Threaded protection tube
Description
Each thermowell/protection tube is an important component of any temperature measuring location. It is used to separate the process from the surrounding area, thus protecting the environment and operating personnel and keeps aggressive media, high pressures and flow rates from the temperature probe itself and thereby enables the thermometer to be exchanged during operation.
Based on the almost limitless application possibilities, there are a large number of variants, such as thermowell designs or materials. The type of process connection and the basic method of manufacture are important design differentiation criteria. A basic differentiation can be made between threaded and weld-in thermowells/protection tubes, and those with flange connections.
Special features
- Designs per DIN 43772
- Design TW45-F: Form 5 Design TW45-G: Form 8
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- Thermowell styleForm 5 (female thread to thermometer)
- MaterialStainless steel 1.4571
- Process thread [P or E]G 1/2 B
- Connection to thermometer [N]—
- Insertion length [U1]—
- Tube dimension—
- CertificatesWithout
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| Model | TW45 |
| Product family | TW |
| Subcategory | Protection tube |
| Process connection | G ½ B male threadG ¾ B male thread |
| Thermowell material | Stainless steel 1.4571, Copper alloy |
| Weight | 0.11 kg |
| Certifications | 2.2 test report3.1 inspection certificate |
| Thermowell | Yes |
| Thermowell form | Form 5, Form 8 |
| Datasheet languages | EN |
| Protection tube form | |
|---|---|
| DesignTW45-F | Form 5 |
| DesignTW45-G | Form 8 |
| Version | ■ Version per DIN 43772 ■ Design similar to DIN 43772 (fast response) |
| Material (wetted) | ■ Stainless steel 1.4571 |
| Process connection | |||
|---|---|---|---|
| Type of process connection | ■ G½Bmale thread ■ G¾Bmalethread | ||
| Connection to thermometer | |||
| DesignTW45-F | ■ G½female thread ■ G¾female thread | ||
| DesignTW45-G | ■ G½Bmale thread ■ G¾Bmalethread | ||
| Bore size | |||
| Designs per DIN 43772 | ■ Ø7mm[0.28 in] ■ Ø9mm[0.35 in] ■ Ø11 mm[0.43 in] | ||
| Designs similar to DIN 43772, fast response | ■ Ø6.2 mm[0.24 in] ■ Ø8.2 mm[0.32 in] ■ Ø8.5 mm[0.34 in] ■ Ø10.2 mm[0.4 in] | ||
| Insertion length U | |||
| DesignTW45-F | ■ 82 mm[3.23 in] ■ 142 mm[5.59 in] ■ 182 mm[7.17 in] ■ 232 mm[9.13 in] ■ 382 mm[15.04 in] | ||
| DesignTW45-G | ■ 73 mm[2.87 in] ■ 110 mm[4.33 in] ■ 170 mm[6.69 in] ■ 260 mm[10.24 in] ■ 410 mm[16.14 in] | ||
| Overall length L | Insertion length U 1 + 28 mm[1.1 in] | ||
| Suitable stem length l 1 (dial thermometer) | |||
| DesignTW45-F | Connection design S 1) , 4 or 5 | l 1 = L - 10 mm[0.4 in] or l 1 = U1 + 18 mm[0.7 in] | |
| Connection design 2 | l 1 = L - 30 mm[1.2 in] or l 1 = U1 - 2 mm[0.1 in] | ||
| DesignTW45-G | Connection design 3 | l 1 = L - 12 mm[0.5 in] or l 1 = U1 + 16 mm[0.6 in] | |
| Suitable insertion length l 1 (machine glass thermometer) | |||
| DesignTW45-F | Connection design E | l 1 = L - 10 mm[0.4 in] or l 1 = U 1 + 18 mm[0.7 in] | |
| DesignTW45-G | Connection design 3 | Process connection (thermometer):G½ | l 1 = L - 12 mm[0.5 in] or l 1 = U1 + 16 mm[0.6 in] |
| Process connection (thermometer):G¾ | l 1 = L - 8 mm[0.3 in] or l 1 = U1 + 20 mm[0.8 in] |
| Max. process temperature, process pressure | Depending on: ■ Load diagram DIN 43772 ■ Protection tube design - Dimensions - Material ■ Process conditions - Flow rate - Medium density |
|---|---|
| Wake frequency calculation (option) | The calculation in accordance with Dittrich/Klotter of individual thermowells minimises the risk of dynamic damage that can be caused by the vortex shedding of a Kármán vortex street (Vortex Induced Vibration; VIV). In addition, the static loads due to lateral flow and the process pressure are calculated depending on the temperature.The calculation will be carried out as aWIKA engineered service (subject to charges). → For further information, seeTechnical information IN 00.15'Wake frequency calculation'. |
| Certificates | ■ 2.2 test report ■ 3.1 inspection certificate |
|---|
View all (7)
| Dimensions in mm[in] | Weight in kg [lbs] | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| E | N | Ø d 1 | Ø D 1 | Ø F 1 | H1 | H 2 | K1 | S | S 1 | SW | U 1 = 82mm [3.22 in] | U 1 = 382mm [15.04 in] | |
| Stainless steel 1.4571 | G½B | G½ | 7 [0.28] | 26 [1.02] | 12 [0.47] | 19 [0.75] | 15 [0.59] | 14 [0.55] | 2.5 [0.1] | 3.5 [0.15] | 27 [1.06] | 0.15 [0.33] | 0.33 [0.73] |
| G½B | G½ | 9 [0.35] | 26 [1.02] | 14 [0.55] | 19 [0.75] | 15 [0.59] | 14 [0.55] | 2.5 [0.1] | 3.5 [0.14] | 27 [1.06] | 0.15 [0.33] | 0.36 [0.79] | |
| G½B | G½ | 11 [0.43] | 26 [1.02] | 14 [0.55] | 19 [0.75] | 15 [0.59] | 14 [0.55] | 1.5 [0.06] | 2.5 [0.1] | 27 [1.06] | 0.12 [0.26] | 0.28 [0.62] | |
| G½B | G½ | 6.2 [0.24] | 26 [1.02] | 8 [0.32] | 19 [0.75] | 15 [0.59] | 14 [0.55] | 0.9 [0.04] | 1 [0.04] | 27 [1.06] | 0.12 [0.26] | 0.18 [0.4] | |
| G½B | G½ | 8.2 [0.32] | 26 [1.02] | 10 [0.39] | 19 [0.75] | 15 [0.59] | 14 [0.55] | 0.9 [0.04] | 1 [0.04] | 27 [1.06] | 0.12 [0.26] | 0.18 [0.4] | |
| G½B | G½ | 10.2 [0.40] | 26 [1.02] | 12 [0.47] | 19 [0.75] | 15 [0.59] | 14 [0.55] | 0.9 [0.04] | 1 [0.04] | 27 [1.06] | 0.12 [0.26] | 0.19 [0.42] | |
| G¾B | G½ | 7 [0.28] | 32 [1.26] | 12 [0.47] | 19 [0.75] | 15 [0.59] | 16 [0.63] | 2.5 [0.1] | 3.5 [0.14] | 32 [1.26] | 0.24 [0.53] | 0.42 [0.93] | |
| G¾B | G½ | 9 [0.35] | 32 [1.26] | 14 [0.55] | 19 [0.75] | 15 [0.59] | 16 [0.63] | 2.5 [0.1] | 3.5 [0.14] | 32 [1.26] | 0.24 [0.53] | 0.45 [0.99] | |
| G¾B | G½ | 11 [0.43] | 32 [1.26] | 14 [0.55] | 19 [0.75] | 15 [0.59] | 16 [0.63] | 1.5 [0.06] | 2.5 [0.1] | 32 [1.26] | 0.22 [0.49] | 0.37 [0.82] | |
| G¾B | G½ | 6.2 [0.24] | 32 [1.26] | 8 [0.32] | 19 [0.75] | 15 [0.59] | 16 [0.63] | 0.9 [0.04] | 1 [0.04] | 32 [1.26] | 0.21 [0.46] | 0.27 [0.6] | |
| G¾B | G½ | 8.2 [0.32] | 32 [1.26] | 10 [0.39] | 19 [0.75] | 15 [0.59] | 16 [0.63] | 0.9 [0.04] | 1 [0.04] | 32 [1.26] | 0.21 [0.46] | 0.27 [0.6] | |
| G¾B | G½ | 10.2 [0.40] | 32 [1.26] | 12 [0.47] | 19 [0.75] | 15 [0.59] | 16 [0.63] | 0.9 [0.04] | 1 [0.04] | 32 [1.26] | 0.21 [0.46] | 0.28 [0.62] | |
| G¾B | G¾ | 7 [0.28] | 32 [1.26] | 12 [0.47] | 22 [0.87] | 17 [0.67] | 16 [0.63] | 2.5 [0.1] | 3.5 [0.14] | 32 [1.26] | 0.20 [0.44] | 0.38 [0.84] | |
| G¾B | G¾ | 9 [0.35] | 32 [1.26] | 14 [0.55] | 22 [0.87] | 17 [0.67] | 16 [0.63] | 2.5 [0.1] | 3.5 [0.14] | 32 [1.26] | 0.20 [0.44] | 0.41 [0.9] |
| Material | Dimensions in mm[in] | Weight in kg [lbs] | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| E | N | Ø d 1 | Ø D 1 | Ø F 1 | H1 | H 2 | K1 | S | S 1 | SW | U 1 = 82mm [3.22 in] | U 1 = 382mm [15.04 in] | |
| Stainless steel 1.4571 | G¾B | G¾ | 11 [0.43] | 32 [1.26] | 14 [0.55] | 22 [0.87] | 17 [0.67] | 16 [0.63] | 1.5 [0.06] | 2.5 [0.1] | 32 [1.26] | 0.18 [0.4] | 0.33 [0.73] |
| G¾B | G¾ | 6.2 [0.24] | 32 [1.26] | 8 [0.32] | 22 [0.87] | 17 [0.67] | 16 [0.63] | 0.9 [0.035] | 1 [0.04] | 32 [1.26] | 0.17 [0.37] | 0.23 [0.51] | |
| G¾B | G¾ | 8.2 [0.32] | 32 [1.26] | 10 [0.39] | 22 [0.87] | 17 [0.67] | 16 [0.63] | 0.9 [0.04] | 1 [0.04] | 32 [1.26] | 0.17 [0.37] | 0.23 [0.51] | |
| G¾B | G¾ | 10.2 [0.40] | 32 [1.26] | 12 [0.47] | 22 [0.87] | 17 [0.67] | 16 [0.63] | 0.9 [0.04] | 1 [0.04] | 32 [1.26] | 0.17 [0.37] | 0.24 [0.53] | |
| Copper alloy | G½B | G½ | 8.5 [0.34] | 26 [1.02] | 10 [0.39] | 19 [0.75] | 15 [0.59] | 14 [0.55] | 0.75 [0.03] | 0.75 [0.03] | 27 [1.06] | 0.11 [0.24] | 0.18 [0.4] |
| G¾B | G½ | 8.5 [0.34] | 32 [1.26] | 10 [0.39] | 19 [0.75] | 15 [0.59] | 16 [0.63] | 0.75 [0.03] | 0.75 [0.03] | 32 [1.26] | 0.23 [0.51] | 0.29 [0.64] |
| Material | Dimensions in mm[in] | Weight in kg [lbs] | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| E | N | Ø d 1 | Ø D 1 | Ø F 1 | H 1 | H 2 | K 1 | S | S 1 | SW | U 1 = 73mm [2.87 in] | U 1 = 410mm [16.14 in] | |
| Stainless steel 1.4571 | G½B | G½ | 7 [0.28] | 26 [1.02] | 12 [0.47] | 19 [0.75] | 15 [0.59] | 14 [0.55] | 2.5 [0.1] | 3.5 [0.15] | 27 [1.06] | 0.14 [0.31] | 0.34 [0.75] |
| G½B | G½ | 9 [0.35] | 26 [1.02] | 14 [0.55] | 19 [0.75] | 15 [0.59] | 14 [0.55] | 2.5 [0.1] | 3.5 [0.14] | 27 [1.06] | 0.14 [0.31] | 0.37 [0.82] | |
| G½B | G½ | 11 [0.43] | 26 [1.02] | 14 [0.55] | 19 [0.75] | 15 [0.59] | 14 [0.55] | 1.5 [0.06] | 2.5 [0.1] | 27 [1.06] | 0.12 [0.26] | 0.30 [0.66] | |
| G½B | G½ | 6.2 [0.24] | 26 [1.02] | 8 [0.32] | 19 [0.75] | 15 [0.59] | 14 [0.55] | 0.9 [0.04] | 1 [0.04] | 27 [1.06] | 0.13 [0.27] | 0.20 [0.44] | |
| G½B | G½ | 8.2 [0.32] | 26 [1.02] | 10 [0.39] | 19 [0.75] | 15 [0.59] | 14 [0.55] | 0.9 [0.04] | 1 [0.04] | 27 [1.06] | 0.13 [0.27] | 0.20 [0.44] | |
| G½B | G½ | 10.2 [0.40] | 26 [1.02] | 12 [0.47] | 19 [0.75] | 15 [0.59] | 14 [0.55] | 0.9 [0.04] | 1 [0.04] | 27 [1.06] | 0.11 [0.24] | 0.18 [0.4] | |
| G¾B | G½ | 7 [0.28] | 32 [1.26] | 12 [0.47] | 19 [0.75] | 15 [0.59] | 16 [0.63] | 2.5 [0.1] | 3.5 [0.14] | 32 [1.26] | 0.22 [0.49] | 0.43 [0.95] | |
| G¾B | G½ | 9 [0.35] | 32 [1.26] | 14 [0.55] | 19 [0.75] | 15 [0.59] | 16 [0.63] | 2.5 [0.1] | 3.5 [0.14] | 32 [1.26] | 0.22 [0.49] | 0.46 [1.01] | |
| G¾B | G½ | 11 [0.43] | 32 [1.26] | 14 [0.55] | 19 [0.75] | 15 [0.59] | 16 [0.63] | 1.5 [0.06] | 2.5 [0.1] | 32 [1.26] | 0.20 [0.44] | 0.39 [0.86] | |
| G¾B | G½ | 6.2 [0.24] | 32 [1.26] | 8 [0.32] | 19 [0.75] | 15 [0.59] | 16 [0.63] | 0.9 [0.04] | 1 [0.04] | 32 [1.26] | 0.21 [0.46] | 0.28 [0.62] | |
| G¾B | G½ | 8.2 [0.32] | 32 [1.26] | 10 [0.39] | 19 [0.75] | 15 [0.59] | 16 [0.63] | 0.9 [0.04] | 1 [0.04] | 32 [1.26] | 0.21 [0.46] | 0.28 [0.62] | |
| G¾B | G½ | 10.2 [0.40] | 32 [1.26] | 12 [0.47] | 19 [0.75] | 15 [0.59] | 16 [0.63] | 0.9 [0.04] | 1 [0.04] | 32 [1.26] | 0.20 [0.44] | 0.27 [0.6] |
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