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Electro-Pneumatic Positioner
TS600 Series
tissin
6
Adjustment
CAUTION
Zero and span must be set correctly so product can be operated normally. If the setting is
not correct, impact on performance like linearity. So please the zero and span position must
be set correctly.
6.1
Zero and Span Adjustment
①
Set the input current to 4mA and turn the zero adjusting screw by hand to set it to the
actuator starting 0% point.
②
Then, set the input current to 20mA DC and check the actuator stroke. At this point,
depending on whether the span is too large or too small loosen the lock screw and then
adjust the span as shown in the illustration above, set it to the actuator 100% end point.
③
It shall set the input current to 0% and conduct the zero point adjustment, as done is
step1 again, because Span and zero point adjustment interfere in each other.
④
Repeat the above operations until the predetermined stroke of the actuator is obtained to
the input current.
<Span and Zero structure>
