
13
Reference Manual
00809-0100-4803, Rev DA
Section 5: Troubleshooting
April 2013
Troubleshooting
5.3 Measurement quality and limit status
The 3051S MultiVariable Transmitter 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, on a 475, or with
any HART 6 compatible host system. In AMS, 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
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.
Measurement Quality and Limit Status
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