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Chauvin Arnoux CA6422
  • Chauvin Arnoux CA6422
  • Chauvin Arnoux C.A 6422
  • Chauvin Arnoux CA6422
  • Chauvin Arnoux CA6422

Chauvin Arnoux CA6422 Earth Tester

chauvin arnoux authorised distributor.

Includes: 6 x LR6 type AAA batteries, 1 quick start guide, 1 safety datasheet, 1 test report with measurement results, WEB link/QR Code for downloading the manuals.

£340.00 Save 15%
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Rugged and waterproof, the CA 6422 earth tester is ideal for intensive use in the field. This tester can be used for 2P and 3P earth measurements. The connections are clearly identified with text markings and colour coding. All the measurements and functions are directly accessible on the instrument's front panel, even when you are wearing gloves.

As soon as it is powered up, the instrument automatically performs a resistance measurement in 2P mode. A short press on the TEST button starts measurements in one-shot 3P mode. A long press on TEST can be used to activate the permanent 3P mode. Internal filtering automatically stabilises the measurement. As soon as it has stabilised, the result is frozen on the display.

A LED indicates the presence of a hazardous voltage which prohibits measurement. If the NOISE symbol flashes, it means that a noise voltage is present. In the event of a noise-filled environment, automatic switching from a frequency of 128 Hz to 256 Hz helps to improve measurement accuracy.


2P resistance/3P earth resistance measurement up to 50 kΩ for highly resistive terrain.
Automatic stabilisation of the measurementy.
Leakage current measurement from 0.5 mA.
Battery recharging via the mains, USB socket or vehicle cigarette lighter.
Connections with text and coloured markings to avoid any risk of errors.
Detection if a hazardous voltage is present, thus prohibiting measurement.
Rugged, waterproof casing for intensive, all-terrain use.
Compliant with IEC 61557-1 and IEC 61557-4.

 CA 6422 & CA 6424 Comparison Chart
Instrument Functions
C.A 6422 C.A 6424
Earth resistance measurement (with three rods)    
Voltage measurement  
Resistance measurement    
Mean of the earth measurements at 52, 62 and 72%    
Detection of RH too high    
Detection of RE too high    
Detection of a spurious voltage on USE    
Measurement of AC current with an ammeter clamp (optional)    

Chauvin Arnoux CA6424 Specifications
2P Resistance
Range 0.05 - 99.99 Ω / 80.0 - 999.9 Ω / 0.800 - 9.999 kΩ / 8.00 - 50.00 kΩ.
Resolution 0.01 Ω / 1 Ω / 10 Ω / 100 Ω.
Accuracy ± (2%R + 10 cts) / ± (2%R + 2 cts) / ±(2%R + 1 ct) / ± (2%R + 1 ct).
Cable compensation  
3P Earth Resistance
Range 0.5 Ω - 2.000 kΩ.
Resolution 0.01 Ω / 0.1 Ω / 1 Ω.
Accuracy ±(1%R + 10 cts) / ±(1%R +2 cts) / ±(1%R + 1 ct).
Measurement frequency 128 Hz or 256 Hz.
No-load voltage ±10 V peak.
Measurement mode One-shot or permanent.
Data storage  
Calculation of average  
General Specifications
Display Backlit custom 206-segment LCD.
Measurement mode R 2P (Ω), R 3P (Ω).
Power supply 6 x LR 6 or AA batteries.
Automatic power-off  
Battery life > 2,000 x 3P earth measurements at 100 Ω.
Dimensions 223 x 126 x 70 mm.
Weight 1 kg.
Environment Operation: -10 to +50°C / Storage: -40 to +70°C (without batteries/accumulators).
Protection Up to 600 V on any of the input terminals.
IP/IK index IP 65 as per IEC 60529 / IK 04 as per IEC 50102.
Drop test 1 metre as per IEC 61010-1.
Standards / electrical safety EMC: IEC 61326-1; IEC 61010-2-030 / 600 V CAT IV.
Compliance with IEC 61557 IEC 61557-1 and IEC 61557-5.
Chauvin Arnoux C.A 6422 warranty 24-months.


Chauvin CA 6422 Datasheet

PDF Specifications of the Chauvin Arnoux C.A 6422 Portable Earth Tester.

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