What are the methods and sensor selection for magnetic field intensity measurement in electromagnetic measuring instruments for instrument manufacturingг┐

Magnetic field intensity measurement methods and sensor selection in instrument manufacturing

　　Electromagnetic measuring instruments are an indispensable part of modernindustry, especially in the field of instrument manufacturing, with a wide range of applications. From the detection of electronic equipment to the performance evaluation of large equipment, electromagnetic measuring instruments play a crucial role. The measurement of magnetic field intensity is one of the core contents of electromagnetic measuring instruments, and the accuracy of the measurement directly affects the performance and application effect of the instrument.

Firstly, magnetic field intensity measurement methods

The measurement of magnetic field intensity usually adopts sensors such as fluxgate, Hall effect, and transformer. In electromagnetic measuring instruments, the most commonly used measurement methods are as follows:

Fluxgate method: The fluxgate method is based on the principle of the fluxgate sensor for the measurement of magnetic field intensity. It utilizes the sensitivity of the fluxgate to changes in the magnetic field to determine the magnetic field intensity by measuring the displacement of the fluxgate caused by the change in the magnetic field. This method has high measurement accuracy, fast response speed, and is suitable for high-precision magnetic field measurements.

　　Hall effect method: The Hall effect method is based on the principle of the Hall sensor for the measurement of magnetic field intensity. It utilizes the Hall effect to determine the magnetic field intensity by measuring the change in Hall voltage. This method has awide measurement range, is easy to implement, and is suitable for medium and low-precision magnetic field measurements.

　　Transformer method: The transformer method is based on the principle of mutual induction for the measurement of magnetic field intensity. It utilizes the mutual induction characteristics of transformers to determine the magnetic field intensity by measuring the mutual induction voltage of the transformer. This method has a wide measurement range, is easy to implement, and is suitable for medium and low-precision magnetic field measurements.

Secondly, sensor selection

When selecting a sensor, it is necessary to choose the appropriate sensor type according to the specific measurement requirements and environmental conditions. For example, in high-precision magnetic field measurements, fluxgate sensors are the first choice, while Hall effect sensors and transformer sensors are more suitable for medium and low-precision magnetic field measurements. In addition, factors such as the stability, response speed, and cost of the sensor should also be considered.

In general, the measurement methods of magnetic field intensity and the selection of sensors are interrelated. Choosing the appropriate measurement method and sensor is crucial for improving the performance and effect of electromagnetic measuring instruments in instrument manufacturing. With the development of technology, there will be more advanced measurement methods and sensors in the future, providing more possibilities for the development of electromagnetic measuring instruments.