13 Technical data and dimensions
13.1 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. 20:
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. 21:
Conversion table: Units for gas throughput
13.2 Technical data
Order number
PP W33 300
PP W33 350
Classification
Okta 500 ATEX
Okta 500 ATEX
Version
Ex II 3/3G Exh IIB T3 Gc X
+5 °C ≤ T
a
≤ +40 °C with
motor, magnetic coupling
and blocked overflow-valve
Ex II 3/3G Exh IIB T3 Gc X
+5 °C ≤ T
a
≤ +40 °C with
motor, magnetic coupling
and overflow-valve
Flange (in)
DN 100 PN 16
DN 100 PN 16
Flange (out)
DN 100 PN 16
DN 100 PN 16
Nominal pumping speed
280 – 670 m³/h
280 – 670 m³/h
Nominal pumping speed at 50 Hz
560 m³/h
560 m³/h
Nominal pumping speed at 60 Hz
670 m³/h
670 m³/h
Nominal pumping speed min.
280 m³/h
280 m³/h
Nominal pumping speed max.
670 m³/h
670 m³/h
Input voltage 50 Hz
230 / 400 V
230 / 400 V
Input voltage 60 Hz
265 / 460 V
265 / 460 V
Input voltage: tolerance
±5 %
±5 %
Rated power 50 Hz
1.5 kW
1.5 kW
Rated power 60 Hz
1.8 kW
1.8 kW
Technical data and dimensions
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