Vibrating level switch
Ex, Non-Ex version
Applications
- General purpose vibrating level switch designed to suit all liquids
- Particularly suitable as overflow and dry run protection of pumps, vessels and pipelines
- For use in the petroleum, chemical, water/wastewater, food, beverage and pharmaceutical industries
Special Features
- Robust design for the process industry
- Explosion-protected version
- Low maintenance costs
- Stable and reliable level detection, unaffected by flow, bubble formation, vibrations, build-up or solids in the medium
Description
The core element of the vibrating level switch is the vibrating 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. Irrespective of the mounting position, level changes can be detected very accurately.
The respective switch point can be changed via a pipe extension. The high switch point accuracy can be individually adjusted to the respective application using ten sensitivity levels. It is also possible to set a switching delay of 1 ... 20 seconds with the model TLS-S. For use in hazardous areas, explosion-protected versions are also available.
The vibrating level switches are, depending on the version, suitable for an operating temperature of -100 ... +200 °C [-148 ... +392 °F] and an operating pressure of -1 ... +100 bar [-14 ... +1,450 psi]. The vibrating level switch is suitable for media with a density of 500 ... 2,500 g/cm3 [289 ... 1,445 oz/in3]. The viscosity of the media should be between 0.1 and 10,000 cP [0.24 and 21,190 lb/ft·h].
