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5. Switch versions for hazardous locations
As option there is an intrinsically safe approved version for G and D environments according to
ATEX regulations. These switches, marked with EEx ia label, must be operated with a certified
switch amplifier according to the applicable regulations.
Design conditions, approval data and instructions must be observed carefully. Installation and
operation must be performed by trained personnel only.
Approval data:
Approved for:
Certificate-No.: ISSeP08ATEX016X/1
Electrical data for intrinsically safe application:
6. Technical data:
Operating data
BFS-30-N
Pressure MS / MS with GL 250 bar / 100 bar
Pressure VA
300 bar
Pressure drop
0,02 - 0,4 bar
Temperature max.
120 °C
Electrical data*
Normally open
250 V - 3 A - 100 VA
Change over**
250 V - 1,5 A - 50 VA
Protection
IP65
Materials
brass
Housing
brass
Float
brass
Spring
1.4571
Seals
Perbunan, Viton or EPDM
Accuracy
±10% of FS
Electrical connection acc. to DIN 43650 or with 1 m cable
Operating data
BFS-30-O
Pressure MS
250 bar
Pressure VA
300 bar
Pressure drop
0,02 - 0,4 bar
Temperatuer max.
120 °C
Electrical data*
Normally open
250 V - 3 A - 100 VA
Change over**
250 V - 1,5 A - 50 VA
Protection
IP65
Materials
brass
Housing
brass
Float
brass
Spring
1.4571
Seals
Perbunan, Viton or EPDM
Accuracy
±10% of FS
Electrical connection acc. to DIN 43650 or with 1 m cable
*
Data only for application in non explosive atmosphere
** Minimum load: 3 VA
Contact rating for SPS-applications: 200 V, 1 A, 20 VA (Please request)
3
II 1 GD Ex ia IIB T6 Ga, Ex ia IIIC T100°C Da
U
=
28 V
C
= 40 pF
i
i
I
=
50 mA
L
= 4 µH
i
i
BFS-30-L
300 bar / 100 bar
350 bar
0,02 - 0,2 bar
120 °C
230 V - 3 A - 60 VA
250 V - 1,5 A - 50 VA
IP65
stainl. steel
brass
stainl. steel
1.4571
brass
1.4571
1.4571
brass
1.4571
1.4571
1.4571
1.4571
±10% of FS
stainl. steel
1.4571
1.4571
1.4571
Dimensions (in mm)
BFS-30-N / L
G
W
BFS-30-O
G
W
(BFS-30-L)
(G)
G 1/4
G 1/2
G 3/4
G 1
(hex)
34
34
34
40
ø
(
)
40
40
40
40
(W)
76
76
76
76
(D)
21
21
21
17
(L)
152
152
152
130
Weight (g) 1500
1425
1340
1160
(G)
G 1/4
G 1/2
G 3/4
(hex)
34
34
34
ø
(
)
40
40
40
(W)
76
76
76
(D)
21
21
21
(L)
152
152
152
Weight (g) 1590
1515
1430
1/2"
27
31
52
14
90
350
G 1
40
40
76
17
130
1250
4
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