The Valcom 27L Float Level Transmitter has a toroidal magnet placed inside the float which drives, without contact, Reed contacts located inside the guide pipe. Moving along the guide pipe the float changes the reed contact status. These variations are then acquired by the electronic board and converted into a current signal.
This system enable a continuous level measurement (output 4-20mA) with high repeatability and linear level indication independently from tank shape, or allows to realize on-off controls by using two floats (output on-off 5-15mA). Reed chain replacement can be done without dismantling the Transmitter from the process and doesn’t need any recalibration.
