Static pressure determination
For the static pressure determination requires first to disconnect the positive end of the pitot tube then take the reading of velocity pressure.
Use the following formula for the calculation. For measurement of static gas pressure pitot tube Should be rotated by 90degree from the position of actual Δ P measurement.
This would provide better accuracy.
Ps may be calculated as Ps = P bar ± (Δ Ps / 13.6)
Where:
P bar = Barometric pressure in mm mercury column
Ps = Stack gas velocity pressure, mm water column
Ps = Static pressure mm Hg column.
Density of Hg = 13.6
For the static pressure determination requires first to disconnect the positive end of the pitot tube then take the reading of velocity pressure.
Use the following formula for the calculation. For measurement of static gas pressure pitot tube Should be rotated by 90degree from the position of actual Δ P measurement.
This would provide better accuracy.
Ps may be calculated as Ps = P bar ± (Δ Ps / 13.6)
Where:
P bar = Barometric pressure in mm mercury column
Ps = Stack gas velocity pressure, mm water column
Ps = Static pressure mm Hg column.
Density of Hg = 13.6
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