The Type 8081 ultrasonic flow sensor is intended for the measurement of water flows which may be slightly charged with contaminants. It consists of an electronic module and a brass fitting with a built-in measuring tube. It enables a control loop to be established. The electrical connection is made via an 5-pin M12 fixed connector. The sensor features, depending on the version, a pulse output or a pulse output and a 4-20 mA current output. Each version is available for 5 flow ranges.