Applications
- Conductive level limit detection in process or storage tanks for all kinds of liquids:
- for conductivity as of 0.02 mS/cm
- for temperatures from –200 °C to 250 °C
- for pressures from –1 to 160 bar
- As overfill protection with line monitoring even in Ex-area Zone 0
- For minimum or maximum detection in tanks
- As pump protection in pipes
- As capacitive probe, e.g. for overfill protection
- Can be used for two-point control
Your Benefits
- For aggressive medium thanks to corrosion-resistant materials for rod and insulation
- Can be used in steam boilers thanks to ceramic insulation resistant to steam and hot water
- Can be deployed particularly with high pressure or vacuum
- Subsequent probe length shortening possible
- WHG (German Water Resources Act) + ATEX II 1/2 G approval
- Can be connected to separate switching units FTW325, FTW470Z, FTW570Z, FTC325, FTC625
- Safety thanks to line monitoring
- Long operating life and reliable function without wear since no moving parts in the tank
Measuring principle
Alternating voltage is supplied to the probe by means of a transmitter (e.g. Nivotester FTW325). As soon as the conductive liquid forms a connection to the partition and the sensor, a measurable current flows which causes the sensor to switch.
The use of alternating voltage prevents corrosion on the probe rod and electrolytic corrosion of the medium.