Samson 3730 Series User Manual

5-38 EB 8384-3 EN
Installation
5.9 Mounting positioners with
stainless steel housings
Positioners with stainless steel housings re-
quire mounting parts that are completely
made of stainless steel or free of aluminum.
The pneumatic connecting plate and pres-
sure gauge bracket are available in stainless
steel (order numbers listed below). The
Type3710 Pneumatic Reversing Amplier is
also available in stainless steel.
Connecting plate
(stainless steel)
G¼
¼NPT
1400-7476
1400-7477
Pressure gauge
bracket
(stainless steel)
G¼
¼NPT
1402-0265
1400-7108
Table 5-4 to Table 5-10 apply for attaching
positioners with stainless steel housings with
the following restrictions:
Direct attachment
All mounting kits from Table 5-6 can be used.
The connection block is not required. The
stainless steel version of the pneumatic con-
necting plate routes the air internally to the
actuator.
Attachment according to IEC60534-6
(NAMUR rib or attachment to rod-type
yokes)
All mounting kits from Table 5-7 can be
used. Connecting plate in stainless steel.
Attachment to rotary actuators
All mounting kits from Table 5-10 can be
used except for the heavy-duty version. Con-
necting plate in stainless steel.
5.10 Air purging function for
single-acting actuators
The instrument air leaving the positioner is di-
verted to the actuator spring chamber to pro-
vide corrosion protection inside the actuator.
Observe the following:
Direct attachment to Type 3277-5 (stem
extends FA/stem retracts FE)
The air purging function is automatically
provided.
Direct attachment to Type3277, 175 to
750cm²
FA: Remove the stopper (12.2, Fig.5-6) at
the black connection block and make a
pneumatic connection to the spring
chamber on the vented side.
Mounting possibly incorrect when old
powder-paint-coated aluminum con-
nection blocks are used.
Mount old powder-paint-coated alumi-
num connection blocks as described in
'Attachment according to IEC60534-6
(NAMUR rib or attachment to rod-type
yokes)' and 'Attachment to rotary actua-
tors'.
Note
NOTICE
!

Samson 3730 Series Specifications

General

Brand	Samson
Model	3730 Series
Category	Valve Positioners
Language	English