EXTECH MG325 [3/18] Introduction

3 MG325-en-GB_v1.1 3/16

1. Introduction

Congratulations on your purchase of the MG325 True RMS Insulation Resistance CAT IV 600V DMM.

The MG325 features a rugged design for heavy duty use. The MG325 measures Insulation

Resistance, AC/DC Voltage, Frequency, Leakage Current, Low Resistance, Continuity, and

Capacitance. Insulation Resistance tests are automatic ranging with 5 test voltages from 50V to

1000V. The MG325 can store and recall up to 99 measurements.

The MG325 is suitable for measuring the insulation resistance on elecrical equipment such as

transformers, motors, cables, switches, and appliances.

Proper use and care of this meter will provide years of reliable service.

Features

 DC and True RMS AC Voltage Measurments to 600V

 Insulation Resistance Measurements up to 200G

 Frequency of the AC Voltage

 Leakage Current Insulation test mode

 Capacitance Measurements

 Low Resistance and Continuity Measurements with ZERO function

 Auto Ranging measurments

 Polarization Index (PI) and Dielectric Aborption Ratio (DAR) tests

 Five (5) Insulation Resistance test voltages (50, 100, 250, 500, and 1000V)

 Insulation Resistance tests in 10% voltage steps (from 50% to 120% of range)

 Eight (8) Insulation Resistance measurement ranges (automatic ranging)

 Pass/Fail Comparator function for Insulation Resistance and Continuity

 Auto-discharge at end of test

 Output voltage alert light and display symbols

 Hand’s free test lock feature

 Manually store and recall up to 99 readings

 Overload indication

 Remote test probe for controlling the TEST button remotely

 Test leads, alligator clips, batteries, user manual, and case included

2. Safety

Warning and Caution safety label

Double Insulation

DC Direct Current

AC Alternating Current

Low Battery

Fuse symbol

High Voltage Alert

Audible beeper

Earth ground

Complies with EC standard