Amprobe GP-2A Ground Resistance Resistivity Tester

Features:

– Measures earth ground resistance: 3 point (fall of potential) or 2 point tests
– Automatically calculates resistivity: 4 point test
– Automatic voltage measurement prevents false measurements
– Automatically applies three testing frequencies for the most accurate readings
– Test leads, auxiliary electrodes and software are included for complete instrument
– Autoranging
– 999 internal memory locations to store measurements
– RS-232 download to a personal computer

Specifications

Ground resistance (2 and 3 wire method):

– Range: 0.01 to 19.99 / 199.9 / 1999 /19.99 k / 49.9 k
– Accuracy: +/- (2.5% rdg plus 2 LSD)

Ground Resistivity (4 wire):

– Range: 0.06 m to 19.99 m / 199.9 m / 1999 m/19.99 km / 199.9 km / 314 km
– Accuracy: +/- (2.5% rdg plus 2 LSD)

Voltage Measurement:

– Range: 0 V to 460V
– Accuracy: +/- (2.5% rdg plus 2 LSD)

Additional features:

– Ranging: Auto
– Noise Voltage Detection: Yes
– Display Back light: Yes
– Data Storage: up to 999 readings
– PC Connection: Yes
– Auto Power Off: Yes
– Low Battery Indication: Yes