Note On Attachment To Type 3275 Piston Actuator; Pneumatic Connections; Pressure Gauges - Samson 3710 series Mounting And Operating Instructions

Pneumatic connections

4.5.1 Note on attachment to
Type 3275 Piston Actu-
ator
When mounting the reversing amplifier with
the Type 4708-54 Supply Pressure Regulator
and positioner onto a Type 3275 Piston Ac-
tuator:
Î Mount the positioner in such a manner
that the pneumatic connections are lo-
cated on the left side (Fig. 7).
The supply pressure regulator can only
be mounted onto the reversing amplifier
in this mounting position.
Fig. 7: Type 3710 Reversing Amplifier,
Type 4708-54 Supply Pressure
Regulator with Type 3730 Positioner
mounted on Type 3275 Piston Actuator
12
5 Pneumatic connections
The air connections are designed either with
¼-18 NPT or G ¼ threads. Customary fit-
tings for metal or copper tubing or plastic
hoses can be used.
Signal pressure connections
Î See dimension diagram on page 15
for connections
Î Y : Connect output Y
1
pressure connection on the actuator that
causes the valve to open when the pres-
sure rises.
Î Y : Connect output Y
2
pressure connection on the actuator that
causes the valve to close when the pres-
sure rises.

5.1 Pressure gauges

The Type 3710 Reversing Amplifier is de-
signed with connections for two pressure
gauges on both sides. The connections are
sealed with screw plugs G
sure gauge is not installed.
Fig. 8: The pressure gauges indicate the signal
pressure at the outputs.
to the signal
1
to the signal
2
when a pres-
1 /
8
Y
1
Y
2
EB 8392 EN