General
Current range	100 mA
Enclosure diameter	300 mm

The MiniFlex MA194-1000 from Chauvin Arnoux is a flexible AC current transformer specifically designed for use with Qualistar and PEL power loggers. It enables the measurement of alternating currents in the range of 100 mA to 10,000 A without interrupting the circuit. The flexible design allows encircling cables with a maximum diameter of 300 mm, enabling the measurement of larger cables or multiple cables simultaneously. The device is designed for use in industrial and technical installations where safe, non-contact current measurement is required.

Applications

The MiniFlex MA194-1000 is suitable for monitoring and analyzing power consumption in electrical systems, particularly in energy efficiency diagnostics, troubleshooting in power supply systems, and long-term measurements for energy balance assessments. It is frequently used in combination with power loggers to capture consumption data over extended periods. The flexible jaw allows for easy installation even on hard-to-reach or already installed cables, without requiring disassembly or operational interruption.

Functions and Equipment in Detail

The current transformer operates on the principle of a clamp-type current transformer, capturing the magnetic flux generated by the current flowing in a cable and converting it into a proportional measurement signal. The measurement range of 100 mA to 10,000 A covers a wide variety of applications, from small consumers to industrial installations. The device features a 3 m long connection cable, enabling flexible connection to the measuring device. Dimensions are approximately 370 mm (length) × 320 mm (width) × 18 mm (height), with a weight of approximately 160 g. The flexible jaw is designed to encircle cables with a diameter up to 300 mm.

Technology Explained Simply

The MiniFlex MA194-1000 uses the induction principles of a current transformer to detect the flowing current without direct electrical contact. The flexible jaw consists of a magnetic core that wraps around the cable to be measured. The current in the cable generates a magnetic field, which is captured by the core and converted into a proportional output signal. This signal is transmitted via the 3 m long connection cable to the measuring device (e.g., a power logger). Measurement is exclusively in the AC range, with signal accuracy and stability ensured by the transformer’s construction.

Compatibility and Accessories

The MiniFlex MA194-1000 is specifically designed for use with Qualistar and PEL power loggers. It is used as a replacement or supplementary component for these devices to enable current measurement in existing systems. As optional accessories, a set of colored identification parts is available, which can be used to better identify individual measurement channels or cables. These identification parts are optional and improve clarity when multiple measurements are being taken.

Installation and Mounting

Installation is performed by simply wrapping the flexible jaw around the cable to be measured. The jaw is designed to open and close without tools. The maximum encircling width is 300 mm, allowing even larger cables or multiple cables to be measured simultaneously. The connection cable is attached to the measuring device via the designated connection terminals. No additional power supply is required, as the current transformer operates passively and transmits the measurement signal directly.

Operational Advantages

The MiniFlex MA194-1000 provides a safe, non-contact measurement method that protects the user from dangerous voltages in the circuit. The flexible design enables easy and quick installation, even on already installed cables. The wide measurement range of 100 mA to 10,000 A makes the device universally applicable, and its combination with power loggers allows for detailed analysis of power consumption. The robust construction and low weight of approximately 160 g facilitate use in mobile or space-constrained environments. The 3 m long connection cable allows flexible positioning of the measuring device, independent of the cable’s location.