Extech MG320 Insulation Tester and True RMS Digital Multimeter
Everything you need for performing standard electrical checks in one package - Extech's MG320 is both an insulation tester and a true RMS digital multimeter.
The insulation tester function for the MG320 includes 5 test voltages - 50, 100, 250, 500 and 1000V - with insulation resistance measurement range of up to 20GΩ. The insulation tester also includes polarisation index (PI) and dielectric absorption ratio (DAR) measurement capabilities as well as a programmable timer, step voltage capability and a built-in comparison mode where the user can set PASS/FAIL values for insulation measurements.
As a digital multimeter, the Extech MG320 delivers consistent, accurate results even on irregular circuits thanks to true RMS built-in as standard. The MG320 can be used to measure AC/DC voltage to 600V, resistance to 20kΩ and also tests continuity.
Additional features of this combined insulation tester and digital multimeter include built-in memory storage for 99 readings (can be recalled on the meter), a backlit, 6000 count display with analogue bargraph, data hold function and automatic power off.
The Extech MG320 is CAT IV 600V safety rated.
Extech MG320 Insulation Tester/Digital Multimeter Key Features
- Dual capabilities - both a digital multimeter and an insulation tester in one portable, handheld unit
- Measure insulation resistance using 5 test voltages - 50, 100, 250, 500 and 1000V
- Insulation resistance measurement range to 20GΩ
- Performs polarisation index (PI) and dielectric absorption ratio (DAR) measurements
- Low resistance measurements with zero function
- Programmable timer - set the duration of the test
- Comparison mode - set your own pass/fail values for insulation measurements
- Automatic discharge of voltage test signals
- True RMS digital multimeter ensures accurate results when testing AC voltage
- Measure AC/DC voltage to 600V
- Measure resistance to 20kΩ
- Measure continuity
- Lock power on function for hands-free operation
- Manually store and recall up to 99 readings using built-in memory storage
- Backlit, 6000 count LCD display with analogue bargraph indicator
- High voltage and overload indicators
- Data hold function temporarily freezes current values shown on the screen
- Automatic power off when left idle to help save battery life
- Low battery indicator
- CAT IV 600V safety rated
What's Included?
- Extech MG320 Insulation Tester/Digital Multimeter
- Test Leads
- Alligator Clips
- 6 x AA Batteries
- Soft Case
Extech MG320 Technical Specifications
| Function | Range | Resolution | Accuracy |
|---|---|---|---|
| DC Voltage | 600V | 0.1V | ±(2.0% reading + 3 digits) |
| AC Voltage | 600V | 0.1V | ±(2.0% reading + 3 digits) |
| Specified from 5% of range to 100% of range | |||
| Input Impedance: 10MΩ Min Measured Voltage: 0.1V Frequency: 50 to 400Hz Input Protection: 600V DC and AC rms |
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| Low Resistance & Continuity | 20.00kΩ | 0.01Ω | ±(1.5% reading + 3 digits) |
| Open-circuit voltage is 5.0V approx Short-circuit current > 200mA 500mA/600V fuse protected input terminals |
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| Insulation Resistance Measurements | |||
| 50V Test Voltage | 0.01M to 19.99MΩ | 0.01MΩ | ±(3% + 5 digits) |
| 20.0M to 50.0MΩ | 0.1MΩ | ||
| 100V Test Voltage | 0.01M to 19.99MΩ | 1MΩ | ±(3% + 5 digits) |
| 20.0M to 100.0MΩ | 0.01GΩ | ||
| 250V Test Voltage | 0.01M to 19.99MΩ | 0.01MΩ | ±(1.5% + 5 digits) |
| 20.0M to 200.0MΩ | 0.1MΩ | ||
| 500V Test Voltage | 0.01M to 19.99MΩ | 0.01MΩ | ±(1.5% + 5 digits) |
| 20.0M to 199.9MΩ | 0.1MΩ | ||
| 200M to 500MΩ | 1mΩ | ||
| 1000V Test Voltage | 0.01M to 19.99MΩ | 0.01MΩ | ±(1.5% + 5 digits) |
| 20.0M to 199.9MΩ | 1MΩ | ||
| 200M to 2000MΩ | 1MΩ | ±(10% + 3 digits) | |
| 2.0G to 20.0GΩ | 0.1GΩ | ±(20% + 10 digits) | |
| Short Circuit Current <2mA | |||
| General Specifications | |||
| Display | 5999 count, backlit, LCD with bargraph | ||
| Ranging | Automatic | ||
| Storage Capacity | 99 records (01 to 99) | ||
| Input Impedance | >10MΩ | ||
| AC Response | True rms | ||
| ACV Bandwidth | 50Hz to 400Hz | ||
| Overrange Indication | ">" is displayed | ||
| Automatic Power Off | After 3 minutes of inactivity | ||
| Polarity | Automatic (no indication for postive); Minis (-) sign for negative | ||
| Measurement Rate | 2 times per second, nominal | ||
| Low Battery Indication | Battery symbol is displayed if battery drops below operating voltage | ||
| Battery | 6 x 1.5V AA batteries | ||
| Consumptin | 500mA (at a 1000V test voltage); 10mA in nominal conditions | ||
| Fuse | 500mA/600V fast blow | ||
| Enclosure | Double moulded, IP40 | ||
| Operating Temperature | 0 to 40°C (32 to 104°F) | ||
| Storage Temperature | -20 to 60°C (-4 to 140°F) | ||
| Operating Humidity | <85% | ||
| Storage Humidity | <90% | ||
| Operating Altitude | 2000m (7000ft) maximum | ||
| Weight | 0.7kg (1.5lbs) with batteries | ||
| Size | 225 x 103 x 59mm (L x W x D) | ||
| Safety | This instrument is designed in strict compliance with safety standard IEC61010, overvoltage standard (CAT IV 600V) and pollution degree II | ||
| SKU | MG320 |
|---|---|
| Manufacturer Part Code | MG320 |
| Country of Origin | China |
