VEGA FIBERTRAC 31 4 … 20 mA_HART - four-wire With SIL qualification - Manual (Page 54)

54
7 Set up with the display and adjustment module
FIBERTRAC 31 • 4 … 20 mA/HART - four-wire
43386-EN-131119
The change between the two statuses is sufficiently clear.
Hence a percentage value of 90 % for the Delta I value is recom-
mended.
You select lower values for sensitive detection of material cones or
buildup which cause only partial absorption of the radiation.
This menu item appears only if you have selected under adjustment
mode (setup/adjustment mode) the "Two-point adjustment".
In this menu item you can set the min. pulse rate (ct/s) at which the
sensor should switch over.
Fill the vessel until the FIBERTRAC 31 is covered.
You thus get the min. pulse rate (ct/s) for the "covered" adjustment.
Enter the requested pulse rate manually or let the rate be determined
by FIBERTRAC 31. Automatic determination of the pulse rate should
be given preference.
You can enter the adjustment point (ct/s) manually.
You can let the adjustment point be determined by FIBERTRAC 31.
This menu item appears only if you have selected under adjustment
mode (setup/adjustment mode) the "Two-point adjustment".
In this menu item you can set the max. pulse rate (ct/s) at which the
sensor should switch over.
Empty the vessel until the FIBERTRAC 31 is uncovered.
You thus get the max. pulse rate (ct/s) for the "uncovered" adjustment.
Enter the requested pulse rate manually or let the rate be determined
by FIBERTRAC 31. Automatic determination of the pulse rate should
be given preference.
Adjustment "covered"
(two-point adjustment)
Adjustment "uncovered"
(two-point adjustment)