Fluke 725 Uživatelský manuál

® 725 Multifunction Process Calibrator Users Manual October, 1998 Rev.3, 5/04 © 1998-2004 Fluke Corporation, All rights reserved. All product na

725Users Manualviii18. Connections for Sourcing Pressure... 3619.

1Multifunction Process CalibratorIntroductionYour Fluke 725 Multifunction Process Calibrator (referredto as “the calibrator”) is a handheld, battery-o

725Users Manual2Table 1. Summary of Source and Measure FunctionsFunction Measure Sourcedc V 0 V to 30 V 0 V to 10 Vdc mA 0 to 24 mA 0 to 24 mAFrequenc

Standard Equipment3Standard EquipmentThe items listed below and shown in Figure 1 are includedwith your calibrator. If the calibrator is damaged orsom

725Users Manual4W WarningTo avoid possible electric shock or personal injury:• Do not apply more than the rated voltage, as marked on the calibrator,

Safety Information5 W Warning• When using a pressure module, make sure the process pressure line is shut off and depressurizedbefore you connect it o

725Users Manual6100%25%25%RECALLSTORESETUP0%StackableTest LeadsTL75Test Lead SetAC72Alligator ClipsVmAMEASURESOURCE / MEASURE30V MAX ALL TERMINALS4W3W

Safety Information7Table 2. International SymbolsAC - Alternating current Double insulatedDC - Direct current BatteryEarth ground Refer to the manual

725Users Manual8Getting Acquainted with the CalibratorInput and Output TerminalsFigure 2 shows the calibrator input and output terminals.Table 3 expla

Getting Acquainted with the Calibrator9Table 3. Input/Output Terminals and ConnectorsNo Name DescriptionAPressure moduleconnectorConnects the calibrat

LIMITED WARRANTY AND LIMITATION OF LIABILITYEach Fluke product is warranted to be free from defects in material and workmanship under normal use and s

725Users Manual10KeysFigure 3 shows the calibrator keys and Table 4 explainstheir use.V mALOO PV mATC RTD˚C ˚FHz100%25%25%RECALLZEROMEASSOURCESTORE

Getting Acquainted with the Calibrator11Table 4. Key FunctionsNo Name DescriptionA O Turns the power on or off.B l Selects voltage, mA or Loop Power m

725Users Manual12Table 4. Key Functions (cont.)No Name DescriptionL LCycles through : Slow repeating 0 % - 100 % - 0 % ramp Fast repeating 0 % - 100 %

Getting Acquainted with the Calibrator13DisplayFigure 4 shows the elements of a typical display.Low BatterySymbolLoopAnnunciatorMemory Locationsfor Ca

725Users Manual14Getting StartedThis section acquaints you with some basic operations ofthe calibrator.Proceed as follows to perform a voltage-to-volt

Shut Down Mode15V mALOOPV mATCRTD˚C ˚FHz100%25%25%RECALLZEROMEASSOURCESTORESETUP0%MULTIFUNCTION CALIBRATOR725sh39f.epsFigure 5. Voltage-to-Voltage

725Users Manual16Contrast AdjustmentNoteAvailable with V2.1 Firmware or greater. Toidentify firmware version, press and hold Jwhen powering up. The fi

Using Measure Mode17Using Measure ModeMeasuring Electrical Parameters (Upper Display)To measure the current or voltage output of a transmitter,or to m

725Users Manual18RedTEST DC PWR+–+––+BlackV mALOO PV mATC RTD˚C ˚FHz100%25%25%RECALLZEROMEASSOURCESTORESETUP0%MULTIFUNCTION CALIBRATOR725sh18f.eps

Using Measure Mode19Measuring Electrical Parameters (Lower Display)To measure the electrical parameters using the lowerdisplay, proceed as follows:1.

iTable of ContentsTitle PageIntroduction...

725Users Manual20Measuring TemperatureUsing ThermocouplesThe calibrator supports ten standard thermocouples,including type E, N, J, K, T, B, R, S, L,

Using Measure Mode21Table 5. Thermocouple Types AcceptedType Positive LeadPositive Lead (H)Color Negative Lead Specified RangeMaterialANSI* IEC**Mater

725Users Manual22VmAMEASURESOURCE / MEASURE30V MAX ALL TERMINALS4W3WVHzRTD mA+mA-TCCOM COMLOOPProcess TemperatureWarning 30 V maximum to TCTC Miniplu

Using Measure Mode23Using Resistance-Temperature Detectors (RTDs)The calibrator accepts RTD types shown in Table 6. RTDsare characterized by their res

725Users Manual24Table 6. RTD Types AcceptedRTD Type Ice Point (R0) Material α Range (°C)Pt100 (3926) 100 Ω Platinum 0.003926 Ω/°C -200 to 630Pt100 (3

Using Measure Mode25RTDResistanceto bemeasuredRTDRTD2W3W4WVmAMEASURESOURCE / MEASURE30V MAX ALL TERMINALS4W3WVHzRTD mA+mA-TCCOM COMLOOPVmAMEASURESOURC

725Users Manual26Measuring PressureMany ranges and types of pressure modules are availablefrom Fluke. See “Accessories” near the back of thismanual. B

Using Measure Mode27To avoid damaging the pressure module fromoverpressure, never apply pressure above therated maximum printed on the pressuremodule.

725Users Manual28DifferentialModuleTankHLIsolationValveGageModuleV mALOO PV mATC RTD˚C ˚FHz100%25%25%RECALLZEROMEASSOURCESTORESETUP0%MULTIFUNCTION

Using Source Mode29Using Source ModeIn SOURCE mode, the calibrator generates calibratedsignals for testing and calibrating process instruments;supplie

725Users ManualiiUsing Thermocouples... 20Using Resistance-Tem

725Users Manual30LoopPowerSupplyReadout orController+24 VBlackRed+–V mALOO PV mATC RTD˚C ˚FHz100%25%25%RECALLZEROMEASSOURCESTORESETUP0%MULTIFUNCTIO

Using Source Mode31VmAMEASURESOURCE / MEASURE30V MAX ALL TERMINALS4W3WVHzRTD mA+mA-TCCOM COMLOOPVmAMEASURESOURCE / MEASURE30V MAX ALL TERMINALS4W3WVHz

725Users Manual32Simulating ThermocouplesConnect the calibrator TC input/output to the instrumentunder test with thermocouple wire and the appropriate

Using Source Mode33TEST DC PWR++––+Color dependson type of TCV mALOO PV mATC RTD˚C ˚FHz100%25%25%RECALLZEROMEASSOURCESTORESETUP0%MULTIFUNCTION CAL

725Users Manual34V mALOOPV mATCRTD˚C ˚FHz100%25%25%RECALLZEROMEASSOURCESTORESETUP0%MULTIFUNCTION CALIBRATOR725BLACKSENSOR TERMINALSBLACKRED1234sh4

Using Source Mode35Sourcing PressureThe calibrator sources pressure by measuring pressuresupplied by a pump or other sources, and displaying thepressu

725Users Manual361. Connect a pressure module to the calibrator asshown in Figure 18. The threads on the pressuremodules accept standard ¼ NPT pipe f

Setting 0 % and 100 % Output Parameters37Setting 0 % and 100 % OutputParametersFor current output, the calibrator assumes that 0 %corresponds to 4 mA

725Users Manual38Auto Ramping the OutputAuto ramping gives you the ability to continuously apply avarying stimulus from the calibrator to a transmitte

Calibrating a Transmitter39Calibrating a TransmitterUse the measurement (upper display) and source (lowerdisplay) modes to calibrate a transmitter. Th

Contents (continued)iiiExternal Fluke Pressure Module Compatibility ... 53Specifications...

725Users Manual40RedTEST DC PWR+–+––+BlackV mALOO PV mATC RTD˚C ˚FHz100%25%25%RECALLZEROMEASSOURCESTORESETUP0%MULTIFUNCTION CALIBRATOR725sh44f.eps

Calibrating a Pressure Transmitter41Calibrating a Pressure TransmitterThe following example shows how to calibrate a pressuretransmitter.Connect the c

725Users Manual42Hand PumpSIGNALTEST+–PressureModuleRedBlackMeasure mASource Pressure 24 V Loop PowerEnabled MULTIFUNCTION CALIBRATOR725V mALOO PV

Calibrating an I/P Device43Calibrating an I/P DeviceThe following test allows you to calibrate a device thatcontrols pressure. Proceed as follows:1.

725Users Manual44SIGNALTEST+–PressureModuleRedBlackMeasurePressureSource mAV mALOO PV mATC RTD˚C ˚FHz100%25%25%RECALLZEROMEASSOURCESTORESETUP0%MULT

Testing an Output Device45Testing an Output DeviceUse the source functions to test and calibrate actuators,recording, and indicating devices. Proceed

725Users Manual46Remote Control CommandsYou can control the calibrator remotely from a PC runninga terminal emulator program. The remote controlcomman

Remote Control Commands47Table 8B. Remote Control Lower Display (cont)Serial Input Descriptionk KHz sourceH Hz measurementh Hz sourceP CPM measurement

725Users Manual48Table 8B. Remote Control Lower Display (cont)Serial Input Description0-9 Enter a source value using ascii characters 0,1,2,...9,-,.te

Replacing the Batteries49Replacing the BatteriesWWarningTo avoid false readings, which could lead topossible electric shock or personal injury,replace

725Users Manualiv

725Users Manual50Battery andCompartmentFuseCompartmentsh38f.epsFigure 23. Replacing the BattteriesMaintenanceCleaning the CalibratorW WarningTo avoid

Maintenance51pack the calibrator securely, using the original shippingcontainer if it is available. Send the equipment postagepaid and insured, to the

725Users Manual52186691910121321820173453716111415212322zi45f.epsFigure 24. Replacement Parts

Accessories53AccessoriesFor more information about these accessories and theirprices, contact your Fluke representative. PressureModules and Fluke mod

725Users Manual54Table 11. Pressure ModulesFluke Model Number Range Type and MediaFluke-700P00 0 to 1” H2O differential, dryFluke-700P01 0 to 10” H2O

Accessories55Table 11. Pressure Modules (cont.)Fluke Model Number Range Type and MediaFluke-700P29 0 to 3,000 psi gage, wetFluke-700P30 0 to 5,000 psi

725Users Manual56SpecificationsSpecifications are based on a one year calibration cycleand apply from +18 °C to +28 °C unless stated otherwise.All spe

Specifications57DC mA Measurement and SourceRange ResolutionAccuracy,(% of Reading + Counts)24 mA 0.001 mA0.02 % + 2Temperature coefficient -10 °C to

725 Users Manual 58 Frequency Source Range Resolution Accuracy (% of output frequency) 2.0 to 1000.0 CPM 0.1 CPM ± 0.05 % 1 to 1000 Hz 1 Hz

Specifications59 Loop Power SupplyVoltage: 24 VMaximum current: 22 mAShort circuit protectedRTD Excitation (simulation)Allowable Excitation by RTD typ

vList of TablesTable Title Page1. Summary of Source and Measure Functions... 22.

725Users Manual60Pressure MeasurementRange Resolution Accuracy UnitsDetermined bypressure module5 digits Determined bypressure modulepsi, inH2O@4 °C,

61Index—0—0% output parameter, setting, 36—1—100% output parameter, setting, 36—4—4 to 20 mA transmittersimulating, 28—A—Accessories, 52Auto ramping o

725Users Manual62—K—Key functions (table), 11Keys, 10—L—Loop powersimulating, 28supplying, 16—M—Measure functions, summary (table), 2Measure mode, 16M

725Users Manualvi

viiList of FiguresFigure Title Page1. Standard Equipment........................