Cleanrooms in pharmaceutical, high-tech and food industries

Why pressure monitoring is critical:
In cleanrooms, air cleanliness and contamination control are crucial to safeguard product quality, ensure process reliability, and meet regulatory standards. Pressure differentials help prevent particles, microbes, and airborne contaminants from entering the controlled environment.

  • In pharmaceutical and biotechnology cleanrooms, positive pressure ensures that clean, filtered air flows outward, protecting products from external contamination.
  • In high-tech manufacturing (semiconductors, optics), maintaining stable pressure prevents airborne particles from compromising production quality.
  • In the food industry, pressure control helps maintain hygienic production areas, preventing cross-contamination between zones.

In all these sectors, continuous pressure monitoring is essential to safeguard product quality, meet regulatory requirements (such as ISO 14644), and support succesful customer audits.

Why Choose the ATM420:

  • Continuous monitoring of differential pressure between:
    • Corridor and anteroom/airlock (measured by one differential pressure transmitter)
    • Corridor and isolation room (measured by second differential pressure transmitter)
  • Immediate visual feedback with clear green = safe and red = alarm indicators.
  • Optional audible alarm with adjustable time delay, preventing unnecessary alarms when doors briefly open.
  • Optional slave display inside the airlock, allowing staff to check room status before entering the cleanroom or critical space.
  • Maintenance / cleaning mode – Activated via a secure code, the display switches to grey, indicating the system is temporarily paused. This mode is ideal during cleaning, calibration, or system maintenance.
  • Easy to install and intuitive to use – designed for both technical staff and lab managers, and cleanroom operators.
  • Fully compatible with Building Management Systems (BMS) for centralized monitoring and data logging.
  • Equipped with high accuracy differential pressure transmitters that offer two standard analog outputs (4…20mA and 0…10V), allowing seamless connection to variable air volume controllers (VAV) or Building Automation Systems (BAS).
  • Optional Modbus RTU output for advanced integration — monitor display status remotely and even adjust alarm settings from your central system.

In cleanrooms, pressure conditions must remain within defined limits. The ATM420 connects differential pressure measurement with local display, air control and central monitoring. Operators can check the room status at the door, while relevant data can be shared with the building management system. Green means within range. Red means alarm. 

Check out the animation below.

With ATM420, laboratory staff and cleanroom operators can instantly verify if pressure conditions meet safety and process requirements — ensuring safety for people, products and cleanroom operations.