Cleanroom Control and Environmental Monitoring Systems

Occupancy Sensor

A low-profile ceiling or wall sensor that detects room use for lighting control, airflow setback and occupancy status without requiring user contact.

PIR or Dual-Technology Detection
Low-Profile Ceiling Housing
Adjustable Time Delay
Lighting and HVAC Outputs

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Product Introduction

The cleanroom occupancy sensor detects motion or presence using passive infrared, ultrasonic or combined technology. A smooth, low-profile housing limits exposed ledges while the optical lens covers the selected room area. Adjustable sensitivity, timeout and daylight interaction prevent brief absence from switching controlled systems too aggressively. Dry-contact, low-voltage or network output can command lighting, signal room-use status or request a defined HVAC setback mode while critical minimum ventilation remains under the primary airflow controls.

Key Features

PIR or dual-technology sensing adapts to room size and expected occupant movement.

A shallow sealed-looking enclosure suits clean ceilings and exposed cleanroom walls.

Configurable timeout avoids rapid switching during short periods of limited movement.

Separate lighting and occupancy outputs support coordinated but independent control actions.

Customer Product Concerns

Occupancy sensing must cover the actual work area without reacting through doorways or reducing critical cleanroom ventilation below safe minimums.

A sensor turns lights off while a seated operator makes little movement.Dual-technology detection and suitable sensitivity improve presence recognition.

Movement in the corridor triggers an empty cleanroom.Coverage masking and considered mounting keep the detection field inside the intended room.

A short absence causes unnecessary airflow and lighting cycling.Adjustable delay holds the occupied state through brief departures.

An occupancy command overrides the minimum cleanroom air-change requirement.The sensor requests only a defined setback mode while minimum airflow limits remain in the HVAC controller.

Typical Applications

Occupancy-based cleanroom lighting controlAirflow setback requestsLaboratory occupancy statusClean corridor lighting

Technical Parameters

Typical materials and dimensions for a low-profile cleanroom occupancy sensor are shown below.

Core Material	Pyroelectric PIR element with Fresnel lens in flame-retardant polycarbonate housing
Panel Thickness	30-55 mm sensor depth
Effective Width	90-140 mm sensor diameter or width
Maximum Length	Up to 160 mm housing dimension
Steel Facing Thickness	0 mm; non-metallic ceiling or wall enclosure
Core Density	1180-1220 kg/m³ for polycarbonate housing
Thermal Conductivity	0.19-0.22 W/(m·K) for polycarbonate enclosure material
Surface Finish	Matte white low-profile housing with translucent white optical lens
Joint Type	Twist-lock ceiling base or wall bracket with pluggable control terminal
Customization	Available based on the intended application and operating environment.

Available Options

PIR or dual-technology sensingCeiling or wall mountingDry contact or network outputDaylight hold-off input

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