Entering Zero Cutoff And Setting Up Inputs; Zero Cutoff Value; Assume Saturation - GE XGS868 Programming Manual

November 2004
Entering Zero Cutoff and
Setting Up Inputs

Zero Cutoff Value

Assume Saturation

1-10
Enter the zero cutoff value and set up the temperature, pressure and
Input/Output
quality inputs via the
these parameters, refer to Figure A-1 in Appendix A.
IMPORTANT:
If an option card in
it may be turned
Options
Near a zero flow rate, the Model XGS868'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 below.
1. Open the SITE EDIT MENU from the Edit Functions menu.
2. Select Channelx.
3. Select Input/Output.
4. Enter a value from 0 to 1 ft/sec (0 to 0.30 m/sec) for the zero
cutoff and press Next Item/Enter. The recommended setting is 0.1
ft/sec (0.03 m/sec).
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. Use the pull-down menu to select whether you will assume
saturation or not and press Next Item/Enter. Proceed to one of the
following sections:
If you selected Yes - proceed to Steam Input Type on the next
•
page.
If you selected No - proceed to Temperature Input on the next
•
page.
submenu. While programming
Slot 1
fails to appear in this menu,
Off Global-Input/Output-
. See the
section on page 1-26 for setup instructions.
Programming Site Data