GE DigitalFlow DF868 Programming Manual page 43

Active Tw Measurement
Procedure Options
Programming Site Data
Use this option to actively compensate the transit-time measurement
in the fluid for widely varying transducer signal delays that result
from large temperature deviations.
IMPORTANT:
Consult the factory before activating this option.
ADVAN
1. At the window, press [→] and
TW Measurement.
[F1] = NO
2. Press to disable this option, or
TW Measurement. If you select NO, the DF868 returns to the
Advanced Features prompt.
3. If you enable active Tw measurement, the meter requires the
Minimum Tw in µsec. (The range is from 0 to 500 µsec.) Use the
numeric keys to enter the value, and press
4. The meter also requires the Maximum Tw in µsec. (The range is
from 0 to 500 µsec.) Use the numeric keys to enter the value, and
[ENT].
press
After completing the above steps, the meter returns to the
Features [EXIT]
prompt. Press
prompt.
•
To continue programming the meter, refer to the menu maps in
Appendix A and navigate to the desired menu. Then, proceed to
the appropriate section of this manual for instructions.
•
To leave the User Program and retain the previous settings, press
[EXIT]
twice and then press
programming changes will be discarded and you will be returned
to the data display.
•
To leave the User Program and return to measurement mode, press
[EXIT]
twice and then press
programming changes will be entered into the meter's memory,
and you will be returned to the data display.
[F1] (ActTw)
to select Active
[F2] = YES
to enable Active
[ENT].
Channel PROGRAM
to return to the
[F1] = NO SAVE
at the prompt. Any
[F2] = YES SAVE
at the prompt. Your
March 2008
Advanced
1-35