Simple and fast clamp-on operation - no leads, no auxiliary rods or spacing requirements. No need to disconnect neutral service
Direct reading of ground resistance from 0.01ohm to 1200ohm
Direct reading of continuity and ground loop resistance
Direct reading of ground leakage or phase current from 1mA to 30Arms
Jaw design with large 1.25" (32mm) window - accommodates up to 1000MCM cables
Auto-off for power management
Alarm function with adjustable set point and buzzer for quick field checks
Memory function to store 99 field measurements for later retrieval
CE Mark and UL approved
Rugged Lexan head and body construction resists breakage
Alarm settings and stored memory information saved during shutdown
Patented design
Application: Measure electrical ground rod and grid resistance, Use on multi-grounded systems without disconnecting the ground rod under test, Measure resistance and continuity of grounding loops around pads and buildings, Measure leakage current flowing to ground or circulating in ground systems, Conduct field surveys and retrieve and analyze readings at a later time, Use on cell towers and telecommunication sites, Use on pools, spas and other consumer installations.
 "Ground Resistance Tester Model 3731 (Clamp-On, Alarm, Memory) Catalog Number- 2117.61")