The Principles and Types of Level Switch Vibration
A level switch vibration type is ideal for point level assessment. Moreover, the vibration type level switch is an apt choice when it comes to detect the levels of granulated materials. The working principle of the vibration type level switch is based upon detecting the alterations in the harmonic frequency. In other words, when the sensor detects the presence of the target media, it gives rise to harmonic frequency. They are also used as overfill protection devices.
Working Principle Of The Vibration Type Level Switch
The working principle of the level switch vibration type is entirely based on resonance frequency. In usual conditions, the edge of the tip wavers at its natural frequency. When the switch comes in contact with the contents, it stops the vibration. When the vibration halts, the frequency also changes. This change in frequency can be gauged by sensors. On the other hand, when the liquid level subsidizes, the blade again oscillates at its natural frequency.
Vibration type level sensors comprise of highly sensitive areas at their rod tip only. Nowadays, there are compact vibration level switches. These can facilitate measurement even in small and compact containers. These sensors are usually constructed with steel which facilitates deploying them in tough operational situations. The resonance frequency of the switch is caused by piezoelectric elements. Note that the signal is processed as a relay output in the form of N.O or N.C.
Types Of Level Switch Vibration
Usually, there are two types of liquid level switches. They are the point level detectors and variation level detectors. It is important to note here that point level switches have to be mounted. It is because the sensing tip should come in contact with the fluid. They are simpler to set up and can be easily calibrated. In case of level switch vibration type; there is no need for conditioning the additional signal.
Features Of The Vibration Type Level Switch
Here is the list of the features of the vibration type level switch.
Only the vibrating blade’s tip is sensitive. The base is immune to any kind of sensitivity
The switch rotates in such a manner that it requires zero maintenance
Vibration type level switch facilitates maximum versatility
It is unaffected by the alterations of the environment
Sapcon is a familiar name in the domain of process control automation. They are a family managed business and are one of the very few companies to have an extensive R&D team.