To Next Page

To Previous Page

AT600 User’s Manual 73

Chapter 4. Error Codes and Troubleshooting

4.1 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.

4.1.1 Error Header

4.1.2 Flow Error String

Flow errors are errors in the course of making 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 with the fluid itself. Flow errors are typically not caused by a malfunction of the

flow measurement device, but by an issue with the fluid itself.

4.1.2a E1: Low Signal

Problem: Poor ultrasonic signal strength or the signal exceeds the limit via the Program;

Cause: When SNR is less that the value of “Signal Low Limits” or the signal cannot be found when the flow is

started, the Low Signal error will occur. Poor signal strength may be caused by a defective cable, a flowcell

problem, a defective transducer or a problem in electronic console. A signal that exceeds the programmed

limits is probably caused by the entry of an improper value in the menu Program  Advanced  Error

Limits



Signal Low limits.

Action: Check the components listed above (Refer to Diagnostics). Also check the inputted value in the menu

Program  Advanced  Error Limits



Signal Low limits.

4.1.2b E2: Sound Speed Error

Problem: The sound speed exceeds the limits programmed in the menu: Program  Advanced  Error Limits



SNSD +- limits.

Cause: When the measured sound speed is out of the limit of sound speed, it will cause this error. The error may be

caused by incorrect programming, poor flow conditions and poor transducer orientation;

Action: Correct the programming errors. Refer to Diagnostics, to correct the flowcell and/or transducer problems.

Also check the inputted value in the menu Program  Advanced  Error Limits



SNSD +- limits.

Error Pattern Error Header

Flow Error En (n is error number)

Device Error Dn (n is error number)

Warning Sn (n is error number)

GE AT600 User Manual

Questions and Answers: