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741B/743B - PCE Instruments

1. v v B Gir Ge 2 Pressure Module ege m ES TC E ki34c eps Figure 34 Calibrating a Pressure to Current P I Transmitter 93 741B 743B Users Manual a Black Measure mA Ce Input 0 1mV 0 10mV 0 100mV 1 DN 0 1V 0 10V Output 4 20 mA Source mV or V 94 Figure 35 Calibrating a mV to Current Transmitter ki35c eps Documenting Process Calibrator Quick Guide to Applications al 2 z E OJOO deele wes 35 f SES Measure Frequency ki36c eps Figure 36 Checking a Vortex Sheeding Flowmeter 95 741B 743B Users Manual Communicating with a PC Model 743 Only You can upload and download procedures and saved results to a PC An IBM PC compatible personal computer Microsoft Windows and Fluke DPC TRACK software or a qualified Fluke partner s software are required A custom serial interface cable for the 743B is included with DPC TRACK Refer to the DPC TRACK Users Manual for further instructions Maintenance Note Additional maintenance instructions including a calibration procedure and a l
2. Differential ki12c eps Figure 12 Connections for Measuring Pressure 33 741B 743B Users Manual Measuring Temperature Using Thermocouples The calibrator supports eleven standard thermocouples each identified with an alpha character E N J K T B R S C L or U Table 5 summarizes the ranges and characteristics of the supported thermocouples To measure temperature using a thermocouple proceed as follows 1 Attach the thermocouple leads to the appropriate TC miniplug then to the TC input output as shown in Figure 13 One pin is wider than the other Do not try to force a miniplug in the wrong polarization Note If the calibrator and the thermocouple plug are at different temperatures wait one minute or more for the connector temperature to stabilize after you plug the miniplug into the TC input output 1 If necessary press sd amp for MEASURE mode 34 Press a J The display prompts you to select the thermocouple type Select the desired thermocouple type using the or C followed by ENTER J If necessary you can change between C or F Temperature Units as follows a Press few b Press the Next Page softkey twice c Use the and keys to move the cursor to the desired parameter Then press either ENIER J or the Choices softkey to choose a setting for that pa
3. esseeneeeenennennn Replacement Parts ccseccceesecceceseeeeeeeseceeeeseneeseseeseeseseeeeseseneeeeneneesseseeeeseseesenenes Le EE iere tee Q DC Voltage Measurement AA AC Voltage Measurement enne nre e neret DC Current Measurement eene enne enne nnne nnne rennen nnne enne Resistance Measurement nennen nennen enne Continuity Testing tero eet etre cere eter He iei CE oi ee eid Frequency Measurement essen eene nennen nennen DC Voltage ei eR DC Current Output Resistance Sourcing iig eec iere cesa Festo PA ree bus oe cipe vede Ue deor Frequency Sourcing eene nennen nennen enne ns Temperature Thermocouples cccescceecesecceeeseeceeeneeeeeeeseneeseseeeeesseeeeseseaeeseneeees Temperature Resistance Temperature Detectors AA Loop Power Supply 3 1 rete ED Ep ERE E gege ico Top and Bottom Limits of Ranges with Auto Range On General Specifications tied eileen ji M iv List of Tables Table Title 1 Summary of Source and Measure Functions ssseesseeseeesieeieeeieerestreetnstinetnnstnnsrnnennenne 2 Input Output Jacks and Connectors nene 3 Bes c E 4 Battery Lt se R 5 Thermocouple Types Accepted AAA 6 RTO Types AGCOpled WEE 7 Simultaneous MEASURE SOURCE Functions with Loop Power Disabled 8 Simultaneous MEASURE SOURCE Func
4. Warning A TC Miniplug 30V maximum to L gj12f eps Figure 13 Measuring Temperature with a Thermocouple 36 Documenting Process Calibrator Using Measure Mode Using Resistance Temperature Detectors terminal configuration The calibrator accepts RTD RTDs measurement inputs in two three or four wire connections as shown in Figure 15 A four wire The calibrator accepts RTD types shown in Table 6 configuration provides the highest measurement RTDs are characterized by their resistance at 0 C precision and two wire provides the lowest 32 F which is called the ice point or H The most measurement precision common R is 1000 Most RTDs come in a three Table 6 RTD Types Accepted RTD Type Ice Point R Material o Range C Pt100 3926 1000 Platinum 0 0039260 C 200 to 630 Pt100 385 1000 Platinum 0 003850 C Ni120 672 1200 Nickel 0 006720 C Pt200 385 2000 Platinum 0 003859 C Pt500 385 5000 Platinum 0 003859 C Pt1000 385 10000 Platinum 0 003859 C Cuto 427 9 0350 Copper 0 004270 C Pt100 3916 1000 Platinum 0 0039160 C ber IEC 751 Standard 10Q 25 C 37 741B 743B Users Manual To measure temperature using an RTD input proceed as follows 1 If necessary press bosat for MEASURE mode Press 45 twice so that Select RTD Type shows Press ENTER Press or to select a 2 3 or 4 wire connection 2 3 Pre
5. 41 741B 743B Users Manual 5 Press ENTER 6 Use the numeric keypad to enter the 100 of scale value 100 Value 7 Press ENTER J 8 Set Mode to V 9 Press ENTER 10 Press the Done softkey Percent of scale remains in effect until you press the Scale softkey again or change to another measurement function Set scaling Mode to Eng Units to return to normal operation Customizing mV Input Units The calibrator works with any measurement accessory that converts an input parameter to a linear millivolt output Use the Custom Units feature for this purpose After you name and scale a custom measurement unit the display shows both the new scaled custom unit and the actual measured parameter Proceed as follows to set up a custom unit 42 1 When measuring the millivolt output of the accessory press the Custom Units softkey 2 Enter the name of the custom units up to four characters for example PH for pH using the alphanumeric entry window then press ENTER 1 3 Press the 10 or x10 softkey as many times as you need to select the proper scaling then press ENTER While Custom Units are active the symbol shows on the display to the right of the custom unit Once you have programmed the custom measurement unit the custom unit is available for calibration procedures in split screen MEASURE SOURCE mode To cancel Custom Units press the Custom Units softkey again A War
6. Pressurize the pressure line with the pressure source to the desired level as shown on the display If desired you can change pressure display units to psi mHg inHg mH O inH O inH O 60 F ftH O bar g cm or Pa Metric units kPa mmHg etc are shown in Setup mode in their base units Pa mHg etc Change the pressure display units as follows a Press seul b Press Next Page twice C Press _ENIER with the cursor on Pressure Units d Select the pressure units with the or keys e Press ENTER f Press the Done softkey 51 741B 743B Users Manual Pressure Module LOKE 743B DOCUMENTING PROCESS CALIBRATOR Measure 0 00amv FLUKE 700P05 ERO 13 475psi eil JOH g Bm Ek 8 z H z S S z C ex at em 9 Le OOOO OOOO Cf foe mA v n RTD loar RCE MEAS Co 30V 30v MAX D NEN ji id s E Of i5 a AE LER a a ki19c eps Figure 19 Connections for Sourcing Pressure 52 Documenting Process Calibrator Using Source Mode Simulating Thermocouples Note Refer to Measuring Temperature earlier in the manual for a table of data relating to thermocouple types
7. area To erase a character press the Back Space softkey To erase the whole string press CLEAR ZERO 6 Press or P to select a character then press ENTER J Use the numeric keypad if you want to enter a number 7 Repeat step 6 until you are satisfied with the ID string appearing in the window 8 Press the Done softkey 9 Press the Done softkey or to exit Setup 27 741B 743B Users Manual Using Measure Mode Note To achieve best noise rejection and highest accuracy performance do not use the battery eliminator and tie all three common jacks together The operating mode i e MEASURE SOURCE is shown in a reverse video bar on the display If the calibrator is not in MEASURE mode press until MEASURE is shown You must be in MEASURE mode to change any of the MEASURE parameters Measurement Ranges The calibrator normally changes to the appropriate measurement range automatically The lower right side of the display shows either Range or Auto Range depending on the range status Auto Range switch points are shown in the specifications at the 28 end of this manual When you press the key the range is locked Press it again to cycle to and lock on the next higher range Press it and hold it for two seconds to revert to Auto Range If the range is locked overrange inputs produce a display of In Auto Range out of range inputs Measuring Electrical Par
8. 300 C If the instrument calibration procedure requires you to enter either the measurement value or source value by hand at each step press the User Value softkey for user entered values Custom Units lets you define your own units such as PH See Creating Custom Measurement Units earlier in this manual for an example When you use custom units the A symbol appears next to the value on the display and in results Press the Done softkey after you have programmed your custom unit The Strategy is the number of test points and which test points are performed rising and falling in percent of scale Our example uses five points 0 25 50 75 and 100 rising only Rising is indicated by the up arrow on the display Change to another test strategy by pressing L_ENZER J on this line A list of strategies appears from which to choose Select one then press Done 15 When you finish selecting the calibration parameters the display appears as follows MEASURE 0 Value 4 000 mA 100 Value 20 000 m Tolerance 0 50 Delay US SOURCE TC Type K 0 Value 100 0 C 100 Value 300 0 C Test Strategy at User Custom Abor Value Units BUNE gj45s eps 69 741B 743B Users Manual 16 Press the Done softkey to accept the calibration parameters The display changes to MES SURE 4 011 mA SOURCE TC Type K 100 0 C Int Ref 29 4 C ITS 90 2 97 Gri Auto Manual Abort
9. DPC TRACK Software utility version with interface cable 9 pin male female straight through PN 943738 Documenting Process Calibrator Standard Equipment AC20 Test Clip 2 Red and 2 Black Test Leads Test Probe 1 Red and 1 Black OI eps Figure 1 Standard Equipment 741B 743B Users Manual Users Manual BP7217 Nickel Cadmium Battery Pack BC7210 Battery Charger Figure 1 Standard Equipment cont OI eps Safety Information This calibrator is designed and tested in accordance with CAN CSA C22 2 No 1010 1 92 ANSI ISA 82 01 1994 UL3111 and EN610 10 1993 Use the calibrator only as specified in this manual otherwise the protection provided by the calibrator may be impaired A Warning identifies conditions and actions that pose hazards to the user a Caution identifies conditions and actions that may damage the calibrator or the equipment under test Documenting Process Calibrator Safety Information Symbols used on the calibrator and in this manual are explained in Figure 2 741B 743B Users Manual CAUTION see explanation in manual Common LO Input equipotentiality Equipment protected throughout by DOUBLE INSULATION or REINFORCED INSULATION Conforms to relevent European Union directives Conforms to relevent Canadian Standards Association directives Overvoltage Installation Category II per
10. Many ranges and types of pressure modules are available from Fluke See Accessories near the back of this manual Before you use a pressure module read its Instruction Sheet The modules vary in how you use them how you zero them what types of process pressure media are allowed and accuracy specification Figure 11 shows gage and differential modules Differential modules also work in gage mode by leaving the low fitting open to atmosphere To measure pressure attach the appropriate pressure module for the process pressure to be tested as described in the module s Instruction Sheet Proceed as follows to measure pressure A Warning To avoid a violent release of pressure in a pressurized system shut off the valve and slowly bleed off the pressure before you attach the pressure module to the pressure line Documenting Process Calibrator Using Measure Mode Differential gj11f eps Figure 11 Gage and Differential Pressure Modules Caution To avoid mechanically damaging the pressure module never apply more than 10 ft Ib of torque between the pressure module fittings or between the fittings and the body of the module Always apply appropriate torque between the pressure module fitting and connecting fittings or adapters To avoid damaging the pressure module from overpressure never apply pressure above the rated maximum printed on the pressure
11. accordance with the instructions in this manual If the calibrator is faulty send a description of the failure with the calibrator Pressure modules do not need to accompany the calibrator unless the module is faulty also Be sure to pack the calibrator securely using the original shipping container if it is available Send the equipment postage paid and insured to the 98 nearest Service Center Fluke assumes no responsibility for damage in transit A Fluke 741B or 743B calibrator covered by the warranty will be promptly repaired or replaced at Fluke s option and returned to you at no charge See the back of the title page for warranty terms If the warranty period has expired the calibrator will be repaired and returned for a fixed fee If the calibrator or pressure module is not covered under the warranty terms contact an authorized service center for a price quote for repair To locate an authorized service center call Fluke using any of the phone numbers listed below or visit us on the World Wide Web USA and Canada 1 800 44 FLUKE 1 800 443 5853 Europe 31 402 678 200 Japan 81 3 3434 0181 Singapore 65 276 6196 Anywhere in the world 1 425 356 5500 Documenting Process Calibrator Maintenance Replacement Parts Standard Equipment near the front of this manual and Accessories later in this manual for model or Table 9 lists the Fluke part number of each user part numbers of standard a
12. softkey As Found data are the test results showing the condition of a transmitter before it is calibrated Additionally the Model 743 runs tasks procedures that are developed using a host computer and compatible application software Caution Calibration of pulsed or multiplexed RTD instruments with settling times of less than 100 ms may result in errors and is not recommended Generating As Found Test Data The following example shows how to generate as found data for a thermocouple temperature transmitter The way you set up the template for the procedure is similar for Delta P and 1 Pt and 2 Pt Switch tests 66 In this case the calibrator is simulating the output of a thermocouple and measuring the resulting current from the transmitter Other transmitters use this same method Just go back to MEASUREMENT or SOURCE mode and change the operating parameters before you press As Found 1 Connect the test leads to the instrument under test as shown in Figure 23 The connections simulate a thermocouple and measure the corresponding output current If necessary press dis for MEASURE mode Press ma Press boiie for SOURCE mode Press Lan J Sex 9r m ON Use the and keys to select the thermocouple type then press _ENZER jJ 7 Enter a source value for example 100 degrees then ENTER jJ Documenting Process Calibrator Calibrating a Process Instrument 8 Press for ME
13. 0 01 0 02 0 02 0 02 110 000 0 01 0 04 0 02 0 04 1 1000 ka 0 02 0 5 0 03 0 5 11 000 ka 0 03 5 0 04 5 Temperature Coefficient 0 01 of f s C in the ranges 10 to 18 C and 28 to 50 C Maximum and Minimum Current through Source Resistance 11Q Range 3 mA dc max 0 1 mA dc min 1100 Range 3 mA dc max 0 1 mA dc min 1 1 KQ Range 3 mA dc max 0 01 mA dc min 11 ko Range 1 mA dc max 0 01 mA dc min Common Mode Error 0 008 f s Common Mode Volt Maximum Input Voltage 30V dc 109 741B 743B Users Manual Frequency Sourcing Range 1 and 2 Year 0 00 Hz to 10 99 Hz 0 01 Hz 11 00 Hz to 109 99 Hz 0 1 Hz 110 0 Hz to 1099 9 Hz 0 1 Hz 1 100 kHz to 21 999 kHz 0 002 kHz 22 000 kHz to 50 000 kHz 0 005 kHz Waveform Choices Zero symmetric sine or positive square wave 50 duty cycle Amplitude 0 1 to 10V pk Amplitude Accuracy 0 Hz to 1099 Hz 3 of output 0 5 f s 1 1 kHz to 10 9 kHz 10 of output 0 5 f s 11 kHz to 50 kHz 30 of output 0 5 f s Maximum Input Voltage 30V dc 110 Temperature Thermocouples Documenting Process Calibrator Specifications Temperature TCs Models 741B and 743B Type Range C Measure C Source C 1 Year 2 Year 1 Year 2 Year E 2500 200 1 3 2 0 0 6 200 to 100 0 5 0 8 0 3 200 to 100 0 5 0 8 0 3 600 to 1000 0 4 0 6 0 2 N 200 to 100 1 0 1 5 0 6 100 to 900 0 5 0 8 0 5 900
14. 10 in H O Note 2 5 kPa to 0 to 10 000 psi 69 000 kPa LoopPower 24 or 28V 22 mA max Note Use an external hand pump or other pressure source as a pressure stimulus for the source pressure function Documenting Process Calibrator Introduction The ability to automatically log up to 8 000 data points Model 743B only A serial computer interface for uploading downloading tasks lists and results Model 743B only Automatic calibration procedures for transmitters and limit switches using split screen MEASURE SOURCE mode Transmitter mode in which the calibrator can be configured to emulate the functions of a process instrument Built in calculator with square root function and accessible registers containing measure and source values An optional bar code wand for entering alphanumeric characters Model 743B only Measuring features Damping smoothing of the last several readings with display indicator of damped status Display of measurements in engineering units percent of scale square law inputs or custom units The ability to capture and display minimum and maximum measured levels e Sourcing features The ability to set source values to engineering units percent of scale or square law outputs Manual and automatic stepping and an output ramp feature for testing limit switches Trip detect is either a 1V change or a continuity status change Open or Short from one ramp increme
15. MEASURE mode or selects dc voltage in SOURCE mode 16 D key Turns the power on and off 16 Documenting Process Calibrator Operating Features Display Figure 7 shows the features of a typical display The display shown is MEASURE mode Near the top of the display is Source Off This is the area of the display that shows what is happening in the other mode SOURCE or MEASURE The other parts of the display are as follows e Status Bar shows the time and date if set in Setup mode and shows the status of Loop Power Battery Save and Backlight Timeout all of which are set in Setup mode The low battery and backlight on annunciators also appear here e Mode Indicator Shows whether the calibrator is in MEASURE or SOURCE mode In split screen MEASURE SOURCE mode there is a Mode Indicator for each window Measured Value Shows the measured value in your choice of engineering units or percent of scale Range Status Shows whether Auto Range is on and what range is currently being used Custom Units Indicator Shows that the displayed units are custom The original engineering units of the measure or source function are not displayed The value may also be scaled Secondary Value Shows the measure or source value in original engineering units whenever scaling or custom units are active 17 741B 743B Users Manual Loop Power Annunciator Time and Date Display Status Bar Mode Indi
16. RTD and measure Q functions are not available see Table 8 later in this manual 48 Connect the calibrator in series with the instrument current loop as Figure 18 shows Proceed as follows to source loop power 1 Press for Setup mode 2 Note that following Loop Power Disabled is highlighted Press WIER J 3 Use the or arrow keys to select Enabled 24V or Enabled 28V 4 Press _ENIER 5 Press the Done softkey Documenting Process Calibrator Using Source Mode d J SJO oeooo0g ki18c eps Figure 18 Connections for Supplying Loop Power 49 741B 743B Users Manual Sourcing Pressure The calibrator provides a source pressure display function that requires the use of an external pressure hand pump Use this function to calibrate instruments that require a pressure source or differential pressure measurement See Figures 19 and 34 for information about that application Many ranges and types of pressure modules are available from Fluke See Accessories near the back of this manual Before you use a pressure module read its Instruction Sheet The modules vary in how you use them how you zero them what types of process pressure media are allowed and accuracy specification To use the source pressure display see Figure 19 and proceed as follows 50 A Warning To avoid a violent release of press
17. SOURCE mode or you can use the calibration routine provided when you press the As Found softkey The following two softkeys displayed in MEASURE SOURCE mode are for use in calibrating a process instrument e As Found which lets you set up a calibration routine to obtain and record as found data e Auto Step which lets you set up the calibrator for auto stepping as previously described Instructions for calibrating a process instrument follow 63 741B 743B Users Manual Table 7 Simultaneous MEASURE SOURCE Functions with Loop Power Disabled Measure Function Source Function dc V mA Freq Q TC RTD Pressure dc V e e e e e e e mA aM e e e e e ac V EE D e e e e e Frequency 220 Hz a D e e e e e Low Frequency lt 20 Hz I Continuity rs i e e e e e TC M RTD EMI R s R 3W RTD aM e e e e e 4W RTD ETE e e e e e Pressure i Il e e e e e 64 Documenting Process Calibrator Simultaneous Measure Source Table 8 Simultaneous MEASURE SOURCE Functions with Loop Power Enabled Measure Function Source Function dc V mA Freq Q TC RTD Pressure dc V e e e e e e mA H e e ac V e e e Frequency 220 Hz e TC e e e Pressure e 65 741B 743B Users Manual Calibrating a Process Instrument When the calibrator is in simultaneous MEASURE SOURCE mode a built in calibration routine is activated when you press the As Found
18. Test Test gj46s eps 17 You now have the choice of starting an automatic test or stepping through the test points manually Press the Auto Test softkey to have the calibrator run through the tests automatically Abort gets you out of the calibration procedure The tests begin at the zero point sourcing the correct temperature a voltage and measuring the corresponding current from the transmitter As soon as a measurement has settled and been captured the calibrator moves to the next step Because the calibrator waits for the 70 18 measurement to stop changing the Auto Test works correctly for instruments with built in damping The error of the expected measured value is shown in the top left of the measure window The calibrator moves to the remaining set of points For temperature and electrical parameter calibration the points are done automatically If you are sourcing pressure the calibrator pauses at each step for you to adjust the pressure source When the tests are complete an error summary table such as the following is displayed SOURCE MEASURE ERROR 1 00 0 C 3 304mA 150 0 C 7 865 mA e n c 12 053 m 250 0 C 18 034m 3 0 0 C 2Z0 175m Prev Next Abort Page Page Done gj47s eps Documenting Process Calibrator Calibrating a Process Instrument 19 20 In the results summary test failures are highlighted An adjustment is required in this example becau
19. achieve the best noise rejection use battery power and tie all three common jacks together Documenting Process Calibrator Specifications DC Voltage Measurement Models 741B and 743B Range Resolution of Reading of Full Scale 1 Year 2 Year 110 mV 1 uN 0 025 0 015 0 05 0 015 1 1V 10 uV 0 025 0 005 0 05 0 005 11V 100 uV 0 025 0 005 0 05 0 005 110V 1 mV 0 05 0 005 0 1 0 005 300V 10 mV 0 05 0 005 0 1 0 005 Temperature Coefficient 0 001 of rdg 0 0015 f s C in the ranges 10 to 18 C and 28 to 50 C Input Impedance 5 MQ Common Mode Error 0 008 f s Common Mode Volt Maximum Input Voltage 300V rms 103 741B 743B Users Manual AC Voltage Measurement Models 741B and 743B Frequency Range of Reading Number of Counts 1 Year 2 Year 20 Hz to 40 Hz 2 10 2 10 40 Hz to 500 Hz 0 5 5 0 5 5 500 Hz to 1 kHz 2 10 2 10 1 kHz to 5 kHz 10 20 10 20 Ranges 1 1000V 11 000V 110 00V 300 0V rms Resolution 11 000 counts in all ranges except 300V 3 000 counts on 300V range Input Impedance 5 MQ and 100 pF Temperature Coefficient 10 of specification C in the ranges 10 to 18 C and 28 to 50 C Input Coupling ac Maximum Input Voltage 300 V rms Minimum Input Voltage 0 5V above 1 kHz Specifications apply for 10 to 100 of voltage range 104 Documenting Process Calibrator Specificatio
20. data collected to that point is saved Documenting Process Calibrator Memory Operations After you enter your choice of duration you can see how much memory that duration would consume See the Memory Used and Memory Remaining percentage figures on the display Memory Used indicates the percentage of available memory that will be used by the specified log Memory Remaining indicates the percentage of memory that will remain unused after logging is complete Press the Done softkey The display changes to Source 100 0 C 4 004mA Auto Range D 7 5 15 22 30 mA nd DA Start Abort Logging gj54s eps 10 11 Note the LOG annunciator next to MEASURE Press the Start Logging softkey to start taking data The calibrator will continue storing data points until the duration has elapsed or until you press the Done softkey Either way of terminating logging causes the calibrator to save the data as a memory item that can be uploaded to a host computer running compatible application software 83 741B 743B Users Manual Recording Min and Max Measurements You can set the display to record and show the maximum and minimum readings Min and Max readings are always undamped even if Dampen is On Press the More Choices softkey twice then press the Min Max softkey to turn on this feature Press the key to reset the Min Max registers Press the Min Max softkey again to revert to the normal display T
21. four wire RTDs Resistance Temperature Detectors Jacks for sourcing or measuring current measuring resistance and RTDs and supplying loop power Output jacks for sourcing voltage resistance frequency and for simulating RTDs Documenting Process Calibrator Operating Features FLUKE 7438 DOCUMENTING PROCESS CALIBRATOR ki05f eps Figure 5 Input Output Jacks and Connectors 13 741B 743B Users Manual Keys Figure 6 shows the calibrator keys and Table 3 explains their functions The softkeys are the four unmarked blue keys just below the display Softkey functions are defined by the labels that appear above the softkey during operation Softkey labels and other display text are shown in this manual in bold type for example Choices ooo 0000 ki OOO C 9 eT ki06f eps Figure 6 Keys 14 Documenting Process Calibrator Operating Features Table 3 Key Functions No NN OO oy B amp R ow Name key mA key key Softkeys key 2 key RID key key key Description Cycles the calibrator through MEASURE SOURCE and MEASURE SOURCE modes Selects mA current measure or source function For loop power on off go to the Setup mode Enters and exits Setup mode to modify operating parameters Perform the function defined by the label above each key on the
22. module To avoid damaging the pressure module from corrosion use it only with specified materials Refer to the printing on the pressure module or the pressure module instruction sheet for the acceptable material compatibility 31 741B 743B Users Manual 32 Connect a pressure module to the calibrator as shown in Figure 12 The threads on the pressure modules accept standard 1 4 NPT pipe fittings Use the supplied 1 4 NPT to 1 4 ISO adapter if necessary Press for MEASURE mode Press amp J The calibrator automatically senses which pressure module is attached and sets its range accordingly Zero the pressure module as described in the module s Instruction Sheet Modules vary in zeroing procedures depending on module type You MUST perform this step before you execute a task that sources or measures pressure 5 If desired you can change pressure display units to psi mHg inHg mH O inH O inH O 60 F ftH O bar g cm or Pa Metric units kPa mmHg etc are shown in Setup mode in their base units Pa mHg etc Change the pressure display units as follows a b C Press few Press Next Page twice Press ENTER or the Choices softkey with the cursor on Pressure Units Select the pressure units with or Press _ENTER J Press Done Documenting Process Calibrator Using Measure Mode Valve Gage doe Module Isolation VA EE
23. the external reference temperature the calibrator corrects all voltages to compensate for this new reference junction temperature 53 741B 743B Users Manual Simulating RTDs Note Refer to Table 6 for information about RTD Resistance Temperature Detector types supported by the calibrator Connect the calibrator to the instrument under test as shown in Figure 21 Proceed as follows to simulate an RTD Resistance Temperature Detector 54 If necessary press for SOURCE mode Press until the select RTD type display is showing Press the or keys followed by _ENZER to select the desired RTD type Enter the temperature you want to simulate as prompted by the display then press _ENZER jJ Documenting Process Calibrator Using Source Mode FLUKE 743B Doug 120 0 C Color depends G on type of TC Ne Int Ref 25 6 C ITS 30 3 686mV l SOOO s HES TC Miniplug ki20c eps Figure 20 Connections for Simulating a Thermocouple 55 741B 743B Users Manual RTD Transmitter MEAS A Cer Lu S gj2if eps Figure 21 Connections for Simulating an RTD 56 Sourcing in Percent of Scale This feature lets you scale the output in accordance with the input requirements of a particular process instrument s response Percent of scale works for linear responding transmitters or square root responding tra
24. to 1300 0 6 0 9 0 3 J 210 to 100 0 6 0 9 0 3 LE 0 4 100 to 800 0 3 0 4 0 2 0 3 800 to 1200 0 5 0 8 0 2 0 3 K 200 to 100 0 7 1 0 0 4 0 6 100 to 400 0 3 0 4 0 3 0 4 400 to 1200 0 5 0 8 0 3 0 4 1200 to 1372 0 7 1 0 0 3 0 4 T 250t0 200 1 7 25 0 9 200 to 0 0 6 0 9 0 4 0 6 0 to 400 0 3 0 4 0 3 0 4 111 741B 743B Users Manual Temperature Thermocouples cont Type Range C Measure C Source C 1 Year 2 Year 1 Year 2 Year B 600 to 800 1 3 2 0 1 0 1 5 800 to 1000 1 0 1 5 0 8 1 2 1000 to 1820 0 9 13 0 8 12 R 20 to 0 2 3 2 8 1 2 1 8 0 to 100 1 5 22 1 1 1 7 100 to 1767 1 0 1 5 0 9 14 S 20 to 0 2 3 2 8 1 2 1 8 0 to 200 1 5 2 1 1 1 1 7 200 to 1400 0 9 1 4 0 9 1 4 1400 to 1767 14 17 1 0 1 5 c otos 0 6 0 9 0 6 0 9 800 to 1200 0 8 1 2 0 7 1 0 1200 to 1800 1 1 1 6 0 9 1 4 1800 to 2316 2 0 3 0 1 3 2 0 L 200 to 100 0 6 0 9 0 3 0 4 100 to 800 0 3 0 4 0 2 0 3 800 to 900 0 5 0 8 0 2 0 3 112 Documenting Process Calibrator Specifications Temperature Thermocouples cont Type Range C Measure C SS C 1 Year 2 Year 1 Year 2 Year 200 to 0 0 6 0 9 0 6 0 to 600 0 3 0 4 0 4 Sensor inaccuracies not included Accuracy with external cold junction for internal junction add 0 2 C Resolution 0 1 C Temperature Scale ITS 90 or IPTS 68 selectable Compen
25. 0 2 0 to 360 0 5 0 8 0 2 0 4 Sensor inaccuracies not included Resolution 0 1 C Temperature Coefficient 0 02 C C in the ranges 10 to 18 C and 28 to 50 C Maximum Input Voltage 30V Maximum Input Current for RTD Source 100 RTDs 8 mA dc 1000 1200 RTDs 3 mA dc 2002 10002 RTDs 1 mA dc For two and three wire RTD measurements add 0 4 C to the specifications d 115 741B 743B Users Manual Loop Power Supply Models 741B and 743B 24 Volt 28 Volt 5 5 Short circuit protected Maximum Current 22 mA Maximum Input Voltage 30V dc 116 Documenting Process Calibrator Specifications Top and Bottom Limits of Ranges with Auto Range On Top of Range Bottom of Range 110 mV 110 000 mV 0 000 mV 1 1V 1 10000V 0 10000V 11V 11 0000V 1 0000V 110V 110 000V 10 000V 300V 300 00V 100 00V Range dc V Source 110 mV 110 000 mV 10 000 mV 14V 1 10000V 0 10000V 11V 11 000V 1 1000V Range ohms Measure and Source 110 11 0000 0 0000 1100 110 000 10 000 1 1 ko 1100 00 100 00 11 ko 11 000 ka 1 000 ka 117 741B 743B Users Manual Top and Bottom Limits of Ranges with Auto Range On cont Range Current Measure 22 mA 422 000 mA 0 000 mA 110 mA 4110 00 mA 430 00 mA 22 mA 430 000 mA 0 000 mA Range Frequency Measure 100 Hz 109 99 Hz 1 00 Hz 1 kHz 1099 9 Hz 100 00 Hz 10 kHz 10 999 kHz 1 000 kHz 50 kHz 50 00 k
26. ASURE SOURCE mode The display changes to MEASURE 8 005 mA SOURCE TC Type K 150 0 C Int Ref 24 6 C ITs 30 5 154mWV A M i step am Choices Found 9 Press the As Found softkey followed by the Instrument softkey The display changes to gj42s eps MEASURE 0 Value 100 value Tolerance Delay SOURCE TC Type K 0 Value 77777777 C 100 Value 77777777 C Test Strategy at User Custom Value Units Bgng Abort gj44s eps 10 Enter values for 0 and 100 of 4 0 mA and 20 0 mA respectively Set Tolerance to 0 5 of span Use other values if necessary for your application 67 741B 743B Users Manual FLUKE 7498 cocumennne PROCESS CALIBRATOR 8 005 mA TC Type K 150 0 C Color depends Int Ref A ITS 90_5 154mV on type of TC s Ts More Found 9 ave Choices Original Circuit Wiring Ne Miniplug ki23c eps Figure 23 Calibrating a Thermocouple Temperature Transmitter 68 Documenting Process Calibrator Calibrating a Process Instrument 11 12 13 14 If the process instrument needs more time to settle than the calibrator s normal settling time about 2 seconds at each new stimulus level enter that time in seconds for Delay Use the arrow keys to move the cursor down to enter 0 and 100 values for SOURCE temperature Our example uses 100 C and
27. End Value and Ramp Time 9 To automatically stop ramping if a trip condition is detected set the Trip Detect to Enabled and select Voltage or Continuity as the trip function 12 13 Documenting Process Calibrator Using Source Mode Press the Done softkey Note the RAMP annunciator next to SOURCE at the top of the display Select a low to high ramp or a high to low ramp with the Ramp Up Down softkey To start ramping press the Start Ramp softkey Ramping continues until a trip is detected if enabled the ramp time expires or you press the Stop Ramp softkey 61 741B 743B Users Manual Voltage Trip Detect Trip Relay e Output les En E 9 e Source mA ki22c eps Figure 22 Checking a Relay Output Trip Alarm 62 Documenting Process Calibrator Simultaneous Measure Source Simultaneous Measure Source Use the MEASURE SOURCE mode to calibrate or emulate a process instrument Press so that a split screen display appears as shown below MEASURE 8 005 mA SOURCE TC Type K 150 0 C Int Ref 246 C ITS 80 5 154mWV A MI Found Siep DAVE Choices gj42s eps Table 7 shows the functions you can use simultaneously when Loop Power is disabled Table 8 shows the functions you can use simultaneously when Loop Power is enabled You can use the Step or Auto Step features to adjust the output in MEASURE
28. FLUKE 741B 743B Documenting Process Calibrator Users Manual PN 644788 June 1997 Rev 1 3 98 1997 1998 Fluke Corporation All rights reserved Printed in U S A All product names are trademarks of their respective companies LIMITED WARRANTY amp LIMITATION OF LIABILITY Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service The warranty period is three years and be gins on the date of shipment Parts product repairs and services are warranted for 90 days This warranty extends only to the original buyer or end user customer of a Fluke authorized reseller and does not apply to fuses disposable batteries or to any product which in Fluke s opinion has been misused altered neglected or damaged by accident or abnormal conditions of operation or handling Fluke warrants that software will operate substantially in accordance with its functional specifications for 90 days and that it has been properly recorded on non defective media Fluke does not warrant that software will be error free or operate without interruption Fluke authorized resellers shall extend this warranty on new and unused products to end user customers only but have no authority to extend a greater or different warranty on behalf of Fluke Warranty support is available if product is purchased through a Fluke authorized sales outlet or Buyer has paid the applicable interna tional price Fluke reserves the rig
29. Hz 10 00 kHz 118 General Specifications Display Power Memory Backup Dimensions Weight Altitude Operating Temperature Storage Temperature Humidity Water Dust Protection Safety Warranty Documenting Process Calibrator Specifications 240 by 200 pixel graphic LCD 70 x 58 mm Internal battery pack NiCd 7 2V 1700 mAh Lithium battery 5 years typical lifetime 130 x 236 x 61 mm 5 1 x 9 3 x 2 4 in 1 4 kg 3 Ib 1 oz Up to 2800 meters 9186 ft above mean sea level 10 to 50 C typically to 20 C except for frequency measure and ac voltage measure 20 to 60 C Avoid prolonged use outside the safe operating boundaries shown in the graph on the next page Designed to meet IEC529 IP52 normal operating vacuum used for dust test Designed in accordance with ANSI ISA S82 01 1994 UL8111 CAN CSA C22 2 No 1010 1 92 and EN610 10 1993 See Safety Information near the front of this manual See the WARRANTY inside front cover 119 741B 743B Users Manual RH 40 60 80 100 120 140 Temperature F 20 10 0 30 40 50 60 Temperature C HG T Storage 20 C 60 C SS Normal Operation 10 C 50 C humidity typical gj37f eps Figure 37 LCD Operating Environment Specification 120 A 7 12 20 36 42 4 to 20 ma transmitter simulating 46 A Accessories As found test data 66 As left test data Auto
30. IEC 1010 1 refers to the level of Impluse Gua Voltage protection provided Typical locations include Mains Wall outlets local appliances and PORTABLE EQUIPMENT Recycling gj56f eps Figure 2 Definition of Symbols To protect yourself follow these safety guidelines e Disconnect the power and discharge all high fee voltage capacitors in the equipment under test e Do not use the calibrator if itis damaged Before before testing resistance or continuity you use the calibrator inspect the insulating cover Look for cracks or missing plastic Pay e Inspect the test leads for damaged insulation or particular attention to the insulation surrounding exposed metal Check test lead continuity the connectors Replace damaged test leads before using the calibrator Documenting Process Calibrator Safety Information Do not use the calibrator if it operates abnormally Protection may be impaired When in doubt have the calibrator serviced Select the proper function and range for your measurement Use caution when working above 30V ac rms 42V ac pk or 60V dc Such voltages pose a shock hazard 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 operate the calibrator around explosive gas vap
31. NSEQUENTIAL DAMAGES OR LOSSES INCLUDING LOSS OF DATA WHETHER ARISING FROM BREACH OF WARRANTY OR BASED ON CONTRACT TORT RELIANCE OR ANY OTHER THEORY Since some countries or states do not allow limitation of the term of an implied warranty or exclusion or limitation of incidental or consequential damages the limitations and exclusions of this warranty may not apply to every buyer If any provision of this Warranty is held invalid or unenforceable by a court of competent jurisdiction such holding will not affect the validity or enforceability of any other provision Fluke Corporation Fluke Europe B V P O Box 9090 P O Box 1186 Everett WA 98206 9090 5602 B D U S A Eindhoven The Netherlands 5 94 Table of Contents Jairo Ute tio mL Standard Eouipment AA Safety e Ee E Getting Started Exercise ssssssssssssssesseeeeeeeeennee nennen nnne nnne nene Operating Features ssssssssesseeseeeenen nennen en neret nennen nne enne nnne Input and Output Jack MI cR BIE oen A Setting Up the Calibrator AAA Using the Strap and Bail Charging the Batter Battery Le 3 nc ieee Sa LL LL peda Preserving Battery Le eecccesseeeeeesenceeeneeceeeeseeeeneseneeeeeesenseseeseseseesenseeeeeesesenees Using the Optional Battery Eliminator Selecting the Display Language ssseeseeeeeeseesiesttsitestrerrettnetnntnntnnntenstnnsenneenneen Adjusting the Display Conmt
32. Pressure modules available 100 R Repair 8 output 60 Repair 98 Replacement parts Resistance measuring sourcing Results saving 79 RTD simulating 54 types 34 RTD Resistance temperature Detectors S Saving results Scale softkey for measure 41 temperature Scale softkey Servicing og 123 741B 743B Users Manual Simulating loop power thermocouples 53 Simultaneous measure source 63 Source mode 44 Source mode 44 Sourcing current 44 electrical parameters 44 frequency loop power pressure resistance thermocouples 53 valiage 44 Square root delta flow calibration 41 Square law transmitters 57 Standard equipment 4j Step size softkey Stepping the output 58 strap 19 T Task list 743 only B4 Telephone number parts service or assistance 4 Temperature 124 Measuring with Thermocouple scale Ball Thermocouple measuring 34 measuring temperature with 34 sourcing types Time display activating 24 format 24 Transmitter l4 tol20 mA simulating 46 Transmitter mode Trip detect during ramping 60 Troubleshooting 97 U Units custom 42 temperature Uploading to a PC 743 only 96 User value 69 V Voltage measuring sourcing trip detect during ramping 60
33. a closed switch contact For pressure switches you use the Manual Test choice For testing switches that do not require sourcing pressure you can use the Auto Test choice 1 Connect the test leads between the pressure switch contact output and the mA Q RTD middle jacks on the calibrator 2 Connect the pressure module to the calibrator and connect a pressure line to the limit switch Leave the pressure line vented to atmosphere 3 If necessary press S555 for MEASURE mode 4 Press Al CAT for the continuity measure function b Press sd58 amp e for SOURCE mode 6 Press amp J for the pressure source function 7 Press to zero the pressure module 8 Press 35533 9 Press the As Found softkey 10 Highlight 1 Pt Switch Test from the menu and press ENIER J 11 Press _ENIER_ to modify the parameters for Setpoint 1 12 Make the following selections Setpoint 1 10 000 psi Setpoint Type High Set State Short 13 Press the Done softkey 14 Set the Tolerance to 0 5 psi 15 The next parameters Deadband Min and Deadband Max are optional Do not set them in this example 75 741B 743B Users Manual 16 17 18 19 20 21 22 23 24 25 76 Set Trip Function to Trip Cont by cycling through the choices with the NIE key Press the Done softkey Press the Manual Test softkey Close the pressure line vent and slowly bring the pr
34. ameters When you turn on the calibrator it powers up in the dc voltage measurement function Figure 10 shows electrical measurement connections To select an electrical measurement function from either SOURCE or MEASURE SOURCE mode first press for MEASURE mode then proceed as follows 1 Press ma for current V for dc voltage 5 once for ac voltage or twice for frequency or for resistance Documenting Process Calibrator Using Measure Mode MEAS A Fm MAX gj10f eps Figure 10 Electrical Measurement Connections 29 741B 743B Users Manual Note When measuring frequency you are prompted to select a frequency range If you expect the frequency you are measuring to be below 20 Hz press to select the lower frequency range then press _ENTER jJ 2 Connect the test leads as shown in Figure 10 depending on the measurement function Testing Continuity When testing continuity the beeper sounds and the word Short appears on the display when the resistance between the Q MEAS jack and its common jack is less than 25Q The word Open appears when the resistance is greater than 4000 Proceed as follows to test continuity 1 Remove power from the circuit to be tested 2 If necessary press S555 for MEASURE mode 3 Press 4 twice so that Open appears 4 Connect the calibrator to the circuit to be tested as Figure 10 shows 30 Measuring Pressure
35. backlight timeout battery save timeout Auto step 59 Battery charging Battery removing Index B Backlight 26 auto timeout 26 Bail 19 Bar code wand Battery auto save timeout 23 charge life eliminator lithium backup replacement 96 121 741B 743B Users Manual C Calculator Calibration 98 data 97 Cleaning the calibrator 97 Communicating with a PC 743 only 96 Connections for electrical measurement 28 Continuity testing 30 trip detect during ramping 60 Contrast adjusting display 24 Current measuring 28 sourcing Current shunt Customizing mV input units D Damping measurements Date display activating 24 format Display 122 Display language selecting P4 F Frequency measuring sourcing REM SES Jacks K Key functions Keys 14 EE ES Language selecting 24 Limit switch calibration Log softkey 743 only Logging data 743 only Loop power providing simulating Index continued Measure mode 28 Measure source mode Measurement damping 43 Measuring continuity current electrical parameters frequency pressure resistance temperature with thermocouples voltage Memory 79 reviewing B1 Min and Max measurement display B4 N Name field in setup 26 p Parts list 99 Pressure measuring 30 sourcing 50
36. cator H 0 25 Battery Save Annunciator Source Status Undamped Unsettled Indicator Ax Custom Units Indicator Secondary Value Measured Value Range Status gj7c eps Figure 7 Elements of a Typical Display 18 Documenting Process Calibrator Setting Up the Calibrator Setting Up the Calibrator support Figure 8 also shows you how to open the Using the Strap and Bail bail to stand the calibrator at a comfortable viewing After you unpack the calibrator attach its carrying angle for benchtop use strap as shown in Figure 8 You can adjust the strap as necessary to hang the calibrator on any sturdy gj8f eps Figure 8 Using the Bail and Installing the Strap 19 741B 743B Users Manual Charging the Battery A Before you use the calibrator for the first time charge its battery pack for 2 hours in the external battery charger Figure 9 shows how to remove the battery Remove the battery door and tap the calibrator with your hand to get the battery out Place the battery in the charger and connect the charger to line power The charger automatically senses line voltage and adjusts itself accordingly A discharged battery is fully charged in 2 hours or less in fast charge mode steady indicator light on the charger Full charge is maintained after that 20 time in trickle charge mode blinking indicator light on the charger Switching between charging modes is automatic You can leav
37. couple temperature transmitter you have just adjusted 1 2 72 Press the As Left softkey to record as left data Press the Auto Test softkey to begin an automatic sequence through all the test points or you can step through the tests manually When the tests are complete observe the error summary table such as the following SOURCE MEASURE ERROR 100 0 C 3 966 mA 0 21 150 0 C 7 881 m 0 05 200 0 C 12 029 mA 0 16 250 0 C 16 025 m n 14 3 0 0 C 19 963 mA 0 10 Prev Next Abort Page Page Done gj48s eps An asterisk next to a measure or source value indicates an unsettled value annunciator when the measurement was taken If all the results are within specification as they are this time press the Done softkey An entry in memory is made for as left data Documenting Process Calibrator Calibrating a Process Instrument Test Comments Model 743B runs tasks custom procedures that are developed using a host computer and compatible application software A task may display a list of proposed comments during execution When the comment list is displayed select a comment to be saved with the test results by pressing the and keys followed by _ENZER jJ Calibrating a Delta Pressure Flow Instrument The procedure to calibrate a Y instrument is the same as for other instruments as just described with the following differences e Source square root is automatically enab
38. date the calibrator was last calibrated shows on the calibration sticker and on the last screen in Setup mode The CAL STATUS number on the sticker should always match the Calibration Status number in the calibration screen Calibration of the 741B and 743B is to be done by qualified personnel Refer to the 74X Series Calibration Manual PN 602505 In Case of Difficulty If the calibrator operates abnormally do not use it Protection may be impaired When in doubt have the calibrator serviced If the display is blank or unreadable but the beeper works when you turn the calibrator on make sure the contrast is not maladjusted Press the and C keys to adjust the contrast 97 741B 743B Users Manual If the calibrator will not turn on check for a dead battery or unplugged battery eliminator If the calibrator is receiving power the display flashes when you turn it on To see if the calibrator is receiving power cup your hands around the display to shield it from ambient light and watch the display as you press the D button If there is a flash but the calibrator does not power up normally have the calibrator serviced Service Center Calibration or Repair Calibration repairs or servicing not covered in this manual should be performed only by qualified service personnel If the calibrator fails check the nickel cadmium battery pack first and replace it if needed Verify that the calibrator is being operated in
39. display Turns the backlight on and off Selects the pressure measurement or sourcing function Selects TC thermocouple or RTD resistance temperature detector measurement or sourcing functions Toggles between autorange and locked range and increments range Each time you press Fres the calibrator locks on the next range Press this key again for 2 seconds to resume autorange In calculator mode provides the square root function Clears a partial data entry or zeros the output when in the SOURCE mode When using a pressure module zeros the pressure module reading 15 741B 743B Users Manual Table 3 Key Functions cont No Name Description 10 and e Adjust the display contrast keys e Make choices from lists on the display e Increase or decrease the source level when using the step feature e In calculator mode provide arithmetic functions x 11 ENTER key Terminates a numeric entry when setting a source value or confirms your choice in a list In calculator mode provides the equals arithmetic operator 12 Ca key Toggles between resistance and continuity functions in MEASURE mode or selects the resistance function in SOURCE mode 13 Numeric keypad Used whenever a numeric entry is required 14 in key Toggles between ac voltage and frequency functions in MEASURE mode or selects frequency output in SOURCE mode 15 v key Selects the dc voltage function in
40. e The calibrator keeps measuring and sourcing during calculator operation Start the calculator from the SOURCE MEASURE or MEASURE SOURCE mode by pressing the Calc softkey You may have to press More Choices to get the Calc softkey After you press Calc the display number keys and keys with calculator functions aset P and _ENTER_ become an algebraic entry calculator Press Done when you want to resume normal calibrator operation Saving to and Recalling from the Registers When the calibrator is in calculator mode the top half of the display shows three register names and their contents e MEASURE the present measured value e SOURCE the present sourced value e REGISTER temporary storage for your use Insert the contents of any register into a calculation by pressing the Recall softkey followed by the softkey for the desired register Press Store to copy the number from the calculator display lower half into REGISTER to temporarily save the number for later use or into SOURCE 85 741B 743B Users Manual Using the Calculator to Set the Source Value When you store to SOURCE the calibrator presents you with a choice of unit multipliers when appropriate e g mV or V then starts sourcing that value The calibrator ignores attempts to store out of range values to SOURCE 86 Quick Guide to Applications The following figures show test lead connections and which calibrator funct
41. e the battery pack on trickle charge indefinitely without damage Note When you remove a charged battery from the charger wait for the blinking indicator to go off before you insert a discharged battery It takes about 2 seconds for the battery charger to reset Documenting Process Calibrator Setting Up the Calibrator gj9f eps Figure 9 Removing the Battery and Using the Charger 21 741B 743B Users Manual Battery Life AWarning To avoid false readings which could lead to possible electric shock or personal injury replace the battery as soon as the battery indicator EI Table 4 shows the operating time for a new fully charged battery pack Calibrator performance is guaranteed to meet specifications until the low battery annunciator located at the top right side of the display appears and the beeper beeps every appears ii seconds When the annunciator appears stop The battery normally lasts for up to 1000 charge using the calibrator and charge the battery If you discharge cycles To replace the battery refer to have a fully charged spare battery exchange it with Replacing the Battery later in this manual for the low battery instructions For longest battery life and best performance wait for to appear before you charge the battery Table 4 Battery Life Operating Modes Backlight Off Backlight On Measure continuous 6 5 Hours 6 Hours Measure and source with loop power on continuou
42. ed as follows 1 Connect the test leads as shown in Figure 16 depending on the source function 2 Press XJ for current for dc voltage for frequency or 4 for resistance 3 Enter the desired output value then press 44 V Hz Ii ENTER For example to source 5 0V dc press EF Note If you are sourcing frequency respond to the display prompt to select a zero symmetric sine or positive square wave The amplitude you specify is p p amplitude To change the output value enter a new value and press _ENTER jJ Note If you are sourcing current wait for the symbol to go out before you use the output To set the output value to 0 in the present source function press ES To turn off sourcing completely press zs twice Note Use the source current function to drive a current loop This is different than the loop power function in which the calibrator is powering a process instrument To source loop power use the Loop Power function accessible from Setup mode Documenting Process Calibrator Using Source Mode EN SOURCE OT oiov MAX Figure 16 Electrical Sourcing Connections 45 741B 743B Users Manual Simulating a 4 to 20 mA Transmitter You can configure the calibrator as a load on a current loop through the SOURCE mA function When you press the bo key in SOURCE mode the display prompts you to select Source mA or Simulate T
43. eeeeseeeeneeees Using Manual ESI or ii Contents continued Using Auto SLC Dis dte eui LU LLL Ramping the Output Simultaneous Measure Source nere Calibrating a Process Instrument Generating As Found Test Data nennen nennen Adjusting the Transmitter eeeeeesesseeeeesseseeeeeeeee nennen nennen nnne nnne RTE et d RUM E el Calibrating a Delta Pressure Flow Instrument Calibrating a Limit Switch Transmitter le EE Memory dee e le EE Saving ET Reviewing Memory eeessesssesessseeeeeeee eene nennen nne en nnne nenne nnne rennes Data Logging Model 743B Only Recording Min and Max Measurements seem Running a Preloaded Task 743B only Clearing Memory sessssssessesseseeeee enne nnne nennen rns aaa nnne nnns Using the Built in Calculator nennen Saving to and Recalling from the Heolsters Using the Calculator to Set the Source Value Quick Guide to Applications sessssesseeeeeenenneenneennennenem nennen Communicating with a PC Model 743 Only Maintenance c Replacing the Battery Pack AAA Internal Lithium Backup Battery Cleaning the Calibrator esessseseeeeeeneenneeeeennen nennen nnne nenne ere cci EPI E iii 741B 743B Users Manual In Case of Difficulty essen nennen nennen nnne nnne nennen Service Center Calibration or Repair
44. eennne Connections for Simulating an RTD Checking a Relay Output Trip Alarm Calibrating a Thermocouple Temperature Transmitter Limit Switch Terminology Calibrating a Chart Recorder Measuring Voltage Drop Monitoring AC Line Voltage and Frequency eesseseeeeeeneenneenen Calibrating a Current to Pressure I P Transmitter Measuring the Output Current of a Transmitter Measuring a Precision Resistor Sourcing Hesletance Checking a Switch sssessss Checking a Tachometer Calibrating a Pressure to Current P I Transmitter Calibrating a mV to Current Transmitter Checking a Vortex Sheeding Flowmeter LCD Operating Environment Specification viii Documenting Process Calibrator Introduction Fluke 741B and 743B Documenting Process Calibrators hereafter referred to as the calibrator are battery powered hand held instruments that measure and source electrical and physical parameters See Table 1 The calibrator lets you troubleshoot calibrate verify and document your work on process instruments Calibrator Specifications are near the back of the manual A summary of the measuring and sourcing functions provided by the 741B and 743B calibrators is shown in Table 1 In addition to these functions the calibrator has the following
45. ench top use BP7217 Ni Cd Battery Pack 74X Series Calibration Manual PN 602505 TL series test leads AC series test lead clips TP series test lead probes 80C series mini thermocouple connectors 80T IR Infrared Temperature Probe 18 C to 260 C PV350 Pressure Vacuum Module 101 741B 743B Users Manual e 80T 150U Temperature Probe e 80PK series thermocouples e 80i 410 Clamp on DC AC Current Probe e 80i 1010 Clamp on DC AC Current Probe e 80i 500s Clamp on AC Current Probe requires the Y9108 adapter e 80i 1000s Clamp on AC Current Probe requires the Y9108 adapter e 80i kW Current and Power Probe Specifications All specifications apply from 18 C to 28 C unless stated otherwise All specifications assume a 5 minute warmup period 102 Measurement specifications are valid only when Damping is turned on When damping is turned off or when the JM annunciator is displayed floor specifications are multiplied by 3 Floor specifications are the second part of the specifications usually expressed as 96 of full scale The measure pressure temperature and frequency functions are specified only with damping on The standard specification intervals for the 741B and 743B are 1 and 2 years Typical 90 day source and measurement accuracy can be estimated by dividing the 1 year 96 of Reading or 96 of Output specifications by 2 Floor specifications expressed as 96 of f s remain constant To
46. er mode is for diagnostic purposes only Use a fresh battery Do not use the calibrator in place of a transmitter for extended periods To set up the calibrator to emulate a transmitter proceed as follows 1 Disconnect the control bus wires from the transmitter output loop current or dc V control signal 2 Connect test leads from the appropriate calibrator SOURCE jacks to the control wires in place of the transmitter 3 Disconnect the process input e g thermocouple from the transmitter 4 Connect the process input to the appropriate calibrator MEASURE jacks or input connector 5b f necessary press sia for MEASURE mode 6 Press the appropriate function key for the process input 77 741B 743B Users Manual 10 11 12 13 14 78 Press for SOURCE mode Press the appropriate function key for the control output e g or m If the transmitter is connected to a current loop that has a power supply select Simulate Transmitter for the current output choice Select a source value e g 4 mA Press biie for MEASURE SOURCE mode Press More Choices until the Transmitter Mode softkey appears Press the Transmitter Mode softkey Set the 096 and 10096 values for MEASURE and SOURCE on the display You can select Linear or d for the transfer function Press Done 15 16 17 The calibrator is now in Transmitter mode It is measuring the process input and sourcing
47. er things such as tasks or saved results You enter the reading rate and duration in minutes as shown next Press ENTER to Change Reading Rate min Duration 10 minutes Number of Paints 200 Memory Available 26 5 Abort Done gj53s eps 81 741B 743B Users Manual Proceed as follows to log data 1 2 3 4 82 If necessary press bosat for MEASURE mode Press the More Choices softkey Press the Log softkey A list appears from which you select a reading rate 1 2 5 10 20 30 or 60 readings per minute Use the or key to select the reading rate Press ENIER Press to move the cursor to Duration Use the numeric keypad to enter the duration in minutes followed by _ENZIER J The maximum duration will depend on the reading rate and how much memory is available to log data The table below gives an estimate of the limits for duration assuming that no memory is being used for other purposes Readings Minute 1 2 5 0 20 30 60 Maximum Readings 8000 8000 8000 8000 8000 7980 7980 Caution Approximate Duration 133 hours 66 hours 26 hours 13 hours 6 hours 4 hours 2 hours A long logging duration can exceed the life of a battery charge Use a fresh battery and the appropriate duration or use the optional battery eliminator to avoid losing power during a logging session If appears during a log session the session is terminated and
48. essure up to the trip point When the switch sets slowly bring the pressure back down until the switch resets You can repeat this cycle as many times as you want Press the Done softkey and view the results Press the Done softkey and if desired enter Tag S N and or ID Press the Done softkey Now press the Adjust softkey if you want to adjust the limit switch and test it again Use the softkeys to control the calibrator and adjust the limit switch as necessary 26 Press the Done softkey 27 Press the As Left softkey to run the test again with the same parameters Results from the As Found and As Left tests are saved in the calibrator memory for later viewing or in the case of the 743B uploading The procedure for limit switches that respond to other parameters work similarly When you do a 2 Pt Limit Switch Test you simply follow the prompts on the display for testing the first switch changing test leads and testing the second limit switch Documenting Process Calibrator Transmitter Mode Transmitter Mode You can set up the calibrator so that a varying input MEASURE controls the output SOURCE like a transmitter This is called Transmitter mode In Transmitter mode the calibrator can be temporarily used as a substitute for a defective or suspect transmitter A Warning Do not use Transmitter mode in any environment that requires intrinsic safe equipment and practices Caution Transmitt
49. eys press _ENIER with the cursor on the field you would like to change for example Tag above The display presents you with an alphanumeric entry window as follows 80 gj51s eps Enter numbers using the numeric keypad and letters by highlighting the desired character with the and P keys followed by ENIER TI Enter a space character by pressing the Space softkey followed by _ENZER J When the entry showing at the bottom of the window is what you want press the Done softkey Documenting Process Calibrator Memory Operations Reviewing Memory Press the More Choices softkey until Review Memory appears then press the Review Memory softkey to recall and view saved results When you press the Review Memory softkey the display changes to Results From 05 23 96 10 Measure E f Source 04 96 59 pm TT 101 144 04 39 26 pm Measure Source 04 39 53 pm Measure 04 40 20 pm PT 121 5 04 41 37 pm Logged Data 04 4410 pm Min Max 04 44 25 pm Min Max 04 44 50 pm Measure 04 44 54 gj52s eps Press or and _ENIER or the Go to Result Softkey to view a saved result Data Logging Model 743B Only With Model 743B only you can record a series of measurements for later uploading to a host computer running compatible application software You can log up to 8000 readings depending on the reading rate duration and how much memory is being used for oth
50. features General features An analog display to make it easy to read measurements when the input is unstable A setup option that lets you set the display to English French German Italian or Spanish A thermocouple TC input output jack and internal isothermal block with automatic reference junction temperature compensation Or you can manually enter an external temperature reference The ability to store results for later review 741B 743B Users Manual Table 1 Summary of Source and Measure Functions Function Measure Source O O V7 dc V OV to 300V OV to 15V 10 mA max Ex ac V OV to 300V rms 20 Hz to 5 kHz No sourcing wa Frequency 1 Hz to 1 kHz 100 mV to 300V rms 0 1V to 10V pk zero symmetric sine or square 1 kHz to 30 kHz 0 5V to 30V rms wave 0 Hz to 50 kHz 30 kHz to 50 kHz 1V to 30V rms a Resistance 0Q to 11 kQ 0Q to 11 kQ mA dc Current 0 mA to 110 mA 0 to 22 mA 28V max sourcing or sinking _ Continuity Beep and the word Short indicates continuity No sourcing aro Thermocouple Types E N J K T B R S C L or U aro RTD 100Q Platinum 3926 100Q Platinum 385 Measure 2 3 or 4 120Q Nickel 672 wire 2009 Platinum 385 5009 Platinum 385 Source 2 wire 10000 Platinum 385 10Q Copper 427 100Q Platinum 3916 IST Pressure 27 modules ranging from 0 to
51. he following figure shows the display with Min Max on Source Off 5 0997 V 0 29999 Y 6 2990 Ver Auto Range D 2 5 5 0 7 5 io wv Iuuuluunlhuuluuuanl Log Choices Min Max E More On gj55s eps 84 Running a Preloaded Task 743B only Press the More Choices softkey until the Tasks Softkey appear then press Tasks to view the list of tasks procedures downloaded from a host computer Tasks are 743B calibrator configurations saved with a procedure name for example the type and manufacturer of a specific transmitter A task configures the calibrator for transmitter calibration with all the calibration parameters source and measure functions 0 and 100 levels test strategy predefined While the task is controlling the calibrator the Continue softkey becomes Continue Task Clearing Memory In Setup mode highlight the Clear Memory choice and press _ENIER to clear all the memory e Saved results e Min Max data e Log data sets Model 743 only A confirmation message appears so that you do not inadvertently erase the memory Documenting Process Calibrator Using the Built in Calculator Using the Built in Calculator For solving mathematical equations that involve the calibrator s source or measured value you can use the calibrator s built in calculator The present measure and source values including units are always available to be inserted into an equation at a single keystrok
52. ht to invoice Buyer for importation costs of repair replacement parts when product purchased in one country is submitted for repair in another country Fluke s warranty obligation is limited at Fluke s option to refund of the purchase price free of charge repair or replacement of a defective product which is re turned to a Fluke authorized service center within the warranty period To obtain warranty service contact your nearest Fluke authorized service center or send the product with a description of the difficulty postage and insurance prepaid FOB Destination to the nearest Fluke authorized service center Fluke assumes no risk for damage in transit Following warranty repair the product will be returned to Buyer transportation prepaid FOB Destination If Fluke determines that the failure was caused by misuse alteration accident or abnormal condi tion of operation or handling Fluke will provide an estimate of repair costs and obtain authorization before commencing the work Following repair the product will be returned to the Buyer transportation prepaid and the Buyer will be billed for the repair and return transportation charges FOB Shipping Point THIS WARRANTY IS BUYER S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE FLUKE SHALL NOT BE LIABLE FOR ANY SPECIAL INDIRECT INCIDENTAL OR CO
53. ion to use for many different applications Documenting Process Calibrator Quick Guide to Applications Measure V FLUKE 7438 DOCUMENTING process CALIBRATOR 743B Docume EENEG MEASURE Source Off Measure 0 74887 V 75 000 5 0424 V Range o Auto 25 50 75 1 Tn en T Scale Custom saye More Units Choices l iih TC Red aen eee SEN Circuit 0to iVd 2 Oo c Input 2502 Black ki25c eps ki26c eps Figure 25 Calibrating a Chart Recorder Figure 26 Measuring Voltage Drop 87 741B 743B Users Manual gt FLUKE 743B DOCUMENTING process CALIBRATOR Measure V ki27c eps Figure 27 Monitoring AC Line Voltage and Frequency 88 Documenting Process Calibrator Quick Guide to Applications Measure Pressure FLUKE 7438 Docu i Source mA FLUKE 700P05 Loop Power Disabled o SIGNAL ZERO A S 17 087 psi D TEST Ad X Pressure Module i9 lt 1 ki28c eps Figure 28 Calibrating a Current to Pressure I P Transmitter 89 741B 743B Users Manual Measure mA Loop Power Disabled Origi
54. ist of replaceable parts is available in the 74X Series Calibration Manual PN 602505 96 Replacing the Battery Pack Replace the battery pack when it no longer holds a charge for the rated interval The battery normally lasts for up to 1000 charge discharge cycles To order a replacement battery order Model BP7217 Nickel Cadmium Battery Pack In the USA and Canada call Fluke Service Parts at 1 800 526 4731 Outside the USA and Canada call 1 425 356 5500 Note eo Do not mix spent Nickel Cadmium batteries with the solid waste stream Spent batteries should be disposed of by a qualified recycler or hazardous materials handler Contact your authorized Fluke Service Center for recycling information Documenting Process Calibrator Maintenance Internal Lithium Backup Battery A lithium battery maintains the memory contents and Setup settings The normal service life for the lithium battery is 3 to 5 years You cannot access the lithium battery Return the calibrator to an authorized Fluke service center if you need to replace the lithium battery When the lithium battery is 3 years old replace it at the next calibration interval as a preventive maintenance procedure Cleaning the Calibrator Clean the calibrator and pressure modules with a soft cloth dampened with water or water and mild soap Caution To avoid damaging the plastic lens and case do not use solvents or abrasive cleansers Calibration Data The
55. led after the As Found calibration template is complete e Measure Source displays are in engineering units e The measurement percentage is automatically corrected for the transmitter s square root response and is used to compute instrument errors You select the Y instrument procedure in a menu after you press the As Found softkey 73 741B 743B Users Manual Calibrating a Limit Switch The procedure to calibrate a limit switch also uses the As Found and As Left calibration templates Select either the 1 Pt Switch or 2 Pt Switch procedure in a menu after you press the As Found softkey Figure 24 defines the terminology used in calibrating limit switches The template to set up the limit switch procedure lets you select the following parameters e Switch sense normally open or closed e For each setpoint e Setpoint value e Setpoint tolerance e High limit or low limit e Minimum deadband e Maximum deadband 74 Switch B Open Switch B n OF TA D CT Setpoint Deadband t Reset Switch B Closed Process Variable Switch A Closed Loo Reset Deadband J JJ Switch A Switch A Setpoint Open Switch A Low Limit Switch B High Limit gj24f eps Figure 24 Limit Switch Terminology Documenting Process Calibrator Calibrating a Process Instrument The procedure for testing a pressure limit switch follows The switch in this example sets at a high limit of 10 psi The set state is
56. lier in this manual e g Sourcing Electrical Parameters and connect the calibrator to the circuit to be tested 2 If necessary press 5 for SOURCE mode 3 Setthe calibrator for the desired source value 4 If you want to step the source value in of scale set the of scale value as described previously under Sourcing in Percent of Scale 5 Press the Step softkey 6 Press the Auto Step softkey Documenting Process Calibrator Using Source Mode Select values for the following parameters as you are prompted by the display Starting point in units or of scale Ending point Number of steps Time per step Single shot or continuous repetition Ramp pattern if continuous Start delay To start automatic stepping press the Start Step Softkey The softkey label changes to Stop Step To stop automatic stepping press the Stop Step softkey Press the Done softkey to resume normal operation 59 741B 743B Users Manual Ramping the Output Ramping sweeps the source up or down in value Use the ramp feature to check a limit switch or alarm or any time you want a smoothly increasing or decreasing output function You can set the calibrator to ramp up or down in engineering units mV V mA etc or of scale During ramping the output is adjusted 4 times per second The size of the steps is determined by your choices of endpoints and ramp time For example if you set the calibrator t
57. lly When the backlight is on and Auto Backlight Off is activated the Jj symbol shows at the top of the display To automatically turn off the backlight after a set time proceed as follows 1 Press bel 2 Press to highlight Off following Auto Backlight Off 3 Press ENTIER or the Choices softkey 4 Press to highlight On then press ENIF J 5 To accept the timeout period shown on the display press Done to exit and do not go on to step 6 6 To change the timeout period press to highlight the timeout period following Backlight Timeout 26 7 Press _ENZER or the Choices softkey 8 Enter your choice of timeout period in minutes accepted range 1 to 120 minutes 9 Press the Done softkey 10 Press the Done softkey or to exit Setup mode Personalizing the Calibrator You can load your name or some other alphanumeric identifier into the calibrator to be displayed at power up and in saved results Proceed as follows to load an identifier 1 Press w 2 Press Next Page twice 3 Press to move the cursor to the same line as ID Documenting Process Calibrator Setting Up the Calibrator 4 Press display appears as follows ENTER or the Choices softkey The Select character and press ENTER BeBeBCDEFGHI J KLMN OP RS T UV WR Y 2 H EE Back Abort Space Space Done gj40s eps 5 The ID string is shown at the bottom of the boxed
58. ls with a slew rate greater than 5 volt millisecond Range Resolution DC Voltage Output Documenting Process Calibrator Specifications Models 741B and 743B of Output of Full Scale 1 Year 0 01 0 005 2 Year 0 015 0 005 110 mV 1uV 14V 10 pV 15V 100 uV 0 01 0 005 0 01 0 005 0 015 0 005 0 015 0 005 Temperature Coefficient 0 001 of output 0 001 of f s C in the ranges 10 to 18 C and 28 to 50 C Maximum Output Current 10 mA Loading 0 001 f s 1 uV mA Common Mode Error 0 008 f s Common Mode Volt Maximum Input Voltage 30V dc 107 741B 743B Users Manual DC Current Output Models 741B and 743B Range Mode Resolution of Output of Full Scale 1 Year 2 Year 22 mA Source mA 1 pA 0 01 0 015 0 02 0 015 Current Sink Maximum Burden Voltage 24V Temperature Coefficient 0 003 of output 0 003 of f s C in the ranges 10 to 18 C and 28 to 50 C Common Mode Error 0 008 f s Common Mode Volt Maximum Input Voltage 30V dc 22 mA Simulate Transmitter 1 pA 0 02 0 03 0 02 0 03 Specification applies for currents between 2 mA and 22 mA For current below 2 mA typical accuracy is 0 15 of full scale 108 Documenting Process Calibrator Specifications Resistance Sourcing Models 741B and 743B Range Resolution of Output ohms 1 Year 2 Year 11 0000 1mQ
59. mode The calibrator is simultaneously sourcing dc volts and measuring dc volts You can see the measurement readings in the top window and the active source value in the bottom window as shown in Figure 4 Documenting Process Calibrator Getting Started Exercise gj3f eps Figure 3 Jumper Connections for Demonstration MEASURE 4 9999 V SOURCE 5 0000 V Fana Sep Save choices gj4s eps Figure 4 Measure Source Example 11 741B 743B Users Manual Operating Features Input and Output Jacks Figure 5 shows the calibrator input and output jacks Table 2 explains their use Table 2 Input Output Jacks and Connectors No 5 6 7 8 9 10 12 Name Battery Eliminator jack NSERIAL PORT 743B Only Pressure module connector TC input output N MEAS V jacks N SOURCE mA MEAS mA Q RTD jacks A SOURCE VQ RTD jacks Description Jack for the Model BE9005 Battery Eliminator Use the battery eliminator for bench top applications where ac line power is available This input does not charge the battery Connects the calibrator to an RS 232 serial port on a personal computer Connects the calibrator to a pressure module Jack for measuring or simulating thermocouples This jack accepts a miniature polarized thermocouple plug with flat in line blades spaced 7 9 mm 0 312 in center to center Input jacks for measuring voltage frequency or three or
60. nal Circuit Wiring b ki29c eps Figure 29 Measuring the Output Current of a Transmitter 90 Documenting Process Calibrator Quick Guide to Applications Source Measure Resistance e i FLOKE 743B DOCUMENTING process CALIBRATOR Resistance Source Off fF FLUKE 743B Measure st 1 030kQ Wei 5000 Q More Choices 2 5 50 7 Pn Custom Units fa Save gi T More Scale Choices SETUP w le SETUP e SOOO eoooo J9 OC 35 P og ee l Circuit ki30c eps ki31c eps Figure 30 Measuring a Precision Resistor Figure 31 Sourcing Resistance 91 741B 743B Users Manual Measure Frequency Measure Continuity Lada 10 779kHz Auto Range 5 10 kHz 25 so 7 lun Scale Custom Saye More SS Units Choices SETUP C B Gir Gee 2 J SETUP We n TC s Ex Ge 3 2 ki32c eps ki33c eps Figure 32 Checking a Switch Figure 33 Checking a Tachometer 92 Documenting Process Calibrator Quick Guide to Applications Measure mA EC Source Pressure Hand Pump EE Loop Power Enabled 24V
61. nctions except pressure which requires that you use an external pressure source e Stepping the output manually with the amp and keys or in automatic mode e Ramping the output with optional continuity or V trip detect Using Manual Step The manual Step feature allows you to select a step size in engineering units mV V mA C etc or of scale Stepping the output in 96 of scale is useful for quickly jumping between 096 and 10096 set step size 100 or 0 50 100 set step size 50 Stepping works in SOURCE and in MEASURE SOURCE modes Proceed as follows to select a step size 58 Refer to the appropriate Using Source Mode subheading earlier in this manual e g Sourcing Electrical Parameters and connect the calibrator to the circuit to be tested If necessary press for SOURCE mode Set the calibrator for the desired source value If you want to step the source value in of scale set the of scale value as described previously under Sourcing in Percent of Scale Press the Step softkey Use the numeric keypad to enter the step size in the units shown on the display Press the Done softkey Now you can adjust the output in steps by pressing the amp and keys Using Auto Step To have the calibrator make a sequence of steps automatically either once through the sequence or repetitively proceed as follows 1 Refer to the appropriate Using Source Mode subheading ear
62. nd optional equipment replaceable part for Models 741B and 743B See Table 9 Replacement Parts Item Fluke Part Number Adjustable Quick Release Strap 946769 Rubber Side Plug 938274 Battery Door 938357 Bail 938340 Bail Screw 943431 Case Screw 942797 Lens for Model 741B 949487 Lens for Model 743B 949490 Input Output Jack Decal 946756 BC7210 Battery Charger Instruction Sheet multilingual 944020 Note Refer to Standard Equipment and Accessories for model or part numbers for most replaceable equipment 99 741B 743B Users Manual Accessories The with Fluke accessories listed below are compatible the 741B and 743B calibrators For more information about these accessories and their prices contact your Fluke representative 100 Fluke 700SW DPC TRACK application software for Microsoft Windows DPC TRACK provides everything you need to interface the 743B with a PC compatible computer With DPC TRACK you can compose and load tasks procedures unload results generate reports and create an instrument calibration database Fluke 700BCW Bar Code Wand Fluke 700 IV Current Shunt for simultaneous dc current sourcing and measuring Pressure Modules Fluke model numbers listed below Differential models also operate in gage mode Contact your Fluke representative about new pressure modules not listed here Fluke 700P01 0 to 10 H O diffe
63. ning To avoid possible electric shock when using Custom Units always refer to the Secondary Value displayed below and to the right of the main display for the actual value of the measurement in native engineering units Documenting Process Calibrator Using Measure Mode Damping Your Measurements The calibrator normally applies a software filter to dampen measurements in all functions except continuity The specifications assume that damping is turned on The damping method is a running average of the last several measurements Fluke recommends that you leave damping on Turning damping off may be useful when measurement response is more important than accuracy or noise reduction If you want to turn off damping press the More Choices softkey twice then press the Dampen softkey so that Off appears Press Dampen again to turn damping back on The default state is On Note If a measurement falls outside a random noise window a new average is started If damping is turned off or until measurements are fully damped the symbol is displayed 43 741B 743B Users Manual Using Source Mode The operating mode i e MEASURE SOURCE is shown in a reverse video bar on the display If the calibrator is not in SOURCE mode press oened until SOURCE is shown You must be in SOURCE mode to change any of the SOURCE parameters Sourcing Electrical Parameters To select an electrical sourcing function proce
64. ns DC Current Measurement Models 741B and 743B Range Resolution of Reading of Full Scale 1 Year 2 Year 30 mA 1 pA 0 01 0 015 0 02 0 015 110 mA 10 uA 0 01 0 01596 0 02 0 015 Temperature Coefficient 0 001 of rdg 0 002 f s C in the ranges 10 to 18 C and 28 to 50 C Common Mode Error 0 01 f s Common Mode Volt Maximum Input Voltage 30V dc Resistance Measurement Models 741B and 743B Range Resolution of Reading ohms 110 0 0010 0 05 0 05 0 075 0 05 1100 0 010 0 05 0 05 0 075 0 05 1 1 KQ 0 10 0 05 0 5 0 075 0 5 11 KQ 10 0 1 10 0 196 10 Temperature Coefficient 0 01 f s 2 mQ C in the ranges 10 to 18 C and 28 to 50 C Common Mode Error 0 005 f s Common Mode Volt Maximum Input Voltage 30V dc 105 741B 743B Users Manual Continuity Testing Resistance Continuous tone 250 May or may not get tone 25 to 4000 No tone 24000 Frequency Measurement SS 1 00 Hz to 109 99 Hz 0 05 Hz 0 05 Hz 110 0 Hz to 1099 9 Hz 0 5 Hz 0 5 Hz 1 100 kHz to 10 999 kHz 0 005 kHz 0 005 kHz 11 00 kHz to 50 00 kHz 0 05 kHz 0 05 kHz Minimum Amplitude for Frequency Measurement square wave lt 1 kHz 300 mV p p 1 kHz to 30 kHz 1 4 V p p gt 30 kHz 2 8V p p Maximum input lt 1 kHz 300V rms gt 1 kHz 30V rms Input Impedance 5 MQ For frequency measurement less than 109 99 Hz specifications apply for signa
65. nsmitters Linear Responding Transmitters 1 If necessary press LS for SOURCE mode 2 Selecta source function aal v C kaJ or amp J as previously described and enter a value 3 Press the Scale softkey 4 Use the numeric keypad to enter the 0 of scale value 096 Value 5 Press ENTER J 6 Use the numeric keypad to enter the 100 of scale value 100 Value 7 Leave Mode set to 8 Press the Done softkey Documenting Process Calibrator Using Source Mode Percent of scale remains in effect until you press the Scale softkey again or you change the source function Square Law Process Variables When you select V within scaling the calibrator output value is the percent value entered squared and converted to engineering units 1 If necessary press LS for SOURCE mode 2 Selecta source function aal v or C amp as previously described n E Cn J Lato j 3 Press the Scale softkey 4 Use the numeric keypad to enter the 0 of scale value 0 Value 5 Press ENTER J 6 Use the numeric keypad to enter the 100 of scale value 100 Value 7 Set Mode to V 8 Press ENTER J 57 741B 743B Users Manual 9 Press the Done softkey Percent of scale remains in effect until you press the Scale softkey again Stepping and Ramping the Output Value Two features are available for adjusting the value of source fu
66. nt to the next Unless stated otherwise everything in this manual applies to both the Fluke 741B and 743B Documenting Process Calibrators For performance testing and calibration instructions order the 74X Series Calibration Manual PN 602505 The phone number in the USA and Canada for replacement parts is 1 800 526 4731 741B 743B Users Manual For service help in the USA and Canada call a Fluke Service Center For application or operation assistance on Fluke products call USA and Canada 1 800 44 FLUKE 1 800 443 5853 Europe 31 402 678 200 Japan 81 3 3434 0181 Singapore 65 276 6196 Anywhere in the world 1 425 356 5500 Or visit Fluke s Web site al www fluke com Standard Equipment The items listed below and shown in Figure 1 are included with your calibrator If the calibrator is damaged or something is missing contact the place of purchase immediately To order replacement parts or spares see the user replaceable parts list at the end of this manual e TL24 industrial test leads two sets e AC20 test clips two sets TP20 test probes one set BP7217 rechargeable nickel cadmium battery pack BC7210 battery charger with Instruction Sheet Adjustable quick release strap PN 946769 Jumper for three wire RTD measurement connections two included PN 944632 741B 743B Users Manual English PN 644788 French PN 649688 German PN 649696 Italian PN 649704 Spanish PN 649670
67. o control the format used to display the date and time You should set the calendar and clock whether or not you use the date and time display since a timestamp is applied to all saved results Documenting Process Calibrator Setting Up the Calibrator Proceed as follows to set up the time and date displays 1 Press bel 2 Press the Next Page softkey The display appears as follows Date Display Date 067 30 36 Date Format 07 91 99 Time Display Off Time OF 26 00 am Time Format 12 00 00 am Numeric Format 0 000 Prev Next Page Page Bong Choices gj38s eps 3 Use the and keys to move the cursor to the parameter you want to change then press CENIER_ or the Choices softkey to choose a setting for that parameter For example the following display appears after you select Date Format 31 01 88 Date Format 31 01 38 31 01 99 Sun 01 31 33 Sun 31 01 33 Sun 31 01 33 Sun 31 01 33 gj39s eps Press or to move the cursor to the desired date format Press ENTER to go back to the display Make another selection or press the Done softkey or to save your settings and exit Setup mode 25 741B 743B Users Manual Using the Backlight Press amp to toggle the display backlight on and off When the backlight is on the x symbol shows at the top of the display You can minimize battery usage by setting the calibrator to turn the display backlight off automatica
68. o ramp from 1 mV to 1V over 10 seconds the output is adjusted in approximately 25 mV steps Ramping continues until the selected limit is reached or until an optional trip condition is encountered The optional trip detect works as follows during ramping the calibrator checks for either a 1V change in dc voltage or a change in continuity status Open or Short from one 1 4 second interval to the next 60 Proceed as follows to ramp i e sweep the source 1 Refer to the appropriate heading earlier in this manual e g Sourcing Electrical Parameters and connect the calibrator to the circuit to be tested Figure 22 shows an example 2 To automatically stop ramping if a trip condition is detected connect a voltage trip circuit to the V MEAS jacks or a continuity trip circuit to the mA Q RTD MEAS jacks Continuity detection is not available when sourcing current 3 If necessary press LZ for SOURCE mode 4 Setthe calibrator for the desired source value as previously described 5 If you want to ramp the output in of scale set of scale as described previously under Sourcing in Percent of Scale 6 Press the More Choices softkey 7 Press the Ramp softkey The display changes to the following SOURCE RAMP Enter Start Value Start Value iq End Value Ramp Time Trip Detect Disabled Trip Function BC Abort Done gj41s eps 8 Fillin the parameters as prompted Enter the Start Value
69. or or dust When using a pressure module make sure the process pressure line is shut off and depressurized before you connect it to or disconnect it from the pressure module Disconnect test leads before changing to another measure or source function When servicing the calibrator use only specified replacement parts 741B 743B Users Manual Getting Started Exercise The following is a brief getting started exercise that will make it easier to understand the instructions in the rest of the manual t 10 When you first unpack the calibrator you will need to charge the battery See Figure 9 and charge the battery for 2 hours Reinstall the battery in the calibrator Connect the calibrator s voltage output to its voltage input as follows connect leftmost pair of jacks V Q RTD SOURCE to the right most pair of jacks V MEAS See Figure 3 Press D to turn on the calibrator Press amp and to adjust the display contrast for the best looking display The calibrator powers up in the dc voltage measurement function and is taking readings on the V MEAS pair of input jacks Press L to switch to the SOURCE screen The calibrator is still measuring dc voltage and you can see the active measurements at the top of the display Press to select dc voltage sourcing Press 5 on the keypad and _ENZER to begin sourcing 5 0000V dc Now press uae to go to the split screen simultaneous MEASURE SOURCE
70. ptional Fluke Model BE9005 Battery Eliminator to conserve battery power When the battery eliminator is used the battery is internally disconnected and can be removed from the calibrator The battery eliminator does not charge the battery 23 741B 743B Users Manual The battery eliminator is handy for troubleshooting process instruments on the workbench and for long term data logging When you calibrate an instrument you will get best results using battery power Selecting the Display Language The calibrator displays information in five languages English is the default To change the display language proceed as follows 1 Press bel Press the third softkey from the left twice Press ENTER Press or to highlight your choice of language 2 3 Press three times 4 5 6 Press _ENZER to confirm your choice The language you choose is the power up default 7 Press beud to exit Setup mode 24 Adjusting the Display Contrast Press or P to increase contrast Press or to decrease contrast When the amp and keys are being used to select an item from a list for example in Setup mode use the and P keys In calculator mode all four direction keys are used for arithmetic functions Displaying the Date and Time The date and time can be shown at the top of the display during normal operation In Setup mode you can turn this date and time display on or off You can als
71. rameter d Press or to move the cursor to the desired setting e Press CENTER to go back to the display f Press the Done softkey or to exit Setup mode If necessary you can change between ITS 90 or IPTS 68 Temperature Scale in Setup mode The procedure is the same as steps a f above Documenting Process Calibrator Using Measure Mode Table 5 Thermocouple Types Accepted Positive Lead H Type Positive Lead Color Negative Lead Specified Range Material ANS IEC Material C E Chromel Purple Violet Constantan 250 to 1000 N Ni Cr Si Orange Pink Ni Si Mg 200 to 1300 J lron White Black Constantan 210 to 1200 K Chromel Yellow Green Alumel 270 to 1372 T Copper Blue Brown Constantan 250 to 400 B Platinum 3096 Rhodium Gray Platinum 6 Rhodium 600 to 1820 R Platinum 13 Rhodium Black Orange Platinum 20 to 1767 S Platinum 10 Rhodium Black Orange Platinum 20 to 1767 C Tungsten 5 Rhenium White Tungsten 26 Rhenium 0 to 2316 L DIN J Iron Constantan 200 to 900 U DIN T Copper Constantan 200 to 600 American National Standards Institute ANSI device negative lead L is always red International Electrotechnical Commission IEC device negative lead L is always white Not an ANSI designation but a Hoskins Engineering Company designation 35 741B 743B Users Manual mA A mx A ovo LMF Mex Process Temperature 0 A z S
72. ransmitter When you Source mA the calibrator is sourcing current and when you Simulate Transmitter the calibrator is sourcing a variable resistance to regulate current to the specified value Connect an external loop supply to the positive top mA jack as shown in Figure 17 Note Also see Transmitter Mode in which the calibrator can be set up to temporarily take the place of a two wire process transmitter 46 Documenting Process Calibrator Using Source Mode FLUKE 7438 cocuwenrina PROCESS CALIBRATOR Ge 2 amp o a o GE E E Ed m as A ki17c eps Figure 17 Connections for Simulating a 4 to 20 mA Transmitter 47 741B 743B Users Manual Supplying Loop Power The calibrator supplies loop power at 28V or 24V dc The 28V setting supplies enough current for two or three 4 20 mA devices on the loop in addition to the two wire transmitter but uses more battery power Use the 24V setting if there are two or fewer devices on the loop in addition to the two wire transmitter Each device on a typical 4 to 20 mA loop has a resistance of 2500 thus dropping 5V at 20 mA A typical transmitter must have 11V minimum in order to operate correctly at its top end When loop power is enabled the mA middle column jacks are dedicated to sourcing and measuring the current loop This means that the SOURCE mA measure
73. raset nennen 741B 743B Users Manual Displaying the Date and Time eene Using the Backlight isisisi ms Personalizing the Calibrator eesessseseeeeeneenennnnen nennen nennen Using Measure Mode tee tugsie os Sege Ake aide EA Measurement Ranges cccessscceceseeeeeeeeeceeenseeeeseseneeeeeeeeeseseneenesenseeseseeeneeseesetes Measuring Electrical Parameters AA Testing Continue Measuring Pressure iiie eese ere eo Ao ee et SEO TRES ODE Ue ne ead Measuring Temperature esseeseesesesseeseeeeee enne nnnnnn entren tnnt nn nnne nennen nnn Using lune ee ET Using Resistance Temperature Detectors RTDs Measurements in Percent of Scale eecceeeeeseeeeeeeeeeeeeeeeeeeeeeeeeeeeseaeeeeeeeseaeeeeeeene Linear Output Transmitters essen Square Law Process Variables AAA Customizing mV Input Untte sesseeeeeeseeeeeeeeeeneeereseneintterttnnstnntnntinstnnntnnttnnttnnennennnnt Damping Your Measurements esses eene eee Using SOUICE Mode t i are ne toaias Sourcing Electrical Parameters AAA Simulating a 4 to 20 MA Transmitter supplying Loop POWE P CES Sourcing dE simulating Thermocouples isis ines stint i Li eerste Rant ania Simulating H T De Sourcing in Percent of Scalinata an a S n ENA Linear Responding Transmitters AA Square Law Process Variables AAA Stepping and Ramping the Output Value ce eeceeeeeeeneeeeneeeeeeeeeeeeeeeese
74. rential dry Fluke 700P02 0 to 1 psi differential dry Fluke 700P22 0 to 1 psi differential wet Fluke 700P03 0 to 5 psi differential dry Fluke 700P23 0 to 5 psi differential wet Fluke 700P04 0 to 15 psi differential dry Fluke 700P24 0 to 15 psi differential wet Fluke 700P05 0 to 30 psi gage wet Fluke 700P06 0 to 100 psi gage wet Fluke 700P07 0 to 500 psi gage wet Fluke 700P08 0 to 1 000 psi gage wet Fluke 700P09 0 to 1 500 psi gage wet Fluke 700P29 0 to 3 000 psi gage wet Fluke 700P30 0 to 5 000 psi gage wet Fluke 700P31 0 to 10 000 psi gage wet Documenting Process Calibrator Accessories Fluke 700PA3 0 to 5 psi absolute wet Fluke 700PA4 0 to 15 psi absolute wet Fluke 700PA5 0 to 30 psi absolute wet Fluke 700PA6 0 to 100 psi absolute wet Fluke 700PV3 0 to 5 psi vacuum dry Fluke 700PV4 0 to 15 psi vacuum dry Fluke 700PD2 1 psi dual range dry Fluke 700PD3 5 psi dual range dry Fluke 700PD4 15 psi dual range dry Fluke 700PD5 15 30 psi dual range wet Fluke 700PD6 15 100 psi dual range wet Fluke 700PD7 15 4200 psi dual range wet Fluke 700PCK Pressure Module Calibration Kit requires pressure calibration equipment and a PC compatible computer Fluke 700TC1 TC miniplug kit Fluke 700TC2 TC miniplug kit C781 Soft Carrying Case C789 Soft Carrying Case C700 Hard Carrying Case BE9005 Series Battery Eliminator for b
75. s 3 5 Hours 3 Hours Typical intermittent operation gt 8 Hours gt 8 Hours 22 Documenting Process Calibrator Setting Up the Calibrator Preserving Battery Life An optional Auto Battery Save feature turns the calibrator off after a selected idle time The default setting for Auto Battery Save is Off When Auto Battery Save is On the symbol shows in the upper right corner of the display The setting is preserved after you turn off the power Auto Battery Save works the same when using the battery eliminator Turn on the Auto Battery Save feature as follows 1 Press bel 2 Press to highlight Off following Auto Battery Save 3 Press Ein or the Choices softkey 4 Press to highlight On then press ENIER J 5 To accept the timeout period shown on the display you can finish here Press Done to exit Setup mode and do not go on to step 6 6 To change the timeout period press to highlight the timeout period following Battery Save Timeout 7 Press _ENZER or the Choices softkey 8 Enter your choice of timeout period in minutes accepted range 1 to 120 minutes 9 Press the Done softkey 10 Press the Done softkey or to exit Setup mode Using the Optional Battery Eliminator Caution To avoid damage to the calibrator use only Fluke Model BE9005 Series Battery Eliminator available from your Fluke representative Where ac power is available you can use the o
76. sation ITS 90 per NIST Monograph 175 for B R S E J K N T IPTS 68 per IEC 584 1 for B R S E J K T IPTS 68 per DIN 43710 for L U Temperature Coefficient 0 05 C C in the range 10 to 18 C and 28 to 50 C Common Mode Error 0 01 C Common Mode Volt Maximum Input Voltage 30V 113 741B 743B Users Manual Temperature Resistance Temperature Detectors Type o 1000 Pt 3926 Temperature RTDs Model 741B and 743B RR 1000 Pt 385 FREE 1200 Ni 672 2000 Pt 385 Ll 5000 Pt 385 114 Range C Measure C Source C 1 Year 2 Year 1 Year 2 Year 200 to 0 0 3 0 4 0 1 0 2 0 to 630 0 5 0 8 0 2 0 4 200 to 0 0 3 0 5 0 1 0 2 0 to 400 0 5 0 8 0 2 0 4 400 to 800 0 8 1 0 0 4 0 5 200 to 260 0 3 0 4 0 1 0 2 200 to 0 0 3 0 5 0 1 0 2 0 to 400 0 5 0 8 0 2 0 4 400 to 630 0 8 1 0 0 4 0 5 200 to 0 0 3 0 5 0 1 0 2 0 to 400 0 5 0 8 0 2 0 4 o 400 to 630 0 8 1 0 0 4 0 5 Documenting Process Calibrator Specifications Temperature Resistance Temperature Detectors cont Type o Range C Measure C Source C 1 Year 2 Year 1 Year 2 Year 1000Q Pt 385 200 to 0 0 3 0 5 0 1 0 2 0 to 400 0 5 0 8 0 2 0 4 400 to 630 0 8 1 0 0 4 0 5 100 Cu 427 400t00 2 2 1 1 0 to 260 2 2 1 1 1000 Pt 3916 200 to 190 0 3 0 4 0 3 0 4 190 to 0 0 3 0 4 0 1
77. se three tests show failures The failures were outside the 0 5 tolerance that we selected Either press the Done softkey to save the data or the Abort softkey to delete the data and start over You can see the saved data entry and recall the table for later viewing through the Review Memory softkey during normal operation With Model 743 you can upload this data to a host computer running compatible application software Adjusting the Transmitter Proceed as follows to make the calibration adjustments to the transmitter Always refer to the transmitter manufacturer s instructions to locate the adjustment controls and connection points for your transmitter 1 Press the Done softkey while viewing the results summary Press the Adjust softkey The calibrator sources 0 of span 100 C in this example and displays the following softkeys e Go to 100 Go to 0 e Goto 50 e As Left e Exit Cal Adjust the transmitter output for 4 mA then press the Go to 100 softkey 71 741B 743B Users Manual Adjust the transmitter output for 20 mA If the span was adjusted in step 4 you must go back and repeat steps 3 and 4 until no more adjustment is required Now check the transmitter at 50 If it is within specification your adjustment is complete If not adjust the linearity and begin this procedure again at step 3 As Left Test Run Proceed as follows to generate and record as left data for the thermo
78. ss or to select the desired RTD type 4 5 6 Attach the RTD to input jacks as the display or Figure 15 shows Use the supplied jumper between the mA RTD MEAS low jack and the V MEAS low jack as shown if you are using a 3 wire connection 7 Press ENTER 38 Caution Do not force a dual banana plug between any two jacks in the horizontal orientation Doing so will damage the jacks Use the supplied jumper wire when needed for RTD measurements You can use a dual banana plug in the vertical orientation See Figure 14 Documenting Process Calibrator Using Measure Mode Figure 14 Using a Jumper Correctly gj14f eps If necessary you can change between C or F temperature units in Setup mode as follows a Press few b Press the Next Page softkey twice c Use the and keys to move the cursor to the parameter you which to change then press ENIFh or the Choices softkey to choose a setting for that parameter d Press or to move the cursor to the desired setting e Press CENTER to go back to the et display f Press the Done softkey or to exit Setup mode If necessary you can change between ITS 90 or IPTS 68 Temperature Scale in Setup mode The procedure is the same as steps a through f above 39 741B 743B Users Manual gj15f eps Figure 15 Measuring Temperature with an RTD 40 Documenting Process Calibra
79. supported by the calibrator Connect the calibrator TC input output to the instrument under test with thermocouple wire and the appropriate thermocouple mini connector polarized thermocouple plug with flat in line blades spaced 7 9 mm 0 312 in center to center One pin is wider than the other Do not try to force a miniplug in the wrong polarization Figure 20 shows this connection Proceed as follows to simulate a thermocouple 1 Attach the thermocouple leads to the appropriate TC miniplug then to the TC input output as Figure 13 shows 2 If necessary press 35 for SOURCE mode 3 Press for the display that prompts you to enter thermocouple type 4 Press the or key followed by _ENIER J to select the desired thermocouple type Press the or key followed by ENTER to select Linear T default or Linear mV for calibrating a temperature transmitter that responds linearly to millivolt inputs Enter the temperature you want to simulate as prompted by the display and press ENTER jJ Note If you use copper wire instead of thermocouple wire the reference junction is no longer inside the calibrator The reference junction is moved to the instrument transmitter indicator controller etc input terminals You must measure this external reference temperature accurately and enter it into the calibrator Do this by pressing and setting Ref Junc Compensat and Ref Junc Temp After you enter
80. the control signal output proportional to the input To change any of the Transmitter mode parameters press Change Setup and repeat the process in step 13 To exit Transmitter mode press the Abort softkey Documenting Process Calibrator Memory Operations Memory Operations Saving Results As Found As Left test results are automatically saved at the end of each test routine Any other time during MEASURE SOURCE or MEASURE SOURCE you can press the Save softkey to save the data on the display for later review After you press Save the calibrator saves the information on the display and shows a saved result index number the date and time and the percentage of memory available as in the following display Press Continue to Input Tag ID Item Saved 28 057 23 96 12 56 24 pm Memory Available 44 0 Abort Continue Done gj49s eps If you want to add information to the saved data the calibrator has a way for you to do so If you press the Continue softkey the display prompts you to enter the instrument tag identifier Tag instrument serial number S N and operator name ID as shown in the following display 79 741B 743B Users Manual MEASURE Press ENTER to Change Tag RE gj50s eps Enter alpanumeric characters into the highlighted field with the optional bar code wand 743 only or the calibrator keys To enter alphanumeric characters using the calibrator k
81. tions with Loop Power Enabled 9 Replacement Pate uote dete etre ic Exec d Eine E cR ul pe chua eek edere RR E RE E cA 741B 743B Users Manual vi List of Figures Figure Title 1 Standard Equipment ETT 2 Definition of Symbols cceeceeeeeeeeee cence tence eeeeeeeeeeeeeseaeeeeeesaaeseeeesiaeeseeeessaeeeeeeeenaeeneaeens 3 Jumper Connections for Demonstration 4 Measure Source Example AAA 5 Input Output Jacks and Connectors nene 6 MI CEA 7 Elements of a Typical Display 8 Using the Bail and Installing the Strap ssesseeneeeeeenenneens 9 Removing the Battery and Using the Charge 10 Electrical Measurement Conpnechlons nennen 11 Gage and Differential Pressure Modules seseeeeeeeeenenen nene 12 Connections for Measuring Pressure 13 Measuring Temperature with a Thermocouple esee 14 Using a Jumper Gottrectly 2 2 iir etie EP tr ER o e EIE Aer eiie baba 15 Measuring Temperature with an RTD emen nere 16 Electrical Sourcing Connections sssssssessseeeeeeeeeneee nennen 17 Connections for Simulating a 4 to 20 mA Transmitter vii 741B 743B Users Manual 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 Connections for Supplying Loop Power Connections for Sourcing Pressure Connections for Simulating a Thermocouple sssesssessreerreeiretneterstttsitstirstrnetnntrnntnn
82. tor Using Measure Mode Measurements in Percent of Scale This feature lets you scale the measurements in accordance with a particular process instrument s response Percent of scale works for linear output transmitters or square law transmitters such as differential pressure transmitters that report flow rate Linear Output Transmitters 1 If necessary press bosat for MEASURE mode V l E 2 Select a measurement function oa 3 or amp as previously described 3 Press the Scale softkey 4 Use the numeric keypad to enter the 096 of scale value 096 Value 5 Press ENTER 6 Use the numeric keypad to enter the 100 of scale value 100 Value 7 Press ENTER 8 Leave Mode set to 9 Press the Done softkey Percent of scale remains in effect until you press the Scale softkey again or change to another measurement function Square Law Process Variables When you select V within scaling the calibrator takes the square root of its input and displays the measurement in percent For example when connected to the output of a delta pressure transmitter the calibrator reading is proportional to flow rate 1 If necessary press amp S5se9 for MEASURE mode Ve E 2 Select a measurement function oa C or amp as previously described 3 Press the Scale softkey 4 Use the numeric keypad to enter the 096 of scale value 096 Value
83. ure in a pressurized system shut off the valve and slowly bleed off the pressure before you attach the pressure module to the pressure line Caution To avoid mechanically damaging the pressure module never apply more than 10 ft Ib of torque between the pressure module fittings or between the fittings and the body of the module Always apply appropriate torque between the pressure module fitting and connecting fittings or adapters To avoid damaging the pressure module from overpressure never apply pressure above the rated maximum printed on the pressure module To avoid damaging the pressure module from corrosion use it only with specified materials Refer to the printing on the pressure module or the pressure module instruction sheet for the acceptable material compatibility Documenting Process Calibrator Using Source Mode Connect a pressure module and pressure source to the calibrator as Figure 19 shows The threads on the pressure modules accept 1 4 NPT fittings Use the supplied 1 4 NPT to 1 4 ISO adapter if necessary If necessary press die for SOURCE mode Press amp J The calibrator automatically senses which pressure module is attached and sets its range accordingly Zero the pressure module as described in the module s Instruction Sheet Modules vary in zeroing procedures depending on module type You MUST perform this step before you execute a task that sources or measures pressure

741B/743B - PCE Instruments

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