Design and function – WIKA TW61 User Manual
Page 9
WIKA operating instructions thermowell, model TW61
11593963.03 03/2014 GB/D/F/E
9
GB
4. Design and function
Nominal
width of
tube
Nominal
pressure
in bar
Outer
diameter
of pipe
Tube wall
thickness
Tube
length
Thermowell
insertion
length
Neck tube length
TR21-B TR22-B
OD
PN
1) 2)
Ø D
s
TL
U
1
M
M
13.5
25
13.5
1.6
64
6
51
129
17.2
25
17.2
1.6
68
9
48
126
21.3
25
21.3
1.6
72
11
46
124
26.9
25
26.9
1.6
110
11
46
124
33.7
25
33.7
2.0
120
18
39
117
42.4
25
42.4
2.0
130
18
39
117
48.3
25
48.3
2.0
130
18
39
117
60.3
25
60.3
2.0
180
30
27
105
76.1
16
76.1
2.0
220
30
27
105
88.9
16
88.9
2.3
260
45
12
90
ISO tubes or DIN 11866 series B
Nominal
width of
tube
Nominal
pressure
in bar
Outer
diameter
of pipe
Tube wall
thickness
Tube
length
Thermowell
insertion
length
Neck tube length
TR21-B TR22-B
OD
PN
1) 2)
Ø D
s
TL
U
1
M
M
10
25
13
1.5
70
6
51
129
15
25
19
1.5
70
9
48
126
20
25
23
1.5
80
11
46
124
25
25
29
1.5
100
18
39
117
32
25
35
1.5
110
18
39
117
40
25
41
1.5
120
18
39
117
50
25
53
1.5
160
30
27
105
65
16
70
2.0
210
30
27
105
80
16
85
2.0
260
45
12
90
100
12.5
104
2.0
310
45
12
90
Metric or DIN 11866 series A
Nominal
width of
tube
Nominal
pressure
in bar
Outer
diameter
of pipe
Tube wall
thickness
Tube
length
Thermowell
insertion
length
Neck tube length
TR21-B TR22-B
OD
PN
1) 2)
Ø D
s
TL
U
1
M
M
½"
13.8
12.7
1.65
95.2
6
51
129
¾"
13.8
19.05
1.65
101.6
9
48
126
1"
13.8
25.4
1.65
108.0
11
46
124
1 ½"
13.8
38.1
1.65
120.6
18
39
117
2"
13.8
50.8
1.65
146.0
18
39
117
2 ½"
13.8
63.5
1.65
158.8
30
27
105
3"
13.8
76.2
1.65
171.4
30
27
105
4"
13.8
101.6
2.11
209.6
45
12
90
ASME BPE or DIN 11866 series C
1) Maximum operating temperature 150 °C
2) All thermowells of this model series which are exposed to internal pressure and have a nominal diameter (DN) of > 25 mm are
manufactured and tested in accordance with module H of the pressure equipment directive 97/23/EC.