Chapter 9. Diagnostics and Troubleshooting
204 Transport® Model PT878 Portable Liquid Flowmeter User’s Manual
9.1 Error Code Messages
Error Code messages appear on the screen while you are displaying
measurements. When logs appear in graph form, errors are indicated by a
vertical gray bar at the point of error. When they appear in a spreadsheet
format, errors are indicated by their number, in place of the measurement.
The Error Code messages are only general descriptions of the possible
problems. Use Table7 below to isolate and remedy the problem. If you are
unable to remedy the problem, contact the factory.
Note: We suggest that, in order to isolate the indicated problem more
easily, you obtain a test flowcell. Contact the factory for details.
Table 7: Error Messages
Error Problem Possible Cause Action
E0 No error. Displays briefly after dis-
play of another error
message
None required.
Measurement is valid.
E1 Low Signal - Poor
ultrasonic signal
strength.
Broken cable.
Flowcell problem.
Transducer problem.
Electronic failure.
Check transducer cable. See
Flowcell Problems on page208
and Transducer Problems on
page210. Check programming
and transducer spacing.
Contact the factory if problem
persists.
E2 Soundspeed Error
(Soundspeed is
programmed using
the Program Menu
Pipe option, as
described in
Chapter 5.)
Poor flow conditions.
Incorrect programming.
Bad transducer spacing.
Measurement is very
different from the
programmed
soundspeed.
Check soundspeed against
nominal soundspeed.
See Flowcell Problems on
page208 and Transducer
Problems on page210.
Check programming and
transducer spacing.