Configure Measurement Validation; Common Configurations For High Density Applications - Emerson Rosemount 848T FOUNDATION Reference Manual

Section 3: Configuration
November 2014
3.2.8

Configure measurement validation

Use the following steps to configure measurement validation:
1.
2.
3.
4.
5.
Note
The decreasing limit selected is required to be a negative value.
6.
7.
8.
3.3 Common configurations for high density
applications
For the application to work properly, configure the links between the function blocks and
schedule the order of their execution. The Graphical User Interface (GUI) provided by the
F
OUNDATION
The measurement strategies shown in this section represent some of the common types of
configurations available in the 848T. Although the appearance of the GUI screens will vary from
host to host, the configuration logic is the same.
Note
Ensure the host system or configuration tool is properly configured before downloading the
transmitter configuration. If configured improperly, the F
configuration tool could overwrite the default transmitter configuration.
22
Set mode to Disabled for specific sensor.
Select sample rate. 1-10 sec/sample is available. 1 second/sample is preferred for
sensor degradation. The higher the number of seconds between samples, the more
emphasis put on process variation.
Select Deviation Limit from 0 to 10 units. If deviation limit is exceeded, a status event
will be triggered.
Select Increasing Limit. Sets the limit for increasing rate of change. If limit is exceeded, a
status event will be triggered.
Select Decreasing Limit. Sets the limit for decreasing rate of change. If limit is exceeded,
a status event will be triggered.
Set the Deadband from 0 to 90%. This threshold is used to clear the PV status.
Set Status Priority. This determines what happens when the specific limit has been
exceeded. No Alert - Ignores limit settings. Advisory - Sets Advisory Plant Web Alert,
but does not do anything with PV status. Warning - Sets a Maintenance Plant Web Alert
and sets PV status to uncertain. Failure - Sets A Failure Plant Web Alert and sets PV
status to Bad.
Set mode to Enabled for specific sensor.
fieldbus host or configuration tool will allow easy configuration.
Reference Manual
00809-0100-4697, Rev GA
fieldbus host or
OUNDATION
Configuration