16
Programming
Version: FAU_M_EN_170308_E004
3.4.1.
Limit ON/OFF
If you do not need the limit values for your measuring task or only occasionally, you may deactivate them.
select ON/OFF
confirm input
The next screen appears:
continue with limit programming
terminate limit programming
If you have selected for »Exit«, you can press to go to the next main level aufrufen.
If you have selected für »Programming«, the next parameter appears. You can continue with programming
even if you have selected the "OFF" state; in this case, the settings are not activated in the later measuring
operation, but can be activated by selecting the "ON" state and then ending the programming as described
above.
3.4.2.
Flow-Limit Max.
Now enter the max. limit. If the flow rate exceeds this limit, the switch output MAX will be activated. Enter the
max limit keeping to the unit and resolution selected under chapter 3.1.2 and 3.1.3.
Example:
the volume flow must not exceed 2.854 litres per minute.
to chose the cursor position
to select 0 to 9 for the present cursor position
to enter
Enter with and continue with the hysteresis for the max. limit.
3.4.3.
Hysteresis for Limit MAX
If the volume or mass flow is unstable, the switch output may start to "scatter" when the flow rate approaches
the limit. To avoid this enter a hysteresis which is slightly higher than the percentual flow variation within the
max. limit range.
Example:
with flow variations of 3.5 % in the upper range, the hysteresis should be approx. 3.8 %.
to chose the cursor position
to select 0 to 9 for the present cursor position
to enter
Enter with , after that "Flow-Limit MIN" appears in the display.
