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Flow switch DW-N-Ex Henke Sass Wolf

Flow switch for potentially explosive atmospheres

  • Easy adjustment of connection points according to the scale
  • Dirt in the fluid and external magnetic fields do not affect operation
  • Can be supplied for different flow directions and mounting positions
  • Max. System pressure 16 bar

Material options:

Model T-piece Metering system Bellows
DW-N-A Brass Brass AISI 316Ti
DW-N-B AISI 316Ti AISI 316Ti AISI 316Ti
DW-N-C PVC AISI 316Ti AISI 316Ti

Ex, 2G, EEx c, IIB T 4
Ex, 3D, IP 65, T 125°C
–20° ≤ Ta ≤ 70°C

INQUIRIES AND ORDERING INSTRUCTIONS :

  • Flow switch model (A, B, C)
  • End connection
  • Medium, if other than water, indicate viscosity and operating temperature
  • Operating pressure and maximum pressure
  • Scale (selectable 1: 5 or 1: 4 according to the table above)
  • Installation position and flow direction
  • Switching voltage (if other than 230 V / 50Hz)

For viscosity fluids, gases, etc.
Inquire, eg 2-10 l / min lower flow rates as soon as possible, higher volumes on request.

Sales information

Wermundsen OÜ
Mustamäe tee 55
EE-10620 Tallinn, Estonia
Tel: (+372) 601 4202
wermundsen@wermundsen.ee

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Manufacturer's homepage


Flow values ​​for water 20 ° C

Connection

DN

min. H2O

max. H2O

DW-N

DW-N-Ex

l/min

m3/h

l/min

m3/h

⅜"

10

1

25

1:5

1:4

½"

15

1

55

1:5

1:4

¾"

20

5

100

1:5

1:4

1"

25

6

=

0,36

150

=

9

1:5

1:4

1¼"

32

10

=

0,6

250

=

15

1:5

1:4

1½"

40

20

=

1,2

400

=

24

1:5

1:4

2"

50

50

=

3,0

600

=

36

1:5

1:4

2½"

65

80

=

4,8

1 000

=

60

1:4

1:4

3"

80

120

=

7,2

1 500

=

90

1:4

1:4

4"

100

200

=

12

2 400

=

144

1:4

1:4

5"

125

300

=

18

4 000

=

255

1:4

1:4

6"

150

400

=

24

5 500

=

330

1:4

1:4

8"

200

700

=

42

10 000

=

600

1:4

1:4

10"

250

1 200

=

72

15 000

=

900

1:4

1:4

12"

300

1 700

=

102

20 000

=

1 200

1:4

1:4

14"

350

2 500

=

150

30 000

=

1 800

1:4

1:4

16"

400

3 000

=

180

40 000

=

2 400

1:4

1:4

20"

500

5 000

=

300

60 000

=

3 600

1:4

1:4

24"

600

7 000

=

420

75 000

=

4 500

1:4

1:4

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