6 Using the product
38
and draught rating as per EN ISO 7730 is displayed.
5. [ ] → Save and close.
- Measurement protocol is saved under the selected measuring
point.
6.6.6. Pitot tube measurement
To measure flow with a Pitot tube, the following parameters must
be entered in the measuring point (manual entry or measured
values).
• Temperature
• Relative humidity
• Absolute pressure
These three paramet
These three parameters are taken into account in the calculation of
the flow.
The Pitot factor for Pitot tubes is generally the same and must be
entered:
• Prandtl Pitot tubes (0635 2045, 0635 2145, 0635 2345), Pitot
tube factor: 1.00
• Straight Pitot tubes (0635 2043, 0635 2143, 0635 2243), Pitot
tube factor: 0.67
• Air flow velocity matrix (ID no. 0699 7077): Pitot tube factor:
0.82
For Pitot tubes from other manufacturers, the Pitot factor can be
found in the instruction manual or you should ask your supplier.
For carrying out the measurement, see Measuring program, page
31 or see Grid measurement, page 32.
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