Rosemount’s 2130 vibrating level sensors work on the principle of a tuning fork to deliver accurate and reliable level measurement unaffected by turbulence, foam, vibration, solids content, coating products, and liquid properties.
The switches forks are oscillated at their natural frequency using a piezo- electric crystal. When forks come into contact with a fluid the oscillating frequency change that occurs is detected by the 2130 level switch and causes a change in output state.
The 2130 vibrating level sensor is simple to install and requires no calibration or maintenance. Internal diagnostics and LCD lights give a visual indication of the unit’s operational status and health and a magnetic test point allow for easy functionality checking.

Designed for operation in process temperatures from –40 to 180 °C
Adjustable switching delay prevents false switching in turbulent or splashing applications
’Fast Drip’ fork design gives quicker response time when mounted horizontally, especially with viscous liquids
Rapid wet-to-dry time for highly responsive switching
Fork shape is optimized for hand polishing to meet hygienic requirements
No moving parts or crevices for virtually no maintenance
Built-in diagnostics continuously check electronic and mechanical health
Fork conditions detected including internal and external damage, coated or blocked, and extreme corrosion
Ideal for critical alarm duties

Overfill protection
High and low level alarms
Pump control or limit detection
Run dry or pump protection
Hygienic applications
High temperature applications

Vibrating Liquid Level Switches