Presentation on theme: "7526A Precision Temperature/Pressure Process Calibrator"— Presentation transcript:
1 7526A Precision Temperature/Pressure Process Calibrator
2 Introducing the 7526A Precision Process Calibrator Value propositionTypical applicationsKey features & benefitsProduct overviewProduct featuresSummary specsOptions & accessoriesA “best fit” for process instrumentation calibration
3 7526A Value PropositionBalances precision and versatility with costThe 7526A is less expensive than high-end multi-product calibrators, yet more precise and versatile than handheld field calibratorsCalibrates wide ranging workload7526AThe 7526A meets the needs of labs that cannot fund higher priced instruments while providing the precision required to get the job doneMore precise than handheld process calibratorsLess expensive than high-end multi-product calibrators like the Fluke 5080 ($13k)Poor man’s calibratorVersatility, precision & valueThe 7526A offers an isolated measurement channel allowing it to precisely, and simultaneously, source and measure temperature & electrical parameters. Pressure measurement can be viewed in both displays in different units of measure.
4 Typical Applications Industry Applications Calibration workload Pharmaceutical/Bio-techMonitor temp/pressure process, monitor freezers/ovens/incubators, freeze-drying, SIPTemp/pressure transmitter, pressure gauges, handheld calibrator, temp readout, chart recorderFoodMonitor process temp, food dryers, monitor cold storage, monitor refrigeration equipment, SIPTemp/pressure transmitter, temp readout, limit alarm, PID controllerOil & GasMonitor pipeline provers, custody transferTemp/pressure transmitter, pressure gauges, flow transmitterChemicalsMonitor temp/pressure reaction conditions, refrigeration, boilersTemp/pressure transmitter, limit alarms, pressure gaugesElectronic Equipment ManufacturerManufacturing electronic devicesAutomatic test station3rd Party Calibration LabService industries listed aboveAll of the aboveSame customers that would purchase the 914XBenchtop rather than field
5 7526A Key Features & Benefits Improved thermocouple accuracyCan calibrate Documenting Process Calibrators (2:1 TUR) and nearly all handheld temperature & pressure calibratorsSwitch test(unique to 7526A)Increased workload. Not every temperature source, such as a drywell, includes a switch-hold function. Pressure sources do not.Simultaneous source and measureCalibrate more DUTs in less time. See results of an adjustment immediately.MET/CAL® Calibration Software compatibleWrite automated procedures, create reports.ValueCosts less than a DPC, highly versatile, precise but competitively priced.
6 7526A Product Overview Precision Temperature/Pressure Process CalibratorSources and measures:Thermocouples (13 types)RTDs (9 types)Thermistors (YSI-400)Voltage (0 to 100 Vdc)Resistance (0 Ω to 4 kΩ)Current (100 mA output / 50 mA input)Measure only:Pressure (0 to 700 bar / 10,000 psi)Used to calibrate temp/pressure transmittersTransmitters primarily used in process industries such as pharma, bio-tech, food, chem, petrol, etc.Sources and measures TC, RTD, voltage, resistance, currentMeasures pressure when combined with a pressure module or transmitter
7 7526A Product Overview (Left Half) DC voltage output terminals0 Vdc to 100 VdcAccuracy: 30 ppm (+3 μV)DC current output terminals0 mA to 100 mAAccuracy: 50 ppmRTD/Ω output terminals (two-wire)5 Ω to 4 kΩ,Accuracy: ± 0.05 ºC, –200 to 630 ºCTerminal binding posts are made of a special copper alloy to decrease thermal EMFs.Discreet wires or standard banana plugs can be used.The HI/LO pairs are distanced for standard dual banana plugsFour-wire RTD/Ω input terminalsAccuracy: ±0.02 ºCPt 385, 100 Ω, –80 to 100 ºCIsolated pressure module inputAccepts Fluke 700 & 525A series pressure modulesThermocouple input/output terminalAccuracy: ± 0.1 ºC–100 to 800 ºC (type K)
8 7526A Product Overview (Right Half) Isolated input controlsdc voltage/currentSwitch test mode24 Vdc power supply250 Ω HART resistorPressure input modeNumeric and secondary function keysCursor controlsInput/Output Function Keysdc voltage/currentTC/RTDPressure modeUnit typeStby/OperateIsolated input terminalsAllows simultaneous source and measuredc voltage (0 to 100 V)dc current measurement (0 to 50 mA)Switch-test input24 V dc loop power supply
9 7526A Product Overview (Rear Panel) Power line voltage selector and fuse compartmentPower switch1) Serial to USB adapter cable included as stdRS-232 PortGPIB IEEE-488Service portChassis groundAC power inlet120/240 AC
10 7526A Product Features STBY/OPR In Standby mode, changes to the output value are not applied until you select the Operate modeIn Operate mode, each change to the output value is applied immediatelyVoltages more than 30 V are not applied. The mode automatically reverts to Standby for safetyIn Thermocouple mode, move through the thermocouple types (including millivolts)In RTD/Ohms mode, move through the RTD types (including ohms)In Pressure mode, move through the pressure units1) STBY/OPR is a safety feature that prevents unwanted application of source voltageSelect a secondary function from the numeric keypad
11 7526A Product Features HART Enables a 250 Ω internal resistor Without the loop resistance in place, the DC power supply would “short out” the communicator’s AC voltage signalThe presence of a loop resistor in the circuit prevents the DC power supply from “loading” the AC voltage signal by the communicator.Some minimum loop impedance is needed so that the HART signal can be ‘seen’ or ‘read’ by a HART master, like a HART communicator or HART modem.∿∿↓↓HARTtransmitterHART communicator250 < R < 1100PowersupplyComputer“HART” is an acronym for Highway Addressable Remote Transducer.Superimposes digital communication signals [frequency shift keying (FSK)] on top of the 4-20mA signal; does not interfere with the analog signal.Enables two-way field communication to take place.Additional information beyond the normal process variable (P.V.) is communicated to/from a smart field instrument.LOOP PWRTurns on an internal 24 Vdc power supply in series with the current measurement circuitUsed to power 4 – 20 mA transmitters
12 7526A Product Features RTD and Ohms Measure/Source Measures & Sources all common RTD typesStores CVD coefficients for up to five RTDsStores coefficients for one SPRT (ITS-90)Resistance from 0 Ω to 4 kΩ.RTD types:Pt Ω, 200 Ω, 500 Ω, 1000 ΩPt ΩPt 3916 (JIS) 100 ΩNi ΩCu 427 (Minco) 10 ΩYSI 400 thermistor1) Stores CVD coefficients for five unique RTDs
13 7526A Product Features Thermocouple (TC) Measure/Source Measure & sources all common thermocouple types and basic millivolts from to 75.0 mVThermocouple types: B, C, E, J, K, L, N, R, S, T, U, XK, BPPressure MeasureThe isolated pressure display uses the same physical pressure connector as the primary displayBoth displays can show pressure at the same timeThe same source can be shown in different pressure unitsCan display pressure source in two different UoM
15 7526A Product Features Preset setpoints Nine preset output setpoints can be stored and recalled for each of these output modes:VoltageCurrentEach thermocouple type (including mV)Each RTD type (includes each of the five custom curves)Switch Test ModeWhen in Switch Test mode the Calibrator can sense a contact transition (closed or opened)At the time of the transition, the Calibrator records the value and units shown on the primary display1) Switch test can test limit alarm switches
16 7526A Product Features Remote Interface RS-232 or GPIB (IEEE-488) can control 7526A from a PCA serial to USB adapter cable is included as standard with the 7526AIndividual commands can be typed into terminal emulator softwareMET/CAL compatible – write automated procedures and generate calibration reports1) FSC (function select code) – describes instrument functions so that the instrument can be called out in Met/Cal procedures
17 7526A WorkloadTwo-wire transmitters, calibrators, Pressure to Current converters, transducers, signal conditioners and temperature probesare all examples of the 7526A’s workload.
20 Convert Spec in PPM to % Reading Convert a spec in ppm to % error of reading
21 7526A Standard & Optional Equipment Included in the box:7526A Precision Process CalibratorUsers Manual CD-ROMGetting StartedAC Mains CordThermocouple Shorting JumperNIST Traceable Calibration ReportUSB to Serial Adapter CableOptions and accessories:5520A-525A Leads kitY7526A Rack Mount kitFluke 700 and 525A-P series pressure modulesMET/CAL with 7526A Function Select Code (FSC)MET/CAL 7526A calibration procedureOptional accredited calibration