Samson TROVIS 3730-1, Перевод оригинальной инструкции

Страница: 65 / 144

EB 8484-1 EN 5-31
Installation
The pneumatic connecting plate and pressure
gauge bracket are available in stainless steel
(order numbers listed below). The Type 3710
Pneumatic Reversing Amplifier is also avail
-
able 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 5-5 and Table
5-6 can be used. The connection block is not
required. The stainless steel version of the
pneumatic connecting plate routes the air in-
ternally 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.
5.6.9 Air purging function for
single-acting actuators
The instrument air leaving the positioner is
diverted to the actuator spring chamber to
provide corrosion protection inside the actu-
ator. 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
Stem extends:
remove the stopper (12.2,
Fig. 5-9) at the black connection block and
make a pneumatic connection to the spring
chamber on the vented side.
Stem retracts: the air purging function is au-
tomatically provided.
Attachment according to IEC 60534-6
(NAMUR rib or attachment to rod-type
yokes) and to rotary actuators
The positioner requires an additional port for
the exhaust air that can be connected over
piping. An adapter available as an accesso-
ry is used for this purpose:
Threaded bushing
(M20x1.5) G ¼
¼ NPT 0310-2619
0310-2550
The adapter uses one of the M20x1.5 con -
nections in the housing which means only
one cable gland can be installed.
Note
Note