112
Reference Manual
00809-0100-4803, Rev GA
Troubleshooting
September 2017
Troubleshooting
5.3
Measurement quality and limit status
The Rosemount 3051SMV is compliant with the HART Revision 6 Standard. One of the most noticeable
enhancements available with the HART 6 standard is that each variable has a measurement quality and
limit status. These statuses can be viewed in AMS Device Manager, on a Field Communicator, or with any
HART 6 compatible host system. In AMS Device Manager, variable statuses can be viewed by selecting
Variables
in the upper left menu tree under the
Configure/Setup
heading.
Figure 5-1. Quality and Limit Status
A. Measurement quality and limit status
Each variable status reading consists of two parts separated by a hyphen; Measurement Quality and Limit
Status.
Possible measurement quality readings
Good
– Displayed during normal device operation.
Poor Accuracy
– Indicates the accuracy of the variable measurement has been compromised.
Example: The module temperature sensor failed and is no longer compensating the differential pressure
and status pressure measurements.
Bad
– Indicates the variable has failed. Example: A differential pressure, static pressure, or process
temperature sensor failure.
Possible limit status readings
Not Limited
– Displayed during normal device operation.
High Limited
– Indicates the current variable reading has gone above the transmitter’s maximum possible
reading and is no longer representative of the actual variable measurement.
Low Limited
– Indicates the current variable reading has gone below the transmitter’s minimum possible
reading and is no longer representative of the actual variable measurement.
Constant
– Indicates the variable reading is set to a fixed value. Example: The totalizer has been stopped.
A
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