Principle Of Operation; Accessories; Mounting Position Of The Converter - Samson 611 Mounting And Operating Instructions

5.5.1

Principle of operation

When operated, the supplied direct current i
flows through the plunger coil (2) located in
the field of a permanent magnet (3). At the
balance beam (1), the force of the plunger
coil, which is in proportion to the current, is
balanced against the force of the dynamic
backpressure. The backpressure is produced
on the flapper plate (6) by the air jet leaving
the nozzle (7).
The air supply for the nozzle is taken from
the pneumatic positioner (connection to the
pneumatic input signal – input signal 27).
2
Type 6116
1 Balance beam
2 Plunger coil
3 Permanent magnet
6 Flapper plate
Fig. 12: Functional diagram of version mounted on a positioner
EB 6116 EN
1
3
7 Nozzle
8 Adapter (3766)
9 Connecting piece
10 O-ring
5.5.2
Certain mounting accessories are required
for attachment of a positioner (see sec-
tion 3.3).
5.5.3
Î Mount the converter horizontally using
the adapter (8, 9) onto the control valve
or positioner. In this case, the cable entry
must face sideways away from the con-
trol valve or positioner.
Î Make sure the O-ring (10) to seal the en-
closure is inserted correctly.
7 8(9) 11
6 13
10
Input signal 27
Mounting and start-up

Accessories

Mounting position of the
converter
Positioner
14
Supply air
11 Vent plug
13 Flame protection filter
14 Restrictor with air supply
29