General
Measurement range	100 mA - 10000 A
Enclosure diameter	100 mm

The Chauvin Arnoux MA194-350 MiniFlex is a flexible AC current sensor designed for non-invasive measurement of alternating currents in the range of 100 mA to 10,000 A. It is particularly suitable for use with Qualistar and PEL power loggers and enables current measurement without interrupting the circuit. The sensor features an encirclement diameter of 100 mm, making it suitable for cables with a corresponding diameter. The flexible design allows for easy and safe installation around conductors, protecting the user from hazardous voltages in the circuit.

Applications

The MA194-350 MiniFlex is used in industrial electrical engineering, energy consumption analysis, and power monitoring. It is particularly suitable for applications requiring continuous current measurement without physical interruption of the circuit, such as monitoring machines, drives, or electrical installations. Use with power loggers enables the recording of energy consumption and analysis of load profiles over extended periods.

Features and Equipment in Detail

The sensor operates as a clamp current transformer and uses the principles of electromagnetic induction to convert the flowing current into a measurable signal. The measurement range extends from 100 mA to 10,000 A, covering a wide range of applications from small consumers to industrial high-performance systems. The connection cable has a length of 3 m, allowing flexible placement of the sensor while the logger or measuring device can be positioned elsewhere. The sensor dimensions are approximately 170 mm (length) × 110 mm (width) × 18 mm (height), making it compact and easy to handle.

Technology Explained Simply

The MiniFlex operates as a flexible AC current sensor and uses electromagnetic induction to detect current in a cable. The magnetic field generated by the flowing current is converted into a proportional electrical signal. The measurement range of 100 mA to 10,000 A allows for capturing currents across a very broad spectrum, with accuracy within this range sufficient for most applications. The encirclement diameter of 100 mm permits measurement on cables with a maximum diameter of 100 mm, which is sufficient for many industrial and commercial installations. The 3 m long connection cable provides sufficient flexibility for placing the sensor at the measurement point while the measuring device can be installed elsewhere.

Compatibility and Accessories

The MA194-350 MiniFlex is specifically designed for use with Qualistar and PEL power loggers. It is offered as an accessory for these devices and enables integration into existing measurement systems. Additionally, a set of coloured identification parts is available, which can be used to better identify individual sensors at multiple measurement points. These identification parts facilitate assigning measured values to specific conductors or system components.

Installation and Mounting

Installation is performed by simply clamping the flexible sensor around the cable to be measured. The flexible design allows easy adaptation to cable geometry. No tools are required, and installation can be carried out even in confined spaces. Connection to the measuring device is made via the 3 m long connection cable, which is directly connected to the logger. Installation is therefore quick and can be done without interrupting the circuit.

Operational Advantages

Using the MA194-350 MiniFlex offers several advantages: Non-invasive measurement protects the user from hazardous voltages and avoids disruptions in the circuit. The flexible design and large encirclement diameter simplify installation on various cable diameters. The high measurement range enables use in a wide range of applications, from small to large currents. Combined with power loggers, it allows detailed analysis of energy consumption and load profiles, which is beneficial for energy efficiency and maintenance planning.