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EFK
Flow switches check the passing of both gas
and liquid fluids, according to the principle of differential
thermal analysis. The determining factor is the compensation
of the thermal difference between the pre-heated sensor
and the cold one. The electrical value obtained, proportional
to the flow, is conveyed to a compensator producing
a PNP output signal. The instruments are manufactured
in compact version including both the sensor and the
electronics. This is provided with a nine led indicator,
which allows setting the alarm threshold when combined
with an adjustment potentiometer.
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