Product Highlights

This versatile clamp-on power meter offers a full range of diagnostics, including those that HVAC technicians need most—volts, amps, resistance, capacitance, DC microamps, in-rush current and temperature.

A great clamp-on multimeter choice for troubleshooting or maintaining air conditioning or motor efficiency, measuring phase rotation, and identifying harmonics. Convenient joystick enables quick single-handed function selection.

True-rms technology improves accuracy in noisy environments

Measures AC/DC voltage to 1000 V, AC current to 600 A, plus resistance, frequency, capacitance, power factor, total harmonics distortion (THD) and individual harmonics from 1 to 25

Measures temperature from -58 °F to 1832 °F (-50 °C to 1000 °C)

Provides DC micro amps measurements to test flame sensors

Includes inrush current measurement and phase rotation indication for 3-phase motors

Non-contact voltage detection enhances safety

Low pass filter enables measuring voltage and frequency on variable frequency drives

Continuity beeper quickly identifies shorts and opens

Large backlit digital display with analog bar graph presents the full picture

Min, max and smart data hold

Peak hold identifies spikes and transients

In-jaw flashlight automatically lights when jaws open to illuminate dark panels and junction boxes

Auto power off conserves battery life

Maximum jaw opening accommodates large conductors up to 1.45″ (37 mm)

Rubber overmold body absorbs shocks—drop proof to 4 feet (1.2 m)

CAT IV-rated

What’s Included

ACD-51NAV
Test leads
Batteries (installed)
Carrying case
Banana k-type thermocouple

Resources

Datasheet »

Product Manual »

Specifications

FEATURE	ACD-50NAV	ACD-51NAV	ACDC-52NAV	ACD-53NAV	ACDC-54NAV	BEST ACCURACY
AC Current	100.00 A, 600.0 A			100.00 A, 1000.0 A		+/- (1.5 % rdg + 5 LSD)
DC Current	_	_	100.00 A, 600.0 A	_	100.00 A, 1000.0 A	+/- (1.5 % rdg + 5 LSD)
AC Voltage	100.00 V, 1000 V					+/- (1.0 % rdg + 5 LSD)
DC Voltage	100.00 V, 1000 V					+/- (0.7 % rdg + 2 LSD)
Resistance	1.0000 KO, 10.00 KO, 100.00 KO					+/- (1.0 % rdg + 3 LSD)
Frequency	20.0 Hz to 10 KHz					+/- (0.5 % rdg +3 LSD)
Capacitance	400.0 µF, 4.000 mF					+/- (1.9 % rdg + 8 LSD)
DCµA	_	1000.0 µA	_	_	_	+/- (1.7 % rdg + 2 LSD)
Temperature	_	-50 °F → 1832 °F (-50 ºC → 1000 ºC)	_	_	-50 °F → 1832 °F (-50 ºC → 1000 ºC)	+/- (1 % rdg + 0.8 ºC)
THD (Total harmonics distortion)	0.1% → 100.0%					+/- (3.0 % rdg + 10 LSD)
Individual harmonics	1 → 25					_
Power	10 kW → 600 kW			10 kW → 1000 kW		+/- (2.5 % rdg + 5 LSD)
Power factor	-1.00 → 1.00					+/- 3 degrees
Accommodates conductors	Up to 1.45″ (37 mm) in diameter			Up to 1.60″ (40 mm) in diameter