Smart Positioner
YT-2500 / 2550 / 2501 Series
Product manual
Ver. 1.04
45
8.8.2
Valve flow Characteristic Adjustment (CHAR)
The valve flow characteristic can be set on the field
’s
requirement. There are 4 types of characteristics
–
linear (LIN), user setting (USR), quick open (QO), and
equal percentage (EQ).
<ENTER>
<ENTER>
<UP>/<DOWN>
<ENTER>
Press <UP> or
<DOWN> button
if the above is not
displayed.
<ESC>
3 times
8.8.3
User defining flow Characteristics (USER SET)
In case positioner requires a specific flow characteristic, the valve characteristic curve can be
made by selecting up to 16 points of the curve. This function can be activated by selecting
“CHAR USR” mode of above 8.8.2
Valve flow Characteristic Adjustment (CHAR).
<ENTER>
<ENTER>
<UP>/<DOWN>
<ENTER>
or <ENTER>
Press <UP> or
<DOWN> button
if the above is not
displayed.
<UP>/<DOWN>
<ENTER>
or <ENTER>
Repeat step
if necessary
<UP>/<DOWN>
<ENTER>
or <ENTER>
1 Second later
<ESC>
3 times
