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Round duct, Rect duct and Duct area are used to perform a duct
traverse using a pitot probe or thermoanemometer probe. For more
information on how to perform a duct traverse, refer to
Application
Note
AF-106.
Press/Kfact allows for calculating flow rate from diffusers or flow
stations with pressure taps using the instruments pressure ports and
Kfactors. The Kfactors are obtained from the diffuser or flow station
manufacturer. For more information, refer to
Application Note
AF-114.
Up to 5 rectangular ducts, 5 round ducts, 5 duct areas, and 5 Kfactors
can be pre-programed for quick use on a jobsite:
When Flow is set as the Primary measurement in the Display Setup
menu, the dimensions or Kfactor will also be displayed:
N O T E
For flow measurements with round, rectangular or duct area, velocity
must be set as a secondary measurement in order for flow readings
to appear when using the pitot or AF probe.
16
Chapter 3
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