
Chapter 3. Operation
64
Sentinel™ User’s Manual
3.2.2 Function Verification Procedures
Before continuing with function verification, the flowmeter body must be installed in the pipeline and pressurized with
process gas. Also, the Sentinel's communications and outputs must be wired to the flow computer or plant
computer. Temperature and pressure sensors should be connected to either the Sentinel or the flow computer. The
Sentinel
must be powered for at least one minute to allow for self-test and initialization, as follows:
1.
Verify that the on-site control computer is not indicating fault condition from the Sentinel if the alarm output is
connected.
2.
If the alarm output is not connected, verify that the Sentinel is not reporting any errors by observing its display
and fault indicator (red) light beneath the display.
3.
Verify that the flow reading reported by the on-site control computer is reasonable and stable.
If none of the above procedures indicate a problem, the function verification is complete. If a problem is indicated,
proceed to
“Installation Troubleshooting Procedures”
below.
3.2.3 Installation Troubleshooting Procedures
The purpose of these procedures is to troubleshoot the Sentinel installation, if a fault condition was indicated while
performing the “
Function Verification Procedures”
in the previous section.
If the Sentinel failed to power on, check the wiring for the presence of power in a safe manner. If the power is wired
correctly and power is present, call Panametrics for assistance.
If the Sentinel is indicating a fault condition on the display or alarm output, refer to
Error Codes
, Chapter 4, or
Diagnostics
, Chapter 5 in this manual.
If the on-site control computer is not receiving flow data and the Sentinel display is not indicating a fault, check the
wiring of the outputs from the Sentinel to the on-site control computer or the flow computer, if used.
Check the programming of the flow computer, if used, and verify that its input and output wiring is correct. If you
cannot resolve the problem, call Panametrics for assistance.
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