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This is the procedure:
1. Fill the silicone hose with water (at least 50 cm water column).
2. Connect the hose either directly to the centre inlet of the differential pressure sensor, or
directly to the front of the pitot tube.
3. Press and hold "RUN" on the GSU and switch on the electronics.
Hold the "RUN" button pressed in until you see the message:
Cal. AirSpeedSns
Set 40cm water
Airspeed
Sensor
Airspeed
Sensor
4. Now set the end of the water column at the same height as the inlet of the differential
pressure sensor (or the pitot tube), and press the "INFO" button (= defines zero point).
5. The final step is to hold the end of the water column exactly 40 cm (linear measurement)
higher than the zero point defined under Step 4. When you have done this, press the
"MIN/MAX" button. The screen should now show h=40.0 at the top right of the screen. To
test whether the calibration process was successful, move the end of the water column
down, and read off the height on the ruler. The GSU will now display the calculated water
column height (h=xx.x) at top right of the screen. The value you find on the ruler should be
the same as the value displayed on the screen. You can repeat steps 4/5 as often as you
like. The calibration value displayed at bottom right of the screen should vary between 6000
and 10,000 (default = 8560).
6. The final step is to press the "MANUAL" button on the GSU to store the calibration data
determined by this process. The Jet-tronic now stores the calibration data and reverts to
normal operation.
40cm
57
Schritt 4
Step 4
Schritt 5
Step 5
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