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M142 Multifunction Calibrator

10 ppm AC/DC multifunction calibrator with built-in multimeter, 30 A extended current range and variety of functions to calibrate most of the instruments your electrical laboratory will ever come across with ease.

  • 10 ppm accuracy
  • 30 A range, variety of functions
  • Built-in multimeter

Multifunction calibrator M142 is calibrator of electric quantities for application in calibration laboratories and in production lines where voltage, current, resistance, capacity and frequency meters are manufactured. Load capacity of the voltage output is 30 mA - enough for most high-consumption analogue power-meters. Installed harmonic and non-harmonic shape signals allow for testing meter sensitivity to distorted signals by a signal with various crest factor. Frequency modes, suitable for calibration of multimeters and time bases of oscilloscopes, have adjustable 6-digit frequency, amplitude and duty ratio of the output signal. The calibrator can measure temperature with TC and RTD temperature sensors to show it on display or use for cold junction compensation.

Built-in multimeter

Built-in process multimeter, standard part of M142 full version, can be used independently or simultaneously with source functions which makes testing transducers, regulators and evaluation units really easy. Using a single instrument you can evaluate output signals of various types of transducers and external sensors (strain gauge, pressure, torsion, strength, etc.), read them directly from calibrator display and use them in your calibrations.

User comfort

M142 calibrator is focused on user friendliness making calibrations simple and straightforward. Each function has its dedicated chunky button and all relevant details including total relative accuracy are shown on large LCD. Range of adapters for easier terminal connection and automation possibilities, relative deviation feature that can help you with UUT error calculation and easy keyboard-controlled adjustment procedure are just a few examples to prove the point.
GPIB and RS-232 interfaces are present in both versions so the calibrator can be operated via remote control or used in WinQbase/Caliber software calibration systems including the CamOCR module for automated optical UUT readouts.

DC voltage 0 - 1000 V
± 10 ppm / year
AC voltage 0 - 1000 V, 20 Hz - 100 kHz
sinusoidal & non-sinusoidal waveforms
± 180 ppm / year
DC current 0 - 30 A (1500 A with 140-50 Current Coil)
± 100 ppm / year
AC current 1 uA - 30 A, 20 Hz - 10 kHz (1500 A with 140-50 Current Coil)
sinusoidal & non-sinusoidal waveforms
± 500 ppm / year
DC Power & Energy 0.4 mW - 4.8 kW (240 kW with 140-50 Current Coil)
1-1999 s
± 510 ppm / year
AC Power & Energy 0.4 mW - 4.8 kW, 40 - 400 Hz (240 kW with 140-50 Current Coil)
1-1999 s, power factor -1 to +1
± 635 ppm / year
Resistance 0 Ω - 1 GΩ, resolution 4½ digits
± 100 ppm / year
Capacitance 700 pF - 100 uF, resolution 4½ digits
± 0.5 % / year
Temperature TC BEJKNRST with cold junction compensation
RTD ± 0.07°C / year
Frequency 0.1 Hz - 20 MHz
± 50 ppm / year

Process Multimeter

DC voltage 0 - 20 V
mVDC resolution down to 100 nV
± 100 ppm / year
DC current 0 - 25 mA
± 150 ppm / year
Resistance 0 Ω - 2.5 kΩ, resolution 4½ digits
± 200 ppm / year
Temperature TC BEJKNRST
RTD ± 0.1°C / year
Frequency 1 Hz - 15 kHz
± 50 ppm / year
Datasheets pdf pdf
Manuals pdf M142i: pdf
Slides pdf
Options overview pdf

Versions & Options:

M142 Extended version with all listed functions, interface RS232 and GPIB
M142i Base version with voltage, current and TC functions, interface RS232 and GPIB
All Meatest instruments are available with 3, 4 and 5-year extended warranties.
Delivered with EU plug. Can be swapped for other types on demand.


option 140-50 1500A current coil x25/x50
option 140-01 Metal pad cable adapter for handheld testing, pt100 thermometer
option 10 Test cable 1000V/32A, 1m, black
option 11 Test cable 1000V/32A, 1m, red
option 20 Test cable BNC – BNC, 1m
option 30 Test cable BNC – banana, 1m
option 40 Cable adapter Canon 25 / 2 x banana for DC voltage/current measurement
option 60 Cable adapter Canon 25 / 4 x banana for 4W resistance measurement
option 70 Cable adapter Canon 25 / 4 x banana (female) for 4W resistance simulation
option 80 Cable adapter Canon 25 / 2 x banana for mVDC and TC measurement
option 90 Pt100 external temperature sensor
option 100 Adapter for ¾” output terminals spacing
option 110 10Ω Voltage-from-Current terminal adapter
GPIB cable IEEE488-IEEE488 cable, 2m
RS232 adapter RS232-USB generic adapter
RS232 cable male-female RS232 cable, 2m