Performance Characteristics - Edwards RV3 Instruction Manual

MODE SE-
LECTOR
POSITION Closed (position '0')
Ultimate total pressure
mbar
3 x 10
Use for continuous inlet
High
pressure above
Throughput
mode S
50 mbar/5 x 10

3.2.2 Performance characteristics

Note:
The performance characteristics described below are for use with hydrocarbon oil.
The positions of the mode selector and the gas-ballast control define the performance
characteristics of the pump. These performance characteristics are listed fully in
Performance data- High Vacuum mode
mode .
Table: Performance characteristics
vapour inlet pressure for each of the six possible combinations of control positions. The
curves 0, I, and II in
speed against inlet pressure)
speed for High Vacuum mode S .
A65201880_AA
A65201880_AA - Technical data
Low flow (position 'I')
Ultimate total pressure
Pa
-2 3
(RV3/5)
4 x 10
(RV8/12)
Maximum water vapour
3
Pa 1-phase
0.06 kg h
Figure: Performance characteristics in High Vacuum mode (pumping
show the relationship between inlet pressure and pumping
GAS BALLAST CONTROL
mbar Pa
-2 6 (RV3/5)
6 x 10
4 (RV8/12)
-2
pumping rate
3-phase
pumps pumps
-1 -1
0.04 kg h
and Table: Performance data- High throughput
gives the ultimate vacuum and maximum water
Page 18
High flow (position 'II')
Ultimate total pressure
mbar
-1
1.2 x 10 (RV3) 1.2 x 10
-1
1.0 x 10 (RV5) 1.0 x 10
-2 6.0 (RV8/12)
6 x 10
(RV8/12)
Maximum water vapour pump-
ing rate
1-phase pumps 3-phase pumps
-1
0.22 kg h 0.12 kg h
(RV3/5/8) (RV3/5)
-1
0.29 kg h 0.20 kg h
(RV12)
0.25 kg h
03/2021 - ©Edwards Limited
Pa
1
(RV3)
1
(RV5)
-1
-1
(RV8)
-1
(RV12
Table: