Signal amplifier ELECTRA – VNR 23M

measuringfor sensorsDIN rail

This control unit with double measuring channels was designed as low cost interface for conductive level probes and is used to control liquids that have a minimum electrical conductivity of 8 µS. The system is based on measurement of the conductivity of the liquid to be controlled and works with low potential and with alternating currents, in order to avoid the incrustation of the electrodes and / or perforation of the tank normally caused by the use of direct currents, which cause a galvanic action on materials. The contact of the electrode with the liquid under control determines the actuation of a relay inside the control unit. The presence of two measurement channels simultaneously allows to realize systems of control, metering, and safety. ● Adjustable sensitivity and delay. ● 2 measuring channels ● Microprocessor technology ● DIN rail mounting