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Cleanroom Doors, Windows and Interlock Systems
Cleanroom Door Position Sensor
A matched magnetic contact set that reports whether a cleanroom door leaf is physically aligned with the closed frame position.
- Non-Contact Magnetic Sensing
- Sealed Reed Contact
- Dry-Contact Controller Output
- Interlock Feedback
Product Introduction
The cleanroom door position sensor pairs a reed-switch module on the frame with a permanent magnet on the moving leaf. When the door closes and the two housings align within the sensing gap, the magnetic field changes the dry contact state sent to the interlock or access controller. Stainless or smooth white housings protect the encapsulated components, and the absence of a mechanical plunger removes a contact point from the clean opening.
Key Features
Encapsulated reed contacts resist contamination at the sensing element and require no exposed actuator.
Separate sensor and magnet housings accommodate frame-to-leaf movement across a controlled gap.
Dry-contact wiring integrates with interlocks, access panels and local door-status indicators.
Customer Product Concerns
The control system must distinguish a physically closed door from one that is merely locked or moving through the frame.
A mechanical limit switch wears or traps residue where its plunger touches the door.The sealed reed and magnet sense alignment without mechanical contact.
Frame movement causes intermittent feedback when the sensing gap is too narrow.Matched surface or recessed housings provide a defined operating gap and adjustment range.
An interlock releases the opposite door before the first leaf has fully returned.The controller receives a dedicated closed-position contact from the aligned sensor pair.
Typical Applications
Cleanroom interlock feedbackAccess-controlled laboratory doorsAutomatic door closed-position inputPersonnel and material airlocks
Technical Parameters
Typical dimensions and material data for a sealed cleanroom magnetic door contact are listed below.
| Core Material | Hermetically sealed reed capsule with copper-alloy contacts and ferrite permanent magnet |
|---|---|
| Panel Thickness | Approximately 12–25 mm housing depth |
| Effective Width | Approximately 19–38 mm module width |
| Maximum Length | Approximately 110 mm for a long-range stainless sensor module |
| Steel Facing Thickness | 0.8–1.2 mm brushed stainless-steel housing where selected |
| Core Density | Approximately 4800–5100 kg/m³ for the ferrite magnet core |
| Thermal Conductivity | Approximately 3–5 W/(m·K) for the ferrite magnet material |
| Surface Finish | Brushed stainless steel or smooth white moulded polymer housing |
| Joint Type | Matched surface or recessed sensor-and-magnet pair aligned across a controlled gap |
| Customization | Available based on the intended application and operating environment. |
Available Options
Normally open, normally closed or changeover contactWhite polymer or stainless housingSurface or recessed mountingPrewired lead or screw-terminal connection
Planning a Cleanroom Door Position Sensor specification?
Send us your dimensions, installation conditions, performance targets and required surface finish.
