Description
HTM FR Floatless relays are versatile and compact floatless relays that are suitable for pumping system control and level alarm annunciations. Standard units are housed in DIN enclosures and can be configured as a controller for water supply or drainage control systems. HTM FR Floatless relays utilise a safe control voltage for level sensing via level electrodes located in the field.
Application
PRINCIPLE OF OPERATION
HTM FR floatless relays are level controllers that detect water levels based on the conductivity of the medium measured by using conductive electrodes. When a relay senses the liquid level measured, the output contacts of the relay are energized and latched. These latched outputs are released when the latching electrode is brought out of the medium measured. The operation repeats as the medium’s level changes to achieve a continuous level control system.
