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CONNECTION FOR TX MEASUREMENTS FROM 3 OR 4-WIRE
TRANSMITTER WITH 24 V POWER SUPPLY.

3.5 - TX MEASUREMENT

NOTE

: we define as TX all the 2, 3 or 4 -wire transmitters with 20

mA output capability.
The instrument generates a 24 V (max 25 mA) auxiliary
power supply for the transmitters in subject.

CONNECTION FOR TX MEASUREMENTS FROM 2-WIRE
TRANSMITTER WITH 24 V POWER SUPPLY.

TX

+

-

Maximum current: 25 mA

+

Maximum current: 25 mA

TX

-

PWS

Measure

+

-

+

M20-e-3.p65

7/9/01, 2:40 PM

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Summary of Contents for MEMOCAL 2000

Page 1: ...170 MAN MEM 2D1 01 0 r USER MANUAL MEMOCAL 2000 M20 e 0 p65 7 9 01 2 39 PM 1...

Page 2: ...3 5 TX MEASUREMENT 29 3 6 mV MEASUREMENT 33 3 7 OHM MEASUREMENT 37 3 8 TC SIMULATION 38 3 9 RTD SIMULATION 41 3 9 mA GENERATION 42 3 10 TX SIMULATION 46 3 11 mV GENERATION 51 3 12 OHM SIMULATION 56 SE...

Page 3: ...nly 2 To avoid electric shock do not use the AC adapter close to steam generator or water basin 3 Before connecting the AC adapter to the power line verify the integrity of the adapter case If the cas...

Page 4: ...CAL 2000 is a versatile portable hand held calibrator developed to solve two different and coexisting customer needs field calibration maintenance and laboratory calibration mainte nance quality test...

Page 5: ...rature from 10 to 60 C Humidity from 20 to 85 RH non condensing Protections WATCH DOG circuit for automatic restart 1 2 2 INPUTS A THERMOCOUPLE MEASUREMENT Type B E J K L N Ni Ni 18 Mo PLII R S T U W...

Page 6: ...C 51 C to 100 C 101 C to 250 C 251 C to 1530 C 1531 C to 2300 C 0 C to 100 C 101 C to 1090 C 1091 C to 2310 C 0 C to 1096 C 1097 C to 2250 C 2251 C to 2315 C Standard range table when the engineering...

Page 7: ...5 0 F 2 4 F 1 2 F 0 8 F 0 5 F 0 4 F 0 3 F 0 5 F Max Error CJ excl 0 4 F 0 7 F 0 8 F 0 5 F 0 5 F 0 4 F 0 4 F 1 1 F 5 2 F 0 9 F 0 7 F 0 7 F 0 7 F 0 8 F 0 6 F 0 6 F 1 7 F 0 6 F 1 6 F 1 8 F TC type E R S...

Page 8: ...eference accuracy the accuracy is shown as a percent of the specified span Range selection Automatic or manual Input impedance 10 W for mA input 10 MW for mV inputs 500 kW for V input Square root extr...

Page 9: ...R S T U W W3 and W5 keyboard programmable Engineering unit C or F keyboard programmable Output impedance 100 W Calibration according to IPTS 68 or ITS 90 programmable Standard ranges For ranges accur...

Page 10: ...RATION Ranges see table below Range selection Automatic or manual Output impedance 100 W for mV outputs 0 5 W for V output Maximum load for mA output 500 W Quadratic signal generation programmable Rea...

Page 11: ...am can encompass a free number of soke and ramp simulations measurements and stand by steps 1 5 SPECIAL FUNCTIONS Backlight LED backlighting with manual ON and automatic 30 seconds shut OFF Self diagn...

Page 12: ...eries and leather bag MEM 200 0RS 100 Hand held calibrator with built in RS 232 interface connection cable for PC AC adapter 4 Ni Cd rechargeable batteries and leather bag OPTIONAL EQUIPMENTS CODE Des...

Page 13: ...13 2 1 FRONT PANEL DESCRIPTION SECTION 2 INSTRUMENT CONFIGURATION M20 e 2 p65 7 9 01 2 40 PM 13...

Page 14: ...d to set all the numerical values It sets the sign of the numerical value for numeri cal data entry in generation and for scalable values It inserts the decimal point for numerical data entry in gener...

Page 15: ...alue with a gradient of 1 LSD for each 1 2 second by depress ing it once the generated output will increase of 1 LSD During a selection procedure it is used to move the cursor forward During measureme...

Page 16: ...desired select YES and depress the FUNC push button The display will show Where SERIAL LINK To enable the serial communication DIGITAL INP To enable the logic inputs NONE Both options are disabled 2...

Page 17: ...push button go to the following field AD XX BR XXXXX XBUS PA XXXX 2 3 2 DIGITAL INPUTS WARNING to avoid damage to the instrument pin 1 6 and 9 must be ever disconnected DIGITAL INPUT 1 During a sequen...

Page 18: ...ay will show the following Select the derired standard for TC and RTD measure and genera tion Depressing the FUNC push button DEFAULT ENG UNIT C F The configuration procedure is completed and the inst...

Page 19: ...e increased or decreased of 1 LSD 3 By pushing continuously s or t push button the generated value will change with a rate equal to 2 LSD second 4 When typing a value an error occurs push the DEL push...

Page 20: ...and to generate a value up to 21 000 mA GENERAL NOTES ON MEASUREMENTS 1 During a measurement the maximum and minimum data hold functions are enabled These functions are activated automatically by meas...

Page 21: ...ccordance to the selected temperature standard IPTS 68 or ITS 90 see para graph 2 3 INSTRUMENT CONFIGURATION CONNECTION FOR TC MEASUREMENTS USING INTERNAL RJ For all TC measurements it is suggested to...

Page 22: ...nction compensation type external or internal e g INT NOTE A When the internal cold junction compensation has been selected the instrument uses an internal RTD to compensate the ambient temperature fr...

Page 23: ...displays the measured value in engineering units C shows the selected engineering unit 3 3 RTD MEASUREMENTS NOTE The instrument will operate in accordance to the selected temperature standard IPTS 68...

Page 24: ...NC push button the display will show the following where MEAS shows that the instrument is performing a measurement 68 shows that the selected standard is the IPTS 68 Pt100 shows that the input sensor...

Page 25: ...pe Push the FUNC push button The display will show Where 20 200 show the selectable 20mA 200mA fix ranges Note the 200 mA is limited at 130 mA When a fixed range is selected the instrument will use a...

Page 26: ...ter can be lower than the value assigned to L RANGE EU reverse read out Push the FUNC push button the cursor will go automatically to the lower line By the numerical keyboard set the desired read out...

Page 27: ...ction MEAS RNG L mA 3 000 EU Push the FUNC push button the display will show the following By the numerical keyboard set the desired initial scale value For Example 2 it is equal to 4 000 mA NOTES 1 T...

Page 28: ...read out limits 20000 counts The instrument will start to measure and for Example 2 if a 7 mA signal is applied to the input terminal the display will show NOTES 1 The instrument will automatically se...

Page 29: ...l the 2 3 or 4 wire transmitters with 20 mA output capability The instrument generates a 24 V max 25 mA auxiliary power supply for the transmitters in subject CONNECTION FOR TX MEASUREMENTS FROM 2 WIR...

Page 30: ...equal to 4 000 mA NOTES 1 The value assigned to H RANGE mA must be higher than the value assigned to L RANGE mA parameter 2 The value assigned to H RANGE EU parameter must be different from the value...

Page 31: ...the REV MOD push button the scaling function and to display the measured value in mA For the previous indication the instrument will show 2 During TX measurement the instrument is able to measure and...

Page 32: ...3 For the read out in eng units the number of decimal figures is free with respect of the read out limits 20000 counts The display will show the following By the numerical keyboard set the desired fin...

Page 33: ...Push the FUNC push button the display will show the following Where NON RANGEABLE allows to select a mV measurement without scaling with a read out in mV RNG L allows to select a mV input with linear...

Page 34: ...ming a measurement AUTO shows that the autoranging function is selected mV is the engineering unit XXXXX shows the measured value 3 6 2 RNG L mV measurement with linear read out scaling The RNG L sele...

Page 35: ...e read out in eng units the number of decimal figures will be equal to the decimal figure programmed in L RNG EU The instrument will start to measure and for Example 1 if a 3 V signal is applied to th...

Page 36: ...e FUNC push button NOTES 1 The input range may contain negative values 2 The displayed range will only be represented with positive numbers The display will show the following By the numerical keyboar...

Page 37: ...NTS CONNECTION FOR OHM MEASUREMENTS The short circuit between terminals B and C may be made A close to the instrument in this case the measured value is equal to the line resistance plus the sensor re...

Page 38: ...Ni 100 Ohm MEAS Ohm XXXXXXX W 3 8 TC SIMULATION NOTE The instrument will operate in accordance to the selected temperature standard IPTS 68 or ITS 90 see paragraph 2 3 INSTRUMENT CONFIGURATION CONNECT...

Page 39: ...ay will show the following By depressing the s or t push buttons select the desired TC type e g J NOTE when ITS 90 is selected the TC type U and L are not available so that the instrument will show th...

Page 40: ...4 0 F to 176 0 F for TC type J K T E R S U L PLII from 0 C to 80 C or from 32 F to 176 F for TC type B N Ni Ni18 Mo W W3 and W5 By the numerical keyboard set the desired compensation value if no valu...

Page 41: ...AN RTD SENSOR Push OUT push button the display will show the following By pushing s or t push button select the RTD sensor Push the FUNC push button the display will show By pushing s or t push button...

Page 42: ...cted standard is the IPTS 68 Ni100 shows that the simulated sensor is an RTD Ni 100 XXXXX it shows the simulated value C shows the selected engineering unit Type the value to be generated Push the FUN...

Page 43: ...push the FUNC push button The display will show the following Where NON RANGEABLE allows to select a mA generation without scaling with a read out in mA RNG L allows to select a mA output with read o...

Page 44: ...from the value assigned to L RANGE EU When conditions 1 or 2 are not satisfied the instrument will reject the new value showing the 0 and it will maintain the cursor on the rejected parameter 3 The v...

Page 45: ...UAD function Push the FUNC push button the display will show the following By the numerical keyboard set the desired initial scale value For Example 2 it is equal to 4 000 mA NOTES 1 The value assigne...

Page 46: ...le read out scaling it is possible to enable disable by the REV MOD push button the scaling function and to display the generation value in mA Push the FUNC push button the display will show By the nu...

Page 47: ...t a mA input with square root extraction on the measured value and programmable read out scale in engineering units 3 10 1 NON RANGEABLE TX simulation without scaling Example 1 it is desired to simula...

Page 48: ...to have on the device and on the calibrator the same read out scaling Pushing s or t push button select the RNG L function Push the FUNC push button the display will show the following By the numerica...

Page 49: ...function and to display the measured value in mA 3 During mA measurement the instrument is able to measure and display up to 5 more than the upper programmed value or 5 less than the lower programmed...

Page 50: ...negative values 2 The displayed range will only be represented with positive numbers The display will show the following By the numerical keyboard set the desired final scale value For Example 3 it is...

Page 51: ...ue in mA 3 During mA measurement the instrument is able to measure and display up to 5 more than the upper programmed value or 5 less than the lower programmed value 3 11 mV GENERATION CONNECTION FOR...

Page 52: ...the resulting output will be quadratic 3 11 1 NON RANGEABLE mV generation without scaling Pushing s or t push button select the NON RANGEABLE output type The display will show Where 20 200 2000 20000...

Page 53: ...gned to H RANGE EU parameter must be different from the value assigned to L RANGE EU When conditions 1 or 2 are not satisfied the instrument will reject the new value showing the 0 and it will maintai...

Page 54: ...out scaling Selecting the RNG QUAD option the value to be generated will be set in engineering unit and it will be linear while the resulting output will be quadratic Example 2 with a linear read out...

Page 55: ...C push button NOTES 1 The instrument will automatically select the output range containing the two programmed values L RANGE mV and H RANGE mV with the maximum resolution 2 For the read out in eng uni...

Page 56: ...must be higher than 100 mA lower than 2 mA and having the polarity shown in the figure otherwise the instrument could show an error message see chapter ERROR MESSAGES 3 WIRE CONNECTION FOR OHM SIMULAT...

Page 57: ...the FUNC push button the display will show the following where OUT shows that the instrument is performing a simulation Ohm shows that the instrument is performing an W simulation W shows the engineer...

Page 58: ...xecute the Selection Sequence described for generation Up to 50 program steps can be further divided in one or more routines of different length 4 1 HOW TO CONSTRUCT AND STORE A NEW SEQUENTIAL FUNCTIO...

Page 59: ...the program step should be necessarily a soak segment 2 When TIME is different from 00 00 it is possible to set the END VAL different from the Initial Value In this case the program step will be a ram...

Page 60: ...les the sequential function routine execution EDIT enables the EDIT mode of the selected routine DEL delete the selected routine When it is desired to delete the selected routine select the DEL option...

Page 61: ...ogram step between step a and step b Pushing the FUNC push button and reach the program step b Push the Set up Ins push button The instrument renumbers the following steps and start the selection sequ...

Page 62: ...g a program it is possible 1 To go to the next step by pushing the FUNC push button 2 To come back to the previous step by pushing SCRL BACK push button 3 To stop temporarily the routine execution by...

Page 63: ...mA can produce the following indication SECTION 5 ERROR MESSAGES 5 1 LOAD ERRORS During OHM simulation a reverse measuring current causes the MISCON indication on the display Revert the measuring wir...

Page 64: ...detected it is possible to ignore the error indication by pushing the DEL pushbutton but the accuracy of the instrument is not assured Fatal errors code 6 7 and 8 When a fatal error is detected the i...

Page 65: ...ype can be only ALKALINE 1 5 V cell The AC adapter has an output equal to 7 5 V with a maximum current equal to 1 2 A The AC adapter is capable to supply the instrument and simultane ously to recharge...

Page 66: ...charge current is about 50 mA In trickle charge mode a complete recharge can require up to 12 hours for Ni Cd cells 20 hours for Ni MH cells The optional Desk top stand see fig 4 can provide a quick...

Page 67: ...G 1 After a battery replacement set the battery type selector see fig 1 in accordance with the battery type inserted in the instrument 2 Don t mix old batteries with new ones 3 Don t use mixed battery...

Page 68: ...Ero Electronic s r l Via E Mattei 21 28100 Novara Italy Tel 39 0321 481111 Fax 39 0321 481112 An Invensys Company M20 e 6 p65 7 9 01 2 43 PM 68...

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