IM-P505-02-US Issue 1
74
UTM20 Series Ultrasonic Transit-time Flowmeters
11. Troubleshooting
Warning and alarm messages are classified according to NAMUR 107 standards
11.1 Out of Specification Messages
Warning and alarm messages occur when the flow meter is operational, but the readings might be
out of specification or an operator might need to take action If a warning or alarm condition occurs, a
warning/alarm icon with code will appear in the at the bottom of the Home Screen The flow rate and
flow total will continue to be displayed
11.2 Error Messages
An error condition occurs when the flow rate cannot be determined, such as when the signal strength
is too low If an error condition occurs, the flow rate will be replaced with the "failed" icon, code and
description
If conditions cause multiple messages to occur, all messages will be saved to the history, but some
messages may not be displayed If an error condition occurs, warning and alarm messages will not be
displayed If multiple errors occur, each error message will cycle through and be viewable for 5 seconds
Similarly, if multiple warning or alarm conditions occur (but no error conditions), each message will
cycle through and be viewable for 5 seconds
Warning, Alarm and Error Messages automatically clear when the issue clears
11.3 Check Function Codes
When the meter or outputs are in a test mode, a check function message appears at the bottom of
the Home Screen
11.4 View Alarm and Message Buffer
Up to 30 alarm or warning message codes are buffered on a first-in-first-out basis To view the buffer,
go to DIAGNOSTICS > HISTORY.
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