A vibrating level switch is a limit level switch for monitoring fill levels. It is used in many industries to detect the presence of liquids or solids in a container.
The core element of the vibrating level switch is the so-called tuning fork with integrated vibration drive. When the vibrating tuning fork is immersed in the medium, the resonance frequency of the tuning fork decreases. The frequency change is detected by the electronic circuit and is converted to a switching signal.
In general, vibrating level switches are used for two very important functions: On the one hand, the vibrating level switches are used as an overflow control to prevent containers from overflowing when reaching a certain limit level. On the other hand, vibrating level switches are used as a dry run protection so that, for example, pumps switch off in time if there is not enough medium in the intake pipe. The vibrating level switch can detect when a pump runs dry and thereby prevent damage to the pump.
In contrast to traditional float switches, vibrating level switches offer a very compact design, which is especially suited for monitoring limit levels in pipeline systems. Another benefit is that they are independent from the mounting position, making the vibrating level switch versatile.
There are also vibrating level switches for solids, such as granules or powders. Float switches, by contrast, can only be used to detect liquid media.
The robust design and easy installation make vibrating level switches a popular choice for many industrial applications. Their ability to work precisely under various conditions makes them an essential tool in modern process control and automation.