Description
Multi-electrode level sensors of the OWEN DU series are designed to control liquid levels in open tanks.
3-, 4-, 5-electrode level sensors are available with a length of 0.5 / 1 / 1.95 / 2.5 / 3 / 3.5 / 4 m.
Sensor electrode material – stainless steel. 12X18H10T.
Design. Principle of operation. Application
The principle of operation of a conductometric sensor is based on the difference between the electrical conductivity of air and liquid. This difference is recorded by two electrodes: signal, set at the required level, and common. When the liquid surface comes into contact with the signal electrode, a short circuit occurs between the two electrodes.
Conductivity sensors are used for level measurement in both metallic and non-metallic tanks.
In metal tanks, the number of signal electrodes used for measurement corresponds to the number of measured levels, and the tank wall serves as a common electrode. In this case, the consumer should purchase a sensor with the appropriate number of electrodes (depending on the number of signaled levels) of the required length.
In non-metallic tanks, the number of electrodes must be one more than the number of alarm levels, since one of them serves as a common electrode.
