The OBT500-18GM60-E4 is a high-performance photoelectric sensor designed for demanding industrial automation and control applications. As a member of the through-beam sensor family, it operates by transmitting a light beam from an emitter unit to a separate receiver unit. Detection occurs when an object interrupts this beam, making it ideal for precise object presence detection, counting, and positioning tasks over long distances.
This specific model features a sensing range of up to 18 meters, a capability that sets it apart in environments requiring long-range detection without physical contact. The "60" in its designation refers to the light spot size or the lens characteristics, which contribute to its focused detection capabilities, reducing the chance of false triggers from background objects. The "E4" suffix often indicates specific housing material, ingress protection rating, or output configuration, commonly relating to a robust housing suitable for harsh conditions.
Constructed with a metal housing, the OBT500-18GM60-E4 offers exceptional durability against mechanical stress, vibrations, and environmental factors like dust or splashing water, typically conforming to IP67 protection standards. It utilizes a modulated infrared light source, which minimizes interference from ambient light sources such as sunlight or factory lighting, ensuring stable and reliable operation. The output is usually in the form of a digital switch signal (e.g., PNP or NPN transistor output), compatible with standard programmable logic controllers (PLCs), relays, and other industrial control systems.
Key technical parameters include a fast response time, often in the millisecond range, allowing for high-speed counting and sorting on production lines. Its high switching frequency enables it to detect rapidly moving objects on conveyor belts in packaging, automotive assembly, or material handling systems. The sensor is designed for a wide operating voltage range, commonly 10-30V DC, making it versatile for various electrical setups.
In practical applications, the OBT500-18GM60-E4 is frequently deployed in logistics centers for parcel dimensioning and sorting, in automotive plants for part verification on assembly lines, and in warehouse automation for pallet detection and racking systems. Its long-range capability is particularly valuable in large-scale storage facilities or outdoor applications where sensors need to detect objects across wide aisles or gates. Installation requires precise alignment of the emitter and receiver units, which is facilitated by built-in alignment indicators or audible/visual signals in some versions. Maintenance is minimal, primarily involving periodic lens cleaning to ensure optimal light transmission.
When integrating this sensor, considerations include ensuring a stable power supply, using shielded cables in electrically noisy environments, and programming the receiving control system to interpret the switch signal correctly. It is also advisable to verify the object's characteristics (size, material, color) as highly transparent or reflective materials may require adjustments or different sensor types. Compared to diffuse-reflective or retro-reflective sensors, the through-beam design offers the highest reliability for long-range applications but requires two mounting points and careful alignment.
The OBT500-18GM60-E4 represents a reliable solution for engineers seeking accurate, long-distance detection in industrial settings, contributing to enhanced efficiency, safety, and automation precision. Its robust design and advanced optical technology make it a staple in modern manufacturing and logistics infrastructure.
