F8 series ultrasonic energy meter is a state-of-the-art transit time ultrasonic flow meter. Designed using the latest digital technology and low-voltage broadband pulse transmission. Comparing with other traditional flow meter or ultrasonic flow meter, it has TVT technology designed, less hardware components, low voltage broadband pulse transmission and low consumption power. Clear, user-friendly menu selections make flow meter simple and convenient to use. Daily, monthly and yearly totalized flow. F8 can realize the bidirectional independent measurement function of "cold" and "hot". And it is suitable for the continuous measurement of cooling and heating energy of central air conditioning's chilled water and cooling water, meeting different measurement requirements.