Level switches, based on the conductivity principle, can be applied to liquids with conductivity higher than 10 µS/cm. For detecting the level, probes are immersed into the tank. These probes (and the tank wall if conductive) serve as contacts of an electric circuit.
Operating Principle:
ConductivityFeatures:
KRK-512
- Level switching
- Filling-emptying control
- Selectable NO/NC relay function
- Adjustable sensitivity
- Adjustable delay time,
- Adjustable delay ON and delay OFF time
- Delay time display
- AC/DC versions
KRK-522
- 2 independent relay outputs for 1 level
- 2 independent relay outputs for 2 independent levels
- 2 relay outputs for pump control
- Selectable NO/NC relay function
- Adjustable delay ON and delay OFF time
- Adjustable sensitivity
- AC/DC versions
KKH-2_2
- Probe and relay in one unit 1 or 2 independent relay outputs for pump control or differential level switching
- Selectable NO/NC relay function
- Switch on/off delay
- Adjustable sensitivity A
- C/DC versions
- Delay time display
- Adjustable delay ON and delay OFF time
Application:
Level switches, based on the conductivity principle, can be applied to liquids with conductivity higher than 10 µS/cm. For detecting the level, probes are immersed into the tank. These probes (and the tank wall if conductive) serve as contacts of an electric circuit. Probes can be of single or multiple rod versions. A maximum of 4 proberods can fit in the multiple probe with an additional reference probe if tank wall is not conductive. The probe length should be in accordance with the level to be detected. Filling liquid in the tank will change the electrical conductivity between tank wall (or the reference probe) and probes. The established connection will be converted and will activate a relay providing for output.
