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721-734/771-781 Series

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721-734/771-781 Series

Aerospace

The model 721 and 731 Gas Filled Temperature Switch has a flexible thermal system and is suitable for setpoints between -50°C and 300°C with maximum working temperatures up to 310°C

 

Key Features

Better than 1% set-point repeatability

  • Users can expect a set-point repeatability performance better than 1% on all configurations with some configurations being significantly better.

Performance Series

  • Fixed Deadband
  • The model 721 and 731 Gas Filled Temperature Switch has a flexible thermal system and is suitable for setpoints between -50°C and 300°C with maximum working temperatures up to 310°C.

Performance Series

  • Adjustable Deadband
  • The model 722 and 723 Gas Filled Temperature Switch has a flexible thermal system and is suitable for setpoints between -50°C and 300°C with maximum working temperatures up to 310°C

Performance Series

  • Adjustable Deadband
  • The model 732 and 733 Vapour Pressure Temperature Switch has a rigid stem thermal system and is suitable for setpoints between -50°C and 120°C with maximum working temperatures up to 130°C

Performance Series

  • Hi-Lo Switching
  • The model 734 Vapour Pressure Temperature Switch has a rigid stem thermal system and is suitable for setpoints between -50°C and 120°C with maximum working temperatures up to 130°C

Performance Series

  • Fixed Deadband
  • The model 771 Vapour Pressure Temperature Switch has a flexible thermal system and is suitable for setpoints between -50°C and 150°C with maximum working temperatures up to 250°C

Performance Series

  • Adjustable Deadband
  • The model 772 and 773 Vapour Pressure Temperature Switch has a flexible thermal system and is suitable for setpoints between -50°C and 150°C with maximum working temperatures up to 250°C

Performance Series

  • Hi-Lo Switching
  • The model 774 Vapour Pressure Temperature Switch has a flexible thermal system and is suitable for setpoints between -50°C and 150°C with maximum working temperatures up to 250°C

Performance Series

  • Hi-Lo Switching
  • The model 781 Gas Filled Temperature Switch has a flexible thermal system and is suitable for setpoints between -50°C and 300°C with maximum working temperatures up to 310°C

 

Product Catalogue Request a Quote

Extensive range of options

  • The Performance Series switches are available with an extensive range of materials, process connections, switch types, electrical entries, etc and offer customers many millions of different possible configurations.
  • Installed in a wide range of applications from nuclear power plants to offshore oil rigs, the Performance Series’ long experience in the field offers customers the reassurance that they can be relied upon to survive the test of time in the harshest environments.
  • Designed in the mid-1970s and developed over subsequent years, the Performance Series switch range offers users the broadest range of options, the highest levels of set-point repeatability and the confidence of long term performance that a mature product such as this can prove.
  • The model 721 and 781 Performance Series Gas Filled Temperature switches comprise an armoured capillary attached to the sensing bulb via a semi-rigid extension on which a compression gland slides to enable various depths of thermowell (pocket) to be accomodated. This sensor is coupled to the microswitch via a precision stainless steel mechanism, the combination of which helps deliver the market leading performance customers can expect from the Series.
  • Ranges available up to 300°C
  • The model 731 Performance Series Vapour Pressure Temperature Switches comprise of a rigid stem thermal system upon which a compression gland slides to enable various depths of thermowell (pocket) to be accomodated. This sensor is coupled to the microswitch via a precision stainless steel mechanism, the combination of which helps deliver the market leading performance customers can expect from the Series.
  • Weatherproof IP66 enclosures in zinc alloy or stainless steel
  • ATEX and IECEx Ex d Flameproof models available
  • Environmentally and Hermetically sealed switch options
  • Set-point adjustable over the full range against a calibrated scale with tamperproof adjuster

 

 

 

 

 

 

 

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