User manual Digital Temperature Indicator
Contents
1. 940630 n Reference resistors EI Rhigh 360 0000 Ohm Rlow 50 0000 Ohm Sensor 1 id 9401000 1 RO 1 0000000e 02 A 3 9080200e 3 B 5 8020000e 07 C 4 2735000e 12 Sensor 2 id 9401100 RO 1 0000000e 02 A 3 9080200e 3 B 5 8020000e 07 C 4 2735000e 12 Start time 12 00 00 End time 12 01 18 n Start date 30 06 1994 End date 30 06 1994 Time between log 1 seconds Measuring mode SEN Resolution 0 001 sensor 1 Ohm sensor 2 Ohm sensor sensor 2 C O 109 2104 109 1902 23 23 599 ay 109 2100 109 1906 23 23 600 2 109 2104 109 1906 23 23 600 In this menu it is possible to use lt Page Up gt lt Page Dowr gt to scroll faster through the file 8 6 Sensor coefficients calibration This menu contains the possibility to show enter and calibrate the used coefficients for the connected sensors Show Current coefficients Enter new coefficients Calibrate Sensors The equations for the coefficients are Below 0 C R R It A t B t2 C t 100 43 Above 0 C R t R A t B t Show current coefficients In the show current coefficients menu it is possible to show sensor 1 2 or both sensors in turn which will be shown in the following way Sensor 1 PT100 coefficients Serial number for sensor 048 02 01 953610 RO 1 000000e 02 A 3 908020e 03 B 5 802000e 07 C 4 273500e 12 lt ESC gt to quit Enter new coefficients 24 32 11 062. MODE T1 T2 Use the softkey lt Reset SELECT gt to scroll between following types of read out MODE SELECTION MENU READ OUT MODE MODE DIFF T1 T2 DIFF T1 T2 0 05 C MODE T1 MAX T1MAX 23 66 C T1 MIN TIMIN 23 64 C MODE T2 MAX T2MAX 23 61 C T2 MIN T2MIN 23 59 C MODE DIFF MAX DIFFMAX C207 AC DIFF MIN DIFFMIN 0 03 C Use the softkey lt Menu ENTER gt to select the specific read out mode 5 3 3 Reset Use the softkey lt RESET Select gt in order to reset the peak values in the selected difference mode 100975 05 11 06 2001 13 32 5 3 4 Units In order to change the unit of the read out you must press the softkey lt MENU Enter gt 2 times The following message will be shown in the display Use the softkey lt Reset SELECT gt to scroll between following types of units UNIT SELECTION MENU READ OUT MODE UNIT C UNIT F UNIT Q R1 109 210 Q R2 109 191 Q UNIT K Use the softkey lt Menu ENTER gt to select the specific read out unit Please note that read out in Q has one more digit than specified in the resolution set up 14 32 11 06 2001 100975 05 5 3 5 Resolution In order to change the resolution on the read out you must press the softkey lt MENU Enter gt 3 times The following message will be shown in the display RESOLUTION 0 01 Use the softkey lt Reset SELECT gt to scroll between following types of resolution RESOLUTION SELECTION MEN
3. All signal cables have to be connected to the top plate grounding on the back plate Power and communication cables have to be connected on the back plate Top plate connection Back plate connections SENSOR 1 ANALOG OUT 1 2 x 4 PCS BATTERIES TYPE AA SENSOR 2 gt ANALOG OUT 2 gt N A O NAL an SENSOR 1 ANALOG OUT 8 32 Connections for sensors where channel 1 is shown Please note that the LEMO connector is only available on the DTI 1000 model Connections for analog out channel 1 and 2 for the 2 temperature readings and only available on the DTI 1000 model Ground terminal for shield on the signal cables Power input for mains adapter 9VDC 200mA Connector for RS232C interface 11 06 2001 100975 05 4 Labels Shows name and address of manufacturer Manufacturer logo Instrument name Unambiguous statement of the instrument name Model specification Unambiguous statement of the instrument model Serial number Unambiguous statement of the instrument erature Indicator TERK wa CALIBRATION INSTRUMENTS ave Ce Type DTI 1000 Volt Hz 8 x 15V DC m Serial No XXXXXX XXXXX AMETEKDENMARKAS GYDEVANG3234 DK 3450ALLER D L TEL 45 48168000 FAX 45 48168080 WWW AMETEK COM TCI in Denmark Year 2000 33 Power 1 8 W 1
4. 2 0 030 C 99 9883 OHM NO lt F2 gt Enter new logdata lt F3 gt Log True lt F4 gt Calculate lt F5 gt Edit logdata lt ESC gt aborts Following softkeys are defined lt F2 gt Enter new logdata file restarts the calibration lt F3 gt Log True enters the true temperature in C here lt F4 gt Calculates the coefficient when there are at least 4 logs lt F5 gt Edit logdata removes unwanted log value lt ESC gt Abort leaves the calibration routine Use lt F3 gt for each temperature log wanted for calibration 26 32 11 06 2001 100975 05 The edit logdata menu is for removal of unwanted logs where the defined softkeys are shown in it s own menu frame Logdata TEST1 CLO Sensor 1 Ohm Read True Deviation 0 020 0 020 C 0 000 C 0 020 C 100 000 100 000 C 100 000 C 0 000 C 199 998 199 998 C 200 018 C 0 020 C When the calibration points are measured use lt F4 gt to calculate the new coefficients C will only be shown for logs below 0 C Leave the menu with lt ESC gt and enter the calculated coefficients in the menu Enter new coefficients 8 7 Recalibrate Calibration information This menu will show the calibration date if the program is installed on the hard disk It is only possible to re calibrate the DTI when the program is executed from the floppy disk Please see section 9 for calibration 100975 05 11 06 2001 27 32 8 8 Quit About Connection and Temperature unit
5. I A tt B t C t 100 t7 Above 0 C R Ry A A t B t 5 3 7 Light By pressing the softkey lt Light gt 1 time the light will be switched on in the display for about 10 seconds By pressing the softkey 2 times in a row the light will stay on The light is switched off by pressing the softkey again 16 32 11 06 2001 100975 05 6 Technical specifications The specifications are for both DTI 100 and DTI 1000 unless otherwise specified Electrical data Measuring input Measuring range Linearity Calibration accuracy Temperature drift Temperature resolution DTI 1000 DTI 100 Units Supply Battery life Light ON Light OFF Analog out DTI 1000 only Range Accuracy Temperature drift Scaling EMC directive 89 336 EEC Mechanical data Weight Dimensions H W D Operating conditions Temperature range Humidity range Protection class Storage temperature 100975 05 2 channels for 4 wire PT100 sensors 0 to 360 Q 200 to 750 C 0 014 C 1 digit excl sensors at 23 C 10 ppm 0 01 C excl sensors 0 003 C C 0 1 0 01 0 001 0 1 0 01 C F QIK 8 pcs 1 5 V type AA batteries or 9 V mains adapter 10 hours 50 hours 0 5 to 3 75 V 2mV 0 05 of reading 0 3mV C 0 C OV and 5mV C as default can be changed in software EN50081 1 1992 EN50082 1 1992 2 2 kg 195 mm 135 mm 225 mm 0 to 50 C 0 to 90 IP20 2
6. This menu is used for leaving the program showing info text and re establishing of lost connection for communication Quit About Connection Temperature unit Use the Connection menu to re establish contact to the DTI if the communication has been aborted while running Use Temperature unit menu to change the unit for readout on screen and in files The menu can be either C Celsius F Fahrenheit or K Kelvin Use the lt T gt or lt J gt keys to select a new unit In the DTI F and K are defined as follows F 9 5 C 32 K C 273 15 8 9 Error messages Following messages may appear in the program Message DTI is either not ready or not connected No such file s are found FATAL ERROR in DTI Enter new PT100 coefficients manually Illegal coefficients in file download is aborted for the sensor Battery low communication can continue for a while Device timeout Previous analog data is not available 28 32 Meaning Action Check cables and DTI The specified files do not exist The downloaded coefficients can not be retrieved through the communication try again The calibration routine of the sensor has not been performed correctly The battery low signal has been detected Change battery or use mains adaptor Printer is not connected correctly to LPT1 Printer is not ready for printing or out of paper The analog scaling information cannot be retrieved through the co
7. below It is also possible to supply the DTI from a mains adapter at the connector shown in the figure above The mains adapter can be supplied by AMETEK 100975 05 11 06 2001 11 32 5 3 1 On Off Start the DTI by activating the softkey lt ON Off gt Following message will be shown in the display SELF CALIBRATION AND TESTING 1 This information states that the internal references and the sensor coefficients are checked If the coefficients are incorrect an error message will occur which is described in section 7 3 The next message shown in the display will be SELF CALIBRATION AND TESTING 2 In this step the A D converter is calibrated which approximately takes 1 second When the calibration is over following message will be shown SELF CALIBRATION AND TESTING 3 Test 3 is an internal voltage reference check which approximately takes 4 seconds When all the test have succeeded the DTI will show the model type and last calibration date in the display AMETEK DTI 1000 CAL DATE 940630 After this the input values will be shown in the display in the same format as before the DTI was shut off last time If there is no input signal or it is outside the measuring range a hyphen will be shown for that specific channel 12 32 11 06 2001 100975 05 5 3 2 Reading In order to change the reading you must press the softkey lt MENU Enter gt 1 time The following message will be shown in the display
8. resistors Enter the date format as YYMMDD Connect the two reference resistors to the sensor inputs as shown on the figure section 5 2 1 Enter the value of the two reference resistors Determine new resistors Current maximum resistor 360 000 Ohm Current minimum resistor 0 000 Ohm Default resistors for DTI 0 0 Ohm amp 360 0 Ohm No Enter reference resistor value in sensor input 1 55 0000 Ohm Enter reference resistor value in sensor input 2 355 0000 Ohm lt ESC gt aborts Press lt Enter gt to accept The default selection should only be used if the previous calibration went wrong Now the calibration will show the determination of the internal reference resistors calculated from the two connected input values 30 32 Calculated resistor New maximum resistor value 360 0180 New minimum resistor value 49 9975 lt ESC gt aborts Press lt ENTER gt to accept Press lt ENTER gt when the reading is stable 0 0005 Q Confirm the taken sample by pressing lt ENTER gt again If the taken sample is at the limit of the stability criteria press lt ESC gt to make a new When the calibration is finished the software downloads the new reference resistor values to the DTI which will take about 1 second Check the reading of the connected references in measure menu or the display The values must not differ more than 0 001 Q for the calibration to be accepted 11 06 2001 100975 05 9
9. 0 to 60 C 11 06 2001 17 32 7 Maintenance and display error messages 7 1 Maintenance The DTI does not require specific maintenance before or after use The user may carry out the following procedures him self Cleaning surfaces Use alcohol or water and a soft cloth Re calibrate or change Use the software in order to re calibrate change the coefficients for sensors sensor coefficients see section 8 6 Re calibration of DTI Use the calibration routines in the software to re calibrate references or analog out the DTI see section 9 to 9 4 7 2 Changing batteries The batteries are placed in the two battery holders shown in the figure below The battery holders can be pulled out by pressing the locks on both sides simultaneously 18 32 11 06 2001 100975 05 7 3 Display and error messages If the DTI detects an error while running it will automatically appear in the display Following error messages can occur Display message Meaning Action Battery voltage low BATTERY LOW Change batteries PRESS ANY KEY section 7 2 No sensor connected to input or measuring input 1111 11122 outside range 1 1 C Downloaded coefficients rejected Check calibration CONSTANT ERRORS Default sensor coefficients used are DEFAULT VALUES RO 100 000000 A 3 90802E 3 B 5 80200E 7 C 4 27350E 12 Press any key to continue 100975 05 11 06 2001 19 32 8 Software 8 1 Installation The program must be runned in D
10. 00975 05 11 06 2001 Front plate foil Front plate foil Display foil Front plate foil Front plate sticker 9 32 5 Operation 5 1 Operating area Both of the DTI models are intended for use in areas which meet the following Temperature range 0 C 32 F to 50 C 122 F Humidity 0 to 90 Protection class IP20 WARNING Do not use in hazardous areas 5 2 1 Connection of sensors The sensor should be connected to the terminals as shown in the figure below Use the ground terminal see the figure Overview section 3 pos 3 for the cable shields in order to reduce noise The connector type to extra connector on DTI 1000 is LEMO FFA 1S 304 CNAC 10 32 11 06 2001 100975 05 5 2 2 Connections for analog out DTI 1000 onl The voltage output should be connected to a measuring device as shown in the figure below A Use the ground terminal see the figure Overview section 3 pos 3 for the cable shields in order to reduce noise 5 2 3 Power supply The DTI is supplied with 8 1 5 Volt batteries as standard When the battery voltage is low following message will appear BATTERY LOW PRESS ANY KEY This message will only appear one time after the DTI has been switched on and is removed by pressing the key lt Menu Enter gt or lt Reset Select gt The DTI is still able perform accurate measurements a little while longer The batteries are placed in the two battery holders shown in the figure
11. 100975 05 11 06 2001 3 32 2 Introduction The DTI Digital Temperature Indicator system is designed for fast and traceable calibration and is ready for use The system is portable Please read this manual carefully before use to obtain maximum value of your DTI system The DTI is prepared for re calibration by your local calibration laboratories and all necessary instructions for the re calibration is stated in this manual The DTI is not designed for continuously data logging recording since there is no guarantee for missed log values during the data logging Definitions and terminology used in this manual a Text inside lt gt refer to soft keys on the DTI panel or keys on the PC keyboard Text with big letters indicate the activated function if there are more than one function example lt ON Off gt b Display text on the DTI is shown inside rounded frames C Screen menus in the DTI software are shown inside edged frames WARNING Read this manual before use Do not use in hazardous area Do not connect rated voltages to earth with a maximum above 50V to the input terminals 4 32 11 06 2001 100975 05 3 Functionality Overview 1a Sensor1 connections 1b Sensor 1 connections DTI 1000 only 2a Sensor 2 connections 2b Sensor 2 connections DTI 1000 only 3 Ground terminal for cable shields 4 Display with 2 20 characters 5 Softkeys 6 RS232C connector 7 Powe
12. 2001 100975 05 After every download of coefficients to the DTI the user should validate that the accurate data is present in the internal memory of the DTI This is done by 1 Pressing lt MENU ENTER gt on the DTI until the menu pops up CH1 sensor number RO 1 0000000e 02 2 Check the sensor number and coefficient A by comparing with the data on the PC 3 Press lt RESET SELECT gt in order to change to next coefficient and check 4 Continue with this procedure until all coefficients have been verified In the enter new coefficients menu it is possible to take the calculated coefficients in the calibrate sensors menu enter the values from the keyboard or read the values from a file which has been saved earlier Furthermore it is possible to download default coefficients if a calibration is not possible Please be aware of the reduced accuracy when using this procedure Calculated values Values from keyboard Values from file Default coefficients lt ESC gt aborts Remarks 1 When using the Default coefficients the IPTS 68 coefficients will be downloaded 2 In order to use the ITS 90 coefficients please open Values from file and download the file named IEC751 90 100975 05 11 06 2001 25 32 Calibrate sensors In the calibrate sensors menu it is possible to calibrate one or both sensors The logdata is saved in separate files specified by the user before starting extension CLO When m
13. 4 Calibration of analog out DTI 1000 onl Use following procedure for recalibration of the two analog outputs 1 Select the menu analog out 2 Enter the date format as YYMMDD 3 Connect the voltmeter to channel 1 as shown in the figure section 5 2 2 Read the voltage and enter the measured value for channel 1 4 Connect the voltmeter to channel 2 as shown in the figure section 5 2 2 Read the voltage and enter the measured value for channel 2 Lowest possible voltages Enter Analog output channel 1 Enter Analog output channel 2 lt ESC gt aborts 5 Connect the voltmeter to channel 1 again and enter the measured signal for channel 1 6 Connect the voltmeter to channel 2 again and enter the measured signal for channel 2 Highest possible voltages Enter Analog output channel 1 Enter Analog output channel 2 lt ESC gt aborts 7 Enter the analog output scaling Default 5mV C OV 0 C Analog fixpoints Gain Offset lt ESC gt aborts 100975 05 11 06 2001 31 32 9 32 32 Accept the calculated output scaling factors shown on the screen Output 1 factor X Output 2 factor X Output 1 factor Y Output 2 factor Y Gain in mv C Offset in C lt ESC gt aborts lt Enter gt to continue 4 876 4 876 585 142 585 142 5 000 0 000 When the calibration is finished the software downloads the new scaling factors for the analog outputs to
14. ER gt to start the program 2 Confirm port selection with lt ENTER gt or change it by pressing lt SPACE gt and using lt T gt or lt 4 gt 3 When the program is in contact with the DTI the ABOUT message will be shown on the screen If the program can not communicate with the DTI the message DTI is not ready or not connected will appear Please check DTI and connection before trying to establish contact in the CONNECTION menu Both messages will be removed by pressing any key The main menu consists of Setup Analog out scaling DTI 1000 only Measurements Continuously measurements to screen or log file Sensor Alteration of sensor coefficients through calibration or manual entry Recalibrate Showing of calibration date for the DTI Quit About Quit info text re establishing of communication or altering of temperature unit The bottom line will show type and serial no for the connected DTI and the Help menu softkey lt F1 gt which pop up a help text for the selected menu 8 4 Setup Analog output DTI 1000 onl The setup menu is for altering the analog output scaling for both channels where current values will also be shown Modify Analog fixpoints Old Offset Old Gain New Offset New Gain raS 5 mV C lt ESC gt aborts press lt ENTER gt to accept Default is Offset 0 C OV Gain 5 mV C When the values have been entered into the program download the values to the DTI which approxi
15. It is possible to connect the shields from the cables to the cabinet in order to reduce the influence of noise Both models are supplied with RS232 and software in order to have the possibility of saving the measured data and to recalibrate the DTI or the sensors B gt Note If the temperature is outside the range set by gain and offset the value of the analog output signal is undefined 6 32 11 06 2001 100975 05 3 2 Indicators The DTI only uses the display for all indications The display has 2 20 characters which will swap between read out values or menu selection when requested Please see section 5 3 1 to 5 3 6 for possible display read outs Please note that the error messages will also be showed in the display see section 7 3 Digitat Temperature Indicator T1 23 65 C T2 23 60 C 3 3 Touch pad There are 4 soft keys on the touch pad panel where 2 of the soft keys have a double function Oa Switch ON or switch OFF the DTI Please press down the key at least 0 2 coe seconds in order to switch on the unit ARE MENU toggles between the menus Mode Unit Resolution Sensor ENTEN ENTER enters the menu function selected with the RESET SELECT key E RESET resets peak values for both channels SEEST SELECT toggles between the selected menu functions a Switch on or switch off the light The light can be activated for 10 seconds or LIGHT Te constantly 100975 05 11 06 2001 7 32 3 4 Connections
16. OS It is not recommendable to execute the program in a DOS window under WINDOWS The software program can be installed on a standard PC AT with min 640 Kb RAM 1 372 floppy disk 1 hard disk 1 RS232C COM port 1 parallel port and a VGA colour monitor 1 Insert the disc in drive A or B 2 Type A or B and press lt ENTER gt 3 Type DTI_INST and press lt ENTER gt 4 Press lt ENTER to continue installation and lt ESC gt to leave 5 Confirm or specify source drive for installation and press lt ENTER gt 6 Confirm or specify target drive and directory for installation and press lt ENTER gt 7 Select the language by using the arrow keys and press lt ENTER gt 8 The program installation on the specified harddrive is now shown on the screen 9 Press lt ENTERY to leave the installation program 10 Type DTI in order to start the program The program will consist of 1 execution file 1 text file 1 help text file 1 data file for port setup and 2 batch files placed in the root and in the specified directory as the execution file The execution file is protected to prevent erasing by a simple DOS command 8 2 Connections Before the program is started please connect the DTI to the PC The RS232C connector on the DTI is shown in figure below Use only the AMETEK cable Part No 60V991 for connection 20 32 11 06 2001 100975 05 8 3 Starting the program 1 Type DTI and press lt ENT
17. U READ OUT MODE DTI 100 1000 RESOLUTION DTI 1000 only RESOLUTION 0 001 T1 23 651 T2 23 599 C DTI 100 1000 RESOLUTION 0 1 Use the softkey lt Menu ENTER gt to select the specific read out unit The sample period is dependent on the selected resolution which can be longer than sample rate to the display if a resolution above 0 1 is selected The sample rates for the different resolutions are shown below Resolution 0 1 0 01 0 001 Sample period 1s 2s 10s Please note that read out in Q has one more digit than specified in the resolution set up 100975 05 11 06 2001 15 32 5 3 6 Checking sensor coefficients In order to check the sensor ID and coefficients on the DTI press the softkey lt MENU Enter gt 4 times The following message will be shown in the display SENSOR 1 9402244 RO 1 0000000E 02 Use the softkey lt Reset SELECT gt to scroll through the coefficients example with both sensors using default coefficients SENSOR 1 9402244 RO 1 0000000E 02 SENSOR 2 9402246 RO 1 0000000E 02 SENSOR 1 9402244 SENSOR 2 9402246 A gt 3 9080200E 03 A 3 9080200E 03 SENSOR 1 9402244 SENSOR 2 9402246 B 5 8020000E 07 B 5 8020000E 07 SENSOR 1 9402244 C 4 2735000E 12 SENSOR 2 9402246 C gt 4 2735000E 12 Use the softkey lt Menu ENTER gt to leave this menu The coefficients are used in the equations Below 0 C R Ry
18. User manual Digital Temperature Indicator DTI 100 1000 Copyright 2001 AMETEK DENMARK A S Table of contents 100975 General information Introduction Functionality overview 3 1 Functional description 3 2 Indicators 3 3 Touch pad 3 4 Connections Labels Operation 5 1 Operating area 5 2 1 Connection of sensors 5 2 2 Connections for analog out DTI 1000 only 5 2 3 Power supply 5 3 1 On Off 5 3 2 Reading 5 3 3 Reset 5 3 4 Units 5 3 5 Resolution 5 3 6 Checking sensor coefficients 5 3 7 Light Technical specifications Maintenance and display error messages 7 1 Maintenance 7 2 Changing batteries 7 3 Display and error messages Software 8 1 Installation 8 2 Connections 8 3 Starting the program 8 4 Setup Analog output DTI 1000 only 8 5 Measurements 8 6 Sensor coefficients calibration 8 7 Recalibration Calibration information 8 8 Quit About Connection and Temperature unit 8 9 Error messages Calibration 9 1 Recommended equipment 9 2 Starting the calibration 9 3 Calibration of the reference resistors 9 4 Calibration of analog out DTI 1000 only 05 11 06 2001 Page 1 32 2 32 11 06 2001 100975 05 1 General information This manual is only effective for following products DTI model 1000 DTI model 100 DTI software The products are manufactured by AMETEK DENMARK A S GYDEVANG 32 34 DK 3450 ALLER D DENMARK TEL 45 48 16 80 00 FAX 45 48 16 80 80
19. cified file with the extension DLO WARNING When using an already existing file name this file will be subjected to overwriting destroyed It is possible to specify the resolution of the data in the logfile which is changed by pressing lt SPACE gt Specify time HH MM SS and date DD MM YY for start and end and the time between the measurements The specified end time has to be later than the start time in order to create the file Log file data Filename example DLO Resolution in temperature mode 0 001 Use lt Space gt to change mode Start time 12 00 00 End time 12 01 18 Start date 30 06 94 End date 30 06 94 Time between log 1 seconds lt ESC gt aborts The measuring starts when TIME BETWEEN LOG has been entered Logging to file Status Log file is being created Measured Sensor 1 23 651 C Measured Sensor 2 23 599 C Start Current time 12 00 01 The program pop up a message when the logging is over NOTICE If the logging of data is started after the time indicated the time stated in the log file is not going to indicate the actual starting time The contents of the file can be selected in the display logdata menu which can be shown on the screen or printed out to a printer The contents and format will be the same no matter if file screen or printed paper is selected 100975 05 11 06 2001 23 32 Displaying example DLO Serial number DTI1000 942600 Calibrated
20. easuring temperatures over 0 C it is necessary to calibrate by at least 3 temperatures When measuring temperatures under 0 C it is necessary to calibrate by at least 3 positive temperatures and 1 negative temperature It is recommended that the calibration temperatures are chosen so that the normal operating range lies within the temperatures which have been used for calibration It is possible to continue working on calibration data which has been saved in a file This is done either by typing the name of the file in which previous calibration data has been saved in Log file setup menu or simply by pressing lt ENTER gt in the same menu and choose the relevant file from the list of log files The log file set up automatically shows the sensor ID for the used sensor which can be altered by the user Enter a stable criteria suitable for the measuring set up The test option is an extra protection for bad logging Log file setup Serial number for sensor 1 9401000 Stable time min 5 Maximum deviation C 0 02 Stability test Yes Press lt Return gt to accept use arrows to move The logdata menu will show this information in the measuring window in the following way Calibrating Sensor 1 Log filename test1 CLO Stable criteria 0 020 C during 5 0 Sensor 2 Log filename test2 CLO Stable criteria 0 020 C during 5 0 min Temperature Resistance Stable Sensor 1 0 020 C 100 0078 OHM NO Sensor
21. mately takes half a second Please note that the analog span is limited to 0 5 to 3 75 Volt 100975 05 11 06 2001 21 32 8 5 Measurements The measurements menu consists of single measurement and optional setup a continuous measurement to a log file and an overview menu of previous measurements Measure Options Datalog Display logdata Measure The measure menu shows the latest reading in the display in the read out modes specified in the options menu Use the lt F2 gt softkey to reset the peak readings Measuring Sensor 1 s651 Sensor 2 23 599 Maximum sensor 23 660 Minimum sensor 23 642 Maximum sensor 2 23 608 Minimum sensor 2 23 590 Difference TI lt T2 0 052 Maximum Difference 0 070 Minimum Difference 0 034 Time since reset 00 00 18 lt F2 gt resets peak values lt ESC gt lt ENTER gt to quit The options menu consists of the read out modes which should be displayed in the measure menu where the save option gives an opportunity of saving the setup as default OPTIONS Current values Peak Sensor 1 Peak Sensor 2 Sensor difference Peak difference Time since reset Resolution Save on exit lt Space gt toggles lt ESC gt to quit Use space to alter the setting and the arrows lt gt lt T gt to move up and down 22 32 11 06 2001 100975 05 8 5 Measurements cont Datalog This menu picks up the measurements and stores them in an user spe
22. mmunication try again 11 06 2001 100975 05 9 Calibration WARNING The re calibration should be performed by authorized personnel only Read section 9 1 to 9 3 before the re calibration is started 9 1 Recommended equipment Following equipment is necessary for reference recalibration 1 50 60 resistor with a traceable accuracy better than 10 ppm 2 350 360 resistor with a traceable accuracy better than 10 ppm 3 Digital voltmeter range 1 to 4 Volt DC accuracy better than 1mV 4 DTI Software program on floppy disk 9 2 Starting the calibration The calibration can only be executed from a floppy disk described in following procedure 1 Insert the disk in the floppy drive A or B 2 Select the drive by typing A or B lt ENTER gt 3 Start the program by typing DTI lt ENTER gt 4 Confirm port selection with lt ENTER gt or change it by pressing lt SPACE gt and using lt T gt or lt l gt 5 When the program is in contact with the DTI the ABOUT message will be shown on the screen 6 Select the menu Recalibrate The menu now consists of three additional parts New Cal date Reference resistors and Analog out Old Cal date New Cal date Reference resistors Analog out 100975 05 11 06 2001 29 32 9 3 Calibration of the reference resistors Use following procedure for recalibration of the internal reference resistors 1 2 Select the menu reference
23. r inlet for mains adapter 8 Analog out for channel 1 DTI 1000 only 9 Analog out for channel 2 DTI 1000 only 100975 05 11 06 2001 5 32 3 1 Functional description The DTI is used for measuring inputs from two PT100 sensors in the range 0 to 360 Q 200 to 750 C The two sensors are connected to the connectors in the top plate The input signal is compared to the two internal resistor references from which the input signal can be determined The DTI operates with a 2 20 character display which continuously read out the two inputs The input value can be shown as the actual read value for both sensors the peak values for sensor 1 or 2 the differential value for the two sensors or as the differential peak value for the two sensors The input value can be shown in Q C F or K selected by the user The resolution in temperature can be 0 1 or 0 01 for both models and also 0 001 for DTI 1000 The 4th order polynomial coefficients can be inspected by the user and changed in the software program The DTI 1000 also has analog output which corresponds to the temperature value for the input where the signal range is from 0 5 to 3 75 volt The gain and offset can be altered by the user in the software program The power supply is made by eight 1 5 Volt batteries or a mains adapter optional extra Use only mains adapter supplied by AMETEK in order to comply with the requirements in EN50081 1 1992 and EN50082 1 1992
24. the DTI which will take about 1 second 11 06 2001 100975 05
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