Eigenschaften
Best accuracy	0,02 %
Acoustic continuity test and diode	Ja Ja
Dimensions / weight	155 x 75 x 55 mm / 320 g
Backlighting
AC voltage LowZ
Non-contact voltage detection (NCV)
Display hold

The Chauvin Arnoux CA 5231 is a compact TRMS digital multimeter with a shock-protected housing and integrated foldable stand bracket, specifically designed for use in electrical contracting. It enables precise measurements of AC and DC voltage, current, resistance, as well as continuity testing and diode testing. The display with 6000 points and a bar graph with 61 segments offers clear and quick readability, supported by backlighting for use in poorly lit environments. Measurements are performed using the True RMS method, ensuring accurate capture of AC quantities even with non-sinusoidal signals. The best accuracy is 0.02 %, which is sufficient for professional applications in electrical installation.

Applications
This multimeter is suitable for use in electrical installation and maintenance work in the field of electrical engineering. It meets safety requirements for CAT IV 600 V and CAT III 1000 V, making it suitable for measurements on distribution systems and main lines. The integrated non-contact voltage detection (NCV) allows for quick identification of live conductors, with the display turning red when approaching a live cable. This improves workplace safety, especially when searching for faulty wiring or testing sockets and switches.

Functions and Equipment in Detail
The device features automatic range selection as well as the option for manual range setting, providing flexibility during measurements. AC voltage measurement covers 6 ranges up to 1000 V with a resolution of 0.01 mV and a bandwidth of 45 Hz to 1 kHz. DC voltage measurement also covers 6 ranges up to 1000 V, with the same 0.01 mV resolution. Resistance measurement extends up to 60 MΩ with a resolution of 0.1 Ω. The VLowZ measurement function minimizes measurement errors caused by stray voltages, which is particularly important when measuring on lines with high internal resistance. The acoustic continuity test and diode test are also integrated. The hold function allows saving a measurement value for later reading.

Technology Explained Simply
True RMS measurement ensures that even with distorted AC voltages (e.g. from switch-mode power supplies or frequency converters), the actual RMS value is displayed correctly. Backlighting ensures good readability in darkness or poorly lit rooms. The bar graph display provides additional visual indication of the magnitude of the measured value, which is helpful during quick inspections. The IP54 protection rating protects the device against dust and splashing water, making it suitable for outdoor use or in damp environments. The overload protection up to 8000 V protects the device from damage due to accidental misuse.

Compatibility and Accessories
The multimeter includes a current clamp (model MINI 03, 100 A AC) in the delivery scope, enabling current measurement up to 600 A AC/DC. The clamp operates with a sensitivity of 1 mV/A, so the measured value is displayed directly in amperes. Additionally, test leads, an instruction manual, and a protective case are included in the delivery scope. The device is compatible with the MultiFix magnetic holder, which allows flexible mounting. Other suitable accessories include various clamp models (e.g. clamp MN15 CV 200/0.2, clamp C107 CV 1000/1), test leads with 4 mm connectors (straight and angled), test probes in various categories (CAT IV 1000 V, CAT II 300 V), crocodile clips, and a carrying case. These accessories expand the range of applications and facilitate field work.

Mounting and Installation
The device is held directly at the measurement point, with the test leads connected to the corresponding connection points. Current measurement is performed using the integrated clamp, which is placed around the conductor. The clamp is directly connected to the multimeter and requires no additional mounting. Operation is performed via the rotary selector switch and buttons on the device. The two off positions allow quick selection of non-contact voltage detection or turning off the device.

Advantages in Operation
The combination of compact design, high accuracy, and comprehensive functions makes the CA 5231 a reliable tool for electricians. The backlighting and bar graph display improve readability, while True RMS measurement ensures accurate values even with complex signals. The VLowZ function reduces measurement errors, and the NCV function enhances workplace safety. The device is robust, easy to operate, and meets the required safety standards for use in electrical installation.

Note: Batteries are not included in the delivery scope.