GE DigitalFlo XGM868i, Руководство по обслуживанию, Страница: 22 / 80

Chapter 2. Error Codes
14 DigitalFlow™ XGM868i Service Manual
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 Keypad 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
Channelx-Set up-Signal
submenu of the Keypad Program .
Action:
Using the procedures in Chapter 3, Diagnostics , check the components listed above. Also, check the limit
values entered into the
Channelx-Set up-Signal
submenu, as described in Chapter 1, Programming Site
Data , of the Programming Manual .
E2: Sound Speed Error
Problem: The sound speed exceeds the limits programmed in the
Channelx-Set up-Signal
submenu of the Keypad
Program .
Cause:
The error may be caused by incorrect programming, poor flow conditions or poor transducer orientation.
Action:
Compare the measured sound speed to tabulated nominal values for the gas being used and correct any
programming errors. Refer to Chapter 3,
Diagnostics , to correct any flowcell and/or transducer problems.
E3: Velocity Range
Problem:
The velocity exceeds the limits programmed in the Channelx-Set up-Signal submenu of the Keypad
Program .
Cause:
This error may be caused by the entry of improper programming data or by poor flow conditions and/or
excessive turbulence.
Action:
Make sure the actual flow rate is within ±75 ft/sec (±23 m/sec). See Chapter 1, Programming Site Data , in
the Programming Manual for details. Refer to Chapter 3, Diagnostics , to correct any flowcell and/or
transducer problems.