[Obsolete] M191 Insulation Tester Calibrator

M191 has been replaced by M194 High Resistance Decade.

High resistance calibrator for insulation testers up to 10 kV. Other insulation related functions include HV capacitance, short current, dielectric and polarization parameters and timer test.

  • Six different calibration functions
  • 1 TΩ and 10 kVdc limits
  • Test voltage and current indication

M191 Insulation Tester Calibrator is based on 1 TΩ programmable high resistance decade with 10 kV DC compliance, coupled with test voltage meter. This setup allows for calibration of UUT's test voltage, short current verification, timer function verification and calibration of dielectric parameters measurement including polarization index (PI), dielectric absorption ratio (DAR) and polarization ratio (PR).

Calibration domain

M191 is designed for thorough calibration of insulation testers, megaohmmeters, HIPOT testers or any other DC high resistance meters and safety testers with test voltage up to 10 kV. With M191's pallete of functions you'll no longer need multiple instruments and complex setups for high voltage calibrations.
RS-232 and GPIB interface allow for remote control of the calibrator and time saving automated calibrations using SW package CALIBER/WinQbase.

DC resistance 10 kΩ - 1 TΩ, 10.5 kV max.
± 0.1% / year
DC capacitance 10 nF, 50nF, 100 nF, 5.25 kV max.
± 0.5% / year

Test Signal Meter

DC voltage 50 V - 10.5 kV
± 0.5% / year
DC current 0 - 5 mA
± 0.2% / year