The function of the signal isolator can transmit the signal through the whole process of transmission and transportation between each other, ensure the accurate transmission of the signal without distortion and develop the design and use, in the whole process of industrial production, it will be accurate to measure a variety of data information, and then must use different kinds of sensors (temperature, working pressure, total flow rate, liquid level meter, speed ratio, light intensity, etc.). All kinds of sensors have different signal types, and this variety of sensors and secondary instrument panel or control module constitute automatic control system. Signal isolator action.

The function of the signal isolator to ensure that the management of the manufacturing process can be trusted, it is necessary to ensure that the signal transmission between the sensor and the automatic control system on the spot is distortion free, especially the simulation analog signal of small output power is affected by a variety of external influences when transmitted in the natural environment of industrial production, so they must be a reliable transmission channel. Signal isolator action.