The vibration sensor of shaft vibration transmitter mainly monitors the vibration of rotating machinery. Each equipment has its own vibration standard. If the vibration value exceeds, the machine fails, so the vibration sensor plays a protective role to the vibration.

Vibration sensor is divided into two kinds of magnetoelectric and piezoelectric, magnetoelectric structure is simple, the price is low, but the accuracy is poor, now commonly used is the piezoelectric sensor, the measurement accuracy is high.

The vibration sensor first senses the vibration acceleration, obtains the velocity through integration, and obtains the displacement through quadratic integration. However, the acceleration and displacement are affected by the frequency. Meanwhile, the national vibration standard is called vibration intensity, which is the effective value of vibration velocity.

Vibration velocity sensors generally consist of internal permanent magnets, supporting springs, coils, housing and signal cables. Generally speaking, the speed sensor is directly and the measured object is rigidly connected together; When the measured object vibrates, the velocity sensor moves with the measured object.

But because of the existence of the support spring in the speed sensor, the permanent magnet and the coil do relative motion, so that the coil cutting magnetic force line, shaft vibration transmitter speed sensor becomes a small generator; The faster the vibration speed of the measured object, the higher the voltage output by the sensor, that is, the vibration speed is proportional to the output voltage.