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3.2 Pneumatic connection
3.2.1 Safety instructions
!
WARNING
!
NOTICE
3.2.2 Making the pneumatic connection
Fig. 16
Pneumatic connectors
All pneumatic connectors are on the right-hand side of the positioner. Threaded bores
G 1/4 or 1/4-18 NPT, respectively, are provided for pneumatic connection. The positioner
is labeled according to the type of thread. The corresponding screwed pipe connections
have to be supplied by the customer. We recommend pipes with the dimension 6 x 1 mm
for the pneumatic piping. Prior to connecting the pneumatic pipes always remove dust,
splinters or similar particles by blowing the pipes out.
The amount of supply pressure has to be matched to the working pressure necessary for
the actuation. The positioner's operating range is between 1.4 and 6 bar.
42/18-54 EN
•
Observe the accident prevention rules of the Employers Liability
Insurance Association.
•
Observe the safety instructions for the pneumatic actuator used.
The actuator's high actuating power may cause injuries!
•
Take suitable precautions to ensure that even in case of malfunctions
the positioner's max. admissible operating pressure of 6 bar (90 psi) is
not exceeded. Otherwise, the positioner and/or the actuator may be
damaged.
•
The positioner must be supplied with instrument air exempt from oil,
water and dust according to DIN/ISO 8573-1, Class 3
- Purity: max. particle size 5 µm, max. particle density 5 mg/m
- Oil content: max. concentration 1 mg/m
- Pressure dew point: maximum value 10 K below operating temp.
Before connecting the air pipes blow them out to remove dust, splin-
ters and other particles.
Electro-pneumatic positioner TZID
3
1 / 4 - 18 NPT
or
G 1 /4
3
3
21
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