We use cookies to make your experience better. To comply with the new e-Privacy directive, we need to ask for your consent to set the cookies. Learn more.
The METRACAL MC, compact multifunction process calibrator convinces by ruggedness, simple handling, highest functionality, precision and PC system ability.
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, they’re 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.
Integrated electronics generate mV, V and mA signals. Beyond this, they’re 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 METRACAL MC 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. METRAHIT XTRA), respective values can be measured at the measuring transducer’s 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 METRACAL MC 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.
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 METRACAL MC 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 instrument’s 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.
| Real-Time Clock | |
| Time format | DD.MM.YYYY hh:mm:ss,0 |
| Resolution | 0.1 s |
| Accuracy | ±1 min./month |
| Temperature Influence | 50 ppm/K |
| Reference Conditions | |
| Ambient temperature | +23 °C ±2 K |
| Relative humidity | 40 ... 60% |
| Measured quantity frequency for AC | 45 … 65 Hz |
| Measured quantity waveform for AC | Sinusoidal, deviation between RMS and rectified value < 0.1% |
| Battery voltage | 3.0 V ±0.1 V |
| Display | |
| LCD panel (65 x 35 mm) with display of up to 3 measured values, unit of measure, type of current and various special functions. | |
| Display / char. height | 7-segment characters Main display: 12 mm Auxiliary displays: 7 mm |
| Number of places | 4¾ places 30,999 steps |
| Overflow display | “OL” or “-OL” appears |
| Polarity display | “–” sign is displayed if plus pole is connected to “⊥” |
| LCD Test | All display segments available during operation of the METRACAL MC are activated after the instrument is switched on. |
| Power Supply | |
| Battery | 2 ea. 1.5 V mignon cell (AA), alkaline manganese per IEC LR6 or equivalent rechargeable battery |
| Service life | With alkaline manganese (2600 mAh) If voltage drops below 1.8 V, the instrument is switched off automatically. |
| Battery test | Battery capacity display with battery symbol in 4 segments. Querying of momentary battery voltage via menu function. |
| Mains Power | With NA X-TRA power pack |
| Power Saving Circuit | |
| The device is switched off automatically if the measured value remains unchanged for a long period of time, and if none of the controls are activated before a selected period of time in minutes elapses. In the case of the simulator, the output is switched off first, followed by the display one minute later, if no controls have been activated. Automatic shutdown can be deactivated (APoFF = ON). |
| Fuses | |
| Fuse links | DMM (mA current measuring ranges): FF0.63A/400V, 5 mm x 20 mm Breaking capacity ≥ 1.5 kA at 380 V AC with ohmic load Calibrator: FF0.63A/400V, 5 mm x 20 mm Breaking capacity ≥ 1.5 kA at 380 V AC with ohmic load |
| Multimeter Electrical Safety | |
| Protection Class | II per DIN EN 61010-1:2011/VDE 0411-1:2011 |
| Measuring category | II |
| Operating voltage | 300 V |
| Pollution degree | 2 |
| Test Voltage | 2.2 kV~ per DIN EN 61010-1:2011/ VDE 0411-1:2011 |
| Electromagnetic Compatibility (EMC) | |
| Interference emission | EN 61326-1:2013 class B |
| Interference immunity | EN 61326-1:2013 EN 61326-2-1:2013 |
| Ambient Conditions | |
| Accuracy range | 0 °C … +40 °C |
| Operating temp. range | -10 °C … +50 °C |
| Storage temp. range | -25 °C … +70 °C (without batteries) |
| Relative humidity | 40% … 75%, no condensation allowed |
| Elevation | To 2000 meters |
| Mechanical Design | |
| Protection | IP 65 |
| Dimensions | 200 x 87 x 45 mm |
| Weight | Approx. 430 g with batteries |
Write Your Own Review
- Process engineers can use the METRACAL MC 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.