The DFM 6.1 Doppler flowmeter from Greyline Instruments provides easy and accurate flow measurement of sewage, biosolids, slurries and viscous liquids. Its clamp-on technology does not require pipe penetration, cutting or welding, greatly reducing costs. It offers fast, simple installation in typically less than 10 minutes, with high accuracy. A built-in five-button keypad, intuitive configuration menu and large backlit LCD make it operator-friendly. At a glance, the user can view flow rate, flow direction, totalizer, relay status and important diagnostic information on the large LCD. It has an isolated 4-20mA output for flow rate, two relays for pulse output or alarms and 26 million-point data logger for greater flexibility of data monitoring and control. The user can monitor flow rate, volume total, run hours and diagnostic information through only two wires with the optional Modbus RTU or HART serial communication option. 888-473-9546; www.greyline.com.