OM 22 benchtop micro-ohmmeter is used for 4-wire measurement of very low resistance values up to 20 KΩ with an accuracy of 0.03% RDG and a 0.1 µΩ resolution. Programmable, it is particularly suited for use on test benches with repetitive measurement tasks. The reliability and accuracy of the measurements is improved by a low temperature coefficient of 10 ppm/°C, automatic removal of EMF parasites before each measurement, metal temperature compensation and compensation of ambient temperature.

With three current waveforms available -continuous, pulse or AC current- from 100 µA to 10 A and high flexibility of trigger and sampling conditions, OM 22 low resistance ohmmeter covers a wide range of applications: Cable resistance and resistivity measurement, inductive resistance measurement (motors and transformers winding resistance),contact resistance measurement (connectors, switches, relays…),test of low power electrical components (fuses…) and heat sensitive devices, metallisation / earth bonding and ground continuity measurement.

OM 22 is a programmable instrument, ideal for use on test benches: it has 6 configurations to be modified and recalled by users upon request through the 6 direct keys on the front board. Every configuration defines every measurement aspects: range, current waveform and value, number of measurements per cycle with temporisation, storage conditions, temperature compensation, measuring unit, metal under test, calculations of coil heating or W/km, alarm settings, maximum measurement voltage, analogue output, trigger conditions.

If necessary, OM 22 configurations can be modified through LOG OM data management software delivered in the standard package.

Up to 1,000 samples can be stored inside the instrument and be recalled directly on the display or on computer via LOG OM.

Powered from mains or from rechargeable batteries in option, the electronic calibration of the instrument is performed without any internal adjustment.