Commands that ask for information they always end with a For example FUNC Returns the current modes of the calibrator displays Compound Commands Commands that contain more than one command on one line For example TYPE PT385 100 RTD TYPE Sets the calibrator to RTD type PT385 100 and queries itto verify It will return PT385 100 12 4 2 Character Processing The data entered into the calibrator is processed as follows ASCII characters are discarded if their decimal equivalent is less than 32 space except 10 LF and 13 CR Data is taken as 7 bit ASCII most significant data bi
19. PT 100 ALPHA 385 Class A Specifications 36 14 Warranty Martel Electronics Corporation warrants all products against material defects and workmanship for a period of twelve 12 months after the date of shipment Problems or defects that arise from misuse or abuse of the instrument are not covered If any product is to be returned a Return Material Authorization form can be obtained from our website www martelcorp com under customer service You can also call 1 800 821 0023 to have a form faxed Martel will not be responsible for damage as a result of poor return packaging Out of warranty repairs and recalibration will be subject to specific charges Under no circumstances will Martel Electronics be liable for any device or cirrumstance beyond the value of the product 15 Maintenance 15 1 Replacing Batteries Replace batteries as soon as the battery indicator turns on to avoid false measurements If the batteries discharge too deeply the BETA 311 321 will automatically shut down to avoid battery leakage Note Use only AA size alkaline batteries or optional rechargeable battery pack 15 2 Cleaning the Unit Warning To avoid personal injury or damage to the calibrator use only the specified replacement parts and do not allow water into the case Caution To avoid damaging the plastic lens and case do not use solvents or abrasive cleansers Clean the calibrator with a soft cloth dampened with water or water and mild
20. Returns the 10096 of span limit for percent error mode LOCAL Returns user to manual operation of the calibrator LOCKOUT Locks out the keypad of the calibrator in remote operation LO ERR Sets the 096 of span limit for percent error mode 27 LO ERR Returns the 096 of span limit for percent error mode OHMS Returns ohms value measured from the RTD PRES UNIT Set the pressure unit for the indicated display PRES UNIT Returns the pressure from the indicated display REMOTE Puts the calibrator in remote mode RTD TYPE Sets the RTD type RTD TYPE Returns the RTD type ST START Starts a switch test ST OPEN Returns pressure value at which the switch opened ST CLOSE Returns pressure value at which the switch closed ST DEAD Returns pressure value of the deadband of the switch TEMP UNIT Set the RTD to read in F or C on the indicated display TEMP UNIT Returns the unit the RTD is setto read on the indicated display VAL Returns the measured values ZERO MEAS Zeros the pressure module ZERO MEAS Returns the zero offset of the pressure module Table 7 Parameter units Units Meaning MA milliamps of current V Voltage in volts CEL Temperature in Celsius FAR Temperature in Fahrenheit OHM Resistance in Ohms PSI Pressure in pounds per square inch 204 Pressure inches of water at 4 C INH2020C Pressure in
21. S 232 port on the computer The calibrator should be turned off prior to making the connection and then turned on To set up remote operation of calibrator on the Windows Hyper Terminal connected to a COM porton the PC as in Figure 23 use the following procedure l Start Hyper Terminal located in Accessories Communications of the Windows Start menu 2 Select New Connection 23 For Name enter Beta 311 321 Select the serial portthat the calibrator is connected to Enter the above information for port settings Select ASCII setup from File Properties Settings and mark these choices Echo typed characters locally Wrap lines that exceed terminal width 6 Select Ok 7 To see if the port works enter IDN This command will return information on the calibrator 12 3 Changing Between Remote and Local Operation There are three modes of operation of the calibrator Local Remote and Remote with Lockout Local mode is the default mode Commands may be entered using the keypad on the calibrator or using a computer In Remote mode the keypad is disabled and commands may only be entered using a computer but choosing GO TO LOCAL from the menu on the calibrator display will restore keypad operation In Remote with Lockout the keypad can not be used atall To switch modes proceed as follows 1 To enable Remote mode type in the serial command REMOTE at the computer terminal 2 To enable Remote with Lockout type in REMOTE L
22. The previous example uses a normally closed switch The basic procedure is still the same for a normally open switch the display will just read OPEN instead of CLOSE 8 Calibrating Transmitters 16 8 1 Using the mA Input Function The mA input function allows the user to read back the 4 20 mA output from the device being calibrated This can be done in one of two ways 1 Passively Where the device under test directly generates 4 20 mA and can be read by the calibrator 2 Actively Where the calibrator supplies 24 VDC loop power to the device under test to power the device while reading the resulting 4 20 mA signal 8 2 Calibrating a Pressure to Current Transmitter To calibrate a pressure to current transmitter P I perform the following steps 1 2 3 4 Connect the calibrator and the pump to the transmitter Apply pressure with the pump Measure the current output of the transmitter Ensure the reading is correct If not adjust the transmitter as necessary SIGNAI Z r Figure 11 9 17 18 8 3 Percent Error Function The calibrator features a unique function which can calculate pressure vs milliamp error as a percentage of the 4 to 20 mA loop span The percent error mode uses all 3 screens and has a unique menu structure It simultaneously displays pressure mA and percent error
23. auge 321 is a dual sensor pressure calibrator The 311 uses the P1 port for all pressure inputs The P2 port is only used on the model 321 Therefore on the model 311 all menu choices involving pressure are limited to the P1 port only All other model 311 features and functions are the same as for the 321 1 1 Customer Service Corporate Office www martelcorp com e mail sales martelcorp com Tel 603 434 8179 800 821 0023 Fax 603 434 1653 Martel Electronics PO Box 770 1F Commons Drive Londonderry NH 03053 1 2 Standard Equipment Check to see if your calibrator is complete It should include Beta 311 321 Calibrator instruction manual test leads carrying case calibration certificate with data 1 3 Safety information Symbols Used The following table lists the International Electrical Symbols Some or all of these symbols may be used on the instrument or in this manual Symbol Description AC Alternating Current 7 2 AC DC Battery MA CE Complies with European Union Directives DC Double Insulated Symbol Description o a u Electric Shock Fuse PE Ground Hot Surface Burn Hazard Read the User s Manual Important Information Off On Canadian Standards Association The following definitions apply to the terms Warning and Caution Warning identifies conditions and actions that may pose hazards to the user Caution ident
24. e displays Make sure the proper probe type is selected There are 4 probe types supported P 100 385 P 100 392 P100 J IS and CUSTOM The standard probe has a 9 insertion depth with a 3 16 diameter stainless steel sheath Note The factory default type is PT100 385 so if the 311 321 is being used with the Martel Model LPT100A probe you do not have to setthe probe type Simply plug the probe into the 311 321 and configure the display to read temperature Note The display will indicate OL when the measured temperature is outside the nominal measurement range of the RTD function below 40 C or above 105 C If a custom probe is being used the entering of RO and coefficients is handled through the serial interface see section 11 78 345 F CONFIG LOWER MORE RTD Probe 9 09 Figure 9 7 Performing a Pressure Switch Test BETAGAUGE P1 ST CLOSE psi CONFIG LOWER MORE Figure 10 To perform a switch test follow these steps 1 Change the setup to Setup 4 default switch test Setup 4 The upper display is setto P1 ST all other displays are off Important NOTE The pressure Switch Test can be performed with the following 14 functions P 1 ST P2 ST or EXT ST 2 Connect the calibrator to the switch using
25. e is plugged in 6 Serial Interface This is used to interface to optional external modules as well as for RS 232 serial communications with a PC using the LEM 232 cable optional Figure 2 shows the location ofthe keys Table 2 describes the function of each key ERE T A BETAGAUGE MODEL 321 mi 25 00 000mA RTD CONF UPPER MORE 1 2287 Gv vc f e Oael ON lu ee Figure 2 Keypad Table 2 Key Functions No Name Description 1 Function Keys These keys are used in various ways primarily to config ure the calibrator ON OFF Key This key is used to turn the calibrator on and off ZERO Key This key is used to zero pressure measurements 4 Backlight Key This key is used to turn the backlight on and off Note When the calibrator is turned on by pressing the ON OFF key it will go through a short startup self check routine During that routine the display shows the current firmware revision level auto shutdown status and the ranges ofthe 2 internal pressure sensors The calibrator requires a maximum of 5 minutes warm up to rated accuracy Large changes in ambient temperature may require a longer warm up period See section 2 3 for instructions on zeroing the pressure sensor displays Pressure ranges should be zeroed each time the calibrator is started 2 1 Calibrator Display
26. e units ST OPEN Retums the pressure that the switch opened at in the current pressure units ST DEAD Returns deadband of the switch in the current pressure units TEMP UNIT This command is used to the temperature unit used when measuring temperature The first argument indicates which display to apply the change to The second argument is the unit either CEL for Celsius or FAR for fahrenheit For example To set the temperature unit to fahrenheit on the lower display send TEMP UNIT LOWER FAR TEMP UNIT Returns the temperature unit CEL or FAR used when measuring RTDs for each of the 3 displays VAL Returns the value of any measurement taking place on the upper and lower display For example if the upper display is measuring 5mA and the lower display is measuring 10V then VAL will return 5 000000E 03 A 1 000000E 01 V ZERO MEAS Zeroes the attached pressure module Enter the zeroing value in PSI after the command when zeroing an absolute pressure module ZERO MEAS Retums the zero offset or the reference value for absolute pressure modules 35 13 Specifications 18 to 28 unless otherwise noted General Instrument Setup Recall 5 last used on power up Environmental Operating Temperature Storage Temperature 10 C to 50 C 20 C to 60 C Power Requirements 6 0 VDC Battery Four 4 standard AA cells Battery Life gt 35 hours typical usage
27. e upper display is set to P1 mode and the middle is set to mA lower is off Setup 2 The upper display is set to P2 mode and the middle is set to mA lower is off Setup 3 The upper display is set to P1 mode and the middle is set to P2 lower is off 21 Setup 4 The lower display is set to P 1 switch test the other displays are off P1 ST CLOSE psi 0 000 CONFIG LOWER MORE Setup 5 The upper display is set to P 1 the middle display is set to P2 and the lower display is set to RTD 1 ps 0 0000 P2 psi 0 00 89 8 F CONFIG LOWER MORE RID 11 Custody Transfer Flow Calibration The Model 311 321 is ideal for flow computer calibration Every manufacturer of flow computers has a different calibration procedure but most call for calibration of three parameters static pressure differential pressure and temperature To facilitate these measurements recall setup 5 on the 311 321 Note The pressures in the UPPER and MIDDLE displays can be changed to P1 P2 and EXT 1 Connect the calibrator to your static and differential pressures P1 P2 EXT Then connect the RTD sensor to the calibrator 2 Using the reading of your RTD static and differential pressures make sure the flow computer has the correct reading If not adjust the flow computer as necessary 12 Remote Operation 22 12 1 Remote Interface The calibrator can be remotely cont
28. h the choices for each parameter The first parameter is MODE Since voltage current and switch test modes all use the same jacks two of these functions cannot be used concurrently The ability to select certain functions is limited based on whatis already selected in another active display The NEXT option is used to change to the second parameter Only RTD and Pressure modes have a second parameter RTDs can be read in Celsius or Fahrenheit and Pressures can be read in 11 engineering units With a single display the following modes are available P 1 Pressure on left side sensor P 2 Pressure on right side sensor EXT Pressure with external pressure module P 1 ST Switch Test with left side sensor P 2 ST Switch Test with right side sensor EXT ST 2 Switch Test with external pressure module mA Milliamps measure without loop power mA LOOP Milliamps measure with loop power VOLTS Voltage Measure RTD RTD Temperature Measurement if a probe is connected The following table shows which functions are available concurrently An X in a column indicates that the mode in the current display will not be available for selection if the mode in that row is in use in any other active display Table 4 Mode Concurrency CURRENT DISPLAY OTHER DISPLAYS P1 P 2 EXT P 1 ST P 2 ST EXT ST mA mA Loop Volts RTD P 1 P 2 EXT P 1 ST P
29. ifies conditions and actions that may damage the instrument being used Use the calibrator only as specified in this manual otherwise injury and damage to the calibrator may occur A Warning To avoid possible electric shock or personal injury Do not apply more than the rated voltage See specifications for supported ranges Follow all equipment safety procedures Never touch the probe to a voltage source when the test leads are plugged into the current terminals Do not use the calibrator if it is damaged Before you use the calibrator inspect the case Look for cracks or missing plastic Pay particular attention to the insulation surrounding the connectors Select the proper function and range for your measurement Make sure the battery cover is closed and latched before you operate the calibrator Remove test leads from the calibrator before you open the battery door Inspect the test leads for damaged insulation or exposed metal Check test leads continuity Replace damaged test leads before you use the calibrator When using the probes keep your fingers away from the probe contacts Keep your fingers behind the finger guards on the probes Connect the common test lead before you connect the live test lead When you disconnect test leads disconnect the live test lead first Do not use the calibrator if it operates abnormally Protection may be impaired When in doubt have the calibrator serviced Do notopera
30. nt CPRT_COEFA Returns the number that was entered for the first coefficient of the polynomial used in the custom RTD Using the example above CPRT_COEFA Would return 3 908300E 03 CPRT_COEFB This command is used for entering a custom RTD into the calibrator The numeric value entered after the command will be set as the second coefficient of the polynomial used by the custom RTD For example CPRT_COEFB 5 774999E 07 enters 5 774999E 07 as coefficient B CPRT_COEFB Returns the number which was entered for the second coefficient of the polynomial used in the custom RTD Using the example above CPRT COEFB Would return 5 774999 07 CPRT COEFC This command is used for entering a custom RTD into the calibrator The numeric value entered after the command will be set as the first coefficient of the polynomial used by the custom RTD For example CPRT COEFC 4 183000E 12 enters 4 183000E 12 as coefficient C CPRT COEFC Retums the number that was entered for the third coefficient of the polynomial used in the custom RTD Using the example above CPRT COEFC Would return 4 183000E 12 CPRT RO Sets the 0 resistance RO in the custom RTD The value must be entered with a units label Refer to the Parameter Units table for assistance For example CPRT RO 100 OHM sets RO to 100 ohms CPRT RO Returns the value for the resistance in custom RTD The above example would return 1 000000 02 OHM DAMP
31. olution is derived from the module CONFIG LOWER Model BPPA Pressure Module Adapter PRESSURE MODULE Figure 6 Measuring Current To measure current use the input terminals in the front of the calibrator Select the mA function on one of the displays Current is measured in mA and percentage of range The range on the calibrator is set to 096 at 4 mA and 10096 at 20 mA Note The display will indicate OL when the measured current exceeds the nominal range of current measurement 24 milliAmps For example If the current measured is displayed as 7596 then the mA value is 16 mA mA 75 00 mE 440 20 16 000 mA CONFIG LOWER MORE Figure 7 5 Measuring Voltage To measure voltage use the input terminals in the front of the calibrator Select the Volts function on one of the displays The calibrator can measure up to 30V Note The display will indicate OL when the measured voltage exceeds the nominal range of voltage measurement 30 V VOLTS 30 000 V CONFIG LOWER MORE Up to 30V Under Figure 8 6 Measuring Temperature with an RTD To measure temperature using an RTD probe you must select the RTD function on one of th
32. or Absolute Pressure Module When an absolute pressure module is selected on the current display and the ZERO KEY is pressed the calibrator prompts the user to enter the barometric reference pressure This is done using the arrow keys F2 and F3 Keys The sensor port should be open vented to atmosphere while performing this procedure PRESSURE REFERENCE 14 469 SETREFDONE 4 2 4 Other Menu Controlled Functions There are eight sub main menus that can be accessed through the MORE option of the Main Menu A sub main menu contains three options The first option is unique to the function The second and third options of a sub main menu are always the same The NEXT option leads to the next sub main menu and the DONE option retums home For the last sub main menu the NEXT option wraps around to home See Figure 4 fora detailed mapping of the menu structure A note on naming convention If a sub main menu has subordinate menus it will henceforth be referred to as function Main Menu E g the display contrast sub main menu will be called the Contrast Main Menu If not it will be called the function menu 2 4 1 Setting the Contrast From the Contrast Main Menu choose the CONTRAST option to access the Contrast Adjustment Menu CONTRAST NEXT DONE Use the arrow keys to adjustthe display contrast to the desired level and then use the CONTRAST DONE option to return home CONTRASTDON
33. rolled using a PC terminal or by a computer program running the calibrator in an automated system It uses an RS 232 serial port connection for remote operation NOTE To use the remote control option a custom RS 232 cable must be purchased from Martel LEM232 To contact Martel refer to Section 1 1 of this manual With this connection the user can write programs on the PC with Windows languages like Visual Basic to operate the calibrator or use a Windows terminal such as Hyper Terminal to enter single commands Typical RS 232 remote configurations are shown in Figure 13 COM PORT Cass fe e BES CX A 3 SE Figure 13 Calibrator to Computer Connection 12 2 Setting up the RS 232 Port for Remote Control Note The RS 232 connection cable should not exceed 15m unless the load capacitance measured at connection points is less than 2500pF Serial parameter values 9600 baud 8 data bits 1 stop bit no parity Xon Xoff EOL End of Line character or CR Carriage Return or both The LEM232 cable is used for RS 232 communications from the calibrator to a computer If the computer only has USB type ports a USB to RS 232 converter will be needed These can be obtained from most office supply and computer stores To connect the calibrator to the computer attach the LEMO connector end of the cable to the pressure module port on the right side of the calibrator and the DB 9 connector to the R
34. sing 106 An invalid command parameter was received 107 Pressure not selected 108 Invalid sensor type 109 Pressure module not connected 110 An unknown command was received 111 Bad Parameter received 112 The serial input buffer overflowed 113 Too many entries in the command line 114 The serial output buffer overflowed 12 6 Entering Commands Commands for the calibrator may be entered in upper or lower case There is at least one space required between the command and parameter all other spaces are optional Almost all commands for the calibrator are sequential any overlapped commands will be indicated as such This section will briefly explain each of the commands and describe their general use which will include any parameters that may be entered with the command as well as whatthe output of the command is 29 30 12 6 1 Common Commands CLS Clears the error queue Also terminates all pending operations When writing programs use before each procedure to avoid buffer overflow IDN Returns the manufacturer model number and firmware revision of the Calibrator For example IDN will return BETA 311 321 0 1 00 12 6 2 Calibrator Commands CPRT_COEFA This command is used for entering a custom RTD into the calibrator The numeric value entered after the command will be set as the first coefficient of the polynomial used by the custom RTD For example CPRT_COEFA 3 908300E 03 enters 3 908300e 3 as coefficie
35. soap 15 3 Service Center Calibration or Repair Only qualified service personnel should perform calibration repairs or servicing not covered in this manual If the calibrator fails check the batteries first and replace them if needed Verify that the calibrator is being operated as explained in this manual If the calibrator is faulty call for an RMA number or go to www martelcorp com to download an RMA form to return the unit Be sure to pack the calibrator securely using the original shipping container if it is available 37 sebuei SOU JO SUOISIAA eunssaud ainjosqe serdde osje sebuei Sd OOE pue OE 9u140J sebuei eynjosqy ebuei punodwod O ST Q serjdde osje ebuei 64 OE 104 Qep punodwiod Sd ST Q ST 03 serdde osje Sd ST 40J Qep y sebuei soud WIM OZH se gun eus esn eui 3lqiuoud pjnow e2n 2eid 3seq sese JO3eugije SUOISIAA uim sjojeiqije 104 uonnjosai Ae Anfu su peKonsep Jo pebeuuep 10sues eunssaJd 3sung uoneJqye ul yS ainssaid ajqemoyje uunuurxeuu eunssajd 5105 5 euns aq Q Asiou A oArssa xo aq ejdsip eui e Aejdsip 3duuame M dsip uo suoneiuui enp pade dsip
36. t is ignored Upper or lower case is acceptable 12 4 3 Response Data Types The data returned by the calibrator can be divided into four types Integer For most computers and controllers they are decimal numbers ranging from 32768 to 32768 For example FAULT could 110 Refer to the Error Codes table Table 8 for more information on error codes Floating Floating numbers have up to 15 significant figures and exponents For example CPRT COEFA returns 3 908300E 03 Character Response Data CRD Data returned as keywords For example RTD TYPE retums PT385 100 Indefinite ASCII IAD Any ASCII characters followed by a terminator For example IDN returns BETA 311 321 250 1 00 25 26 12 4 4 Calibrator Status Error Queue If an error occurs due to invalid input or buffer overflow its error code is sentto the error queue The error code can be read from the queue with the command FAULT The error queue holds 15 error codes When it is empty FAULT returns 0 The error queue is cleared when power is reset or when the clear command CLS is entered Input Buffer Calibrator stores all received data in the input buffer The buffer holds 250 characters The characters are processed on a first in first out basis 12 5 Remote Commands and Error Codes The following tables list all commands and their descriptions that are accepted by the
37. te the calibrator around explosive gas vapor or dust When measuring pressure make sure the process pressure line is shut off and depressurized before you connect it or disconnect it from the pressure module Disconnecttest leads before changing to another measure or source function When servicing the calibrator use only specified replacement parts To avoid false readings which could lead to possible electric shock or personal injury replace the battery as soon as the battery indicator appears Caution To avoid possible damage to calibrator or to equipment under test Use the proper jacks function and range for your measurement or sourcing application 2 Calibrator Interface Figure 1 shows the location of the process measurement inputs while table 1 describes their use BETAGAUGE MODEL 321 P1 psi 0 0 25 00 mA 0 000 mA RTD TEP o CONF UPPER MORE C 30V x mn e L LJ Lj Side View Figure 1 Pressure Measurement Inputs Table 1 Process Measurement Inputs No Name Description 1 2 Input Terminals These terminal are used to measure current voltage and a contact closure for switch test 3 P1 Pressure Port This is the connection for the internal sensor P1 4 P2 Pressure Port This is the connection for the internal sensor P2 5 RTD Probe Connector This connector is where the RTD prob
38. the pressure switch terminals The polarity of the terminals does not matter Then connect the pump to the calibrator and the pressure switch 3 Make sure the vent on the pump is open Zero the calibrator if necessary Close the vent after zeroing the calibrator 4 The top of the display will read CLOSE P1 ST CLOSE psi 0 000 CONFIG LOWER MORE 5 Apply pressure with the pump slowly until the switch opens Important NOTE In the switch test mode the display update rate is increased to help capture changing pressure inputs Even with this enhanced sample rate pressurizing the device under test should be done slowly to ensure accurate readings 6 Once the switch is open OPEN will be displayed bleed the pump slowly until the pressure switch closes P1 ST OPEN psi 30 000 CONFIG LOWER MORE 7 Atthe top ofthe display it will now read SW OPENED AT and give you the pressure that the switch opened at SW OPENED AT psi 30 000 NEW TEST NEXT DONE 15 8 Press the NEXT option to view when the switch closed and the dead band SW CLOSED AT psi 29 595 NEW TEST NEXT DONE SW DEADBAND psi 0 405 NEW TEST NEXT DONE 9 Press the NEW TEST option to clear the data and perform another test 10 Press the DONE option to end the test and return to the standard pressure setting Example P1 ST will return to P 1 Important NOTE
39. u PROBE TYPE NEXT DONE There are four probe types to select from P 100 385 P100 392 100 IS and CUSTOM Use the SELECT option to selectthe desired probe type and the DONE option to store the change and return home Note The default probe type is PT100 385 SELECT RTD PROBE TYPE P100 385 SELECT DONE 2 4 7 Damping Damping can be turned ON or OFF using the Damping menu selection When damping is ON the calibrator displays an running average reading of ten measurements The calibrator makes approximately 3 readings per second 3 Measuring Pressure To measure pressure connect the calibrator using an appropriate fitting Choose a pressure setting for the display being used The calibrator is equipped with two internal sensors and many optional external sensors EPMs are available Be sure to choose the sensor based on working pressures and accuracy Note Pressure sensors may be damaged and or personnel injury may occur due to improper application of pressure Please refer to the table of ranges and resolutions at the back of this manual for information on overpressure and burst pressure ratings Vacuum should not be applied to any gauge pressure sensor The calibrator display will indicate OL when an inappropriate pressure is applied If OL is observed on any pressure display the pressure should be reduced or vented immediately to prevent damage or possible personnel injury OL is displayed
40. when the pressure exceeds 12096 of the nominal range of the sensor or when a vacuum in excess of 2 PSI is applied on gauge range sensors Figure 5 Use the ZERO key to zero the pressure sensor when vented to atmospheric pressure Important NOTE To protect sensor integrity and prevent damage to the sensor the calibrator will display OL overload when the applied pressure exceeds 120 of the full scale calibrated range ofthe sensor Important NOTE To ensure accuracy of the calibrator it is critical to zero the calibrator before a device is calibrated 11 4 12 3 1 Media Compatibility The calibrator utilizes a media isolated sensor to prevent sensor contamination Whenever possible clean dry air is the media of choice If that is not always possible make sure that the media is compatible with Nickel Plated Brass and 316 Stainless Steel 3 2 Measuring Pressure with External Modules The calibrator provides a digital interface to External Pressure Modules These modules are available in various ranges and types including gauge vacuum differential and absolute The modules work seamlessly with the calibrator Simply plug them into the interface and select EXT external sensor Since the interface between the calibrator and the module is digital all the accuracy and display res
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