Error Codes 5-1
September 2004
Introduction The Model AT868 ultrasonic flowmeter is a reliable, easy to maintain
instrument. When properly installed and operated, as described in
Chapter 1, Installation, the meter provides accurate flow rate
measurements with minimal user intervention. However, if a problem
should arise with the electronics enclosure, the transducers or the
flowcell, a built-in error code message system greatly simplifies the
troubleshooting process.
All of the possible Model AT868 error code messages are discussed
in this chapter, along with the possible causes and the recommended
actions. When an error code is generated, it will appear on the LCD
screen.
If an error message appears on the display screen during operation of
the Model AT868, refer to the appropriate section of this chapter for
instructions on how to proceed.
E0: No Error Problem: No error condition currently exists.
Cause: This message appears briefly to confirm that the response
to another error message has corrected the problem.
Action: No action is required.
E1: Low Signal Problem: Poor ultrasonic signal strength or the signal exceeds the
limits entered via the User Program.
Cause: Poor signal strength may be caused by a defective cable,
a flowcell problem, a defective transducer or a problem
in the electronics console. A signal that exceeds the
programmed limits is probably caused by the entry of an
improper value in the SETUP-SIGNL submenu of the User
Program.
Action: Using the procedures in Chapter 6, Diagnostics, check
the components listed above. Also, check the value
entered into the SETUP-SIGNL submenu, as described on
page 2-13.
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