Qt621 is a full function portable transit-time ultrasonic flow meter. No matter you want to quickly verify the flow reading of another meter or to
data log flow system values over an extended time period, the QT621 meter is a good choice. The innovative design includes matched precision transducers
and signal processing circuitry to accurately measure the flow of most liquids over a wide range of velocities. Clamp-on transducers create no wear, zero pressure loss,
and do not require process interruptions to install them since they are attached to the outside of the pipe. The meter can be easily moved and installed in different pipes
and convenient to carry site to site. Its portability makes it an excellent choice for measuring flows throughout the plumbing infrastructure to verify sensor pump and valve