The Optisound VU30 ultrasonic transmitter provides a reliable and accurate (0.15%) continuous liquid level measurement to ranges up to 30 ft. (9.1 m), with a two-wire, 4-20mA, HART output signal. It is made of CPVC for use in Class I, Div. 1 environments with intrinsically safe or explosion-proof installation requirements. Its temperature range is -40 °F to 158 °F (-40 °C to 70 °C).
