Vega POINTRAC 31 Operating Instructions Manual page 28

6 Set up with the indicating and adjustment module
Setup/Current output
mode
Setup/Relay
Lock setup/adjustment
28
Hence a percentage value of 90 % for the Delta I value is
recommended.
You select lower values for the sensitive detection of material cones or
buildup which only cause a partial absorption of the radiation.
In this menu item you can select the switching condition of the sensor.
You can choose between an 8 - 16 mA characteristics or a 16 - 8 mA
characteristics.
In this menu item you can also determine the switching condition in
case of failure. You can select if the current output should output 22 mA
or < 3.6 mA in case of failure.
In this menu item you can select in which mode the sensor should
work.
You can choose between overfill and dry run protection.
The relay outputs of the sensor react accordingly.
Overfill protection = the relay will deenergise (safe condition) when the
max. level is reached.
Dry run protection = the relay will deenergise (safe condition) when the
min. level is reached.
Make sure that you have selected the correct characteristics. See
menu item "Setup/Current output mode".
With this menu item you protect the sensor parameters against
unauthorize or unintentional modifications.
This menu item is described in the operating instructions manual
"Indicating and adjustment module".
POINTRAC 31 • 8/16 mA/HART - four-wire