Chauvin Arnoux CA6240 Microhmmeter

Chauvin Arnoux authorised distributor and calibration house.

Includes: Carry Bag, power lead 2m long, 1 set of 2 x 10 A Kelvin clamps with a 3m cable, optical / USB communication cable, Microhmview software, simplified CA6240 operating manual in 5 languages, C.A 6240 operating manual in 5 languages.

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Chauvin Arnoux


New product

£ 1,959 tax excl.

£ 2,118 tax excl.

- 7.5%

Exclusive Cuthbertson Laird Group Promotion
Purchase a Chauvin C.A 6240 Microhmmeter and we'll give you a set of double test probes P01102056 (RRP £109) FREE whilst stocks last.
Offer may be withdrawn at any time.

The Chauvin C.A 6240 allows quick detection of any deterioration between 2 contact points. This means it can be used for a very broad range of applications. The micro-ohmmeter provides reliable, accurate measurements due to its test current of up to 10 A.

Ergonomic, lightweight and compact. Its wide LCD screen comprising 2 digital displays is particularly easy to read. It includes indications intended to facilitate implementation and interpretation of the measurements.

The front end of the micro-ohmmeter employs a four-wire Kelvin configuration, which eliminates test lead resistance for a measurement accuracy of 0.25%. A built-in circuit filters out AC signals. The C.A6240 is packaged in a sealed field case well suited for shop and field use. Power is supplied by a long-life NiMH battery pack with a built-in recharger (110/220V).

The large, easy-to-read liquid crystal display is 2.25 x 4.00". It displays the value of resistance, current or voltage test, polarity and battery charge. For operator safety and instrument protection, the micro-ohmmeter is fuse protected at the inputs. One fuse, accessible from the front panel, protects against stored energy in inductive loads. Enhanced internal circuitry protects against possible inductive kickback when the current is shut off. A built-in thermal switch protects the Chauvin 6240 against overheating on the 10A range when in continuous use.


Contact resistance of switches and circuit breakers.
Earth continuity.
Quality of weld spots.
Surface condition and metallising.
Graphite electrode.


Wide measurement range.
Very easy to use.
Automatic measurement mode.
Automatic "on the fly" or manual recording mode.
Possibility of measurements on inductive components.
Measurement prohibited in the presence of a disturbance voltage.
Protection against accidental overloads up to 500 V.
Large backlit LCD display.

Chauvin C.A 6240 Specifications
Measurement range 5 to 3,999 µΩ 4 to 39.99 mΩ 40 to 399.9 mΩ 400 to 3,999 mΩ 4 to 39.99 Ω 40 to 399.9 Ω
Resolution 1 µΩ 10 µΩ 100 µΩ 1 mΩ 10 mΩ 100 mΩ
Accuracy ± 0.25% ± 2 counts.
Measurement current 10 A 1 A 100 mA 10 mA
No-load voltage 4 to 6 V
Data optical / USB link.
Storage 100 measurements.
Connection 4 screw terminals, 4mm in diameter.
Power rechargeable 6 V 8.5Ah NiMH battery pack.
Protection IP 53.
Electrical safety IEC 61010-1 CAT III 50 V.
Dimensions 273 x 247 x 280 mm.
Weight 5 kg.
Chauvin C.A6240 warranty 12 months.

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Chauvin Arnoux CA6240 Microhmmeter

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