DigitalFlow™ GF868 Programming Manual (2-Channel)
21
Chapter 1. Programming Site Data
Editing K Factors
1.
Press
[F2] = MULTK
to enter the MultiK option.
2.
Press
[F1] = NO
to disable or
[F2] = YES
to enable
Multiple K-factors
.
•
If you press
NO
, the GF868 returns to the
Advanced Features
prompt.
•
If you press
YES,
complete the steps below.
a.
The GF868 asks for the type of K factor. Press
[F1]
to select
CstV (
Custom velocity) or
[F2]
to select
CstR
(Custom Reynolds number).
•
If you enable
CstR
, you must also enter the
Kinematic Viscosity
of your gas, as listed in
Sound Speeds and Pipe
Size Data.
Use the numeric keys to enter a value, and press
[ENT].
b.
Press
[F1]
= NO
to retain the current K-factor table and return to the
Advanced Features
prompt, or press
[F2]
=
YES
to
Edit The K-factor Table.
Note:
If velocity vs. K-factor data was not provided with the Model GF868, the K-factor table can not be edited.
c.
Enter the
Number of K-factors
to be entered into the table. Press
[ENT]
. (The meter will only accept values from
2 to 20.)
IMPORTANT:
When editing the K-factor table, the velocities must be entered in increasing order.
d.
Enter the
Velocity Value
for K-factor number “x”. Press
[ENT]
. (The meter will only accept values from –30,000
to +30,000 ft/sec.)
e.
Enter the
K-factor
corresponding to velocity number “x”. Press
[ENT]
.
3.
Repeat steps c and d until all of the data points have been entered.
1.6.5e Procedure Options
After completing the above steps, the meter returns to the
ADVANCED FEATURES
prompt. Continue as follows:
•
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
[F1] = NO
at the
SAVE
prompt. Any 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
[F2] = YES
at the
SAVE
prompt. Your programming changes will be entered into the meter’s memory, and you will be returned to
the data display.
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