The Sonic-Pro S4 in-line ultrasonic flowmeter from Blue-White Industries has no moving parts or internal liners to wear out. In-line pipe fittings facilitate meter installation. The meter is capable of measuring water flow using the Transit Time method. A low-power mode permits battery operation for limited functions. Optional data communication protocols include Industrial Ethernet, Modbus RTU, Modbus TCP, PROFIBUS TPV1 and PROFINET. 714/893-8529; www.blue-white.com.