7 ND92F 70 en 9
4.6 Piping
Table 2 provides the recommended tube sizes in
accordance with actuator sizes. Tube sizes are the mini-
mum values allowed. Operating times may be tested by
the FieldCare software.
Connect the air supply to S (1/4 NPT).
Connect C1 and C2 (1/4 NPT) to the actuator, see Fig. 6.
ND9200F is connected direct to the EC or EJ actuator.
Connections C1 and C2 (1/4 NPT) must be plugged, see
12.3.
Liquid sealants, such as Loctite 577 are recommended
for the pipe threads.
The air supply must be clean, dry and oil-free instrument
air, see Section 2.4.
CAUTION:
Do not exceed the permitted supply pressure of
the ND9200F!
NOTE:
A valve controller mounted on a spring actuator must
be connected only as single-acting. See Fig. 6.
NOTE:
An excess of sealant may result in faulty operation of
the controller.
Sealing tape is not recommended.
Ensure that the air piping is clean.
Table 1 Spring rates
Actuator type Spring rate (bar/psi)
B1JK 3 / 43
B1J 4.2 / 61
B1JV 5.5 / 80
QPB 3 / 43
QPC 4.3 / 62
QPD 5.6 / 81
EJK 3 / 43
EJ 4 / 57
EJV 5 / 72
Adjust regulator pressure to a level that is max 1 bar
(14.5 psi) + spring rate.
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