THERMOWELL FOR RTD & TC

SELECTION OF THERMOWELLs

Material

Thermowell material chosen for an installation is governed by corrosive conditions. Occasionally, thematerial consideration is one of strength rather than acorrosive condition. Consult the pressure-temperature ratings given for each wel ltype for proper selection.

InsertionLength“U”

The distance from the end of thewell to the underside of the thread,or other connection means, designated as “U” is the insertion length. For best accuracy, this length should be long enought opermit the entire temperature sensitive part of the thermocouple to project in to the temperature medium being measured.

Bore Size

The bore size of wells shown as below the most commonly used temperature sensing elements as follows:

Bore Diameter    ---->  Element diameter

          6.0 mm       ---->  6.4 mm

6.6 or 7.0 mm      ---->  6.35 mm  

          8.5 mm      ---->  6.0 mm

         10.0 mm     ---->  9.5 mm

Tapered or Straight Shank

Tapered shank wells provide greater stiffness for the same sensitivity.The hight strength-to-weigh tratio gives these wells higher natural frequency than equivalent length straight shank wells, thus permitting operation at higher fluid velocity.


  • PIPE TW-1.jpg
    PIPE THERMOWELLs 1. Thread Connection 2. Flange Connection WELL & FLANGE MATERIAL available. - S25C, 304SS, 316SS, 304LSS, 316LSS, 310SS, 321SS, 446SS, INCONEL, HAST-C, MONEL, ...

  • Bar Stock TW.jpg
    BAR STOCK THERMOWELL THREAD CONNECTION 1. Straight bar stock 2. Taperedbar stock 3. Stepped bar stock THERMOWELL MATERIAL available. - S25C, 304SS, 316SS, 304LSS, 316LSS, 310SS, 32...

  • Sanitary Thermowell.jpg
    SANITARY THERMOWELL (3-A MARKING) THERMOWELL MATERIAL available. - 304SS, 316SS, 304LSS, 316LSS, 310SS, 321SS, 446SS, INCONEL, HAST-C, MONEL, TITANIUM, TANTALUM, WELL (Out diameter...

  • Bar Stock TW Flange type.jpg
    BAR STOCK THERMOWELL FLANGE CONNECTION 1. Straight Bar Stock (Flange Connection) 2. Tapered Bar Stock (Flange Connection) 3. Stepped Bar Stock (Flange Connection) WELL & FLANGE...

  • Bar Stock TW Welded connection.jpg
    BAR STOCK THERMOWELL WELDED TYPE 1. Straight Bar Stock (Socket Welded type) 2. TaperedBar Stock (Welded in type) 3. Stepped Bar Stock (Socket Welded type) THERMOWELL MATERIAL avail...

  • Van Stone TW.jpg
    VAN STONE THERMOWELL (SHELL STANDARD) THERMOWELL & COVER FLANGE MATERIAL available. - 304SS, 316SS, 304LSS, 316LSS, 310SS, 321SS, 446SS, INCONEL, HAST-C, MONEL, TITANIUM, TANTA...

  • Temp.Element.jpg
    RESISTANCE TEMPERATURE DETECTOR (RTD) The Features Resistance temperature detectors for industrial applica- tions have the following features. 1. Good sensitivity. 2. ...

  • Certificate.jpg
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