R4-Kemi (KR425)

Artnr: 1176
Rsknr: 5632687

Thermistor sensor

Standard sensor for chemical tanks

Sensors for overfill protection and for electronic level monitoring. Suitable for petrol and oil tanks above or underground.

The sensor's sensing element consists of a Teflon-insulated thermistor of the PTC type. PTC = positive temperature coefficient, means that the thermistor when it is passed through by an intrinsically safe current, increases its resistance at the same time as the temperature in the thermistor rises.

Since the thermistor can only reach its higher temperature when it is in air or gas, the amplifier, which is connected to the thermistor, can determine whether the thermistor is in air, gas or liquid.

The sensor is designed for use in the Ex-Zone.

Sensor bracket made of powder-coated zinc casting with R1 ”connection. The thermistor is Teflon-insulated, which enables use in conductive liquids. The sensor can be supplemented with a flange in PVC or acid-resistant stainless steel.

The sensor is manufactured in a standard version between 425 mm and 2000 mm.

The sensor is particularly suitable for use in chemical tanks for eg acids or for ethanol and E85.