Siemens SITRANS F Operating Instruction page 24

Commissioning
6.1 Zero point adjustment
3. Stop the flow while pumping by closing the outlet valve and then the inlet valve
Note
 The flow must be completely stopped and the sensor completely filled with gas.
 The zero point adjustment has to be carried out under stable pressure conditions.
4. Perform an auto zero point adjustment:
5. After count down (30 s.), the actual zero point is displayed and the meter ready for
See also
For further information on performing an auto zero point adjustment, refer to the relevant
transmitter Operating Instructions.
22
MASS 6000
Choose menu entry "Reset mode"
-> Zero adjust
-> Zero adjust auto
-> Zero adjust
operation.
SIFLOW FC070
Choose the SIMATIC PDM menu
-> Device
-> zero adjust
Operating Instructions, 02/2011, A5E02508199-01
SITRANS FCS200