1. Backlight and battery detection function.
2. Data holding.
3. It can be used for precise three-wire measurement or simple two-wire measurement.
4. When measuring ground resistance, if C or E end of test lead is not in good contact, "—- ohm" warning appears on LCD.
5. "OL" stands for over range. 6.Double insulation or reinforced insulation safety structure
1. Measurement method:
– Ground voltage measurement: Average response
– Ground resistance measurement: Test signal frequency: about 820Hz, current: 20 ohm about 3.2mA
2. Working environment: Temperature: 5~ 40 degree C, Relative humidity: Less than or equal 80 ~ RH (no fog) Altitude Less than or equal 2000 meters
3. Storage conditions: Temperature: -20 ~ 60 degree C; Relative humidity: Less than or equal 70% RH (no fog)
4. Power supply: 9V power supply: 1.5V (No. 5 alkaline battery) * 6 (Not included battery)
5. Overload protection: Ground resistance: 200V AC (10 seconds) Ground voltage: 400V AC (30 seconds)
6. Insulation resistance: The insulation resistance between measurement circuit and case is not less than 20Mohm