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The model TW22 thermowell is used to adapt thermometers and measuring inserts to the process and protects the sensor against harsh process conditions. The thermowell is mounted to a weld-in nozzle equipped with a respective hygienic connection and is built in pipelines and tanks.
Features
  • Materials and surface finish quality in accordance with the standards of hygienic design. 
  • Fully welded. 
  • Can be combined with models TR21-A and TR22-A electrical resistance thermometers, measuring insert exchangeable . 
  • Can be combined with mechanical thermometers, resistance thermometers and DiwiTherm®.

Specifications

Thermowell Materials (Wetted)

  • Stainless Steel 1.4435 (316L, UNS S31603)

Surface Roughness of Wetted Parts

  • Ra < 0.76 µm (SF3 per ASME BPE)
  • Option:
  • Ra < 0.38 µm (SF4 per ASME BPE)
  • Ra < 0.38 µm Electropolished (SF4 per ASME BPE)

In Combination with Model TR21-A

  • G 3/8” fixed

In Combination with Model TR22-A

  • M24 x 1.5 Male Nut (Rotatable)
  • Option: 1/2” NPT, fixed

In Combination with Models TG54 Oder 55

  • M24 x 1.5 Male Nut (Rotatable)
  • G 1/2 Female
  • 1/2” NPT Female
  • (Option only for Design S (Fixed), Design 2 (Rotatable threaded Connection), Design 4 (Compression Fitting), Design 5 (Union nut and loose threaded Connection)

In Combination with Models 73 (Design 3 / Union Nut) or TR75 (DiwiTherm)

  • M24 x 1.5 Male Nut (Rotatable)

Models TR21-A or TR22-A

  • Ø 4.5 mm for Ø 3 mm Sensors (Quick responding, only insertion length U1 ≤ 25 mm)
  • Ø 6 mm Tapered to Ø 4.5 mm for Ø 3 mm Sensors (Quick responding)
  • Ø 6 mm for Ø 3 mm Sensors

Models TG54, 55, 73 or TR75 (DiwiTherm)

  • Ø 12 x 1.5 mm for Ø 8 mm Sensors
  • Ø 8 x 0.9 mm for Ø 6 mm Sensors

Neck Tube Length M

  • 85 mm

Neck Tube Diameter

  • Models TR21-A or TR22-A
  • Up to DN 20: 9 mm (Except per DIN 11851 (Milk thread Fitting): 12 mm)
  • From DN 25: 12 mm
  • Models TG54, 55, 73 or TR75 (DiwiTherm®)
  • Same diameter as the thermowell diameter

Insertion Length U

  • 25 mm
  • 50 mm
  • 75 mm
  • 100 mm
  • 150 mm
  • 200 mm
  • Option: up to 400 mm according to customer Specification

  • Sanitary applications
  • Food and beverage industry
  • Bio and pharmaceutical industry, production of active ingredients

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