Principle of Vibration Velocity Sensor

vibrationspeed sensorprinciple

The vibration speed sensor uses the principle of magnetoelectric induction to convert the vibration signal into an electrical signal. It is mainly composed of a magnetic circuit system, an inertial mass, a spring, etc. There will be a fixed magnet and inertial mass in the sensor housing. When we use a spring element, we It can be suspended on the housing. During operation, when the machine vibrates, the sensor can also be mounted on the machine. If within the operating frequency range of the sensor, the coil and magnet will move and cut off the magnetic force lines, a corresponding Induced voltage, the voltage value is proportional to the vibration velocity value. When connected to a secondary instrument, it can display the vibration velocity or displacement, and can also be transmitted to other secondary instruments and AC voltmeters for measurement.

Advantages of Vibration Velocity Sensors

It is usually used to measure the vibration of bearings, and in a few cases, it can also be used to measure the vibration of rotating shafts. When measuring vibration speed, if the sensor is installed incorrectly or not firmly, the measurement result will be distorted or the sensor will be damaged by vibration. Therefore, The installation method of the vibration velocity sensor should be carefully selected.

The two most common installation methods are screw fixing or magnetic suction seat installation. The screw installation needs to be opened in the equipment, and the screw can be screwed on the shell of the measured object. The installation of the magnetic suction seat is relatively simple, no need to open, and can be directly adsorbed on Direct monitoring is carried out on the shell of the measured object.