For continuously monitoring from outside a pipe. Includes an isolated 4-20mA output and 3 programmable control relays. Ideal for waste water, chemicals, viscous liquids and slurries. No obstruction and no contact with the moving liquid. The standard sensor mounts on any pipe over 1" (25mm) ID. Features easy keypad calibration. Displays and totalises in gallons, litres or any unit of measure. Shielded sensor cable self-tunes to extended lengths. Accepts dry contact input for back flow rejection. Options include built-in data logger and intrinsically safe sensor for installation in hazardous rated locations.