The PAC16 current clamp from Chauvin Arnoux is a precise measuring instrument for capturing direct and alternating currents in industrial and commercial applications. The device is based on Hall-effect technology, which enables contactless current measurement by detecting the magnetic field around a conductor and converting it into a proportional electrical signal. The PAC16 is designed for use in two measurement ranges: from 0.5 A to 40 A AC/60 A DC and from 0.5 A to 400 A AC/600 A DC. This dual-range function allows flexible adaptation to different current levels without requiring the device to be changed or reconfigured.

Applications
The current clamp is designed for use in installations with varying current levels and cable diameters. It is particularly suitable for monitoring and diagnosing power consumption in industrial plants, energy distribution systems, and electrical equipment. The high flexibility is supported by the clamping diameter of 30 mm or the ability to simultaneously enclose two smaller current bars, each with a diameter of 24 mm. This enables measurement on thick cables or in compact switchgear where space is limited.

Functions and Equipment in Detail
A central feature of the PAC16 is the integrated automatic DC zero adjustment, referred to as ZeroDC. This function improves measurement accuracy, especially for direct current, by automatically compensating for offset voltages. This simplifies operation and reduces the need for manual calibration. The device provides an output signal in the form of direct and alternating voltage, making it compatible with various measuring and control systems.

Technology Explained Simply
The current clamp operates with two transformation ratios: 1 A/10 mV and 1 A/1 mV. These values define how much voltage is generated at the output when a specific current flows through the measurement range. The 1 A/10 mV ratio offers higher resolution for smaller currents, while 1 A/1 mV is suitable for higher currents. Typical accuracy is ≤ 1.5 % for the smaller range and 2 % for the larger range. The output is delivered via a robust cable with 4-mm-insulated connectors, ensuring a secure and reliable connection to measuring instruments or data loggers.

Compatibility and Accessories
The PAC16 is designed for use with measuring instruments capable of receiving an analog voltage signal (direct or alternating voltage). Use with digital measuring systems is possible, provided they have an appropriate analog input interface. The clamp does not include additional accessories such as cables, adapters, or calibration aids, except for the integrated cable with 4-mm connectors.

Mounting and Installation
Mounting is done by clamping around the conductor or current bar to be measured. The clamp can enclose either a single conductor with a diameter up to 30 mm or two parallel conductors, each with a diameter of 24 mm. Installation requires no tools; the clamp opens manually and closes automatically. The optional standby function reduces power consumption when the device is not in active use.

Advantages in Operation
The PAC16 offers high measurement accuracy and reliability, supported by the automatic zero adjustment. The robust construction and insulated connectors ensure safe and long-lasting use. The dual-range function reduces the need for multiple measuring devices, increasing efficiency during maintenance and servicing. The clamp is designed for use in environments with industrial conditions, although no specific protection ratings such as IP classification are mentioned.

The delivery includes the PAC16 current clamp and the operating instructions.