Burkert 2300 Series, Operating Instructions Manual, Page: 13 / 130

13
Technical data
7.4.2 control medium
In conjunction with pneumatic control units (positioner or process
controllers), pilot air according to DIN ISO 8573-1 must be used:
• Class 3 (for water content)
• Class 5 (for dust and oil content).
The specification is described in detail in the operating
instructions of the respective positioner / process controller
in the chapter entitled “Technical data”.
7.4.3 pressure ranges
pilot pressure range
5)
on controlled operation
actuator
size Orifice dn
[ mm ]
pilot pressure range
5)
[bar]
cfa cfB
ø 50 mm 15 – 25 3.4 – 5.5 3.3 – 5.1
ø 70 mm 15 – 32 2.6 – 5.5 2.6 – 5.2
ø 90 mm 25 – 50 3.3 – 5.5 1.8 – 2.5
ø 130 mm
40 – 50 3.3 – 5.6 1.9 – 2.7
65 4.6 – 5.6 1.9 – 2.7
Tab. 3: Pilot pressure range on controlled operation
5)
To ensure reliable operation with pneumatic control units (posi-
tioner or process controller), observe the permitted minimum
and maximum pilot pressure!
maximum pilot pressure for valves
without pneumatic control unit
actuator size actuator material
max. permitted pilot
pressure
6)
ø 50 mm
PPS
10 bar ø 70 mm
ø 90 mm
ø 130 mm
7 bar
Tab. 4: Pilot pressure for valves without pneumatic control unit
6)
Observe the maximum pressure range according to the type
label!
english
Type 2300