Endress+Hauser TA540 Specifications

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Technical Information
Industrial thermowell Omnigrad TA540
Heavy duty - General purpose From pipe - Threaded or flanged weld type Also ENI TUB 1/2/3/4
TA540 is designed for use with resistance and thermocouple thermometers in heavy duty applications.

Benefits at a glance

• TA540 is an industry standard thermowell with a cylindrical extension.
• The process connection can either be threaded or flanged weld.
• The thermowell stem shape can be straight or reduced for fast response time.
• Extension, immersion length and total length can be chosen according to process requirements.
• A wide choice of pipe sizes, materials and process connections is available.
• Special versions can be manufactured according to specification.
TI00166T/09/EN 71197161
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Technical data

Pipe • Standard reference: ENI TUB 1, ENI TUB 2, ENI TUB 3, ENI TUB 4

• Cylindrical extension: Ø35 mm (1.38 in)
• Thermowell diameter: ¼" sch. 40/80, ½" sch. 40/80, ¾" sch. 40/80
Insert diameter: 6 mm (0.25 in) Material: AISI316/W.1.4404, AISI446/W.1.4749

Connection to thermometer Threaded: ½" NPT, ¾" NPT - female, M20x1.5

TA540

Process connection

Threaded or flanged
Thread ½" NPT ¾" NPT 1" NPT 1½" NPT M20x1.5
Engagement length
Flange type ANSI blind flange, DIN 2527/2526 Form C, UNI6000
Flange material AISI 316, A 105
Flange welding double side standard weld
8 mm (0.31 in) 8.5 mm (0.33 in) 10 mm (0.39 in) 10.5 mm (0.41 in) 15 mm (0.6 in)
Tip • Tip: straight, rounded or with reduced diameter
• Bottom shape: flat
• Bottom thickness: 5 mm (0.20 in)
2 Endress+Hauser
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TA540

Mechanical construction

Thermowell dimensions in mm (in):
1 Thermowell without process connection 2 Thermowell with NPT thread as process connection 3 Thermowell with M20 thread as process connection 4 Thermowell with flange as process connection
Pos.-No. Description
A Total length (A=T+L)
L Immersion length
ØQ1 Diamter thermowell tip, specification see product structure
R Thermowell tip length, specification see product structure
T Extension, specification see product structure

Gasket For cylindrical threads (M20x1.5) a gasket must be used to seal the connection.

Possible gasket dimension:
• M20x1.5: gasket 24x20.3x1.5 copper
The material of the gasket has to be resistant against the process medium. The gasket is not part of the delivery.
A0016111
Endress+Hauser 3
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Ordering information

Instruments International
Endress+Hauser Instruments International AG Kaegenstrasse 2 4153 Reinach Switzerland
Tel.+41 61 715 81 00 Fax+41 61 715 25 00 www.endress.com info@ii.endress.com
Detailed ordering information is available from the following sources:
•In the Product Configurator on the Endress+Hauser website: www.endress.com this product
• From your Endress+Hauser Sales Center: www.endress.com/worldwide
Product Configurator - the tool for individual product configuration:
• Up-to-the-minute configuration data
• Depending on the device: Direct input of measuring point-specific information such as measuring range or operating language
• Automatic verification of exclusion criteria
• Automatic creation of the order code and its breakdown in PDF or Excel output format
• Ability to order directly in the Endress+Hauser Online Shop
Select countryInstruments → Select device→ Product page function: Configure
TI00166T/09/EN/02.12 71197161 FM 9.0
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