2.1.5 Validity alarm
This alarm indicates that the meter may not be measuring accurately. Click Check Status
to see a description of which validity alarms are active. The validity alarms QMeter and
QFlow indicate an issue with the meter collecting enough information from the chords to
make an accurate measurement. The validity alarms for pressure and temperature indicate
that the value is above or below the alarm limits for these values. Red and green are the
only colors used for this alarm.
2.1.6 Comms alarm
The Comms alarm indicates that communications between Daniel MeterLink and the
meter failed. This could be due to a poor communication link. Daniel MeterLink continues
to retry communications. Red and green are the only colors used for this alarm.
2.1.7 Communications
The Communications Analyzer (via Daniel MeterLink Tools> Menu>Communications
Analyzer menu path) displays communications between Daniel MeterLink and the
ultrasonic meter. This utility is useful for troubleshooting communications to the meter. It
displays many of the TCP/IP commands between Daniel MeterLink and the connected
meter.
For troubleshooting communications with the 475 Field Communicator for the HART
®
Protocol, refer to Section 5 of the Emerson 475 Field Communicator User’s Manual, Rev D.
This manual may be downloaded from the following location:
https://www.emerson.com/documents/automation/user-s-manual-en-104978.pdf
For troubleshooting communications with AMS Device Manager, refer to the help
documentation and support at the following web site:
https://www.emerson.com/en-us/catalog/asset-reliability/ams-ams-device-manager
2.2
Troubleshooting the meter
Table 2-1 and the following sections show errors that may occur with the meter hardware,
firmware or connections and recommended actions to resolve the problem(s).
Troubleshooting
14 Gas Ultrasonic Flow Meters
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