SR Comfort Air Curtain

The SR includes all knowledge Biddle has gathered the past 60 years with regard to climate separation in a door opening. 

Auto-active control of energy and comfort
The SR ensures high energy savings and a comfortable indoor climate by cleverly combining four technologies. The patented i-sense infrared technology collects the temperature data in the door opening, the automatic CHIPS translates it continuously it into the correct setting and the optimal climate separation is created by means of the Controlled Air strength and rectifier technology.

Intelligent control and monitoring
Biddle has an extensive range of control options: a local control by means of the b-touch, remote monitoring (b-connect) or integration in a Building Management System using the standard integrated Modbus connection. 

  • Features & Benefits

    • Auto-active control of energy and comfort
    • Revolutionary climate separation
    • Remote monitoring
    • Low sound level
  • I-Sense

    The patented i-Sense infrared technology scans the environment around the doorway and collects information on indoor and outdoor temperatures by measuring the exact temperature at floor level. The i-Sense can also detect when the door is closed.

  • Rectifier Grille

    The patented rectifier ensures that the turbulent air from the fans is transformed into a virtually laminar air stream. The air stream reaches the floor with much less air speed than it would in a rectifier-free air curtain, whilst ensuring the
    discharge air stream stays within the building.

  • Controlled Air Strength

    The SR Air Curtain offers six different settings, each with its own discharge width that adapts automatically to the climatic conditions around the doorway. As the air curtain strength increases, the air valve adjusts the discharge width, ensuring optimal climate separation. The air volume and discharge velocity increase only as needed, preventing collision with the floor and maximising heat transfer to warm incoming cold air. This results in enhanced indoor comfort and reduced energy consumption, making the Biddle SR Air Curtain an excellent choice for climate control.


    The CHIPS technology automatically adjusts the discharge velocity, air volume, discharge temperature and heat output. Outside, return air and discharge temperature sensors are used to determine how much heat is required and the bespoke control algorithm ‘translates’ the data into the strength (a combination of air volume and velocity) required for complete climate separation and comfort, negating the need for the user to continually adjust the air curtain’s setting when the inside/outside temperatures and/or weather change.

  • Control options

    • Auto-active control
    • Self-regulating
    • Always in the correct setting
    • Intelligent software
    • b-touch control panel
    • Modbus communication
    • B-Connect monitoring
  • PDF
    CA EN Brochure | SR
  • PDF
    CA EN Manual | SR
  • PDF
    CA EN Modbus Manual


Explore our in-situ images to see how our product can enhance the look and feel of any room.

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