GE UTX878 Ultrasonic, User Manual

Page: 42 / 103

March 2004
2-18 Programming Site Data
Entering the Meter
Correction (K) Factor
With the K Factor submenu, you can calibrate or adjust the UTX878
readings to another flow reference. While following the programming
instructions, refer to Figure A-1 on page A-1 of Appendix A,
Menu
Maps .To enter K Factor data:
Note:
If you are in the PROG menu, proceed directly to Step 4. If you
scroll to a different option, press [ENT] twice to select that
option (once to enter and again to confirm the selection).
1. Press [ESC]. The UTX878 enters the User Program .
2. Press the [
X
] key until PROG is bracketed in the top left corner
and press [ENT].
3. Use the [
S
] and [
T
] keys to scroll to the desired Channel and
press [ENT].
4. Scroll to the K Factor submenu and press [ENT].
5. The screen shows three options: Off, Single and Table . Scroll to
the desired option, and press [ENT].
6. The menu varies, depending on your selection in Step 5.
•
If you select Off , no further choices are available.
•
If you select Single , the UTX878 displays the K Factor . To change
the value, press [ENT]. Use the arrow keys to change the value and
press [ENT].
IMPORTANT:
If you have enabled the Reynolds Correction factor
in the Fluid option, the K factor should be set to 1.00.
Otherwise, the typical factor is between 0.5 and 2.00.
•
If you select Table , the screen displays three options: Units, Rows
Used and Edit Table .
a. If you scroll to Units and press [ENT], the screen displays the
selected measurement units (either metric or English). Press
[ESC] or [ENT] to return to the previous screen.
b. If you select Rows Used , the program asks for the number of
rows you wish to use. Enter the desired number (from 2 to 20)
and press [ENT].
c. If you select Edit Table , the table opens with a series of rows .
Scroll to the desired row, and press [ENT].
d. For each row, the screen displays the X (velocity) value and the
K Factor. If you wish to change either value, scroll to the value
and press [ENT]. Use the arrow keys to change the value and
press [ENT].
e. Repeat steps c and d until you have programmed all available
data (from 2 to 20 rows).
Press [ESC] until you return to the PROG menu, or continue pressing
[ESC] until the display screen reappears.