|
|
AVO / Biddle / Megger DET 3/2 Digital Earth Tester
The MEGGER® DET3/2 Digital Earth Tester is a compact instrument designed to measure earth electrode resistance and soil resistivity. The instrument uses the four-terminal method of measurement, in which the resistance of the current circuit does not affect the reading. The instrument circuit has been designed so the resistance of the potential circuit also does not affect the measurement. Pressing a latchable button converts the instrument from its four-terminal measurement mode to a three-terminal one. The reversing DC test current has a frequency of 128 Hz, which avoids possible interference from other 50 and 60 Hz stray currents in the vicinity of the earth electrode under test. In the interests of safety, the maximum test voltage has been limited to 50 V.
Features
- Three- or four-terminal measurement selected by a switch
- 50 volt maximum output voltage for safety and convenience
- Direct-reading 3½ digit L.C.D.
- Four ranges covering measurements from 0,01 ohm to 19,99 ohm
Included Accessories
- Four right-angled terminal adaptors to enable test leads with spade connectors (as in the field kit) or test leads with bare ends to be used
- Operating instructions book
Optional Accessories
- Carrying case
- Three terminal Earth testing kit - Comprised of a carrying bag containing:
- Two push-in galvanized steel spikes 10 mm round section, 450 mm long
- 3 m, 15 m, and 30 m of cable
- Earth testing kit - Comprised of a carrying bag and pouch containing:
- Four galvanized steel spikes 12 mm (½") square section, 450 mm (17") long
- Two spike extractors
- 30 m (98.5') of cable
- 50 m (164') of cable
- Two 3 m leads complete with connectors and clips
- Four terminal Earth testing kit - Comprised of a carrying bag containing:
- Four push-in galvanized steel spikes 10 mm round section, 450 mm long
- 3 m, 15 m, 30 m and 50 m of cable
- Reel of cable (50 m long)
|
