TW251
Protection tube for temperature sensors

The protection tube with built-in compression fitting allows varying types of probes to be applied

TW251

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Specs at a glance

Max. process pressure (static)

50 bar (725 psi)
Maximum standard immersion length

4.000 mm (157,48")
Max. immersion length on request

10.000 mm (393,7")

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Field of application

This protection tube is well fitted with an integrated compression fitting, suitable for different industrial applications including even hygienic applications. By default, it is fitted onto pipes and vessels or tanks where attachment to the process can be threaded or welded. Due to its construction various types of temperature probes, such as compact thermometers as well as assemblies without a protection tube or cable probes, generally with an probe diameter of 6 mm, can be applied.

TW251 is a tube well fitted with an integrated compression fitting, suitable for different industrial applications including hygienic applications.

Benefits

The compression fitting allows for the replacement of the faulty probes without having to suspend the process underway
Different process connections can be selected as standard within the sales structure: Threaded (G ½", G ¼", NPT ½", ...); Weld-in (cylindrical, spheric)
Sleeves for the compression fitting available in PTFE or SS 316
The 3.1.B material certificate (according to standard EN 10204), is selectable directly from the sale structure of the product

Fundamental selection

Simple products
Easy to select, install and operate

Technical excellence

Simplicity

What is FLEX?

Simple products
Easy to select, install and operate

Technical excellence

Simplicity

What is FLEX?

Standard products
Reliable, robust and low-maintenance

Technical excellence

Simplicity

What is FLEX?

High-end products
Highly functional and convenient

Technical excellence

Simplicity

What is FLEX?

Specialized products
Designed for demanding applications

Technical excellence

Simplicity

Variable

What is FLEX?

FLEX selections	Technical excellence	Simplicity
F L E X Fundamental selection Meet your basic measurement needs	Technical excellence	Simplicity
F L E X Lean selection Handle your core processes easily	Technical excellence	Simplicity
F L E X Extended selection Optimize your processes with innovative technologies	Technical excellence	Simplicity
F L E X Xpert selection Master your most challenging applications	Technical excellence	Simplicity Variable

Learn more about the FLEX selections

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Predecessor

TA250

Success stories

Prevent grain dust ignition in bulk tanks & silos

How temperature profiling increases plant safety and product quality in bulk tanks and silos for food storage.
Read the full story
Self-calibrating thermometers in hygienic processes

This white paper explains how self-calibrating thermometers can be used in hygienic process engineering. It details theory and practice as well as application examples. Learn more!
Read the full story
Medical autoclaves

New sensor technology automates recalibrations to reduce risk in batch sterilization. Learn More!
Read the full story
Automated inline self-calibration at Lonza

Automated inline self-calibration at Lonza for full monitoring throughout bioprocess
Read the full story
Iplom enhances catalyst life, process safety and efficiency

Iplom SpA sought to optimize its refining process to extend catalyst life and to increase safety in a hydrodesulfurization (HDS) application through precise 3D temperature profiling.
Read the full story

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Miscellaneous

Product family: Accessories: Bar stock thermowell, Accessories: Pipe thermowell, Accessories: Thermowells

Russian version - 05/2021

New version available in English

Product root: MLTWS01-, TA414-, TA535-, TA540-, TA541-, TA550-, TA555-, TA556-, TA557-, TA560-, TA562-, TA565-, TA566-, TA570-, TA57 1-, TA572-, TA575-, TA576-, TT131-, TT151-, TT411-, TT511-, TW10-, TW11-, TW12-, TW13-, TW15-, TW251-, TW45-, TW47-, TWF11-, TWF16- Region: Eurasian Economic Union Approval agency: EAC Approval number: EAEC RU C-IT.AD85.B.00350/21

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Language:	Russian
Version:	26/05/2021
File size:	1.6 MB
File name:	EAEC RU C-IT.AD85.B.00350_21.pdf

Operating Instruction (BA)

Thermowells

English version - 12/2016

New version available in English

Operating instructions for thermowells for EAC approval

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	EN
01/12/2016

Language:	English
Version:	01/12/2016
File size:	1.3 MB
File name:	BA01469TEN_0116.pdf

13 documents

Technical Information (TI)

Technical information TW251

Technical Information (TI)

English version - 11/2002

New version available in English

Thermowell for temperature sensors
omnigrad TW251
Thermowell for general applications
Integrated compression fitting
Threaded or weld-in process connection

Select other languages, versions and see details Hide selection and details

	EN
01/11/2002

Language:	English
Version:	01/11/2002
File size:	320.9 KB
File name:	TI245ten_1102.pdf

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Operating Instruction (BA)

Thermowells

Operating Instruction (BA)

English version - 12/2016

New version available in English

Operating instructions for thermowells for EAC approval

Select other languages, versions and see details Hide selection and details

	EN
01/12/2016

Language:	English
Version:	01/12/2016
File size:	1.3 MB
File name:	BA01469TEN_0116.pdf

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Special Documentation (SD)

Device viewer

Special Documentation (SD)

English version - 07/2021

New version available in English

Technical documentation in other languages

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Language:	English
Version:	14/07/2021
File size:	478.5 KB
File name:	SD02429R09EN_0121.pdf

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Fields of Activities (FA)

Temperaturmesstechnik

Fields of Activities (FA)

German version - 05/2023

New version available in English

Thermometer und Transmitter für die Prozessindustrie

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Language:	German
Version:	17/05/2023
File size:	17.9 MB
File name:	FA00006Tde_2223_online.pdf

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Fields of Activities (FA)

Temperature measurement

Fields of Activities (FA)

English version - 05/2023

New version available in English

Thermometers and transmitters for the process industry

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Language:	English
Version:	17/05/2023
File size:	18 MB
File name:	FA00006Ten_2223_online.pdf

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Fields of Activities (FA)

Catálogo medición temperatura

Fields of Activities (FA)

Spanish version - 04/2018

New version available in English

Termómetros y transmisores para la industria de proceso

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Language:	Spanish
Version:	20/04/2018
File size:	5.5 MB
File name:	FA00006Tes_Catalogo Temperatura_1818.pdf

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Fields of Activities (FA)

Misura della temperatura

Fields of Activities (FA)

Italian version - 02/2020

New version available in English

Termometri e trasmettitori per l'industria di processo

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Language:	Italian
Version:	17/02/2020
File size:	30.6 MB
File name:	FA00006TIT_2020.pdf

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Fields of Activities (FA)

温度計

Fields of Activities (FA)

Japanese version - 02/2020

New version available in English

プロセス産業向けの温度計
および伝送器

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Language:	Japanese
Version:	17/02/2020
File size:	38.9 MB
File name:	FA00006TJA_2020.pdf

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Fields of Activities (FA)

Mesure de température

Fields of Activities (FA)

French version - 12/2019

New version available in English

Capteurs et transmetteurs de température pour les industries de process

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Language:	French
Version:	20/12/2019
File size:	60.9 MB
File name:	FA00006TFR-Mesure de temperature.pdf

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Manufacturer Declaration

Product family: Accessories: Pipe thermowell

Manufacturer Declaration

English version - 03/2017

New version available in English

Product root: TW251-
Declaration number: HE_00543_01.17
Manufacturer specification: RoHS

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Language:	English
Version:	13/03/2017
File size:	136.3 KB
File name:	HE_00543_01.17 China RoHS TW251.pdf

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Loading more results

TW251Protection tube for temperature sensors

The protection tube with built-in compression fitting allows varying types of probes to be applied

Specs at a glance

Max. process pressure (static)

Maximum standard immersion length

Max. immersion length on request

Field of application

Benefits

Fundamental selection

Predecessor

Success stories

Prevent grain dust ignition in bulk tanks & silos

Self-calibrating thermometers in hygienic processes

Medical autoclaves

Automated inline self-calibration at Lonza

Iplom enhances catalyst life, process safety and efficiency

Measuring principle

Characteristic / Application

Head connection

Maximum standard immersion length

Max. immersion length on request

Process connection

Thermowell root diameter

Medium contact material

Wetted part finishing (Ra)

Tip shape

Temperature range

Max. process pressure (static)

Max. process pressure at 400 °C

Back

Product family: Accessories: Bar stock thermowell, Accessories: Pipe thermowell, Accessories: Thermowells

Thermowells

Technical information TW251

Thermowells

Device viewer

Temperaturmesstechnik

Temperature measurement

Catálogo medición temperatura

Misura della temperatura

温度計

Mesure de température

Product family: Accessories: Pipe thermowell

Back

Spare parts kit sealing PTFE d6mm (5 p)

Spare parts kit sealing d3mm PTFE (5 p)

The unit is not repairable

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TW251
Protection tube for temperature sensors