TW40

On order

WIKA · Temperature measurement · Family TW

Protection tube with flange

Name: Protection tube with flange
Brand: WIKA
SKU: TW40

Version per DIN 43772 form 2F, 3F

Price

On request

Depends on configuration

Request a quote

+38 (067) 285-77-70·info@avigan.com.uaViberTelegram

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 protection tube 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 protection tubes, and those with flange connections.

Furthermore, one can differentiate between protection tubes and thermowells. Protection tubes are constructed from a tube, that is closed at the tip by a welded solid tip. Thermowells are manufactured from solid bar stock.

Special features

For highly corrosion-resistant coating (models TW40-8, TW40-9)
Good price/performance ratio for special materials
Fast-response design (models TW40-9, TW40-E)

Configurator · Step by step

Build a TW40 for your task

The article number is assembled automatically. If unsure — ask an engineer; we'll match the line's parameters.

Step 1 of 3

Configuration structure· click a highlighted segment to jump to that parameter

225 mm285 mm315

Your configuration

Thermowell styleForm 2F (straight)
MaterialStainless steel 1.4571
Tube dimensionTube 9x1 mm for sensor 6 mm (DIN 43772)
Connection to thermometer [N]M24 x 1.5 running nut
Flange sizeEN 1092-1 DN 25
Pressure ratingPN 40
Flange faceEN 1092-1 Form B1
Insertion length [U1]—
Total length [L]—
Certificates—

AI suggestion by parameters

Finish your configuration

Select every option to submit the request.

Send request

Identification

Model	TW40
Product family	TW
Subcategory	Protection tube

Process conditions

Process connection	Flanges to EN 1092-1Flanges to DIN 2527Flanges to ASME B16.5M24 x 1.5G ½½ NPTM20 x 1.5M24 x 1.5 (rotatable threaded connection, male nut)G½ female thread½NPT female threadM20 x 1.5 female threadG1/21/2 NPT
Process temperature	≤ +600 °C

Materials

Thermowell material

Stainless steel 1.4571, Alloy C4, Alloy C276, Alloy 400, Titanium grade 2, Tantalum

Operating environment

Weight

1.39 kg

Additional details

Probe length	50 mm
Probe diameter	7 mm
Thermowell	Yes
Thermowell form	2F/3F
Datasheet languages	EN, DE

Tables from datasheet

Basic information
Protection tube form	■ Straight ■ Tapered design
Design
DesignTW40-8	Per DIN 43772 form 2F (straight tube)
DesignTW40-9	Per DIN 43772 form 3F (tapered tube)
DesignTW40-D	Per DIN 43772 form 2F, special materials
DesignTW40-E	Per DIN 43772 form 3F, with tantalum cover
Material (wetted)	■ Stainless steel 1.4571 ■ Alloy C4 ■ Alloy C276 ■ Alloy 400 ■ Titanium grade 2 ■ Tantalum
Other materials on request
Coating (only designs TW40-8, TW40-9)	■ PFA Layer thickness min. 0.4 mm[0.015 in] (standard) or min. 0.6 mm[0.024 in] (special design) ■ ECTFE (Halar ® ) Layer thickness min. 0.6 mm[0.024 in]

Process connection
Type of process connection	Flanges to valid national or international standards like e.g.EN 1092-1, DIN 2527, ASME B16.5
Flange disc (design TW40-E, TW40-D)	■ Per EN 1092-1 with sealing face form B1 ■ Per DIN 2527 with sealing face form C per DIN 2526 ■ Per ASME B16.5 with sealing face form RF (smooth sealing face with tantalum)
Connection to thermometer	■ M24 x 1.5 (rotatable threaded connection, male nut) ■ G½female thread ■ ½NPTfemale thread ■ M20 x 1.5 female thread
Bore size Ø d 1	Tube	Inner diameter	For probes
DesignTW40-8	9 x 1 mm[0.35 x 0.04 in]	7.0 mm[0.28 in]	6 mm[0.24 in]
11 x 2 mm[0.43 x 0.08 in]	7.0 mm[0.28 in]	6 mm[0.24 in]
12 x 1.5 mm[0.47 x 0.06 in]	9.0 mm[0.35 in]	8 mm[0.31 in]
12 x 2.5 mm[0.47 x 0.09 in]	7.0 mm[0.28 in]	6 mm[0.24 in]
14 x 2.5 mm[0.55 x 0.10 in]	9.0 mm[0.35 in]	8 mm[0.31 in]
15 x 2 mm[0.59 x 0.08 in]	11.0 mm[0.43 in]	10 mm[0.4 in]
DesignTW40-9	12 x 2.5 mm[0.47 x 0.09 in] to 9 mm[0.35 in]	6.1 mm[0.24 in]	6 mm[0.24 in]
DesignTW40-D	13.7 x 2.2 mm[0.54 x 0.09 in]	9.3 mm[0.37 in]	6 mm[0.24 in] or 8 mm[0.31 in]
DesignTW40-E	11 x 2 mm[0.43 x 0.08 in] with tantalum cover	7.0 mm[0.28 in]	6 mm[0.24 in]
15 x 3 mm[0.59 x 0.12 in] with tantalum cover	9.0 mm[0.35 in]	8 mm[0.31 in]
12 x 2.5 mm[0.47 x 0.09 in] to 9 mm[0.35 in] with tantalum cover	6.1 mm[0.24 in]	6 mm[0.24 in]
Insertion length U 1	50 ... 3,500 mm[1.9 ... 137.8 in]

Process connection

length L		Overall
DesignsTW40-8,TW40-D 1) ,TW40-E 1)	Insertion length U 1 + 80 mm[3.15 in]
DesignTW40-9	Insertion length U 1 + 82 mm[3.23 in]
Suitable stem length l 1 (dial thermometer)
Connection design S, 4, 4.1, 5, 6.1, 6.2, 6.3 and 7	Parallel thread l 1 = L	- 10 mm[0.4 in] or l 1 = U 1 + M- 10 mm[0.4 in]
Tapered thread l 1 =	U 1 + M- 2 mm[0.08 in]
Connection design 2	l 1 = L - 30 mm[1.2 in] or l 1 = U 1 + M- 30 mm[1.2 in]
Connection design 3	l 1 = L - 10 mm[0.4 in] or l 1 = U 1 + M- 10 mm[0.4 in]
Sealing face roughness	Design	AARH in µinch Ra in µm	Rz in µm
ASME B16.5	Stock finish	125 ... 250 3.2 ... 6.3	-
Smooth finish	< 125 < 3.2	-
RTJ	< 63 < 1.6	-
Groove/tongue	< 125 < 3.2	-
EN 1092-1	Form B1	- 3.2 ... 12.5	12.5 ... 50
Form B2	- 0.8 ... 3.2	3.2 ... 12.5
DIN 2527	Form C	- -	40 ... 160
Form E	- -	< 16

Operating conditions

Max. process temperature, process pressure

Depending on: ■ Load diagram DIN 43772 ■ Protection tube design - Dimensions - Material - Coating ■ Process conditions - Flow rate - Density of medium

Wake frequency calculation (option)

The calculation in accordance with ASME PTC 19.3 TW-2016 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 can be carried out independently using an online tool or as a WIKA engineered service (subject to charges). → For further information, see Technical information IN 00.15 'Wake frequency

calculation'.

View all (7)

Dimensions in mm[in]	Weight in kg [lbs]
Ø F 1 x S	Flange DN 25 PN 16 ... 40 U 1 = 225 mm[8.86 in]
9 x 1 [0.35 x 0.04]	1.39 [3.06]
11 x 2 [0.43 x 0.08]	1.55 [3.42]
12 x 1,5 [0,47 x 0,06]	1,61 [3,55]
14 x 2.5 [0.55 x 0.1]	1.71 [3.77]
12 x 2.5 [0.47 x 0.09]	1.64 [3.62]
15 x 2 [0.59 x 0.08]	1.41 [3.11]
9.3 x 2.2 [0.36 x 0.09]	1.70 [3.75]

Additional weight with other flanges

DN 40	PN 16 ... 40	+0.76 kg [+1.68 lbs]
DN 50	PN 16 ... 40	+1.63 kg [+3.59 lbs]
1"	150 lbs	-0.46 kg [-1.01 lbs]
1"	300 lbs	+0.04 kg [+0.09 lbs]
1"	600 lbs	+0.22 kg [+0.49 lbs]
1 ½"	150 lbs	+0.22 kg [+0.49 lbs]
1 ½"	300 lbs	+1.34 kg [+2.95 lbs]
1 ½"	600 lbs	+1.85 kg [+4.08 lbs]

Dimensions in mm[in]	Weight DN 25 ...225mm [0.98 ... 8.86 in]
Ø F T	Ø F 1 x S	S 1
12 x 0.4 [0.47 x 0.02]	11 x 2 [0.43 x 0.08]	2.5 [0.1]	1.65
16 x 0.4 [0.63 x 0.02]	15 x 3 [0.59 x 0.12]	3.5 [0.14]	1.75
13 x 0.4 [0.51 x 0.02]	12 x 2.5 [0.47 x 0.1]	6 [0.24]	1.70

Protection tube with flange

Description

Special features

Finish your configuration

6 standard articles of family TW