2024.5.12
4 Wire – 3 Wire – 2 Wire Ultrasonic Level Transmitter
We often hear about 2 wire ultrasonic level transmitter, 4 wire ultrasonic level transmitter, etc. Ultrasonic level transmitter can be divided into two-wire system, three-wire system and four-wire system. Ultrasonic level transmitter emits ultrasonic pulses from a sensor. After the sound wave is reflected by the liquid surface, the sensor receives it. Use an overvoltage transistor to convert it into an electrical signal. The distance between the sensor and the measured liquid surface is calculated from the time between the emission and reception of the sound wave. Not affected by the viscosity......
