Micronics flowmeter measures outlet flow on cooling water circuit
A leading UK power provider uses a Micronics Doppler Flowmeter to measure the outlet flow on a cooling water circuit in a power plant in Newark-on-Trent to verify the accuracy of an installed meter. RWE Generation UK, with an installed capacity of more than 8.5GW produces more than 10 percent of British Electricity, including the largest fleet of gas fired power plant in Britain
Andrew Mosley, Station Chemist at RWE Generation UK’s Staythorpe Power Station had successfully used Micronics flowmeters in the past. “I had complete confidence that the PFD550 Doppler Flowmeter would deliver an accurate measurement of flow. It simply needs to be clamped onto the outside of a pipe meaning that the day-to-day running of the plant is not interrupted when using it. And because the sensor is mounted on the outside of the pipe, there is no contact with the moving fluid.” It is particularly useful in projects where a permanent flowmeter is not required or to temporarily replace installed flow transmitters. The ultrasonic sensor straps onto the outside of pipes and measures flow in any pipe that conducts ultrasound. The PF D550 ultrasonic sensor injects high frequency sound through the pipe wall and into the flowing liquid. Gas bubbles or solids suspended in the liquid reflect the ultrasonic signal back to the sensor. When this sound is reflected it is returned to the sensor at an altered frequency. This frequency shift is called the Doppler Effect. The PF D550 continuously measures the change from its transmitted frequency to the received frequency to accurately calculate flow.