Extech MG325 Insulation Multimeter

SKU: EXTEMG325
  • Test voltages from 0 to 1000V for measuring insulation resistance up to 200GΩ
  • Multimeter measurements for voltage, capacitance, resistance and frequency
  • Insulation testing benefits from PI/DAR, step voltage and auto discharge
More Info
Discontinued

Extech MG325 Insulation Multimeter

This product has now been discontinued.

The Extech MG325 Insulation Multimeter is a clever combination of an insulation tester and a multimeter. It has test voltages of 50V, 100V, 250V, 500V, and 1000V, which allows it to measure insulation resistance up to 200GΩ over 11 different ranges with a maximum resolution of 0.001MΩ and basic accuracy of ±(3% + 3d).

Insulation testing benefits from polarisation index and dielectric absorption ratio as well as step voltage testing. Comparison mode allows the user to set PASS/FAIL limits for insulation measurements and there is automatic discharge of the voltage test signal.

Multimeter functions on the Extech MG325 include AC/DC voltage (600V), leakage current (2000µA), resistance (10MΩ), low resistance (100Ω), capacitance (500µF), and frequency (1kHz). It is also capable of performing a continuity test.

The backlit digital screen is capable of showing two readings at once and there is a dynamic bar graph that allows the user to see fluctuating readings in real time. Data hold freezes the displayed reading and there are additional LED warnings for high voltage and LCD overload.

The appropriate function is selected with the Extech MG325’s clear dial and there are numerous push buttons to help use the tester’s other functionality. There is a 99-reading internal memory that can be recalled to the screen.

The Extech MG325 has a Cat IV 600V safety rating and is covered by a one-year warranty. It comes supplied with a remote probe, test leads, crocodile clip, batteries and a soft carry case.

Extech part number: MG325

Key Features

  • Test voltages: 50V, 100V, 250V, 500V, 1000V
  • Insulation testing: 0 to 200GΩ
  • AC/DC voltage: 0 to 600V
  • Leakage current: 0 to 2000µA
  • Resistance: 0 to 10MΩ
  • Low resistance: 0 to 100Ω
  • Capacitance: 0 to 500µF
  • Frequency: 0 to 1kHz
  • Step voltage & PI/DAR
  • Comparison mode with PASS/FAIL
  • Simple dial and push button operations
  • Manually store and recall 99 readings
  • One-year warranty

What's In The Box?

  • Extech MG325 Insulation Multimeter
  • Remote probe
  • Test leads
  • Crocodile clip
  • 6 x AA batteries
  • Soft case
  • Instructions for Extech MG325
Specification

Insulation Resistance

  • Ranges: 50MΩ, 100MΩ, 200MΩ,500MΩ, 2000MΩ, 1GΩ, 10GΩ, 20GΩ, 50GΩ, 100GΩ, 200GΩ
  • Max resolution: 0.001MΩ
  • Accuracy: ±(3%+3d)
  • Insulation Test Voltages: 50V, 100V, 250V, 500V, 1000V
  • Test voltage accuracy: 0 to 20%

AC/DC Voltage

  • Range: 600V
  • Resolution: 0.01V
  • Accuracy: AC: ±(1.5%+5d)/ DC: ±(2%+3d)

Leakage Current

  • Range: 2000µA
  • Resolution: 10µA
  • Accuracy: ±(10%+3d)

Resistance

  • Range: 10MΩ
  • Resolution: 0.01kΩ
  • Accuracy: ±(3%+3d)

Low Resistance

  • Range: 100Ω
  • Resolution: 0.01Ω
  • Accuracy: ±(1.5%+5d)

Capacitance

  • Range: 500µF
  • Resolution: 0.1nF
  • Accuracy: ±(5%+5d)

Frequency

  • Range: 1kHZ
  • Resolution: 0.1HZ
  • Accuracy: ±(0.1%+3d)
  • Continuity (audible): Yes
  • Dimensions/ Weight: 8.9 x 4.1 x 2.3" (225 x 103 x 59mm)/ 1.5lbs (0.7kg)