Rosemount 3051SFC_A User Manual

Reference Manual
00809-0100-4809, Rev DA
Section 5: Troubleshooting
September 2015
83
Troubleshooting
Section 5 Troubleshooting
Basic troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 83
Return of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 85
5.1 Basic troubleshooting
If a malfunction is suspected despite the absence of a diagnostic message on the communicator
display, follow the procedures described below to verify that the flowmeter hardware and
process connections are in good working order. Always approach the most likely and
easiest-to-check conditions first.
Table 5-1. Troubleshooting Guide
Symptom Possible cause Corrective action
Low Reading
Annubar sensor not fully
installed (not spanning the
inner diameter of the pipe)
•Verify the actual pipe ID and wall dimensions and compare to the
Calculation Data Sheet.
•Consult Factory if dimensions do not match.
•During re-installation mark tip of Annubar
®
sensor, install, remove
and inspect marking to insure contact with opposite side of the
pipe.
Annubar sensor not aligned
properly in flow profile
•Refer to the installation instructions in Section 2: Installation of this
manual for proper alignment straight across pipe I.D., with
upstream sensing holes facing straight upstream in flow profile.
Annubar sensor not installed
in proper pipe size
•Verify the actual pipe ID and wall dimensions and compare to the
Calculation Data Sheet.
•Consult Factory if dimensions do not match.
Annubar sensor installed too
close to an upstream flow
disturbance, such as a pipe
elbow.
•Compare installation to recommended straight pipe run
referenced in the installation instructions in Section 2: Installation
of this manual.
DP Transmitter not zeroed
properly, or not configured
correctly
•Verify DP sensor has been zeroed properly.
•Verify transmitter range is correct, and if square root output is
correct.
•Verify Annubar sensor calc sheet represents fluid density properly
so that transmitter is configured correctly for the application.
High Reading
Annubar sensor not installed
in proper pipe size
•Verify the actual pipe ID and wall dimensions and compare to the
Calculation Data Sheet.
•Consult Factory if dimensions do not match.
DP transmitter not zeroed
properly or not configured
properly
•Verify DP sensor has been zeroed properly.
•Verify transmitter range is correct, and if square root output is
correct.
•Verify Annubar sensor calc sheet represents fluid density properly
so that transmitter is configured correctly for the application.

Rosemount 3051SFC_A Specifications

General

Brand	Rosemount
Model	3051SFC_A
Category	Measuring Instruments
Language	English