Baker Hughes DigitalFlow XGF868i, Programming Manual

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1.8.4 Using advanced features
This option enables you to access the more advanced
features of the meter. In this option you can do the following:
•
Enter a table of K factors - to compensate for non-linear
flow rates (see below).
• Enable mass flow - calculated for static fluid density
(see the next page).
1.8.4a Entering K factors
Use this option to enter a table of K factors. K factors are
used to create a curve for the flow range (based on velocity)
that compensates for non-linear flow rates. The meter
accepts from 2 to 20 data pairs. Complete the following
steps to enter multiple K factors for velocity values:
NOTE: The K factors are supplied by the factory. Without
them the K factor table cannot be edited.
1. In the
keypad program , scroll to prog and press [enter].
2. In the prog menu, scroll to CH1 or CH2 and press [enter].
3. In the channel program menu, scroll to setup and
press [enter].
4. Scroll to advan . Press [enter].
5. Scroll to multk , and press [enter].
6. Scroll to yes to activate, or to no to deactivate multiple
K factors, and press [enter].
NOTE: If you selected No, go to procedure options below.
7. Scroll to the custom type of K factor desired: CstV
(velocity) or CstR (Reynolds). Press [enter].
8. Scroll to yes to edit table , or to no to retain the current
values, and press [enter].
NOTE: If you scroll to No, go to procedure options on the
next page.
1.8.4b Editing K factors
1. Use the arrow keys to enter the number of K factors
(2 to 20) in the table and press [enter].
2. Enter the velocity (or Reynolds) value for K factor
number “X” and press [enter].
NOTE: When editing the K factor table, the velocities
must be entered in increasing order.
3. Enter the K factor corresponding to velocity number
“X” (0.333 to 3.0) and press [enter].
4. Repeat steps 2 and 3 for each pair of values.
Procedure options
After completing the previous steps, the XGF868i returns to
the advanced features window. Do one of the following:
• To continue programming, refer to
Appendix A. Menu
Maps on page 39 , to navigate to the desired menu.
• To leave the keypad program , press [escape] five times.
1.8.4c Activating mass flow
Use this option to calculate mass flow from a static
fluid density. Complete the following steps to enter the
static density of the fluid:
IMPORTANT
The XGF868i can use a static density from either a
single value of density (Rho), or from the live or fixed
temperature and pressure inputs, as programmed
in the I/O menu, along with a single entered value of
molecular weight (MW). This is done by setting the mass
flow calculation prompt to yes and following the prompts
below to calculate mass flow.
1. In the keypad program , scroll to prog and
press [enter].
2. In the prog menu, scroll to CH1 or CH2 and
press [enter].
3. In the channel program menu, scroll to setup and
press [enter].
4. Scroll to advan . Press [enter].
5. Scroll to mass , and press [enter].
6. Scroll to yes to activate, or to no to deactivate
static density , and press [enter].
NOTE: If you scroll to no, go to procedure options below.
7. Scroll to the density type (molecular weight (Mw))
and press [enter].
8. Do one of the following:
• If you selected Rho - proceed to step 9.
• If you selected Mw - proceed to step 11.
9. Scroll to the type of volumetric units (standard - StVOL
or actual-AcVOL) for the measurement data display
and press [enter].
10. Enter the fluid density (0.00001 to 0.100 lb/ft
3
or
0.00001 to 123.18 kg/m
3
) and press [enter]. Go to
procedure options below.
11. Enter the molecular weight and press [enter].
Procedure options
After completing the steps on the previous page, the
XGF868i returns to the advanced features window. Do
one of the following:
• To continue programming, refer to
Appendix A. Menu
Maps on page 39 , to navigate to the desired menu.
• To leave the keypad program , press [escape]
five times.
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