Electro-Pneumatic Positioners
Connection
Connection - Piping
Note
To avoid entering moisture, oil, or dust into
selection of supply pressure compressor.
- 11 -
the product, please carefully make
It is recommended to attach air filter regulator before supply port of U-EPR.
Supply Pressure Condition
①
Dry air with at least 10
℃
lower than ambient temperature.
②
Avoid from dusty air. Filter can only sort 5 micron or larger.
③
Avoid any oil.
④
Comply with ANSI/ISA-57.3 1975(R1981) or ISA S7.3-1975(R1981).
⑤
Not to be used beyond the range of 1.4 - 7 kgf/
㎠
(140 - 700 kPA).
⑥
Set air filter regulator's supplied pressure 10% higher than actuator's spring range
pressure.
Pipe Connection
①
Make sure inside of pipe is emptied.
②
Do not use pipeline that is squeezed or has hole.
③
To maintain flow rate, use the pipeline that has more than 6mm inner diameter.
(10mm outer diameter)
④
Do not use extremely long pipeline system. It may affect flow rate due to the friction
inside of the pipeline.
Piping Connection with Actuator
Single acting actuator
U-EPR series single acting type is set to use OUT1 port. OUT1 port should be connected
with supply pressure port from actuator when using single acting type of spring return
actuator.
<Figure 11>
<Figure 11>
<Figure 12>
