VEGA MINITRAC 31 Foundation Fieldbus - Manual (Page 42)

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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 overfill 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 (overfill 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 modifications.
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