Profile: Dynaflox Shanghai Co., Ltd. is a manufacturer of ultrasonic flow meters. We are an ISO 9001:2000 certified company. Our products include ultrasonic transmit-time flow meters, ultrasonic thickness gauges, open channel ultrasonic flow meters, GPRS systems, partially filled pipe ultrasonic flow meters and ultrasonic heat flow meters. Our DMDFB Doppler ultrasonic flow meter is designed to measure volumetric flow of liquid within closed conduit. The pipe line must be filled full of liquids, and there must be a certain amount of air bubbles or suspended solids in liquid. The Doppler ultrasonic flow meter can display flow rate and flow totalizer, and is configured with 4-20 mA.