What is an accelerometer and what are its types
What is an accelerometer and why do we need accelerometers? An accelerometer is a device that can be used to measure vibration and shock. The...
Category : Vibration Measurement
What is a fotonic sensor?
A fotonic sensor is a fiber optical sensor and it can be used to do the displacement measurement. This sensor could do non-contact measurement and...
What is an eddy current sensor?
An eddy current sensor is a displacement measurement sensor it can be considered as the improved version of an inductive proximity sensor. This sensor is...
What is a tactile sensor? and what are its types
What is a tactile sensor and what is meant by a tactile sensor A tactile sensor can measure any physical interaction with its environment. This...
Why we use Negative Voltage in Vibration Measurement ?
Vibration meters use PNP transistors instead of NPN because they are inexpensive. The PNP transistors used by the circuits needed a negative bias voltage rather...
Why we use Negative Voltage in Vibration Measurement?
The short answer is that when Don Bently worked on building solid-state versions of the eddy-current measuring system, he had a choice between using N-P-N...
Theory of Vibration sensors
Introduction Sensors used to measure vibration come in three basic types: displacement, velocity, and acceleration. Displacement sensors measure changes in distance between a machine’s rotating...
Introduction to Vibration measuring devices
Definition Basically, vibration is oscillating motion of a particle or body about a fixed reference point. Such motion may be simple harmonic (sinusoidal) or complex...
Vibration measuring insruments, Accelerometers
The instruments which are used to measure the displacement, velocity or acceleration of vibrating body are called vibration measuring instruments. What is machine vibration? Machine...
Vibration Measurement – Accelerometer
AccelerometerAccelerometers are a piezo-electronic (crystal) device. A pre- loaded crystal is charged with current and as the crystal is compressed or de-compressed by vibration an...