The TTFM 6.1 transit-time flowmeter from Greyline Instruments includes powerful digital signal processing and advanced algorithms to provide easy and accurate flow measurement of clean and relatively clean fluids (water, oil, chemicals). It offers improved performance in a wider range of applications, operating conditions and pipe materials. The clamp-on technology is fast and easy to install. It monitors flow rate, volume total, run hours, and diagnostic information through only two wires with the optional MODBUS RTU serial communication option. 888-473-9546; www.greyline.com; Booth 5949.