Description
The Leuze PRK5/4P is a compact polarized retro-reflective photoelectric sensor from the Series 5 line, designed for reliable object detection in automated manufacturing. It works by emitting a red LED beam that reflects off a target reflector (like the TK 100×100). The built-in polarization filter effectively suppresses false triggers caused by shiny surfaces or direct glare, making it ideal for packaging and material handling.
The listed variants (PRK5/2N, PRK5.H3/2N, ET5.3/4P-M8) offer different output types (NPN vs. PNP) and detection methods (retro-reflective vs. diffuse) to suit various control systems. All share the same rugged IP67-rated housing.
Key Features
- Detection Method: Polarized retro-reflective (needs reflector) or Diffuse (object-dependent).
- Range: Up to 4.5 m (guaranteed) with reflector.
- Outputs: 2x PNP or 2x NPN digital switching outputs.
- Robustness: IP67 protection, resistant to shock and vibration.
- Origin: Germany (Leuze Electronic)
Model Reference Table
Model | Type | Output | Connection | Best For |
|---|---|---|---|---|
PRK5/4P | Retro-Reflective | 2x PNP | 2m Cable | Standard bright output |
PRK5/2N | Retro-Reflective | 2x NPN | 2m Cable | NPN control systems |
PRK5.H3/2N | Retro-Reflective | 2x NPN | 2m Cable | Transparent objects (film) |
ET5.3/4P-M8 | Diffuse | 2x PNP | M8 Plug | Close-range object detection |
⚠️ Note: The PRK5 and PRK5.H3 require a reflector. The ET5.3 is a diffuse sensor that detects objects directly without a reflector.
Technical Specifications (PRK5/4P)
Parameter | Specification |
|---|---|
Model | PRK5/4P (Series 5) |
Principle | Polarized Retro-Reflective |
Light Source | Red LED (620 nm) |
Operating Range | 0.02 – 4.5 m (w/ TK(S) 100×100 reflector) |
Supply Voltage | 10 – 30 V DC |
Output | 2x PNP (Light/Dark switching) |
Response Time | 1 ms |
Connection | 4-wire, 2m PUR cable |
Protection | IP67 |
Temp. Range | -40 °C to +60 °C |
Warranty & After-Sales
- Factory New: 12 months warranty.
- Refurbished: 3-6 months warranty (tested for output reliability).
- Support: Assistance with wiring (PNP vs. NPN), sensitivity adjustment, and mounting.
Delivery Time
- Standard: 3-5 working days.
- Express: Available upon request.
Why Choose Our Store
- Genuine Leuze sensors.
- Expertise in optical sensing and automation.
- Global logistics network.
Applications
- Packaging: Detecting boxes or bottles on conveyors.
- Material Handling: Monitoring pallet presence.
- Machine Guarding: Checking if a part is loaded correctly.
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