Clamp-On Ground Resistance Tester ×

Measures currents down to 1mA. Convenient alarm and 99-point memory functions. Reads ground resistance down to 0.10Ω. Fully autoranging with data hold to capture readings./li> Measures up to 30A RMS ground or leakage current. Accessories included: (1) 9V battery, molded carrying case, test resistance loop.

The Greenlee CMGRT-100 Clamp-On Ground Resistance Tester is a hand-held testing device intended to evaluate grounding systems. It has two modes:

• Active Mode for measuring resistance
• Passive Mode for measuring current

The Active Mode induces a voltage into a conductor and measures the resulting current. It then calculates the resistance. The Passive Mode senses the electromagnetic field surrounding a conductor to determine the current flow.

A test resistance loop is provided to perform a quick check of the unit.

Identification

Jaw Lever Memory Button Alarm Button Current and Decrement Button Resistance and Increment Button On/Off Button Display Hold Button Test Resistance Loop	Identification ×
Identification ×
Display Icons  Speaker is enabled HOLD Hold function is enabled NOISE Excessive stray noise (greater than approximately 5 A or 50 V); when this appears on the display, resistance measurements are not valid Open jaw R<.1Ω Measured resistance is < 0.1 Ω; when this icon appears on the display, measurements may not be valid mA, A  Milliamperes or amperes ALARM Alarm is on, or programming is in progress	Ω Ohms 188  Battery power (up to 100%) and alarm set point (up to 199 Ω) stored in memory AL Alarm P Power-Off function is disabled Battery low 88 Memory location MR Memory recall MEM Memory function is enabled  8.8.8.8 Measurement display; shows OL (overload) when the measured resistance is greater than 1200 Ω, or the measured current is greater than 29.99 A RMS