User guide

42
6Setupwiththedisplayandadjustmentmodule
MINITRAC 31 • Foundation Fieldbus
41782-EN-131119
The implementation of a real value corretion is only necessary if the
requirementsofthemeasurementloophavechanged,forexample
withabrasioninatube.
Ifyouknowthedensityofacertainmedium,youcanenterthedeter-
mined real density in this menu item to correct the measured value.
Thefunctionshiftsthelinearizationcurvetothisdeterminedpoint.
The measurement can thus be adapted exactly to the conditions in
the tube.
In this menu item you can activate the relay output and determine its
functionaswellastheswitchingpoints.
When the output of the process values is set, you can choose be-
tweenoverllanddryrunprotection.
The relay outputs of the sensor react accordingly.
Thefollowingreferencevaluescanbeselected:
•
None - Relay operates as fail safe relay
•
Electronics temperature
•
Process value
"No" reference value means that the relay output operates as fail safe
relay.
Push the [->] button, to reach the relay settings.
Example for the adjustment of the process value
Firstofallselecttherequestedmode(overllordryrunprotection).
Caution:
Independentoftheselectedreferencevalue,therelaywilldeenergize
in case of failure.
With this menu item you safeguard the sensor parameters against
unauthorizedorunintentionalmodications.
This menu item is described in the operating instructions manual
"Display and adjustment module".
Setup - Real value correc-
tion (manually)
Setup - Relay
Lock setup - adjustment