M143 Portable Multifunction Calibrator

65 ppm AC/DC multifunction calibrator with extended voltage range 0 to 1000 V, current range 0 to 20 A and other basic functions within ultra portable, 9 kg body.

  • Ultra portable
  • 1000 V and 20 A ranges
  • 60 ppm accuracy

M143 Portable multifunction calibrator is cost saving solution for calibration of meters of electric quantities up to 1000 V and 20 A. Basic accuracy of 60 ppm in DC voltage is more than enough for calibration of 3½ and 4½ digit multimeters. Resistance function is covered by eight fix resistors in range from 10 Ω to 100 MΩ, other features are TC temperature sensor simulation and optionally RTD temperature sensor simulation. Thanks to its small dimensions and low weight the calibrator is ideal for field calibrations.

Calibration domain

M143 was designed for automated calibrations at production lines of panel meters, multimeters, transducers, measuring amplifiers, thermometers, and calibration laboratories where the calibrator can be applied as source of standard value for calibrations, verifications and adjustments of units under test.
RS-232 and optionally GPIB interface allow for remote control of the calibrator and time saving automated calibrations using SW package CALIBER/WinQbase.

DC voltage 0 - 1000 V
± 60 ppm / year
AC voltage 1 mV - 1000 V, 20 Hz - 10 kHz
sinusoidal & non-sinusoidal waveforms
± 500 ppm / year
DC current 0 - 20 A (1000 A with 140-50 Current Coil)
± 150 ppm / year
AC current 1 uA - 20 A, 20 Hz - 1 kHz (1000 A with 140-50 Current Coil)
sinusoidal & non-sinusoidal waveforms
± 700 ppm / year
Resistance 10 Ω - 100 MΩ, 8 fixed values
± 200 ppm / year
Temperature TC BCDEG2JKMNRST with cold junction compensation
RTD ± 0.1°C / year
Frequency 0.1 Hz - 2 MHz
± 100 ppm / year
Current Coil 140-50
Current Coil 140-50
multiplication factors x25 and x50, 1500 A maximum
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Adapter 143-90
Adapter 143-90
Pt1000 external temperature sensor