Chauvin Arnoux CA6240 Microhmmeter

Chauvin Arnoux

Chauvin Arnoux authorised distributor and calibration house.

Rugged and leakproof, the Chauvin CA6240 is a top-of-the-range product designed for on-site, workshop or laboratory use.

More details



£ 1,641.45 rrp £ 2,118.00

save 22.5%

(£ 1,969.74 inc VAT.)

Add to wishlist


Buy a Chauvin C.A 6240 Microhmmeter and get a set of double test probes P01102056 (RRP £109) for FREE whilst stocks last. Offer may be withdrawn at any time.

The 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.Chauvin CA 6240 connections

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 CA6240 Specifications:

  • Broad measurement range  400µΩ to 400Ω.
  • 4 wire measurement method.
  • Automatic measurement mode.
  • Test current: up to 10 A.
  • Current reversal.
  • Data: optical / USB link.
  • Storage: 100 results.
  • Protection against accidental overloads up to 500 V.
  • Connection: 4 screw terminals, 4mm in diameter.
  • Power: rechargeable 6 V 8.5Ah NiMH battery pack.
  • Use indoors or outdoors.
  • Dimensions: 273 x 247 x 280mm.
  • Weight: 0.5kg.
  • Chauvin Arnoux C.A6240 Warranty: 1 year.


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.

Weight 5kg
Calibration Certificate Yes
Test Current 10A

Great Little Work Horse

Bought this because I couldn't stretch to a Megger. I'm so glad I did! It does everything I need and the water tight case is the best I've come across. Thanks chauvin.

Write your review !

Write a review

Chauvin Arnoux CA6240 Microhmmeter