Eigenschaften
AC/DC power supply	6,000 A / 10,00 A (20 A/30 s)
Dimensions / weight	90 x 190 x 45 / 400 g

The Chauvin Arnoux CA 5273 is a TRMS digital multimeter designed for electrical maintenance of installations and smaller AC and DC machines. It features a compact, shock-protected housing with a foldable stand bracket and offers a dual digital display with 6000 points each, as well as a backlit bar graph indicator with 63 segments in two operating modes: full scale or center-zero. The display enables quick and precise interpretation of measurement values, even in poorly lit environments. The device is designed for measuring AC and DC voltages up to 1000 V and AC and DC current up to 10 A, with a short-term operation up to 20 A (30 seconds) possible. Current measurement is performed using TRMS acquisition, enabling accurate measurement of distorted or disturbed signals. The measurement rate is 5 readings per second, ensuring a fast response to changing values.

Applications
This multimeter is specifically designed for use in demanding environments, particularly for the maintenance of electrical installations and machinery. The IP54 protection rating safeguards against dust and splashing water, making it suitable for outdoor use or in damp environments. The safety rating CAT IV 600 V / CAT III 1000 V according to IEC 61010-1 and IEC 61010-2-033 ensures a high protection standard for the user when measuring in electrical installations.

Functions and Equipment in Detail
The device offers a wide range of measurement functions: voltage measurement (AC/DC), current measurement (AC/DC), resistance measurement, audible continuity test, diode test, frequency measurement (up to 50.00 kHz), capacitance measurement (8 ranges from 6.000 nF to 60.00 mF), and temperature measurement (from -59.6 °C to +1200 °C). Voltage measurement in VLowZ mode with integrated low-pass filter enables precise measurements at low voltages and reduces interference from high-frequency signals. Automatic range selection (Autorange) can be disabled to allow manual settings. Additional functions include display hold (HOLD), storage of MAX and MIN values (with a response time of 100 ms), and automatic power-off, which can be disabled.

Technology Explained Simply
TRMS measurement (True Root Mean Square) enables accurate capture of the RMS value even for non-sinusoidal signals, which is particularly important for modern electronic devices and frequency converters. The dual digital display with 6000 points offers high resolution and accuracy, while the bar graph indicator enables quick visual orientation. The backlight ensures good readability even in darkness. The measurement rate of 5 readings per second ensures a smooth display of changing values, which is advantageous for diagnosing unstable signals.

Compatibility and Accessories
The multimeter can be expanded with various accessories, including test leads with 4 mm connectors (straight and angled), test probes, alligator clips, thermocouple adapters, and Type K temperature sensors, as well as special sensors such as SK11, SK13, SK14, SK15, SK17, and SK6. These enable flexible application for different measurement tasks, especially for temperature measurements in various environments. A multi-purpose magnetic holder and a carrying case (120 x 320 x 60 mm) support mobile use.

Mounting and Installation
The device is designed as a handheld instrument and requires no mounting. It is held directly in the hand or placed on a flat surface using the foldable stand bracket. The test leads are connected to the corresponding terminals on the device, with safety regulations for CAT IV and CAT III to be observed. Power supply is via a 9V battery (type 6LR61), which is included in the delivery scope.

Operational Advantages
The CA 5273 offers high measurement accuracy (0.2% + 2 digits for DC voltage) and a robust construction suitable for daily use in electrical practice. The combination of TRMS measurement, high measurement rate, and versatile functions makes it a reliable tool for electrical professionals. Annual automatic calibration ensures long-term accuracy. The warranty period is 3 years.

Delivery Contents
The device is delivered with test leads, batteries, and operating instructions. The test leads are rated for CAT IV 1000 V and are made of silicone or PVC, depending on the model. The battery is a 9V block battery (type 6LR61). The operating instructions include technical data, operating instructions, and safety regulations.