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 digital multimeter with True RMS (TRMS) measurement, specifically designed for use in electrical contracting. It enables precise measurements of AC and DC voltages up to 1000 V, as well as resistances up to 60 MΩ. The device functions include acoustic continuity testing, diode test, non-contact voltage detection (NCV), and display hold (HOLD). The device features a 6000-count display with an integrated bar graph of 61 segments and backlighting, ensuring good readability even in poor lighting conditions. The display has a digit height of 8 mm. The housing is shock-protected and includes a foldable stand bracket, allowing the device to be securely placed. The IP54 protection rating safeguards against dust and splashing water, enabling use in outdoor or damp environments. Safety categories CAT IV 600 V and CAT III 1000 V ensure safe operation in electrical installations according to standards. The device is protected against overloads up to 8000 V.

Applications
This multimeter is suitable for electricians and tradespeople in the electrical engineering field. It is used for diagnosing and maintaining electrical installations, testing circuits, measuring voltages, currents, and resistances, as well as performing continuity tests on wires and components. The non-contact voltage detection (NCV) allows for quick and safe identification of live conductors, with the display turning red upon detection. The VLowZ (low impedance) function prevents measurement errors caused by stray voltages, particularly when measuring voltages in electrical installations with high loads.

Functions and Equipment in Detail
The device offers six measurement ranges for AC and DC voltages up to 1000 V with a resolution of 0.01 mV. AC and DC current measurements are performed using an optional current clamp with a transformation ratio of 1 mV/A, enabling current measurements up to 600 A. The resolution for current measurements is 0.1 A. Resistance measurement includes six ranges up to 60 MΩ with a resolution of 0.1 Ω. The acoustic continuity test and diode test functions allow testing of wires and semiconductor components. The display hold (HOLD) function retains the current measurement value on the display for documentation or verification as needed. The dual OFF position enables more efficient work, with one position activating the non-contact voltage detection.

Technology Explained Simply
The True RMS (TRMS) measurement ensures accurate readings of non-sinusoidal AC voltages and currents, which is important when measuring modern electronic devices and frequency converters. The display backlighting improves readability in dark or poorly lit environments. The bar graph with 61 segments provides a visual overview of the measurement value trend. The IP54 protection rating means the device is protected against dust and splashing water, allowing use in industrial or outdoor environments. The safety categories CAT IV 600 V and CAT III 1000 V define the maximum permissible voltages and environments in which the device can be safely used.

Compatibility and Accessories
The multimeter is compatible with the multifunction mounting accessory MultiFix, enabling flexible mounting and securing of the device. Suitable accessories include, among others, test leads with 4 mm connectors (straight and angled), test probes, crocodile clips, a carrying case, and various current clamps such as the MINI 03 clamp (1 A / 1 mV), the MN15 CV 200/0.2 clamp, the C107 CV 1000/1 clamp, and the electrician’s accessory set. The included current clamp enables current measurements up to 600 A AC/DC.

Mounting and Installation
The device is connected directly to the conductors to be measured. Current measurement is performed using the included current clamp, which is placed around the conductor to be measured. The test leads are connected to the corresponding terminals on the multimeter. Operation is performed using the buttons on the device, with the dual OFF position and HOLD function facilitating work. The device can be placed upright, as it features a foldable stand bracket.

Operational Advantages
The CA 5231 offers high measurement accuracy of 0.02 % and high resolution of 0.01 mV for voltages. The combination of TRMS measurement, VLowZ function, and non-contact voltage detection increases the safety and reliability of measurements. The backlighting and bar graph improve readability. The compact design and shock-protected housing make the device robust and easy to handle. Compatibility with the MultiFix mounting accessory enables flexible use. The device is designed for use in electrical installations according to CAT IV 600 V and CAT III 1000 V and offers overload protection up to 8000 V. The delivery includes the multimeter, the current clamp, and the operating instructions. Batteries are not included in the delivery scope.