GE DigitalFlow GC868, Руководство по обслуживанию

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Error Codes and Screen Messages 2-3
April 2008
E4: Signal Quality
Problem:
The signal quality is outside the limits programmed in the
SETUP
submenu of the User Program .
Cause:
Too high a signal strength may be caused by the failure of
an electronic component. Too low a signal strength may
be caused by a flowcell or electrical problem. Another
cause may be a poor signal-to-noise ratio for the measure
mode cycle count technique.
Action:
Check for sources of electrical interference and verify the
integrity of the electronics console by temporarily
substituting a test flowcell that is known to be good.
Check the transducers and relocate them, if necessary.
See Chapter 3,
Diagnostics , for instructions.
E5: Amplitude Error
Problem:
The signal amplitude exceeds the limits programmed in
the
SETUP
submenu of the User Program .
Cause:
Excessive levels of an attenuating gas, such as CO
2
, are
present in the pipe. Solid or liquid particulates may be
present in the pipe. The problem could also be caused by
excessive turbulence levels or rapid pressure variations.
Action:
Refer to Chapter 3, Diagnostics , to correct any flowcell
problems.
E6: Cycle Skip, Accel.
Problem:
The acceleration exceeds the limits programmed in the
SETUP
submenu of the User Program .
Cause:
This condition is usually caused by poor flow conditions
or improper transducer spacing.
Action:
Refer to Chapter 3, Diagnostics , to correct any flowcell
and/or transducer problems.
E7: Analog Out Error
Problem:
The current in the analog output circuit exceeds the limits
for the analog output port.
Cause:
The output load exceeds the specified limits for the
analog output port.
Action:
Make sure the output load is <550 ohms for the
Slot 0
analog outputs or is <1000 ohms for an analog outputs
option card (slots 1-6).
E8: Temp In
Problem:
This message indicates a temperature input error.
Cause:
The temperature exceeds the specified limits for the
analog inputs option card.
Action:
Check the temperature transmitter and the connecting
cable. Refer to Chapter 1,
Calibration , and recalibrate the
analog inputs on the option card.