Appendix C. Programming the XGS868i Using PanaView™
102
DigitalFlow™ XGS868i Programming Manual
C.5.4 Entering Input/Output Parameters
Enter the zero cutoff value and set up the temperature, pressure and quality inputs via the
Input/Output
submenu. While
programming these parameters, refer to Figure 52 on page 139 of Appendix D,
PanaView Menu Maps
.
IMPORTANT:
If an option card in
Slot 1
fails to appear in this menu, it may be turned
OFF
. See the
Global-I/O-Options
section on page 113 for setup instructions.
C.5.4a Zero Cutoff Value
Near a zero flow rate, the Model XGS868i’s readings may fluctuate due to small offsets caused by thermal drift or
similar factors. To force a zero display reading when there is minimal flow, enter a
zero cutoff value
as described in the
following steps:
1.
From the
Channel
menu, highlight and double-click on the
Input/Output
option in the center pane.
2.
The program asks for the
Zero Cutoff.
Enter a value from 0 to 1 ft/sec (0 to 0.30 m/sec) for the zero cutoff and click
[Next Item]
.
The recommended setting is 0.1 ft/sec (0.03 m/sec).
C.5.4b Assume Saturation
This prompt permits you to use a single input for either temperature or pressure to measure mass flow. The
User
Program
contains a table that correlates pressure and temperature for saturated steam. If the meter can assume the
steam is always at or near saturation, then only a temperature or pressure input is needed. The meter will interpolate the
corresponding pressure or temperature.
1.
At the
Assume Saturation?
prompt, scroll to
No
or
Yes
and click [
Next Item]
.
•
If you selected
Yes
, proceed to Step 2 below.
•
If you selected
No
, proceed to Step 1 on the next page.
C.5.4c Steam Input Type
2.
Scroll to the
Steam Input Type
that will be used to measure mass flow and click [
Next Item]
.
•
If you selected
Temperature
, proceed to
Temperature Input
•
If you selected
Pressure
, proceed to
Base Temperature
Note:
GE Measurement & Control recommends using a live input for either temperature or pressure when assuming
the saturation.
Summary of Contents for DigitalFlow XGS868i
Page 2: ......
Page 4: ... no content intended for this page ...
Page 10: ...Contents viii DigitalFlow XGS868i Programming Manual ...
Page 52: ...Chapter 1 Programming Site Data 42 DigitalFlow XGS868i Programming Manual ...
Page 85: ...DigitalFlow XGS868i Programming Manual 75 Appendix A Menu Maps Appendix A Menu Maps ...
Page 86: ...76 DigitalFlow XGS868i Programming Manual no content intended for this page ...
Page 96: ...86 DigitalFlow XGS868i Programming Manual no content intended for this page ...
Page 146: ...Appendix C Programming the XGS868i Using PanaView 136 DigitalFlow XGS868i Programming Manual ...
Page 148: ...138 DigitalFlow XGS868i Programming Manual no content intended for this page ...
Page 174: ...Warranty 164 DigitalFlow XGS868i Programming Manual no content intended for this page ...
Page 175: ......