IFM PQ3 Series, Руководство по эксплуатации

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9.3.4 Zero-point calibration
► Select [coF] and set a value between -2 % and 2 % of the measuring
span� The internal measured value "0" is shifted by this value�
As an alternative: Automatic adjustment of the offset in the range 0 bar ± 2
% of the measuring span�
► Make sure that there is no system pressure or that there is a differential
pressure of 0 bar or that it is as close as possible to the 0 bar mark�
► Press [Mode/Enter] until [tcoF] appears�
► Press [Set] and keep it pressed�
> The current offset value (in %) flashes briefly�
► Release [Set]�
► Briefly press [Mode/Enter] (= to confirm the new offset value)�
Reset of the taught value:
► Select [coF] and set the value [0]�
9.3.5 Differential pressure measurement: optimisation of the sensor
accuracy
During differential pressure measurement the sensor accuracy can be
optimised: An average system pressure value is entered that is close to the
operating pressure on the main connection (G1/8):
► Select [SySP] and then briefly press [Set]�
> The currently set value is displayed�
► Press [Set] and keep it pressed�
> After 5 s: The average system pressure value can be set in the range
of 0���+10 bar and in steps of 0�2 bar (unit depending on the setting of
[uni])�
► Briefly press [Mode/Enter]�
> The new set value is confirmed�
9.4 Service functions
9.4.1 Read min/max values for the system pressure
► Select [Hi] or [Lo], briefly press [Set]�
[Hi] = maximum value, [Lo] = minimum value�
Delete memory:
► Select [Hi] or [Lo]�
► Press [Set] and keep it pressed until [----] is displayed�
► Briefly press [Mode/Enter]�