Complete room pressure control package with white wall display, pressure sensor and blue damper actuator

Cleanroom Control and Environmental Monitoring Systems

Room Pressure Control System

A fast room-level control package that compares differential pressure with setpoint and modulates supply or exhaust airflow to preserve the intended pressure cascade.

Fast Pressure Response
Door-Aware Control Logic
Supply and Exhaust Coordination
Local Pressure Display

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Product Introduction

The room pressure control system combines a low-range differential pressure sensor, room controller, modulating airflow device and local display. It regulates the offset between supply and exhaust so the room remains positive or negative relative to its reference space. Door contacts allow the controller to suspend aggressive correction while a door is open, avoiding actuator hunting and airflow overshoot. The local display gives occupants immediate status while the network interface sends pressure, alarms and operating mode to the supervisory system.

Key Features

Low-range differential measurement resolves the small pressure relationships used in cleanrooms.

Door-open logic reduces unnecessary damper movement during normal personnel passage.

Cascade control can coordinate supply and exhaust devices around a defined airflow offset.

Local indication and remote network values present the same room condition to users and operators.

Customer Product Concerns

Room pressure can change within seconds when a door opens, an exhaust device changes state or an airflow path becomes restricted.

A door opening causes the controller to drive the airflow device to an extreme position.Door-aware logic holds or limits correction until the doorway disturbance has cleared.

Independent supply and exhaust loops fight each other and destabilize the room.A coordinated airflow offset maintains one consistent pressure-control strategy.

Small pressure changes are hidden by an unsuitable high-range sensor.A dedicated low-differential-pressure transducer provides the resolution needed for room control.

Occupants cannot tell whether the room is safe to enter.A color status display and audible alarm make the current pressure condition visible at the door.

Typical Applications

Positive-pressure pharmaceutical roomsNegative-pressure containment roomsHospital isolation suitesResearch laboratory airlocks

Technical Parameters

Typical enclosure and sensing-package construction for cleanroom room pressure control is shown below.

Core Material	Flame-retardant polycarbonate room controller with MEMS pressure sensor and powder-coated steel damper panel
Panel Thickness	45-120 mm controller and display depth
Effective Width	120-240 mm room display width
Maximum Length	Up to 300 mm display or controller height
Steel Facing Thickness	1.0-1.5 mm for the optional steel control enclosure
Core Density	1180-1220 kg/m³ for polycarbonate housing parts
Thermal Conductivity	0.19-0.22 W/(m·K) for polycarbonate housing material
Surface Finish	Smooth white polycarbonate display face with blue backlit status screen
Joint Type	Flush wall display with barbed pressure ports, pluggable terminals and network connector
Customization	Available based on the intended application and operating environment.

Available Options

Positive or negative pressure modeSupply or exhaust damper controlDoor contact integrationBACnet or Modbus communication

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