2
0
4
906
2
008
-0
2
6 - EN
LEVEL SENSOR
Product Specifications
EN
2
Product Specifications
2.1
Function
The sensor is designed for use with oil products.
The level sensor is a PTC resistor sensor. It is energized via an intrinsically safe relay.
The PTC resistor warms up if it is enclosed by air and, at the same time as falling current, the
ohmic resistance in the PTC resistor sensor increases. The intrinsically safe relay is in normal
status.
If the PTC resistor is enclosed by liquid, it does not heat up and the current increases. The
intrinsically safe relay switches to alarm position.
The sensor can distinguish between liquid and air.
Caution!
Malfunction or damage through the use of the sensor as a level sensor in glues and paints
Glues and paints can coagulate when heated and stick to the sensor. This can impair the
properties of the sensor during temperature change and the safety and operation of the sensor,
or the complete alarm system, is no longer guaranteed.
Do not use the sensor as a level sensor in glues and paints or in liquids with similar properties.
Level sensor
