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The flow element Parallel Plate Pitot (AF-PPP) is a pressure averaging pitot array designed to operate in air velocities from 50 to 5000 fpm (0.25 to 25.38 m/s). The AF-PPP has a unique design with the static ports on the side of the parallel plates which allows a smooth laminar boundary layer to form prior to the static pressure measurement. This design allows static pressure readings to be made at a much lower velocity than is normally associated with conventional pitots. The AF-PPP does not “boost” the static signal to give a higher output—it reads the true static pressure value.
The AF-PPP’s design minimizes the need for straightening vanes of honeycombs when it is installed in ductwork. When used as single plane measurement device in ductwork, the AF-PPP should be installed in the plane of the last bend.
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