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GMC Instruments METRAHIT MULTICAL Universal Calibrator, Simulator and Multimeter
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Item Number: METRACAL MC
Manufacturer: GMC Instruments (Gossen Metrawatt)
Manufacturer Part No: M245A
* Whole number only
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 GMC Instruments METRAHIT MULTICAL Universal Calibrator, Simulator and Multi |
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GMC Instruments METRAHIT MULTICAL Universal Calibrator, Simulator and Multimeter
Applications
Process engineers can use the METRAHIT MULTICAL as a calibrator and a multimeter simultaneously, e.g. in order to simulate sensor conditions at the input of a transmitter while measuring and saving the output signal.
If the USB X-TRA plug-in infrared interface adapter (accessory) is attached to the instrument, measurement and calibration results can be uploaded to a PC, where they can be recorded and printed out as a calibration report. The multimeter can also be used as a data logger. METRAwin 10/METRAHit PC software (accessory) allows for convenient evaluation and display of measurement data, and METRAwin 90-2 (accessory) can be used to create, upload and download calibration procedures, as well as for the generation of calibration certificates.
Calibrator with Loop Current Measuring Instrument
Universal Calibration Standard
Integrated electronics generate mV, V and mA signals. Beyond this, theyre capable of simulating thermovoltages for various types of thermocouples for predefined temperatures (°C or °F), as well as for various Pt and Ni temperature sensors.
Frequency and Pulse Run Generator
Continuous frequency signals can be transmitted by the METRAHIT MULTICAL for testing SPCs, energy metering devices, flow rates and more. Amplitude is adjustable for the generated square-wave pulses, which are used to simulate sensor pulses.
Calibration and Simulation
Measuring transducers with a wide variety of input signals (voltage, thermovoltage, RTD and 2-wire resistance sensors etc.) can be directly connected and calibrated. If a multimeter is used (e.g. METRAHITXTRA), respective values can be measured at the measuring transducers output, transmitted to a PC via an adapter if desired, displayed with the help of METRAwin 90-2 software and compared with the appropriate calibration specifications. Setpoint values and actual values are displayed, or printed as a certificate. When operated in the mA sink mode, the METRAHIT MULTICAL simulates a 2-wire transmitter and retrieves the selected current value from the measuring sequence.
Data Storage (16 MBit / 46,000 measured values)
The calibrator is connected to a PC with the attached USB X-TRA interface adapter (accessory). Individual values, intervals and ramps which have been created with the help of METRAwin 90-2 software (accessory) can be saved as data files, uploaded to the calibrator and saved to non-volatile memory.
Read-Out Modes for Encoding and Sink Functions
Calibration signals can be read out either manually (numerically with key entries), or automatically by means of intervals with intermediate steps, or as a ramp in a stepless fashion.
The METRAHIT MULTICAL can thus be used as a precision pulse generator for dynamic testing. Depending upon individual needs, desired dynamic response can be derived from, for example, the full-scale value and the number of intermediate steps (intervals), or rise and dwell periods (ramp). This is especially helpful for long-term testing of laboratory and panel recorders, as well as measuring transducers, and for one-man control rooms.
Numeric Read-Out
Calibration values are set and read out manually with the help of the instruments keypad immediately after the calibration function has been selected.
Interval
Calibration values are read out continuously in steps between the minimum and maximum values selected at the device to be calibrated in this read-out mode. The subsequent step can be triggered automatically (time per step: 1 sec. ...60 min.) or manually.
Ramp
Calibration values are read out in a stepless fashion between the minimum and maximum values selected at the device to be calibrated in this read-out mode.
Ramp duration for rising and falling ramps, as well as dwell time at minimum and maximum values, can be set within a range of 1 second to 60 minutes.
Temperature Simulation
The ten most common sensor types are available for the simulation of thermovoltages. Thermovoltages can be read out with reference to an internal (socket temperature) or an external reference junction.
Temperature for the external reference junction can be set at the calibrator or with a PC. This eliminates the need to connect the device to be calibrated with the calibrator via the respectively required compensating lead. A copper conductor between the calibrator and the device to be calibrated is sufficient in this case.
Features:
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Universal calibrator, simulator and multimeter
mA / mV... V / °C (Pt100/1000, Ni100/1000,
thermocouples: J, L, T, U, K, E, S, R, B, N) / 30 ... 2000
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Dual mode ¡V simultaneous calibration and measurement (U / I)
- Measuring and encoding in absolute terms and as percentage (scaled)
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Memory for measurement results: 16 MBit
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Frequency and pulse run generators: 1 Hz to 2 kHz
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Ramp and staircase functions
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METRAwin µ90-2 interface and calibration software
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Transmitter simulator (sink: 0... 24 mA)
- Rugged, EMC compliant design
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Precision multimeter (V, A, , F, Hz, °C / F) 30,000 (60,000) digits and triple display
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TRMS AC measurement to 1 kHz
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