KROHNE Inc. has added the OPTISOUND VU3X Series continuous ultrasonic level transmitter to its extensive measurement product line to meet the specific level or open channel flow measurement needs of the North American industrial and municipal markets. The OPTISOUND VU30 ultrasonic transmitter provides a reliable, repeatable, and highly accurate (0.15%) continuous level measurement of liquids. It is capable of liquid level measurement to ranges up to 30 feet with a 2-wire 4-20mA, HART output signal. The OPTISOUND VU30 sensor is constructed of CPVC for use in environments that are classified hazardous (Class I, Div. 1) with Intrinsically Safe or Explosion Proof installation requirements, temperature range from –40F to 158F, and with process pressures up to 50 psig. The system is available with either a 2-inch NPT or 2-inch BSP process connection. (