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Chauvin Arnoux CA6240 Microhmmeter
  • Chauvin Arnoux CA6240 Microhmmeter
  • Chauvin C.A6240
  • Chauvin Arnoux CA6240 Microhmmeter
  • Chauvin Arnoux CA6240 Microhmmeter

Chauvin Arnoux CA6240 Microhmmeter

chauvin arnoux authorised distributor.

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 and a calibration certificate (issued by Cuthbertson Laird Group).

£2244 Inc. VAT

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.
Calibration Certificate (Cuthbertson Laird Group issued).

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.


Chauvin CA6240 Datasheet

PDF Specifications of the Chauvin Arnoux CA 6240 10A Microhmmeter.

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Chauvin Arnoux CA6240 Microhmmeter
USB Optical cable Communications cable. HX0056-Z
Clamps Mini Kelvin Clamps x2. 1 A rating, red/black. P01101783
10A Clamps x2 Standard leads - 3m, 10A, red/black. P01101794
Probes Double test probes (x2). P01102056
Pistol Probes Set of 2 Gun-Type KELVIN Probes 10A. P01103065
Straight Probes Set of 2 Pivoting KELVIN Probes 10A. P01103063

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