Capacitive level switch for solids.
Applications
This capacitive level switch has been designed primarily to detect solids (powders, pellets, granulates etc.). They are used mostly for high and/or low level detection or as a start/stop control for a conveyor or mixer. These level switches differ from one another in size and installation facilities. They are not suitable for abrasive and heavy products such as sand, gravel and limestone. Please contact Endress+Hauser for information about alternatives for these applications.
Function
The sensor forms a capacitor with its internal earth screen. Capacitance is determined by the difference in the dielectric constant of air in relation to the product to be detected. As the sensor is covered or uncovered by the product, this value will either fall short of or exceed switching capacitance, thus activating the switch.
Installation guidelines
The Nivector FTC 968 is installed in the side of a silo or vessel and preferably in a special holder, thus enabling periodic inspection. In addition, this holder protects the Nivector against wear.
- No moving parts (no maintenance)
- For lightweight products
- Simple installation
