18 Chapter 3
Round duct, Rect duct and Duct area are used to perform a duct
traverse using a pitot probe or thermoanemometer probe.
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.
Up to 5 rectangular ducts, 5 round ducts, 5 duct areas and 5 Kfactors
can be pre-programmed 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:
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.
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