The Megger 247000 Digital Low Resistance Ohmmeter is a highly accurate instrument that provides a simple, practical and reliable means of making low-resistance tests in the field. It is also are ideal for production quality control.

The 247000 Ohmmeter operates on the four-wire measurement principle, thus eliminating lead and contact resistances. With basic accuracies of +/- 0.25% and resolution down to 0.1 microohms, the ohmmeter is nonetheless designed to be rugged and portable for use at the job site. A variety of optional test leads and calibration resistance standards are offered for use with the 247000.

Operation is simple: just connect the leads, turn the instrument on and read the measurement directly from the digital LED display. No warm-up is required.

The 247000 is battery-powered and features separate measuring and charger modules for maximum portability. The charger can be left in the shop, and the measuring module taken to the job site. It weighs less than 8 pounds (3.6 kg) and provides hours of testing.

Applications

Typical applications include measuring the resistance of:

• Switch and circuit breaker contacts

• Transformers and generators

• Motor windings

• Busbar and other joints

• Aircraft, rail and pipe bonds

• Cable splices, welds and fuses

• Metal alloys

• Graphite electrodes and other composites

• Wire and cable