WIKA · Temperature measurement · Family TW
Protection tube
Protection tube for sanitary applications, compatible with resistance thermometers and mechanical thermometers in hygienic processes.
Range
-200…150 °C
Protection
IP68
EAC3-AEHEDG
Price
On request
Depends on configuration
Description
The model TW22 protection tube is used to adapt thermometers and measuring inserts to the process and protects the sensor against harsh process conditions. The protection tube is mounted to a weld-in nozzle equipped with a respective hygienic connection and is built in pipelines and tanks.
Due to the rotatable threaded connection, the connection head or display can be loosened and adjusted to the desired position.
With a combination of a model TR21-A or TR22-A resistance thermometer, the connection head is removable along with the measuring insert. This enables the thermometer to be calibrated along with the complete measuring chain, i.e. without disconnecting the electrical connections. In addition, this avoids having to open the process, and thus the risk of contamination is minimised.
Fig. left: Welding ball process connection Fig. right: VARINLINE ® process connection
Fig. left: Clamp process connection with G ⅜" Fig. right: VARINLINE ® process connection with G ⅜"
Special features
- Materials and surface finish quality in accordance with the standards of hygienic design
- Fully welded
- Can be combined with models TR21-A and TR22-A electrical resistance thermometers, measuring insert exchangeable
- Can be combined with mechanical thermometers, resistance thermometers and DiwiTherm ®
Identification
| Model | TW22 |
| Product family | TW |
| Subcategory | Protection tube |
Measuring range
| Temperature ranges | −200…+150 °C |
Process conditions
| Process connection | ClampVARINLINE®Union nut DIN 11851Aseptic threaded pipe connection DIN 11864-1Aseptic flange DIN 11864-2Aseptic clamp connection DIN 11864-3Union nut SMSWelding ballBall-type compression fittingCollar-type compression fittingIngold connectionProcess connection, straightNEUMO BioControl® |
| Process temperature | ≤ +150 °C |
Materials
| Probe material | Stainless steel 1.4435 (316L, UNS S31603) |
| Thermowell material | Stainless steel 1.4435 (316L, UNS S31603), stainless steel (not explicitly specified, standard for hygienic design), 1.4435 (316L, UNS S31603) |
Operating environment
| IP rating | IP68 |
Certifications and approvals
| Certifications | EAC3-AEHEDG |
Additional details
| Thermowell | Yes |
| Thermowell form | Straight |
| Datasheet languages | EN, DE |
Tables from datasheet
Neck tube
| Neck tube lengthM | 85 mm[3.35 in] | |
|---|---|---|
| Further neck tube lengths on request | ||
| Neck tube diameter | ||
| Models TR21-A or TR22-A | To DN 20 | 9 mm[0.35 in] per DIN 11851, milk thread fitting: 12 mm[0.5 in] |
| From DN 25 | 12 mm[0.5 in] | |
| Models TG54, 55, 73 orTR75 (DiwiTherm ® ) | Same diameter as the protection tube diameter |
| Process connection | |
|---|---|
| Type of process connection | ■ Clamp ■ VARINLINE ® ■ NEUMOBioControl ® ■ Union nut DIN 11851 ■ Aseptic threaded pipe connection DIN 11864-1 ■ Aseptic flange DIN 11864-2 ■ Aseptic clamp connection DIN 11864-3 ■ Union nut SMS ■ Process connection, straight ■ Welding ball ■ Ball-type compression fitting ■ Collar-type compression fitting |
| Connection to thermometer | |
| In combination with model TR21-A | G⅜"fixed |
| In combination with model TR22-A | ■ M24 x 1.5 pressure screw (rotatable) ■ ½NPT, fixed |
| In combination with modelsTG54 or 55 | ■ M24 x 1.5 pressure screw (rotatable) ■ G½female 1) ■ ½NPTfemale 1) |
| In combination with models 73 (design 3 / union nut) orTR75 (DiwiTherm ® ) | M24 x 1.5 pressure screw (rotatable) |
Process connection
| Protection tube diameter | |||
|---|---|---|---|
| Models TR21-A or TR22-A | ■ Ø6mm[0.24 in] for Ø3mm[0.12 in] probes ■ Ø6mm[0.24 in] tapered to Ø4.5 mm[0.18 in] for Ø3mm[0.12 in] probes (fast response) ■ Ø4.5 mm[0.18 in] for Ø3mm[0.12 in] probes (fast response, only insertion length U ≤ 25 mm[0.98 in]) | ||
| Models TG54, 55, 73 orTR75 (DiwiTherm ® ) | ■ Ø8x0.9 mm[0.31 x 0.04 in] for Ø6mm[0.24 in] probes ■ Ø12 x 1.5 mm[0.47 x 0.06 in] for Ø8mm[0.31 in] probes | ||
| Insertion length U 1 | ■ 25 mm[1 in] ■ 50 mm[2 in] ■ 75 mm[3 in] ■ 100 mm[4 in] ■ 150 mm[6 in] ■ 200 mm[8 in] | ||
| BioControl ® flow-through housing | see table on page 12 | ||
| Calculating the insertion length of the thermometer | Models TG54, 55 and 73 | Design 2 | L 1 = U 1 (TW22) + M-25 mm[0.98 in] |
| Design 3 | L 1 = U 1 (TW22) + M-5mm[0.20 in] | ||
| ModelTR75 | A(l 1 ) or A(U 2 ) = U 1 (TW22) + M(TW22) - 15 mm[0.59 in] | ||
| Model TR21-A | L 1 = U 1 2) +M 3) | ||
| TR22-A | Sensor length l 5 = U 1 2) +M 4) + 10 mm[0.39 in] | ||
| Surface roughness of wetted parts | ■ R a < 0.76 µm (SF3 per ASME BPE) ■ R a < 0.38 µm (SF4 per ASME BPE) | ||
| Sealing combination (option) | Transition from the connection head to the protection tube is effected via an optional sealing combination (polyurethane) of flat gasket and wiper | ||
| ■ Permanently prevents the penetration and depositing of humidity and impurities in this area (IP68) ■ Simplifies cleaning considerably (in combination with the patented BVS head and the hygienic cable gland, an easy to clean and hygienic measuring location results, even in areas which are not in contact with the product) | |||
| Logo | Description | Region |
|---|---|---|
| EAC Pressure equipment directive | Eurasian Economic Community | |
| ® | 3-A 1) Sanitary Standard | USA |
| JANUARY 2019 TYPE EL CLASS I | EHEDG 1) Hygienic Equipment Design | European Union |
View all (13)
| Certificates | ||
|---|---|---|
| Certificates | ■ 2.2 test report ■ 3.1 inspection certificate ■ Manufacturer's declaration regarding regulation (EC) 1935/2004 ■ Certificate of the surface roughness of wetted parts | |
| Hygienic certificates | 3-A approval | EHEDG approval |
| Clamp | Yes | Yes |
| VARINLINE | Yes | Yes |
| BioControl | Yes | No |
| DIN 11851 | Yes 1) | Yes 1) |
| DIN 11864-1 | Yes | Yes |
| DIN 11864-2 | Yes | Yes |
| DIN 11864-3 | Yes | Yes |
| Welding ball | Yes | No |
| Compression fitting | No | No |
| SMS | No | No |
| Process connection | Nominal width in mm/inch | PN in bar | Dimensions inmm | Weight in kg |
|---|---|---|---|---|
| Ø D | ||||
| DIN 32676 for pipes per DIN 11866 row A 2) | DN 10 ... 20 | 25 | 34.0 | 0.2 |
| DN 25 ... 40 | 25 | 50.5 | 0.3 | |
| DN 50 | 16 | 64.0 | 0.4 | |
| DIN 32676 for pipes per DIN 11866 row B | 13.5 ... 17.2 | 25 | 25.0 | 0.2 |
| 21.3 ... 33.7 | 25 | 50.5 | 0.3 | |
| 42.4 ... 48.3 | 16 | 64.0 | 0.3 | |
| DIN 32676 for pipes per DIN 11866 row C | ½" ...¾" | 25 | 25.0 | 0.2 |
| 1" ... 1 ½" | 25 | 50.5 | 0.3 | |
| 2" | 16 | 64.0 | 0.4 | |
| Tri-Clamp | ½" ...¾" | 13.8 | 25.0 | 0.2 |
| 1" ... 1 ½" | 13.8 | 50.5 | 0.3 | |
| 2" | 13.8 | 64.0 | 0.4 | |
| 2 ½" | 13.8 | 77.5 | 0.4 | |
| 3" | 13.8 | 91.0 | 0.5 | |
| 4" | 13.8 | 119.0 | 0.5 |
| Process connection | Nominal | PN in bar | Dimensions inmm | Weight in kg | |||
|---|---|---|---|---|---|---|---|
| width inmm | Ø D | Ø d | H | h | |||
| Form B | DN 10, DN 15 | 25 | 31 | 52.7 | 20 | 13.65 | 0.3 |
| Form F | DN 25, DN 32 | 25 | 50 | 66.0 | 18 | 12.30 | 0.4 |
| Form N | DN 40, DN 50 | 25 | 68 | 84.0 | 18 | 12.30 | 0.6 |
| Nominal width inmm | PN in bar | Dimensions inmm | Weight in kg | |||
|---|---|---|---|---|---|---|
| Ø d 6 | G | Ø D | g | |||
| DN 20 | 40 | 36.5 | RD 44 x 1/6 | 54 | 8 | 0.40 |
| DN 25 | 40 | 44.0 | RD 52 x 1/6 | 63 | 10 | 0.50 |
| DN 32 | 40 | 50.0 | RD 58 x 1/6 | 70 | 10 | 0.60 |
| DN 40 | 40 | 56.0 | RD 65 x 1/6 | 78 | 10 | 0.80 |
| DN 50 | 25 | 68.5 | RD 78 x 1/6 | 92 | 11 | 0.90 |
| Nominal width of pipe | Nominal pressure in bar | Outer diameter of pipe | Pipe schedule | Inner diameter of pipe | Process connection | Aseptic O-ring | Weight in kg | |||
|---|---|---|---|---|---|---|---|---|---|---|
| DN / OD | PN | s | Ø D | G | h | k | ||||
| DIN 11866 row A or metric | ||||||||||
| 10 | 40 | 13 | 1.5 | 10 | 38 | RD 28 x 1/8 | 9 | 18 | 12 x 3.5 | 0.2 |
| 15 | 40 | 19 | 1.5 | 16 | 44 | RD 34 x 1/8 | 9 | 18 | 18 x 3.5 | 0.2 |
| 20 | 40 | 23 | 1.5 | 20 | 54 | RD 44 x 1/6 | 10 | 20 | 22 x 3.5 | 0.25 |
| 25 | 40 | 29 | 1.5 | 26 | 63 | RD 52 x 1/6 | 12 | 21 | 28 x 3.5 | 0.4 |
| 32 | 40 | 35 | 1.5 | 32 | 70 | RD 58 x 1/6 | 13 | 21 | 34 x 5 | 0.45 |
| 40 | 40 | 41 | 1.5 | 38 | 78 | RD 65 x 1/6 | 13 | 21 | 40 x 5 | 0.55 |
| 50 | 25 | 53 | 1.5 | 50 | 92 | RD 78 x 1/6 | 14 | 22 | 52 x 5 | 0.7 |
| DIN 11866 row B or ISO | ||||||||||
| 8 (13.5) | 40 | 13.5 | 1.6 | 10.3 | 38 | RD 28 x 1/8 | 9 | 18 | 12 x 3.5 | 0.2 |
| 10 (17.2) | 40 | 17.2 | 1.6 | 14 | 44 | RD 34 x 1/8 | 9 | 18 | 16 x 3.5 | 0.2 |
| 15 (21.3) | 40 | 21.3 | 1.6 | 18.1 | 54 | RD 44 x 1/6 | 10 | 20 | 20 x 3.5 | 0.3 |
| 20 (26.9) | 40 | 26.9 | 1.6 | 23.7 | 63 | RD 52 x 1/6 | 12 | 21 | 26 x 3.5 | 0.4 |
| 25 (33.7) | 40 | 33.7 | 2 | 29.7 | 70 | RD 58 x 1/6 | 13 | 21 | 32 x 5 | 0.5 |
| 32 (42.4) | 25 | 42.4 | 2 | 38.4 | 78 | RD 65 x 1/6 | 13 | 21 | 40.5 x 5 | 0.6 |
| 40 (48.3) | 25 | 48.3 | 2 | 44.3 | 92 | RD 78 x 1/6 | 14 | 22 | 46.6 x 5 | 0.7 |
| DIN 11866 row C or ASME BPE | ||||||||||
| 1/2" | 40 | 12.7 | 1.65 | 9.4 | 38 | RD 28 x 1/8 | 9 | 18 | 12 x 3.5 | 0.2 |
| 3/4" | 40 | 19.05 | 1.65 | 15.75 | 44 | RD 34 x 1/8 | 9 | 18 | 18 x 3.5 | 0.2 |
| 1" | 40 | 25.4 | 1.65 | 22.1 | 63 | RD 52 x 1/6 | 12 | 21 | 24 x 3.5 | 0.4 |
| 1 1/2" | 40 | 38.1 | 1.65 | 34.8 | 78 | RD 65 x 1/6 | 13 | 21 | 37 x 5 | 0.6 |
| 2" | 25 | 50.8 | 1.65 | 47.5 | 92 | RD 78 x 1/6 | 14 | 22 | 50 x 5 | 0.7 |
| Process connection | Nominal width inmm | PN in bar | Dimensions inmm | Weight in kg | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| b 1 | b 2 | Ø d 5 | Ø d 6 | Ø d 10 | Ø d 11 | Ø d 13 | Aseptic O-ring | ||||
| Flange with notch | DN 10 | 25 | - | 10 | 37 | - | 54 | 22.4 | 4xØ9 | 12 x 3.5 | 0.2 |
| DN 15 | 25 | - | 10 | 42 | - | 59 | 28.4 | 4xØ9 | 18 x 3.5 | 0.25 | |
| DN 20 | 25 | - | 10 | 47 | - | 64 | 32.4 | 4xØ9 | 22 x 3.5 | 0.3 | |
| DN 25 | 25 | - | 10 | 53 | - | 70 | 38.4 | 4xØ9 | 28 x 3.5 | 0.1 | |
| DN 32 | 25 | - | 10 | 59 | - | 76 | 47.7 | 4xØ9 | 34 x 5 | 0.4 | |
| DN 40 | 25 | - | 10 | 65 | - | 82 | 53.7 | 4xØ9 | 40 x 5 | 0.5 | |
| DN 50 | 16 | - | 10 | 77 | - | 94 | 65.7 | 4xØ9 | 52 x 5 | 0.6 | |
| Flange with groove | DN 10 | 25 | 11.5 | - | 37 | 22.3 | 54 | - | 4xØ9 | 12 x 3.5 | 0.25 |
| DN 15 | 25 | 11.5 | - | 42 | 28.3 | 59 | - | 4xØ9 | 18 x 3.5 | 0.3 | |
| DN 20 | 25 | 11.5 | - | 47 | 32.3 | 64 | - | 4xØ9 | 22 x 3.5 | 0.3 | |
| DN 25 | 25 | 11.5 | - | 53 | 38.3 | 70 | - | 4xØ9 | 28 x 3.5 | 0.4 | |
| DN 32 | 25 | 11.5 | - | 59 | 47.6 | 76 | - | 4xØ9 | 34 x 5 | 0.45 | |
| DN 40 | 25 | 11.5 | - | 65 | 56.6 | 82 | - | 4xØ9 | 40 x 5 | 0.6 | |
| DN 50 | 16 | 11.5 | - | 77 | 65.6 | 94 | - | 4xØ9 | 52 x 5 | 0.7 |
| Process connection | Nominal width inmm | PN in bar | Dimensions inmm | Weight in kg | ||||
|---|---|---|---|---|---|---|---|---|
| Ø d 6 | Ø d 10 | Ø d 11 | h | Aseptic O-ring | ||||
| Clamp with notch | DN 10 | 40 | - | 34 | 22.4 | 10 | 12 x 3.5 | 0.2 |
| DN 15 | 40 | - | 34 | 28.4 | 10 | 18 x 3.5 | 0.2 | |
| DN 20 | 40 | - | 50.5 | 32.4 | 10 | 22 x 3.5 | 0.3 | |
| DN 25 | 40 | - | 50.5 | 38.4 | 10 | 28 x 3.5 | 0.3 | |
| DN 32 | 40 | - | 50.5 | 47.7 | 10 | 34 x 5 | 0.3 | |
| DN 40 | 40 | - | 64 | 53.7 | 10 | 40 x 5 | 0.4 | |
| DN 50 | 25 | - | 77.5 | 65.7 | 10 | 52 x 5 | 0.5 | |
| Clamp with groove | DN 10 | 40 | 22.3 | 34 | - | 11.5 | 12 x 3.5 | 0.2 |
| DN 15 | 40 | 28.3 | 34 | - | 11.5 | 18 x 3.5 | 0.2 | |
| DN 20 | 40 | 32.3 | 50.5 | - | 11.5 | 22 x 3.5 | 0.3 | |
| DN 25 | 40 | 38.3 | 50.5 | - | 11.5 | 28 x 3.5 | 0.3 | |
| DN 32 | 40 | 47.6 | 50.5 | - | 11.5 | 34 x 5 | 0.3 | |
| DN 40 | 40 | 53.6 | 64 | - | 11.5 | 40 x 5 | 0.4 | |
| DN 50 | 25 | 65.6 | 77.5 | - | 11.5 | 52 x 5 | 0.5 |
| Case size | Nominal width of pipe | PN in bar | Dimensions inmm | Weight in kg | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| U 1 | Ø d 4 | Ø D | f | b | Ø k | Ø d 2 | ||||
| Size 25 | DN 8 | 16 | 5 | 30.5 | 64 | 11 | 20 | 50 | 4xØ7 | 0.4 |
| DN 10 | 16 | 6 | 30.5 | 64 | 11 | 20 | 50 | 4xØ7 | 0.4 | |
| DN 15 | 16 | 9 | 30.5 | 64 | 11 | 20 | 50 | 4xØ7 | 0.4 | |
| DN 20 | 16 | 11 | 30.5 | 64 | 11 | 20 | 50 | 4xØ7 | 0.4 | |
| Size 50 | DN 25 | 16 | 15 | 50.0 | 90 | 17 | 27 | 70 | 4xØ9 | 0.8 |
| DN 40 | 16 | 20 | 50.0 | 90 | 17 | 27 | 70 | 4xØ9 | 0.8 | |
| DN 50 | 16 | 25 | 50.0 | 90 | 17 | 27 | 70 | 4xØ9 | 0.8 | |
| DN 65 | 16 | 35 | 50.0 | 90 | 17 | 27 | 70 | 4xØ9 | 0.8 | |
| DN 80 | 16 | 45 | 50.0 | 90 | 17 | 27 | 70 | 4xØ9 | 0.8 | |
| DN 100 | 16 | 55 | 50.0 | 90 | 17 | 27 | 70 | 4xØ9 | 0.8 | |
| Size 65 | DN 40 | 16 | 20 | 68.0 | 120 | 17 | 27 | 95 | 4 x Ø11 | 1.4 |
| DN 50 | 16 | 25 | 68.0 | 120 | 17 | 27 | 95 | 4 x Ø11 | 1.4 | |
| DN 65 | 16 | 35 | 68.0 | 120 | 17 | 27 | 95 | 4 x Ø11 | 1.4 | |
| DN 80 | 16 | 45 | 68.0 | 120 | 17 | 27 | 95 | 4 x Ø11 | 1.4 | |
| DN 100 | 16 | 55 | 68.0 | 120 | 17 | 27 | 95 | 4 x Ø11 | 1.4 |
| Nominal width in inch | PN in bar | Dimensions inmm | Weight in kg | ||||
|---|---|---|---|---|---|---|---|
| Ø D | Ø d 2 | B | l 2 | G | |||
| 1" | 40 | 51 | 35.5 | 25 | 3.5 | RD 40 x 1/6 | 0.4 |
| 1½" | 40 | 74 | 55.0 | 25 | 4.0 | RD 60 x 1/6 | 0.8 |
| 2" | 40 | 84 | 65.0 | 26 | 4.0 | RD 70 x 1/6 | 1.0 |
Industry
Chemistry / Pharma
Bio and pharmaceutical industry, production of active ingredients
Industry
Food industry
Sanitary applications · Food and beverage industry
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