Amprobe GP-1 Earth-Tester-Ground-Probe - Manual (Page 3)

We recommend the user be equipped with the following items to be fully prepared to perform tests:
• LINEMAN’S GLOVES (to be worn at all times).
• A NON-METALLIC, 100 FT. TAPE MEASURE TO CORRECTLY SPACE THE TEST RODS.
• CALCULATOR TO CALCULATE PROPER TEST ROD DISTANCES.
• A 3 LB. HAMMER TO POUND TEST RODS IN HARD SOIL.
• WATER TO TREAT SOIL AROUND TEST RODS (if necessary).
• A CLEAN CLOTH TO CLEAN RODS AND INSTRUMENT AFTER USE.
Table of Contents
Page 3
Instrument Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Items Affecting Ground Electrode Resistance . . . . . . . . . . . . . . . . . . . . . . . . .4
Memory Storage Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Soil Resistivity Test A (Wenner Method) . . . . . . . . . . . . . . . . . . . . . . . . . .6, 7, 8
Two Point Ground/Earth Continuity Test B . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Electrode Resistance Test C & D . . . . . . . . . . . . . . . . . . . . . . . . .10, 11, 12, 13
Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Voltage Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Battery Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Field Survey Data Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18