Measurement Quality Status - Emerson Rosemount 3051S Manual

Troubleshooting
March 2024
5.4.8 Differential Pressure (DP) calculation is negative
Recommended action
If the Analog Output (AO) is saturated low, verify that DP Variable is a possible value.
If the DP Variable is negative, P
5.5

Measurement quality status

The ERS System is compliant with the HART
One of the most noticeable enhancements available with the HART Revision 6 standard is
that each variable has a measurement quality status. These statuses can be viewed in AMS
Device Manager, with a communication device, or with any HART Revision 6 compatible
host system.
Figure 5-1: Measurement Quality Status
A. Quality Status on Differential Pressure (DP) measurement status
Possible measurement quality statuses
• Good: Displayed during normal device operation.
• Poor: Indicates the accuracy of the measured variable has been compromised. For
example, the P
Pressure measurement.
• Bad: Indicates the variable has failed. For example, the P
78
2. Replace LCD display.
Module Temperature has failed and is no longer compensating the P
HI
and P may be reversed.
HI LO
Revision 6 Standard.
®
Reference Manual
00809-0100-4804
Pressure sensor has failed.
HI
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