Baker Hughes DigitalFlow XGF868i, Programming Manual

Page: 22 / 100

1.9 Entering global data
The global menu is used to enter information that is not
specific to either of the individual channels. Information
programmed via this menu is used to compute parameters
such as the sum, difference or average of the channel 1
and channel 2 signals (for a 2-channel meter). In addition,
several general system parameters may be entered in the
global menu.
IMPORTANT
When calculating the sum, difference or average
readouts, data from the global-system submenu is used.
Any conflicting data entered in the channelx-system
submenu is overridden.
The following submenus are included in the global menu:
•
Systm - use to specify the units of measure used in
calculations (see Entering global system data on
page 12 ).
• I/O - used to set up error handling and to configure
analog inputs and outputs (see Selecting error handling
on page 13 ).
• Comm - used to set up the serial communications
port (see Configuring the communications port on
page 18 ).
Based on the selection made above, proceed to the
appropriate section of this chapter for instructions. While
following the programming instructions, refer to Figure 30
on page 42 . Remember to record all programmed data in
Appendix B. Data records on page 45 .
1.9.1 Entering global system data
This menu enables you to select the system units that
the XGF868i will use when channel data is added,
subtracted or averaged together.
1. In the
keypad program , scroll to prog and
press [enter].
2. In the prog menu, scroll to GLOBL and
press [enter].
3. In the global program menu, scroll to systm and
press [enter].
4. At the system units prompt, scroll to Eng to display
measurements in English units or to metrc for
metric units and press [enter].
5. Scroll to the desired pressure units (absolute
or gauge) and press [enter].
6. Do one of the following:
• If absolute was selected, proceed immediately
to step 7.
• If gauge was selected, enter the desired
atmospheric pressure , press [enter] and proceed
to the next step.
1.9.1a Selecting volumetric units
1. Scroll to the desired volumetric units for the flow rate
display and press [enter]. Available units are listed in
Table 5 below.
Table 5: Available volumetric/totalizer units
English metric
ACF = Actual cubic feet ACM = Actual cubic meters
KACF = Thousands of ACF KACM = Thousands of ACM
MMACF = Millions of ACF MMACM = Millions of ACM
SCF = Standard cubic feet SCM = Standard cubic meters
KSCF = Thousands of SCF KSCM = Thousands of SCM
MMSCF = Millions of SCF MMSCM = Millions of SCM
2. Scroll to the desired time units for the flow rate display
and press [enter].
3. Scroll to the desired number of vol decimal digits
(digits to the right of the decimal point in the volumetric
flow rate display) and press [enter].
1.9.1b Selecting totalizer units
1. Scroll to the desired totalizer units for the totalized flow
rate display and press [enter]. Available units are listed in
Table 5 on page 12 .
2. Scroll to the desired number of tot decimal digits
(digits to the right of the decimal point in the totalized
flow rate display) and press [enter].
3. Do one of the following:
• If mass flow is on , proceed to selecting the mass flow
units below.
• If mass flow is off , the meter returns to the channel
program window. Go to procedure options on the
following page.
NOTE: To activate mass flow, refer to Activating mass flow on
page 11 . The following prompts will only appear if mass
flow is activated for both channels.
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