Dynasonics DP7 Insertion Doppler Probe

The Dynasonics DP7 Insertion Doppler Probe provides a fully customizable measurement accessory to the Doppler Ultrasonic Flow Meters. Series DP7 hot-tappable insertion probe transducers are available for installations on pipe systems that do not permit ultrasound penetration. The DP7 inserts into the pipe wall and directly contacts the flowing liquid. The Dynasonics DP7 can be located up to 990 feet (300 meters) from the DFX display enclosure utilizing RG59 coaxial cable.

Each transducer utilizes a piezoelectric crystal to transmit ultrasound through a pipe wall and into a flowing liquid. The ultrasonic signal is reflected from suspended solids or entrained gases drawn out of solution by hydraulic disturbances such as a 90° elbow. (This unit can measure the flow rate of clean liquids by mounting the transducers 1 to 3 pipe diameters downstream of the 90° elbow.) A second transducer receives the reflected sound and the DFX series meter's circuitry compares the transmitted and received frequencies. If the liquid is moving, a frequency (phase/Doppler) shift occurs which is proportional to fluid velocity.