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Initialisation
10 sec
Zeroing
5 sec
Measurement menu
Main menu
Select "Input"
Select "Parameter"
Velocity measurement with pitot tube
Method 1 (limited):
Connect the pitot tube directly to the pressure inlet of the
control unit. Limitation: Only the pressure value is shown
during the measurement. The values for velocity speed and
volume flow are shown when the measurement is complete.
Method 2:
Use the pitot tube preferably with the pressure probe order
no. 0638.1445 due to the optimum accuracy. Measuring
range up to approx. 40 m/s. An additional channel is also
displayed (hPa, m/s, m
The velocity is calculated automatically by the device from
the pressure difference at the pitot tube.
Note
The pitot tube factor of the standard Testo pitot tubes is
1.00 and need not be changed. Enter the factor 0.67 for
the straight testo pitot tubes. For other pitot tubes, ask the
supplier for the pitot tube factor and store.
1 Connect the pressure probe to the probe input or the
pitot tube to the pressure outlet of the control unit.
2 Switch on control unit.
3 Enter the pitot tube factor:
- Press
- From Main menu – Input – Parameter – Pitot factor –
Set value
5 Accept the value with function key
6 Return to the measurement menu with
Select "Pitot factor"
Example measurement
Velocity measurement (pitot tube)
/h).
3
key
Enter value
End
Value is automatically
saved
with the control unit
End
.
.
Measurement menu
35
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