TW11 Protection tube for temperature sensors

Designed for use in the fine chemicals industry and generally for almost all industrial processes

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• Measuring principle

  Fabricated Thermowell

• Characteristic / Application

  metric style
  DIN 43772 Form 2/3
  threaded process connection
  without neck

• Head connection

  external thread:
  M24 x 1.5
  1/2" NPT

• Maximum standard immersion length

  4.000 mm (157,48")

• Max. immersion length on request

  10.000 mm (393,7")

• Process connection

  thread:
  G3/8"
  G1/2"
  G3/4"
  1/2" NPT
  3/4" NPT
  R1/2"
  R3/4"
  R1"
  M20 x 1.5

• Thermowell root diameter

  9 mm (0,35")
  11 mm (0,43")
  12 mm (0,47")
  14 mm (0,55")
  15 mm (0,59")

• Medium contact material

  1.4401 (316)
  1.4404 (316L)
  1.4571 (316Ti)

• Wetted part finishing (Ra)

  < 0.8 ìm (31.50 ìin)

• Tip shape

  straight
  reduced
  tapered

• Temperature range

  -200...700 °C (-328...1.292 °F)

• Max. process pressure (static)

  50 bar (725 psi)

• Max. process pressure at 400 °C

  depends on process connection

This protection tube is an important component for temperature measurement points for almost all industrial processes, especially for fine chemicals industries. It is used to protect the measuring insert or sensor elements from aggressive process media, high pressures and flow rates from the temperature sensor itself and thereby enables the thermometer to be exchanged during operation.

TW11 protection tubes are designed for the use in the fine chemicals industry but can also be used for generic applications.

• Tip of the thermowell with a reduced diameter or tapered for a faster response time

• Customized immersion length

• Surface finishing Ra < 0.8 μm

• SS 316L/1.4404 and SS 316Ti/1.4571 for the "wetted" parts

• The common threaded process connections are supplied as standard; others are available on request

• Material certification (3.1.B)

• Test with penetrant liquids on welds