The AMETEK Drexelbrook Impulse Series continuous time domain reflectrometry level transmitter provides accurate measurement of total level, distance or volumetric outputs. The 3mm transmitter provides continuous level measurement of liquids to ranges up to 50 ft. with a 2-wire 4-20mA HART output signal; it has 5 sensor types and is constructed of 316 stainless steel and Hastelloy C for use in environments classified as hazardous (Class I, Div. 1) with either intrinsically safe or explosion-proof installation requirements. The unit operates in temperatures from -40°F to 392°F and with process pressures up to 580psig (40 bar). It is available with a threaded 3/4-in. NPT or 1-1/2-in. NPT or ANSI flanged process connections.