Procedure
1. In the parameter view, select the "Zero point adjustment" parameter [07].
2. Navigate into the parameter view.
Navigating in the views (Page 71)
3. Press the button.
4. The value "0" appears on the display.
5. Confirm the value by pressing the button.
6. Change to the measurement view with the button.
Result
The device displays pressure measurement 0.0 in the set unit.
Depending on the set damping, the settling time is extended until the pressure measurement
0 is displayed.
Note
For devices for absolute pressure, the lower range value is at vacuum (0 bar a).
The zero point adjustment for devices for absolute pressure that do not measure absolute
pressure (0 bar a) leads to incorrect settings.
Note
The effective measuring range is reduced by the amount of the upstream pressure.
Example: With an upstream pressure of 10 mbar, the effective measuring range of a 1300 mbar
pressure transmitter is reduced to a point between 0 and 1290 mbar.
9.2.7
Apply lower range value [08]/Apply upper range value [09]
9.2.7.1
Apply lower range value parameter [08]
Sets the lower range value to the current reference pressure.
Setting range:
Within the measuring limits
Factory setting:
See nameplate (depending on measuring cell)
9.2.7.2
Apply upper range value parameter [09]
Sets the upper range value to the current reference pressure.
Setting range:
Within the measuring limits
Factory setting:
See nameplate (depending on measuring cell)
Parameter assignment
9.2 Parameter assignment over device with display
SITRANS P320/P420 (mA/HART)
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Operating Instructions, 06/2018, A5E44852162-AA