Conductive liquid level controls
By Mary Del
Carlo Gavazzi’s new generation of multi-function conductive liquid level controllers – the CLD/P Series – allows for the monitoring of two to four level points, with simple selection of functions, including filling and emptying, as well as a tank-well option, which allows a single device to control levels in an above ground tank and underground well to prevent either from running dry. A master-slave option allows up to seven controllers to be directly connected to each other. A new single-point controller is added to the family, which includes a time delay function to allow for filling or emptying of a tank with a single level point. All functions and adjustments of the CLD/P Series are made via rotary switches and potentiometers on the face of the unit; no dip switches or push buttons are used. LEDs on the controllers give clear indication of the power and relay output states. The controllers are in compact 17.5- or 35-mm wide housings, with DIN-rail mount or 11-pin plug connection.