Chauvin Arnoux CA 6255 [P01143221] 10A Micro Ohmmeter

The Chauvin Arnoux CA6255 Micro Ohmmeter measures electrical resistance up to 2500Ω with a resolution of up to 0.1µΩ thanks to its four-wire measurement method. The test current is adjustable between 10A and 1mA, thus allowing testing across seven ranges with varying degrees of precision, as required by the user. This makes it ideal for evaluating all manner of electrical connections and joints and accuracy of ±0.05% + 1µΩ means that the tester provides accurate, high-precision results every time.

Temperature compensation is an important function of the Chauvin Arnoux CA6255. A Pt100 probe measures ambient temperature and therefore automatically compensates for different conditions as well as for stray voltages. Three measurement modes (non-inductive, inductive, non-inductive with auto trigger) tailor measurement to specific functions for example for resistors with a time constant, inductive components, resistors without a time constant and production components. These capabilities have applications for testing windings, surface finish and metallisation processes, chassis-earth continuity, contact quality, cable resistance, motors and transformers, and mechanical linkage.

The Chauvin Arnoux CA6255 has a large, backlit LCD display capable of showing a resistance reading, ambient temperature and assorted other information simultaneously. The user can select the measurement mode and range using the simple dial and push-button interface and it is also possible to set audible alarms for both a high and a low threshold. The ohmmeter’s large internal memory sorts readings under both object (OBJ) and test (TEST) indices to create an ordered database. It is possible to download files to a PC using a supplied RS-232 cable and then perform advanced analysis and reporting with optional Chauvin Arnoux DataView software.

The Chauvin Arnoux CA6255 comes supplied with a set of 3m test cables with Kelvin clamps, a mains power lead, an instruction manual, a quick guide, micro ohmmeter transfer software and an RS-232 communication cable. The micro ohmmeter is rated as Cat III 50V and has an IP53 ingress protection rating.