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®
Sample Gas Pumps for Hazardous Areas
P 2.2-ATEX, P 2.4 ATEX,
P 2.2-AMEX, P 2.4 AMEX, P 2.82 AMEX, P 2.84 AMEX
The transportation of sample gas in sample conditioning
systems requires reliable sample pumps. The corrosive
nature of the gas and the potential of condensate formation
are the real challenges for any pump.
§
Robust and reliable design
§
Easy to replace valves
These sample pumps are equipped with a bellows made
from solid PTFE. This design has demonstrated the
highest reliability and long lifetime in numerous
applications. Designed specifically for harsh gas
applications that have entrained liquids present or where
condensate is expected to form, it is recommended that the
pump head be pointed downwards to accommodate
draining of these liquids
§
Bellow made of one solid piece
§
Suitable for corrosive gases
§
Pumps gases with entrained liquid
§
Low noise
§
Vibration dampening console
§
Optional adjustable bypass valve
§
Long life
§
ATEX versions for Category 2
§
FM C-US approved versions for
Class I Div. 2
A special flange design makes the P2.4 and P2.84 designs
suitable for hot applications. The flange is designed in two
parts -- one carrying the pump head is installed in a heated
cabinet and the other carrying the electrical motor is
flanged to the outside of the cabinet keeping the motor in
ambient conditions.
The pumps employ explosion-proof motors. The ATEX
models are suitable for Category 2. The AMEX models are
FM C-US approved and suitable for Class I Division 2.
For easy installation, a support console with vibration
dampers is included for the P 2.2 ATEX, P 2.2 AMEX and
P 2.82 AMEX.
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Bühler Technologies GmbH
D - 40880 Ratingen, Harkortstr. 29
Tel.: + 49 (0) 2102 / 49 89-0 Fax: + 49 (0) 2102 / 49 89-20
Internet: www.buehler-technologies.com
e-mail: analyse@buehler-technologies.com
Overview of the basic pump models and links to further information
One piece Pumps
(see drawing 1)
Nominal free flow
(see flow curve)
ATEX types
(Europe)
EX II 2 G Ex c IIC
T1-T4
AMEX types
(US)
CL.I Div.2 Gr BCD
T1-T4
FM C-US approval
no. 3038101 / 3038101C
400 l/h (0.24 cfm)
Pumps with intermediate flange
(see drawing 2)
800 l/h (0.47 cfm)
400 l/h (0.24 cfm)
P 2.2 ATEX
P2.4 ATEX
P2.2 AMEX
Weight
800 l/h (0.47 cfm)
P 2.82 AMEX
P 2.4 AMEX
P2.84 AMEX
7.5 kg
8.5 kg
General technical data for all pumps
Power supply
Protection class
see order number (page 3&4)
Electrical IP 54
Mechanical IP 20
8.5 ml
Dead space
Pumps 400 l/h
Pumps 800 l/h
Ambient temperature
Motors 115 V, 230 V
Motor 380 - 420 V
Pump head
Media temperature valves*
*see table below
Nl/h
vacuum
Gas wetted materials:
PTFE, PVDF (Standard pump with 100 °C valves)
+ PEEK (Standard pump with 140 °C valves)
+ Viton (Standard Pump with 100 °C valves and bypass valves)
+ PCTFE, Viton (Standard Pump with 140 °C valves and
bypass valves)
+ 1.4571 (VA pump body)
+ 1.4401, Viton (VA pipe connections)
Ambient temperature
Motors 115 V, 230 V
Motor 380 - 420 V
Pump head
PTFE/PVDF max. 100 °C (212 °F) Media temperature valves*
-20 to 50°C (-4 to 122°F)
-20 to 40°C (-4 to 104°F)
see table below
PTFE/PEEK max. 140 °C (284 °F)
Nl/h
vacuum
bar (atm.)
-20 to 50 °C (-4 to 122 °F)
-20 to 40°C (-4 to 104°F)
see table below
PTFE/PEEK max. 120 °C (248 °F)
bar (g.)
bar (g)
bar (atm.)
800
450
700
400
flow curve
output
output
300
250
200
A000013d
100
50
-0,6 -0,5 -0,4 -0,3 -0,2 -0,1 0 0,2 0,4 0,6 0,8 1,0 1,2 1,4 1,6
at 60Hz + 10% flow
P 2.2 ATEX and AMEX
200
100
0
-0,6 -0,4 -0,2 0
0,2 0,4 0,6 0,8 1,0 1,2 1,4 1,6 1,8 2,0
at 60Hz + 10% flow
Media
temp.
bar
Restrictions for
sample and ambient temperature
Media
temp.
Media temp.
Sample without flammable gases T3
T4
Sample with flammable gases
T3
above the lower explosion limit
T4
DE 42 0009
05/2013
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400
bar
Restrictions for
sample and ambient temperature
Sample without
T3
flammable gases
T4
Sample with flammableT3
gases above the
T4
lower explosion limit
500
300
150
P 2.4 ATEX and AMEX
flow curve
600
A000124D
350
140 °C
120 °C
120 °C
50 °C
(284 °F)
(248 °F)
(248 °F)
(122 °F)
P 2.82 AMEX
Sample without flammable
gases
Sample with flammable
gases above the lower
explosion limit
T3
T4
T3
T4
120 °C (248 °F)
80 °C (176 °F)
100 °C (212 °F)
50 °C (122 °F)
T3
T4
T3
T4
Media
temp.
120 °C (248 °F)
80 °C (176 °F)
100 °C (212 °F)
50 °C (122 °F)
Pump head
temp.
120 °C (248 °F) 100 °C (212 °F)
80 °C (176 °F) 80 °C (176 °F)
100 °C (212 °F) 80 °C (176 °F)
50 °C (122 °F) 50 °C (122 °F)
P 2.84 AMEX
Sample without flammable
gases
Sample with flammable
gases above the lower
explosion limit
Pump head
Temp.
100 °C (212 °F)
80 °C (176 °F)
80 °C (176 °F)
50 °C (122 °F)
Ordering hints Atex:
Part-no.
42 XX X X X X X 9
0 00
61
62
1
2
3
4
5
1
2
1
2
3
1
2
9
1
2
3
4
9
Feature
Basic type
P2.2 Atex 400l/h (II 2G Ex c IIC T3/T4)
P2.4 Atex 400l/h (II 2G Ex c IIC T3/T4)
Motor supply
230 V 50 Hz. 0,88 A
230 V 60 Hz. 0,89 A
115 V 50 Hz. 1,76 A
115 V 60 Hz. 1,78 A
380-400 V 50 Hz. 0,41 A
Pump head position
Normal pos. Vertical
Pointing downwards *
Pump head material
PTFE
SS 1.4571
PTFE with bypass valve *
Valve material
to 100 °C PTFE/PVDF *
to 140 °C PTFE/PEEK
Male stud couplings (depending on pump head)
PTFE pump head
Stainless steel pump head
DN 4/6 (standard)
6 mm (standard)
DN 6/8
8 mm
3/8”
3/8"-1/4”
1/4"-1/8"
1/4”
1/4"-1/6”
Mounting accessories
including mounting console and buffer *
*not possible for P2.4 Atex
Ordering hints AMEX:
Part-no.
42 XX X X X X X 9
71
72
73
74
1
2
3
4
1
2
1
2
3
1
2
9
1
2
3
5
9
DE 42 0009
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0 00
Feature
Basic type
P2.2 Amex 400l/h (Cl.I, Div.2 Gps. B,C,D. T3/T4)
P2.4 Amex 400l/h (Cl.I, Div.2 Gps. B,C,D. T3/T4)
P2.82 Amex 800l/h (Cl.I, Div.2 Gps. B,C,D. T3/T4)
P2.84 Amex 800l/h (Cl.I, Div.2 Gps. B,C,D. T3/T4)
Motor supply
230 V 50 Hz. 0,88 A
230 V 60 Hz. 0,89 A
115 V 50 Hz. 1,76 A
115 V 60 Hz. 1,78 A
Pump head position
Normal pos. Vertical
Pointing downwards *
Pump head material
PTFE
SS 1.4571
PTFE with bypass valve *
Valve material
to 100 °C PTFE/PVDF **
to 140 °C PTFE/PEEK
Male stud couplings (depending on pump head)
PTFE pump head
Stainless steel pump head
1/4”-1/6” (standard)
1/4” (standard)
DN 6/8
8 mm
3/8”
3/8"-1/4”
1/4"-1/8"
6 mm
DN 4/6
Mounting accessories
including mounting console and buffer *
*not possible for P2.4 Amex and P2.84 Amex
**not possible for P2.4 Amex, P2.82 Amex and P2.84 Amex
Please keep in mind the required protection device for the pump’s motor!
Motor protection switches
- For mounting outside of hazardous area
230 V; 380-400 V, 0-1 A 9132020021
115 V, 1.6-2.5 A
9132020030
- For mounting inside of zone 1 or 2 (ATEX only)
230 V; 380-400 V, 0-1 A 9132020036
115 V, 1.6-2.5 A
9132020033
Hints for variations:
Position of pump head:
(P2.2 and P2.82 types only):
If the gas contains entrained liquids, the pump head must point downwards. Although the pump head may be turned by
the customer as described in the manual, we suggest ordering it in the required configuration.
Pump head material:
The standard material is PTFE. This can be equipped with a bypass valve to reach all the operation points in the grey
area in the flow curve of the pump head (P2.2 and P2.82 types only). Depending on the tubing requirements, a stainless
steel body may be ordered (bypass valve not available).
Valve material:
(P2.2 Atex and P2.82 Amex types only)
For standard non-heated applications with sample temperatures up to 100 °C (212 °F), the PTFE/PVDF valves are
sufficient. For higher temperatures, the valves for temperatures up to 140 °C (284 °F) are required. Please note that
maximum temperatures may be limited for certain temperature classes (see the tables on page 2).
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Dimensions of P 2.2 ATEX, P 2.2 AMEX, P 2.82 AMEX - Drawing 1
24
view with rotated pump head
M20x1,5
console
81
63
8
A
130
277,5
155,5
186
207
BÜHLER
100
125
205
220
M6
80
273,5
302
104
View “A”
18
130
adjustable
bypass valve
optional
100
Ø7
100
BÜHLER
130
Dimensions of P 2.4 ATEX, P 2.4 AMEX, P 2.84 AMEX - Drawing 2
39,5
107,5
24
A000115X
ca.145
Wall
max.30
M20x1,5
M6
8
63
196,5
155,5
186
207
BÜHLER
116
Ø7
80
85
100
125
89,5
205
220
254,5
370,5
°
DE 42 0009
05/2013
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ø94
ø110
ø7
Mounting Hints
1) Direction of the inlet/outlet
connections can be chosen while
mounting
2) If the gas carries condensate, the
inlet/outlet connections must point
downwards
chest view
30°
60
We reserve the right to amend specification