The Digital Ground Resistance Tester Model 3640 performs ground resistance measurement. This direct reading tester measures from 10MΩ to 1999Ω, and is auto-ranging, so it automatically seeks out the optimum measurement range. The Model 3640 is easy to use – simply connect the leads, press to measure, and read. The LCD (nearly 3/4″ high) also indicates low battery status, over range, and lead reversals.
The Model 3640 comes with 3 color-coded terminals to aid in easy hookup. Three LED indicators on the front panel continuously warn the user of any measurement problems to ensure accurate and reliable tests. The Model 3640 is fuse protected up to 250VAC to protect the instrument against voltage into the test leads. In the event of a system fault, it can withstand 250VAC with spikes of 3000VAC or 1000VDC.
Here’s a breakdown of its key features:
Functionality:
- Measures ground resistance from 10 milliohms up to approximately 2000 ohms.
- Performs both 3-point Fall-of-Potential and 2-point continuity testing.
- Auto-ranging feature automatically selects the optimal measurement range.
User-friendliness:
- Simple push-button operation for easy measurements.
- Large LCD display with clear readings.
- Color-coded terminals for straightforward connection.
- Three LED indicators warn of potential measurement issues.
Additional features:
- Fuse protection up to 250VAC for safety.
- Low battery indicator.
- Overrange indicator.
- Compact and lightweight design for portability.
- Direct reading display eliminates the need for manual calculations.
