Burkert Type 2012 - Manual (Page 10)

10
TechnicalData
Type 2012
7.4 Operating conditions
7.4.1 Temperature ranges
actuator
size
[mm]
actuator
material
temperature ranges
medium (for ptfe
seal)
environment
175 - 225 PA -10 ... +180 °C -10 ... +50 °C
7.4.2 pressure ranges
actuator
material
actuator size
[mm]
max. pilot pressure
[bar]
PA 175 - 225 6
medium and pilot pressure for control function a, flow direction
below the seat (standard):
Ori-
fice
maximum medium pressure / minimum pilot
pressure
actuator size ø [mm]
175 225
65 16/4.5 -
80 10/4.5 16/3.3
100 7/4.5 16/4.8
required minimum pilot pressure depending on medium
pressure
The following graphs illustrate the required minimum pilot pressure
depending on the medium pressure for control functions B and I (only
actuator size 175).
control functions B and i, flow direction below seat
0 1 2 3 4 5 6
2
4
6
8
10
12
14
16
DN 100
pilot pressure [bar]
m
edium
pressure
[bar]
DN 80 DN 65
Fig. 5: Pressure graph, control functions B and I, flow direction
below seat
The actuator ø 225 is not intended for control function B and
I, as the performance data of the actuator ø 175 to DN 100
are adequate here.
english