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2. Design and function
Clamp per DIN 32676 for pipes per
DIN 11866, row A
DN
For pipe
Outer Ø x wall
thickness
10
13 x 1.5
15
19 x 1.5
20
23 x 1.5
25
28 x 1
32
34 x 1
40
40 x 1
50
52 x 1
Clamp per DIN 32676 for pipes per
DIN 11866 row C (ASME BPE)
DN
For pipe
Outer Ø x wall
thickness
¾"
19.05 x 1.65
1"
25.4 x 1.65
1 ½" 38.1 x 1.65
2"
50.8 x 1.65
1) For maximum pressure range consider pressure rating of clamp.
2) Maximum operating temperature 150 °C
3) All thermowells of this series that are internally pressurised, with a nominal diameter (DN) greater than 25 mm, are
manufactured and tested to module H of the pressure equipment directive.
WIKA operating instructions model TR25 (Ex i)
Dimensions
PN
2) 3)
Ø D
L
Ø D
i
10
71
34
40
16
71
34
40
20
71
34
40
26
71
50.5
40
32
71
50.5
40
38
71
50.5
40
50
71
64.0
25
Dimensions
PN
2) 3)
Ø D
L
Ø D
i
15.75
71
25
40
22.1
71
50.5
40
34.8
71
50.5
40
47.5
71
64.0
25
Clamp per DIN 32676 for pipes per
DIN 11866 row B (ISO 1127)
DN
For pipe
1)
Outer Ø x wall
thickness
8
13.5 x 1.6
10
17.2 x 1.6
15
21.3 x 1.6
20
26.9 x 1.6
25
33.7 x 2
32
42.4 x 2
40
48.3 x 2
Tri-clamp for pipes per BS4825 part 3
and O.D. tube
DN
For pipe
1)
Outer Ø x wall
thickness
½"
12.7 x 1.6
¾"
19.05 x 1.6
1"
25.4 x 1.6
1 ½" 38.1 x 1.6
2"
50.8 x 1.6
Dimensions
PN
2) 3)
Ø D
L
Ø D
i
10.3
71
25.0
40
14.0
71
25.0
40
18.1
71
34.0
40
23.7
71
50.5
40
29.7
71
50.5
40
38.4
71
50.5
40
44.3
71
64.0
25
Dimensions
PN
2) 3)
Ø D
L
Ø D
i
9.5
71
25.0
40
15.85
71
25.0
40
22.2
71
50.5
40
34.9
71
50.5
40
47.6
71
64.0
25
1)
EN
1)
7
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