16 Technical data and dimensions
16.1 General
Basis for the technical data of Pfeiffer Vacuum roots pumps
● Specifications according to PNEUROP committee PN5
● ISO 21360-1: 2016 “Vacuum technology - Standard methods for measuring vacuum-pump per-
formance - General description”
● Leak test to ascertain the integral leakage rate according to EN 1779: 1999 technique A1; with
100 % helium concentration, 10 s measurement duration
● Sound pressure level: distance to vacuum pump 1 m
mbar
bar
Pa
hPa
kPa
Torr | mm Hg
mbar
1
1 · 10
-3
100
1
0.1
0.75
bar
1000
1
1 · 10
5
1000
100
750
Pa
0.01
1 · 10
-5
1
0.01
1 · 10
-3
7.5 · 10
-3
hPa
1
1 · 10
-3
100
1
0.1
0.75
kPa
10
0.01
1000
10
1
7.5
Torr | mm Hg
1.33
1.33 · 10
-3
133.32
1.33
0.133
1
1 Pa = 1 N/m
2
Tbl. 26:
Conversion table: Pressure units
mbar l/s
Pa m
3
/s
sccm
Torr l/s
atm cm
3
/s
mbar l/s
1
0.1
59.2
0.75
0.987
Pa m
3
/s
10
1
592
7.5
9.87
sccm
1.69 · 10
-2
1.69 · 10
-3
1
1.27 · 10
-2
1.67 · 10
-2
Torr l/s
1.33
0.133
78.9
1
1.32
atm cm
3
/s
1.01
0.101
59.8
0.76
1
Tbl. 27:
Conversion table: Units for gas throughput
Special versions
The technical data and dimensions for the vacuum pump refer to the specified standard
version.
● For deviations in special versions, please refer to the rating plates or the enclosed in-
formation.
16.2 Substances in contact with the media
Pump parts
Substances in contact with the media
Pump housing
Cast iron (spheroidal graphite cast iron)
Rotor
Cast iron (spheroidal graphite cast iron)
Seals
FKM
Tbl. 28:
Materials that make contact with the process media
Technical data and dimensions
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