Data Sheet E 225
Diaphragm Pumps for Air, Gases and Vapours
LABOPORT®
Mini Diaphragm
Vacuum Pumps
Technical features:
왎 100% oil-free transfer
왎 Pure transferring and evacuation of gases
왎 Version for slightly aggressive or corrosive gases
and vapours
왎 Maintenance-free
왎 Environmentally friendly
왎 High level of gas tightness.
Series LABOPORT®
N 938.50 K_.18 Pumps
Series N 938.50 diaphragm pumps are double-head, dry-running devices used in a wide range of laboratory applications.
They transfer and pump down without contamination.
The pumps are equipped with parallel and series connection
for the pump heads - resulting in a high pneumatic performance, a durable product and compact size. Special valves
ensure that the product can cope easily with vapour and
condensation.
The pumps are available in various versions differing in the
materials which contact the media.
Material in contact with the pumped media
Type/Order No.
Pump head Diaphragm
Valves
N 938.50 KN.18
N 938.50 KT.18
PPS
PPS
EPDM
FFPM
EPDM
PTFE-coated
Technical data:
N 938.50 KN.18
Delivery (l/min)1)
32
Ultimate vacuum
(mbar abs.)
12
Operating pressure
(bar g)
0.5
Connectors for tube
(mm)
ID 10
Permissible gas and
ambient temperature +5...+40 °C
Mains
230V/50Hz
Motor protection
IP 20
Power P1
110 W
Operating current
0.6 A
Weight
6.8 kg
Dimensions
L x H x W (mm)
317/212/110
With thermal switch and power fuse
N 938.50 KT.18
30
15
0.5
ID 10
+5...+40 °C
230V/50Hz
IP 20
110 W
0.6 A
6.8 kg
317/212/110
Motors with other voltages and frequencies on request.
1) at atm. pressure
Accessories and spare parts
Description
Details
Order No.
Silencer
Hose connector
Fine control valve with vacuum gauge
Spares kit
Spares kit
G 1/8
G 1/8, PVDF for tube ID 10
suction side
for N 938.50 KN
for N 938.50 KT
007006
112004
112432
124808
124809
KNF reserves the right to make changes.
KNF 01/2013 Produced in Germany
Data Sheet E 225
Dimensions and performance characteristics
Pump down time for 10 l receiver
Performance
N 938.50 KN.18
N 938.50 KN.18
Vacuum
atm. Press.
35
Flow capacity l/min
(Litre at STP)
1013
800
mbar
600
400
200
0
30
25
20
15
10
5
0
1
2
3
4
5
0
6
0
200
400
600
800
1013
mbar
min
Pump down time for 10 l receiver
Performance
N 938.50 KT.18
N 938.50 KT.18
Vacuum
atm. Press.
35
Flow capacity l/min
(Litre at STP)
1013
800
mbar
600
400
200
0
30
25
20
15
10
5
0
1
2
3
min
4
5
6
0
0
200
400
600
800
1013
mbar
Dimensions (mm)
KNF Neuberger GmbH, Alter Weg 3, D-79112 Freiburg, Tel. ++49(0)7664/5909-0, Fax ++49(0)7664/5909-99, www.knf.de, E-Mail: [email protected]
KNF reserves the right to make changes.
KNF 01/2013 Produced in Germany