AquaTrans™ AT600 User’s Manual 89
Chapter 5. Error Codes and Troubleshooting
Chapter 5. Error Codes and Troubleshooting
5.1 Error Display in the User Interface
The bottom line of the LCD displays a single, top priority error message during operation. This line, called the
Error Line, includes two parts: Error header and Error String. The Error header indicates the error pattern and
error number, while the Error string gives a detailed description of the error information.
5.1.1 Error Header
5.1.2 Flow Error String
Flow errors are errors that occur during a flow measurement. These errors can be caused by disturbances in
the fluid, such as excessive particles in the flow stream or extreme temperature gradients. The errors could
also be caused by an empty pipe or other such issue. Flow errors are typically not caused by a malfunction of
the flow measurement device, but by a problem with the fluid itself or with the process piping.
Error Pattern Error Header
Flow Error En (n is error number)
Device Error Dn (n is error number)
Warning Sn (n is error number)
Option Bar Description Good Bad
Tup Displays the upstream ultrasonic signal transit time. NA NA
Tdn Displays the downstream ultrasonic signal transit time. NA NA
DeltaT Displays the transit time difference between the upstream and
downstream signals.
NA NA
Up Signal
Quality
Displays the signal quality for the upstream transducer ≥1200 <400
Dn Signal
Quality
Displays the signal quality for the downstream transducer ≥1200 <400
Up Amp Disc Displays the value for the signal amplitude of the upstream
transducer.
24±5
<19 or >29
Dn Amp Disc Displays the value for the signal amplitude of the downstream
transducer.
24±5
<19 or >29
SNR Up Display the value for the signal-to-noise of the upstream signal ≥4 <4
SNR Dn Display the value for the signal-to-noise of the downstream signal ≥4 <4
Gain Up Display the value for the gain of the upstream transducer 9-85 <9 or >85
Gain Dn Display the value for the gain of the downstream transducer 9-85 <9 or >85
Up Peak Displays the first value in the upstream correlation signal, which is
more than the positive threshold or is less than the negative
threshold.
NA NA
Dn Peak Displays the first value in the downstream correlation signal, which is
more than the positive threshold or is less than the negative
threshold.
NA NA
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