The laboratory shunt resistor from Chauvin Arnoux is a precise measuring accessory for determining high direct currents (DC) using a voltmeter. The device serves as a measuring shunt and enables current measurement by converting the current into a measurable voltage, which is tapped at the terminals. It is specifically designed for use in laboratory environments and professional testing, where high accuracy and safety are required.

Applications

The shunt resistor is suitable for applications where high direct currents must be precisely measured, for example in electrical engineering, machine building, or research. The combination of accuracy class 0.5 and low temperature coefficient ensures reliable measurement results even under varying ambient temperatures. The overload capacity up to 2 A/200 mV allows for short-term overloads, increasing versatility in operation.

Functions and Equipment in Detail

The device features safety sockets with a diameter of 4 mm, enabling secure and easy connection to measuring instruments. The sockets are double-insulated, increasing safety during handling. The housing is impact-resistant and self-extinguishing, making it suitable for use in industrial or laboratory environments. The protective insulation complies with IEC 61010, category CAT III 600 V, representing a high safety level for measuring instruments in electrical installations.

Technology Explained Simply

A shunt resistor, also known as a shunt, operates according to Ohm’s Law: the current flowing through the resistor generates a voltage proportional to the current. This voltage is measured with a voltmeter, and the current can be calculated from the value. Accuracy class 0.5 means the measurement error is at most 0.5 % of the displayed value. The low temperature coefficient ensures that resistance values remain stable even with temperature fluctuations, which is crucial for precise measurements.

Compatibility and Accessories

The shunt resistor is designed for use with voltmeters equipped with corresponding connection sockets. The safety sockets with 4 mm diameter are standard in many measuring instruments, ensuring universal usability. The double insulation and protection class CAT III 600 V also make the device suitable for applications in electrical installations with a certain voltage class.

Mounting and Installation

Installation is carried out by directly connecting the shunt resistor into the current circuit. The safety sockets allow for easy and secure connection. It is important to ensure that the resistor is connected in series with the current circuit to be measured, in order to capture the current flow. The maximum load of 2 A/200 mV must not be exceeded continuously to avoid damage to the device.

Advantages in Operation

The laboratory shunt resistor offers high measurement accuracy combined with maximum safety. The combination of a robust housing, double insulation, and protection class CAT III 600 V makes it a reliable tool in professional environments. The simple handling via safety sockets reduces the risk of incorrect connections and increases efficiency during measurement.

Scope of Delivery

The scope of delivery includes the laboratory shunt resistor and an operating manual. The manual contains information on the correct handling and installation of the device.