Martindale CM79 AC/DC TRMS Clamp Meter
The Martindale CM79 AC/DC TRMS Clamp Meter provides AC and DC current, AC and DC voltage, resistance and continuity measurement in one compact instrument. It uses True RMS measurement to support accurate and reliable readings. A current resolution of 10 mA also supports DC current checks in applications such as PV systems, battery monitoring and electric vehicles.
Its elliptical clamp jaw accepts round conductors and rectangular bus bars, making the meter practical for work on different conductor types. Auto-ranging simplifies setup, while the thumbwheel control supports single-handed use. A display backlight improves visibility, and the hold function allows a reading to remain on screen when direct viewing is difficult.
For load checks, the min/max hold function helps users monitor maximum loads, start-up current and charging current. Automatic power-off helps conserve the two AAA batteries, while the low-battery indicator shows when replacement is required. The Martindale CM79 AC/DC TRMS Clamp Meter has a CAT III 600 V safety rating and is supplied with TL16 test leads, a soft carry case, alkaline batteries and an instruction manual.
Key Benefits
- Measures both AC and DC current without changing instruments.
- True RMS measurement supports reliable readings on AC signals.
- 10 mA current resolution assists with detailed DC current monitoring.
- Auto-ranging reduces manual setup and speeds up routine testing.
- The thumbwheel control allows convenient single-handed operation.
- Min/max hold captures changing loads, start-up current and charging current.
- The backlit display helps users read results in lower light conditions.
- The elliptical jaw provides access to round conductors and rectangular bus bars.
- Automatic power-off helps reduce unnecessary battery use.
- A low-battery indicator gives clear notice when the batteries need attention.
Common Applications
Martindale CM79 AC/DC TRMS Clamp Meter is suitable for a range of testing, maintenance and inspection tasks, including:
- AC current measurement on electrical conductors
- DC current measurement on electrical conductors
- PV installation current checks
- Battery monitoring
- Electric vehicle electrical testing
- Start-up current monitoring
- Charging current monitoring
- Maximum load monitoring
- AC and DC voltage checks
- Resistance and continuity testing
Why Choose This Model?
The CM79 adds DC current measurement to the shared AC current, voltage, resistance and True RMS functions of the listed models. It also provides min/max readings and accepts larger rectangular bus bars than the CM69.
