Level sensors are devices that are capable of determining the level of liquid in a container with accuracy. They are used in fluid control systems to regulate the fluid levels up to a predetermined user-defined level and produce an output electrical signal to automatically open and close valves as required.
Level sensors can clearly define the exact level of fluid as well as displacement, making them ideal for an extensive range of applications across different industrial environments.
Types of level sensors
Level sensors can be categorised depending on a wide range of factors, like the type of fluid that needs to be measured, the environment, mounting style, and so on. However, some of the most common types of level sensors are:
Capacitive level switches
These are non-contact sensors that use a sensing field to provide an accurate reading of the basic full/empty levels.
Vibrating level probes
These types of level sensors possess a rod or fork that produces high-frequency vibrations and uses the changes in the vibration to determine overfill and low levels.
Conductive level switches
These have stainless steel probes to measure liquid levels in reservoirs, closed vessels, ponds, open tanks, etc.
Ultrasonic level sensors
As the name suggests, these types of level sensors generate ultrasonic pulses and calculate the level of liquids as the pulses get reflected by the liquid surface.
Applications of level sensors
Level sensors are widely used in a multitude of applications across different industrial processes. The applications of level sensors include different industries including: