
7-10
EB 9510 EN
Start-up and configuration
Performing zero calibration
The user level must be set to 'Specialist' for the zero calibration (see section 7.2).
1. Press key (in start screen) to go to the main menu.
2.
Select [Start-up| 1] with
or
key and confirm with
key.
3.
Select [Pressure sensor span | 1.10] with
or
key and confirm with
key.
4. Select 'Set span' with or
key and confirm with
key.
5.
Select 'Reset span' with
or
key and confirm with
key.
6. Press
to exit the [Pressure sensor span| 1.9] parameter.
7.
Select [Zero point of pressure sensor | 1.8] with
or
key and confirm with
key.
8.
Select 'Set zero' with
or
key and confirm with
key.
The current values for measured value and zero are displayed.
9. Press
key to set zero.
After zero calibration is completed:
Î
Close the open screw plug.
Î
Close the bypass valve.
Î
Slowly open the shut-off valves (+) and (–).
b) Pressure sensor span
For a more detailed calibration of the pressure sensor, the measuring range (span) can also
be set and checked in addition to the zero point.
Î
Observe the sequence:
1.
Calibrating the zero of the pressure sensor (see section 7.5 a)).
2. Set and check the measuring range (pressure sensor span).
Î
Create a defined reference pressure (e.g. 10.0 bar) at the low-pressure pipe (p
2
).
Note
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