Eigenschaften
Magnetic field measurement	20 μT, 200 μT, 2000 μT
Power density	-
Alarm	-
Dimensions	163 x 68 x 24 mm
Weight	285 g

The CA 40 Gaussmeter/Teslameter from Chauvin Arnoux is a portable digital measuring instrument for detecting low-frequency magnetic fields. It is designed for measuring magnetic induction fields in the frequency range of 30 Hz to 300 Hz and is suitable for use in laboratories and production facilities, particularly when precise adjustment or monitoring of magnetic fields is required. The device is compactly designed and enables precise measurements in various industrial and technical application areas.

Applications

The CA 40 is suitable for measuring magnetic fields in environments where low-frequency alternating fields occur, for example in electrical engineering, testing of electrical installations, or in manufacturing technology. Measurements are taken in the ranges of 20 μT, 200 μT, and 2000 μT, with values specified for each measurement range. The application is particularly useful where precise detection of magnetic induction is required, such as in the analysis of electromagnetic interference or checking switchgear installations.

Functions and Equipment in Detail

The device features a unidirectional probe designed for measurement in a fixed direction. Measurement accuracy is ±(4 %+3 pts), ±(5 %+3 pts), and ±(10 %+5 pts), depending on the selected measurement range. These specifications refer to the deviation of measured values from the actual value and are crucial for the reliability of the results. The frequency bandwidth of 30 to 300 Hz covers the range of low-frequency alternating fields typically found in electrical installations.

Technology Explained Simply

Measurement is performed by detecting magnetic induction, expressed in Tesla (T) or Gauss (G). The CA 40 measures in microtesla (μT), a common unit for weak magnetic fields. The unidirectional probe detects the field in only one direction, which is advantageous for targeted measurements. The stated precision includes both percentage deviations and a fixed error value in points, which is important for evaluating measurement accuracy.

Compatibility and Accessories

For improved handling and protection of the device, a transport case is available. This provides secure transport and protection against mechanical impacts. The use of the transport case is optional and serves as a supplement to device care.

Mounting and Installation

The device is used directly at the measurement site without additional mounting or installation. The probe is held at the location where the magnetic field is to be measured. Operation is performed via the device’s control interface, which is designed for selecting measurement ranges and displaying results. Measurement is contactless, meaning no direct connection to the object under test is required.

Advantages in Operation

The CA 40 offers high measurement accuracy for low-frequency magnetic fields and is suitable for use in various technical environments. Its compact design and low weight of 285 g enable mobile use. Dimensions of 163 x 68 x 24 mm ensure a convenient size that fits comfortably in the hand. Measurement is performed without additional tools, making operation simple and quick. The precision specification in percent and points allows for accurate evaluation of measurement results.