The Arrow Hunter PLUS – Compact Version ultrasonic clamp-on flowmeter from ECHO Process Instrumentation is a solution for nonintrusive flow measurement. It uses transit-time technology to provide accurate flow measurement of plus-or-minus 1.5 percent. The AH+CV comes with the XTT+FSSA (pipe diameters of 1 to 4 inches) or XTT+FSSC (pipe diameters of 2 to 48 inches) transducers depending on the diameter. It comes standard with a 4-20 mA, an open collector and a relay output. A RS485 Modbus is optional. 850/609-1300; www.echopi.com.