Vibration Sensors will help solve unnecessary downtime, as well as machine damage which in the long run could result in financial loss. 

Vibration Sensors 

What are the common types of vibration sensors and in short, how to choose a vibration sensor? 

Definition 

Firstly, we will define vibration. Vibration, in short, is a ‘mechanical oscillation around an equilibrium position of a machine; part or merely the back-and-forth motion of a machine and or component’. 

Applications

Generally speaking vibration in industrial equipment is quite normal, however, it can also be a sign of a major problem.  In machine condition monitoring, we are dealing with two types of vibration, axial (also known as thrust) as well as radial vibration. 

To be precise axial vibration is a parallel shafting vibration which runs alongside the shaft of a motor. For instance, a shaft misalignment could cause axial vibration. Radial vibration will occur as a force applied outward from the shaft. There will be Radial vibration if the motor is unbalanced,for example, this will occur if there is a broken fan blade as well as a bent shaft. Let us now have a look at the different types of sensors to monitor these types of vibration. 

Accelerometers

Let’s talk about an Industrial accelerometer. Accelerometers are instruments or field sensors that measure the velocity and acceleration of oscillation of a structure. It will have a transducer that converts mechanical force, caused by vibration or a change in motion, into an electrical charge using the Piezoelectric effect. There are two types of Piezoelectric accelerometers:  high impedance and low impedance. 

High impedance accelerometers sends a signal directly to your measurement instrument.  Notably, you will find these in laboratories or high-temperature applications. Low impedance accelerometers have a charge transducer at its front end. As well as a built-in microcircuit that will convert that charge into a low impedance voltage this type of sensor easily will interface with standard instrumentation, which will make it often used in industry. Install these permanently in the event that there is a high risk application. 

Contact us 

Contact our technical department at MEC, and they will be happy to answer any questions and advise you on the correct sensor for your application. Click here for more information.