HAFFMANS c-DGM/i-DGM
Page 44 of 78 c-DGM/i-DGM
7.2.1 Calibration instructions
To calibrate the pressure sensor, proceed as follows.
You can accept the value with the “Enter” button and change the value with the Up and Down
arrow buttons.
Make sure you have selected the correct units!
In order to perform the calibration correctly and accurately, you must know the local
atmospheric pressure. Read this from an accurate barometer (± 5 mbar) or ask your local
meteorological service.
Atmospheric pressure table
[mmHg] [bar] [kPa] [kg/cm
2
] [psi]
780
773
765
758
750
743
735
728
713
675
638
600
1.04
1.03
1.02
1.01
1.00
0.99
0.98
0.97
0.95
0.90
0.85
0.80
104
103
102
101
100
99
98
97
95
90
85
80
1.06
1.05
1.04
1.03
1.02
1.01
1.00
0.99
0.97
0.92
0.87
0.82
15.1
14.9
14.8
14.6
14.5
14.4
14.2
14.1
13.8
13.1
12.3
11.6
Table Tab. 7.1 Conversion of the atmospheric
pressure
Method:
1. Press the “Enter” button for at least 3 seconds.
The input menu is shown.
2. Press “Enter” again.
The main menu is displayed.
3. Use the Down arrow button to select the “Calibration”
Down and press the “Enter” button.
4. Select “Calibration pressure” and press the “Enter” button.
You are now in calibration mode and the
cursor is on the parameter “P-Atm”.
HAFFMANS BV
V02.04 SER.NO. : 10000
Calibration pressure
P-Atm : xx.xx bar
P-Low : 0.0 bar
P-high : xx.x bar
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