Diagnostics
3-1
March 2008
Introduction
This chapter explains how to troubleshoot the Model DF868 if
problems arise with the electronics console, the flowcell, or the
transducers. Indications of a possible problem include:
•
display of an error message on the active display screen
•
erratic flow readings
•
readings of doubtful accuracy (i.e., readings that are not consistent
with readings from another flow measuring device connected to
the same process).
If any of the above conditions occurs, proceed with the instructions
presented in this chapter.
Displaying Diagnostic
Parameters
The Model DF868 has a built-in
Diagnostics Menu
to aid in the
troubleshooting of flowcell, transducer and/or electrical problems.
The
Diagnostics Menu
may only be entered from the
Big
or
Dual
measurement mode display. See Chapter 2,
Displaying Data,
in the
Programming Manual
for instructions on setting the display screen to
the desired format, and enter the
Diagnostics Menu
as shown below.
Note:
For a 1-Channel Model DF868, the above prompt does not
appear, and the following prompt is the initial screen.
Note:
Ch1 (or Ch2), which is shown in parentheses above, appears
in the locator bar only with a 2-Channel Model DF868.
(Ch1) label gSITE
‰
Press the
[
←]
or [
→]
keys until
the desired channel option
appears on the option bar. Press
the appropriate
[Fx]
key to select
this option.
Velocity Ft/s
6.95
(error codes appear here)
CH1
CH2
SUM
DIF
(Ch1) label gSITE
‰
Press the
[
←]
or [
→]
keys until
DIAG
appears on the option bar.
Press the appropriate
[Fx]
key to
select this option.
Velocity Ft/s
6.95
(error codes appear here)
TIME
DIAG
Содержание DigitalFlow DF968
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Страница 7: ...Chapter 1 ...
Страница 23: ...Chapter 2 ...
Страница 32: ...Chapter 3 ...
Страница 42: ...Chapter 4 ...
Страница 55: ...Appendix A ...
Страница 56: ...Service Record Introduction A 1 Data Entry A 1 ...
Страница 58: ...March 2008 A 2 Service Record Table A 1 Service Record Continued Date Description of Service Performed By ...
Страница 60: ...Appendix B ...
Страница 72: ...March 2008 Optional Enclosures B 11 Figure B 2 Model DF868 Rack Mount Console Assembly ref dwg 705 849 ...