Error Messages - GE Transport PT878 Abridged Manual

August 2008

Error Messages

Error Problem
E0 No error
E1 Low Signal - Poor
ultrasonic signal strength
E2 Sound Speed Error
E3 Velocity Range - Velocity
exceeds programmed
limits
E4 Signal Quality
E5 Amplitude Error
E6 Cycle skip, Acceleration
E7 Analog Out Error
E8 Temperature Input
Supply
E9 Temperature Input Return
3-12
To indicate a possible problem during a measurement, Error
Messages may occasionally appear on the PT878 display. The
possible Error Messages, along with tips for isolating and correcting
the problem, are listed in Table 3-1 below.
Note: On a graphical display, errors are indicated by a vertical gray
bar at the point of the error. On a numeric display, errors are
indicated by an error code in place of the measurement.
Table 3-1: Error Code Messages
Possible Cause
•
Displays briefly after clearing
another error message
•
Broken cable
•
Flowcell problem
•
Transducer problem
•
Electronic failure
•
Poor flow conditions
•
Incorrect programming
•
Bad transducer spacing
•
Measurement is very different
from the programmed sound
speed
•
Programming error
•
Poor flow conditions
•
Bad transducer spacing
•
If too high - electronic failure
•
If too low - flowcell, electrical
problem
•
Excessive particles or bubbles
in fluid
•
High second phase percentage
•
Poor flow conditions
•
Bad transducer spacing
•
Under current output
•
Supply temperature input out of
range
•
Return temperature input out of
range
Action
None required - measurement is
valid.
•
Check transducer cable
•
Check programming and
transducer spacing
•
Contact the factory if problem
persists.
•
Check sound speed against
nominal sound speed
•
Check programming and
transducer spacing
•
Make sure flow rate is within
±12 m/s (±40 ft/s)
•
Check programming and
transducer spacing
•
Check for source of electrical
interference
•
Check electronics with a test
flowcell
•
If unit still fails to operate,
contact the factory
•
Check for flowcell problems
•
Check transducer spacing as
programmed and as set on pipe
•
Check that output load is <550
ohm
•
Check cable and transmitter
•
Check cable and transmitter
Operation