Functions:
- Control of access: Manages the opening
and closing of the pass box doors to ensure that items can be transferred in
and out in an orderly manner while preventing the entry and exit of pollutants
and maintaining the cleanliness of the environment.
- Interlocking function: Usually has an
interlocking mechanism to prevent both doors of the pass box from being opened
simultaneously, avoiding air convection and cross-contamination between
different environments.
- Environmental parameter monitoring and
control: Some pass box controllers can monitor and adjust parameters such as
temperature, humidity and air pressure inside the pass box to meet specific
process requirements.
- Data recording and management: Records
information such as the opening and closing times of the pass box, usage
frequency, and environmental parameter data for traceability and management.
Working principle:
- It generally works based on a combination
of electronic control systems and mechanical components. Sensors are used to
detect the status of the doors, such as whether they are open or closed. The
control system processes the signals from the sensors and controls the
operation of the door motors and locks according to the set rules. For
environmental parameter control, corresponding sensors and control modules are
used to adjust the operation of air conditioning, humidification and other
equipment.
Types:
- Simple manual control type: Operated by
manual buttons or switches, suitable for occasions with low requirements for
automation and cleanliness.
- Intelligent automatic control type:
Equipped with advanced control systems, which can be connected to the overall
clean room control network, and realize remote control, automatic operation and
data networking functions. It is suitable for high-standard clean environments
such as semiconductor manufacturing and biological laboratories.
Applications:
- Semiconductor manufacturing: Used to
transfer wafers and other materials between different clean areas to prevent
contamination.
- Biopharmaceutical: For the transfer of
materials and samples in clean workshops to ensure the sterility of the
production environment.
- Food processing: In some high-standard
food processing workshops, it is used to transfer materials to maintain the
hygiene of the production environment.
- Aerospace and precision instrument
manufacturing: To ensure that components and materials are transferred in a
clean environment to avoid affecting product quality.
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