Installation
4.3
Principles of Operation
4.3.1
Pneumatic Operation of the Base Actuator
Bettis Q-Series actuator are intended to be operated by the Q-Series Control Modules. For more
details see section 4.3.3. Below figure shows the basic pneumatic operation of the actuator.
Figure 4
Typical Pneumatic Operation
A
B
A
The table below represents the cycle time (operating time) per different Actuator sizes:
Table 7.
Operating Speed
Cycle time in seconds
Actuator
size
Spring-Return
Double-Acting
A-port
pressurized
Spring
stroke
A-port
pressurized
B-port
pressurized
Q 40
0.6
0.5
0.6
0.5
Q 65
0.7
0.5
0.6
0.6
Q 100
0.8
0.6
0.8
0.7
Q 150
1.0
0.8
0.9
0.8
Q 200
1.3
0.9
1.0
1.0
Q 350
1.9
1.3
1.4
1.5
Q 600
3.2
1.9
2.2
2.2
Q 950
6.6
2.2
2.4
2.0
Q 1600
10.6
3.5
3.6
3.3
Operating time is average with actuator under load and solenoid valve fitted.
Test conditions:
1. Solenoid with flow capacity:
0.6 m
3
/hr
2. Pipe diameter:
6mm
3. Medium:
clean air
4. Supply pressure:
5.5 bar (80psi)
5. Load:
with average load
6.
Stroke:
90°
7. Temperature:
Room temperature
Spring-Return Operation
Double-Acting Operation
Installation, Operation and Maintenance Manual
DOC.IOM.BQ.E Rev. 3
April 2019
11
Section 4: Installation
