Burkert Type 2301 - Manual (Page 14)

14
Technical data
7.4.2 control medium
In conjunction with pneumatic control units (positioner and 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 [mm] connection
size [mm]
pilot pressure range 5) [bar]
cfa cfB
ш 50 15 – 25 3.4 – 5.5 3.3 – 5.1
ш 70 15 – 25 2.6 – 5.5 2.6 – 5.2
ш 90 25 – 50 3.3 – 5.5 1.8 – 2.5
ш 130
32 – 50 3.3 – 5.6 1.9 – 2.7
65 – 100 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 (positioner or process controller), observe the
permitted minimum and maximum pilot pressure!
maximum pilot pressure for valves without pneumatic control
units
actuator size max. permitted pilot pressure 6)
ø 50 mm
10 bar ø 70 mm
ø 90 mm
ø 130 mm
7 bar
Tab. 4: Pilot pressure for valves without pneumatic control units
6)
Observe the maximum pressure range according to the
type label!
english
Type 2301