The CF Echo II is a compact Ultrasonic heat meter suitable for solar, (not suitable for glycol ) hot and cold water installations with electronic data processing, producing a dynamic range exceeding Class C. Flows can be measured from Qp 1.5 to 15 m3/h (DN15 to DN50) with stable accuracy. The meter kit consists of a lithium battery powered energy calculator with Mbus/pulse output, two temperature sensors with 1.7 m leads and an Ultrasonic water meter with BSP threaded unions, nuts and washers. Energy calculator can be meter or wall mounted within 1.3 m with signal cable supplied and its lithium battery has a 10 to 12 year life depending on usage. Meter to be installed with 5 pipe diameters of straight pipe before the inlet. Complies with RHI, BS EN 1434-2/+A1 Class 2, MID approved.