Why Choose the Carlo Gavazzi PA12B3T20PO Photoelectric Sensor?
The Carlo Gavazzi PA12B3T20PO is a compact M12 through-beam photoelectric receiver designed for reliable object detection in industrial automation, machine guarding and access-control applications. It forms part of a through-beam sensing system in which a separate infrared emitter projects light towards the receiver, allowing the sensor to detect an object when the beam is interrupted.
This receiver provides a PNP normally open output with light-switching operation and is powered from a 10–30 V DC supply. Its through-beam sensing arrangement offers a detection range of up to 20 m, making it suitable for applications requiring dependable sensing across greater distances than typical diffuse or retro-reflective photoelectric sensors.
The PA12B3T20PO is built in a durable metal cylindrical threaded housing with IP67 protection and a factory-fitted 5 m cable. It is specified as an ESPE Type 2 device and is associated with safety standards including EN 12445, EN 12453, EN 12978 and UL 325 for compatible door, gate and access applications.
Key Advantages
- Reliable through-beam photoelectric detection up to 20 m.
- PNP normally open output for integration with common industrial control systems.
- Wide 10–30 V DC supply range.
- Infrared sensing technology provides dependable beam interruption detection.
- Compact M12 cylindrical threaded metal housing.
- Factory-fitted 5 m cable simplifies installation.
- IP67 protection for use in demanding industrial environments.
- Specified as ESPE Type 2 for compatible safety-related applications.
Key Features
- Carlo Gavazzi PA12 series photoelectric receiver.
- Through-beam sensing principle.
- 20 m sensing range.
- PNP transistor output.
- Normally open (NO) output function.
- Light-switching sensing mode.
- Infrared light detection.
- 10–30 V DC operating voltage.
- 5 m integral cable.
- Cylindrical threaded barrel housing.
- Metal housing construction.
- IP67 degree of protection.
- ESPE Type 2 classification.
Reliable Through-Beam Detection for Industrial Automation
Through-beam photoelectric systems use separate emitter and receiver units positioned opposite one another. The emitter sends a continuous infrared beam to the PA12B3T20PO receiver, and the output changes state when an object interrupts that beam. This arrangement provides excellent sensing reliability and a long operating range because the receiver detects light directly from the dedicated emitter.
The PA12B3T20PO is particularly suitable for automated gates, industrial doors, conveyors and machinery where positive beam interruption detection is required. Its PNP normally open output allows straightforward integration with compatible PLC inputs, controllers and safety-related systems, while its IP67 metal housing provides robust protection in industrial environments.
Typical Applications
- Automated industrial doors and gates.
- Machine access and presence detection systems.
- Conveyor object detection.
- Packaging and production machinery.
- Material handling systems.
- Long-range industrial photoelectric sensing.
- Warehouse and logistics automation.
- Safety-related beam detection in compatible access systems.
