Using The S-Tube Probe - Wohler A 400 Mode D'emploi

Fig. 6: Measurement with S-tube probe
4

Using the S-tube probe

NOTE!
The Wöhler S-tube Pitot probe supplies a better
useful signal than a standard Prandtl tube with the
same velocity. Therefore, it is necessary to select
a Pitot factor of 0.93 in the Setup menu in order to
obtain a calibrated display.
Enter or check the parameters in the Wöhler me-
ter (A 400, A 600, DC 100
performance, diameter of the exhaust duct, out-
side temperature and air pressure). Observe the
instructions given in the manual of the meter.
Zero the pressure sensor of the meter.
Connect the S-tube probe to the meter observing
the instructions of the meter manual.
Using the S-tube probe
PRO
or DC 430): burner
EN
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