Chauvin Arnoux CA6240 Microhmmeter with 4-Wire Measurement and Kelvin Clamps

£2,846.00 / £3,415.20 incl VAT

⚡ Resistance Measurement: Capable of measuring from 5mΩ to 400Ω with a remarkable resolution of 1µΩ.

⚡ Seven Ranges: Offers multiple current settings (10A, 1A, 100mA, 10mA) to suit diverse testing needs.

⚡ Automatic Testing: Initiates tests as soon as continuity is achieved, enhancing efficiency and ease of use.

⚡ Advanced Data Handling: Automatic recording of measurements to internal memory for streamlined data management.

⚡ Portable and Durable: Features a rechargeable NiMH battery and a protective casing rated to IP53, ensuring durability in demanding conditions.

Available on back-order

Free Mainland GB Delivery on orders over £150 Fast Dispatch from our UK Warehouse Price Match Available on Many Products Need Advice? Call 01945 738112

SKU: CHA-CA6240 Category: Micro-Ohmmeters Brand: Chauvin Arnoux

Description

Chauvin Arnoux CA6240, Microhmmeter, 4 wire, 0.01..10A DC c/w 2m Kelvin clamp cables.

The Chauvin Arnoux CA6240 Microhmmeter is a highly accurate and robust instrument designed for precise low-resistance measurements. Ideal for a variety of applications, including checking contact resistance in switches, measuring earth continuity, and assessing weld quality, this microhmmeter offers unparalleled performance and reliability.

⚡ Resistance Measurement: Capable of measuring from 5mΩ to 400Ω with a remarkable resolution of 1µΩ.

⚡ Seven Ranges: Offers multiple current settings (10A, 1A, 100mA, 10mA) to suit diverse testing needs.

⚡ Automatic Testing: Initiates tests as soon as continuity is achieved, enhancing efficiency and ease of use.

⚡ Advanced Data Handling: Automatic recording of measurements to internal memory for streamlined data management.

⚡ Portable and Durable: Features a rechargeable NiMH battery and a protective casing rated to IP53, ensuring durability in demanding conditions.

Key Features:

High Precision: Achieves a basic accuracy of ±0.25% using the four-wire measurement technique with current reversal.
Versatile Applications: Perfect for testing electrical contacts, cable resistance, motor and transformer heating, and more.
User-Friendly Operation: Equipped with a large, backlit LCD display for clear, concise readings and easy navigation.
Memory Storage: Stores measurements automatically, making it ideal for consecutive testing without user intervention.
Robust Build: Leakproof protective casing and a 12-month manufacturer’s warranty for peace of mind.

Chauvin Arnoux part number: P01143200

Comparison of Digital Low Resistance Ohmmeters

Feature	Megger DLRO10	Megger DLRO10X	Chauvin Arnoux CA6240	Megger DLRO10HD	Megger DLRO10HDX	Chauvin Arnoux CA6255
Resistance Range	0.1 µΩ to 2,000 Ω	0.1 µΩ to 2,000 Ω	5 µΩ to 400 Ω	0.1 µΩ to 2,000 Ω	0.1 µΩ to 2,000 Ω	1 µΩ to 2,500 Ω
Test Current	Up to 10 A	Up to 10 A	Up to 10 A	Up to 10 A	Up to 10 A	Up to 10 A (3 ranges)
Test Modes	Manual, Auto, Continuous, Inductive	Manual, Auto, Continuous, Inductive, Unidirectional	Manual, Automatic	Manual, Auto, Continuous, Inductive	Manual, Auto, Continuous, Inductive	Inductive, Non-Inductive, Non-Inductive w/ auto trigger
Measurement Control	Fully Automatic	Fully Automatic / Manual	Manual, Automatic	Fully Automatic	Fully Automatic	Manual, Automatic
Measurement Speed	<3s for forward and reverse current, average display	<3s for forward and reverse current, average display	N/A	<3s for forward and reverse current, average display	<3s for forward and reverse current, average display	<3s for forward and reverse current, average display
Test Method	Single-cycle, reversing DC ratiometric measurement	Single-cycle, reversing DC ratiometric measurement	N/A	Single-cycle, reversing DC ratiometric measurement	Single-cycle, reversing DC ratiometric measurement	N/A
Test Current Accuracy	±10%	±10%	±10%	±10%	±10%	±10%
Test Current Stability	<10 ppm per second	<10 ppm per second	<10 ppm per second	<10 ppm per second	<10 ppm per second	<10 ppm per second
Lead Resistance	Max. 100 mΩ for 10 A operation	Max. 100 mΩ for 10 A operation	N/A	Max. 100 mΩ for 10 A operation	Max. 100 mΩ for 10 A operation	N/A
Voltmeter Input Impedance	>200 kΩ	>200 kΩ	>200 kΩ	>200 kΩ	>200 kΩ	>200 kΩ
Noise Rejection	<1% ±20 digits additional error with 100 mV 50/60 Hz	<1% ±20 digits additional error with 100 mV 50/60 Hz	<1% ±20 digits additional error with 100 mV 50/60 Hz	<1% ±20 digits additional error with 100 mV 50/60 Hz	<1% ±20 digits additional error with 100 mV 50/60 Hz	<1% ±20 digits additional error with 100 mV 50/60 Hz
Data Transfer	None	Real-Time or from storage via RS232	None	None	Real-Time or from storage via RS232	None
Data Storage	None	700 tests	100 measurements	200 test records	200 test records	1,500 measurements
Memo Field	None	Up to 200 characters per test via integral keypad	None	None	None	None
Battery Type	7Ah NiMH rechargeable	7Ah NiMH rechargeable	NiMH rechargeable battery	6V 7Ah sealed lead-acid	6V 7Ah sealed lead-acid	NiMH rechargeable battery
Battery Life	1000 x 10 A tests	1000 x 10 A tests	Not specified	>1000 Auto (3 sec) tests	>1000 Auto (3 sec) tests	Not specified
Battery Charge Time	2.5 hours to 90%, 4 hours full charge	2.5 hours to 90%, 4 hours full charge	Approx. 6 hours	8 hours	8 hours	2.5 hours to 90%, 4 hours full charge
Operating Temperature	+5°C to +45°C (Full Accuracy)	+5°C to +45°C (Full Accuracy)	Not specified	-10°C to +50°C	-10°C to +50°C	+5°C to +45°C (Full Accuracy)
Storage Temperature	-30°C to +70°C	-30°C to +70°C	-30°C to +70°C	-25°C to +60°C	-25°C to +60°C	-30°C to +70°C
Temperature Coefficient	<0.01% per °C from 5°C to 40°C	<0.01% per °C from 5°C to 40°C	N/A	<0.01% per °C from 5°C to 40°C	<0.01% per °C from 5°C to 40°C	<0.01% per °C from 5°C to 40°C
Maximum Altitude	2,000m (6562 ft)	2,000m (6562 ft)	N/A	2,000m (6562 ft)	2,000m (6562 ft)	2,000m (6562 ft)
Safety Rating	CAT III 600 V (with DH6 leads)	CAT III 600 V (with DH6 leads)	CAT III 50 V	In accordance with IEC61010-1, CATIII 300V (w/ cover)	In accordance with IEC61010-1, CATIII 300V (w/ cover)	CAT III 50 V
EMC Rating	IP65 (case closed), IP54 (battery operation)	IP65 (case closed), IP54 (battery operation)	IP53	IP65 (case closed), IP54 (battery operation)	IP65 (case closed), IP54 (battery operation)	IP53
Dimensions (mm)	220 x 100 x 237	220 x 100 x 237	273 x 247 x 280	315 x 285 x 181	315 x 285 x 181	270 x 250 x 180
Weight (kg)	2.6	2.6	5	6.7	6.7	4

What’s Included:

Chauvin Arnoux CA6240 Microhmmeter
2m Kelvin Clamp Cables
User Manual
Rechargeable NiMH Battery
Protective Carry Case

Electrical 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	10mΩ	100mΩ
Accuracy	±0.25% ±2 counts
Measurement Current	10 A	1A		100mA	10 mA
No-load Voltage	4 to 6 V

General Specifications

Connection: 4 screw terminals 4mm in diameter
Leakproofing: IP53
Automatic power-off
Data: optical / USB link
Power supply: NiMH rechargeable battery
Electrical safety: IEC 61010-1 / CAT III 50V
Dimensions: 273 x 247 x 280 mm
Weight: 5kg

CA6240 Black Carry Bag
UK Mains power lead 2m long
Optical / USB communication cable
Chauvin Arnoux “Microhmview” software
Operating manual
Test Report
Set of 2 x 10 A Kelvin clamps with a 3m cable (P01101794)

chauvin-arnoux-ca6240-microhmmeter-datasheet

🚚 Testersmans Shipping Policy

Name: Chauvin Arnoux CA6240 Microhmmeter with 4-Wire Measurement and Kelvin Clamps
Brand: Chauvin Arnoux
SKU: CHA-CA6240
Availability: BackOrder

Free Mainland GB Delivery Over £150

We offer free delivery on most mainland Great Britain orders over £150 (ex VAT).
This applies across England, Wales, and most of Scotland, excluding certain remote or offshore postcodes.

If your order total falls just short of £150, or you’re a returning customer, feel free to contact us — we may be able to offer a discount code or delivery workaround.
📞 01945 738112 | ✉️ [email protected]

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If your delivery is time-critical, please contact us before ordering so we can confirm stock and courier availability.

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We ship worldwide using UPS Express Saver® and other trusted global courier partners. All international shipments are tracked and generally dispatched Monday to Thursday to ensure smooth customs clearance and transit.

Estimated delivery times:

Europe: 1–2 working days
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Delivery times vary depending on location, customs clearance, and local courier performance.

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Please ensure your delivery address and contact number are correct at checkout.
Undelivered parcels may be returned to us after a short holding period.
Redelivery or return fees may apply, even if your order originally qualified for free delivery.
By placing an order, you confirm your understanding and acceptance of this policy.