Panametrics DigitalFlow GS868, Programming Manual, Page: 30 / 146

Chapter 1. Programming Site Data
20 DigitalFlow™ GS868 Programming Manual (2-Channel)
2. At the
Static Density?
prompt, press [F1] = NO or [F2] = YES . If you press NO , the GS868 returns to the ADVAN
window.
3. Enter the
Fluid Density of the gas to be measured and press
[ENT] . (The meter will only accept values from
0.00001-100 lb/ft
3
.)
The GS868 program returns to the ADVAN window.
1.7.6.2 Entering Multiple K Factors
In the MULTK option, you can enter velocity or Reynolds Correction values into a K-Factor table. You can thus “curve
fit” velocity or Reynolds calibration multiple data points (from several different data sources or flow variables) to the
flow rate reported by the GS868.
1. Press [F2] to enter the
Multiple K Factors option.
2. Press [F1] = NO to disable or [F2] = YES to enable Multiple K-factors.
• If you press NO , the GS868 returns to the ADVAN window.
3. If you press YES , the program asks for the Custom type of data. Press [F1] to select velocity data, or [F2] to select
Reynolds data.
a.
If you select a Reynolds table, the meter asks for the
Kinematic Viscosity. Enter the appropriate value, and press
[ENT]
.
4. Press [F1] = NO to retain the current K-factor table and return to the ADVAN window, or press [F2] = YES to
Edit
The K-factor Table.
Note: If velocity vs. K-factor data was not provided with the Model GS868, the K-factor table can not be edited.
a.
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.
b. Enter the
Velocity (or Reynolds) Value for K-factor number “x”. Press
[ENT] . (The meter will only accept values
from –30,000 to +30,000 ft/sec.)
c. Enter the K-factor corresponding to velocity or Reynolds number “x”. Press [ENT] .
d. Repeat steps b and c until all of the data points have been entered.
Procedure Options
After completing the above steps, the meter returns to the SETUP 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.