New Extech MG320 CAT IV Insulation Tester/True RMS MultiMeter View larger

Extech MG320 CAT IV Insulation Tester/True RMS MultiMeter

MG320

New product

20GΩ/1000V Insulation Tester with a True RMS MultiMeter

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$527.00 tax excl.

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Combines a portable 20GΩ/1000V Insulation Tester with a True RMS MultiMeter. Insulation tester includes PI/DAR modes, programmable timer, and a comparator for custom test configurations and quick results. Multimeter functions include AC/DC Voltage, Resistance, and Continuity Test. Manually store/recall up to 99 readings. Designed with rugged housing and large backlit 6,000 count LCD display with analog bargraph. Complete with test leads, alligator clip, 6 x AA batteries, and soft case.


  • Measure Insulation Resistance to 20GΩ
  • 5 Test Voltage ranges
  • Polarization Index (PI) and Dielectric Absorption Ratio measurements (DAR)
  • Low Resistance measurement with Zero function
  • Programmable Timer feature sets the duration of test
  • Comparison Mode allows user to set the Pass/Fail values for insulation measurements
  • Step Voltage (10% steps at 50% to 120% of range)
  • Auto-discharge of voltage test signal
  • Lock Power On Function for hands-free operation
  • Manually store/recall up to 99 readings
  • Backlit 6,000 count display with analog bargraph
  • High voltage and overload indication
  • Data Hold to freeze displayed reading
  • Auto Power Off and Low battery indication
  • Complete with test leads, alligator clip, 6 x AA batteries, and soft case

SpecificationsRangeResolutionBasic Accuracy
Insulation Resistance50MΩ, 100MΩ, 200MΩ,500MΩ, 2000MΩ, 1GΩ, 10GΩ, 20GΩ0.01MΩ±3%
Insulation Test Voltages50V, 100V, 250V, 500V, 1000V 0 to 10%
AC/DC Voltage600V0.1V±2%
Resistance20kΩ0.01Ω±1.5%
ContinuityYes
Dimensions/ Weight8.9 x 4.1 x 2.3" (225 x 103 x 59mm)/ 1.5lbs (0.7kg)

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