SICK HTB18L-B4A5BG Laser Photoelectric Sensor

SICK HTB18L-B4A5BG Photoelectric Sensor – Precision Laser Background Suppression

The SICK HTB18L-B4A5BG photoelectric sensor from the H18 Sure Sense family is engineered for applications that demand dependable background suppression and consistent detection performance. Its compact M18 hybrid housing and laser-based visible red light make it ideal for installations requiring accurate sensing at short to medium ranges. The device offers a usable detection span from 30 to 250 mm, supported by rapid response capability for dynamic automation processes. With robust environmental sealing and simple adjustment via dual potentiometers, the HTB18L-B4A5BG provides a reliable solution for detecting small items and maintaining stability in demanding industrial environments.

The HTB18L-B4A5BG delivers strong performance through its focused laser spot, ensuring precise object recognition even when dealing with dark, irregular, or very small targets. Its high switching frequency enables use in fast-moving production lines where accurate timing is critical. The built-in light bar allows operators to monitor signal strength with ease, reducing calibration errors and supporting quick commissioning. Made from a durable VISTAL® housing material and designed for challenging operating conditions, the sensor maintains consistent functionality across a wide temperature range. This results in improved uptime, more reliable machine feedback, and greater accuracy in automated inspection or positioning tasks.
Why HTB18L-B4A5BG?

Choose the HTB18L-B4A5BG when you need a compact sensor that behaves like a precision instrument. Its laser-based detection, fast response, and stable background suppression make it capable of spotting even tiny objects with confidence. It brings together simplicity, speed, and accuracy—turning difficult sensing points into dependable checkpoints in any automated process.

What Problem Does It Solve?

The HTB18L-B4A5BG tackles the common issue of unreliable detection when backgrounds are reflective, objects are dark or small, or production is moving quickly. Instead of inconsistent triggering or constant manual tweaking, it delivers stable, repeatable sensing. It ensures machines receive trustworthy feedback, even when conditions are unpredictable or constantly changing.

Key Features & Specifications – SICK HTB18L-B4A5BG (Part No. 1078438)

Download SICK HTB18L-B4A5BG (1078438) Datasheet

Commercial Data – SICK HTB18L-B4A5BG (Part No. 1078438)

The Applications of the SICK HTB18L-B4A5BG Photoelectric Sensor

1. High-Speed Carton Counting in Packaging Lines

On modern packaging conveyors, cartons often move rapidly and vary in surface finish—from glossy prints to darker recycled materials. Conventional sensors may misread edges or struggle to differentiate the product from the conveyor background. The HTB18L-B4A5BG’s narrow laser spot and stable background suppression allow it to detect carton edges with high consistency, even when spacing is minimal. This ensures accurate counting for downstream operations such as tray packing or case forming. Its fast response time supports high-throughput lines, reducing miscounts and improving overall equipment efficiency.

2. Micro-Component Detection in Electronics Assembly

Manufacturers of compact electronic modules rely on sensors that can detect very small parts on fixtures made of mixed materials. The challenge arises when tiny black components blend visually into metal rails or become shadowed during movement. The HTB18L-B4A5BG excels here thanks to its focused laser spot, which isolates the target and ignores the background. Its adjustable detection range enables precise triggering on miniature parts without false activation from surrounding hardware. This level of accuracy helps maintain assembly quality and reduces the need for manual inspection.

3. Pallet Presence Verification in Warehouse Automation

Automated logistics systems need dependable detection when pallets of various materials—wood, recycled plastics, or composite structures—enter scanning or sorting stations. Changing colours and surfaces can cause errors with simple diffuse sensors. The HTB18L-B4A5BG’s background suppression ensures it only reacts to the pallet rather than reflections from rollers or empty conveyor sections. Its rugged construction withstands dusty warehouses and continuous impact from vibration. By providing reliable presence feedback, it helps prevent jams, reduces stoppages, and keeps material flow consistent.

4. Wash-Down Conveyor Monitoring in Food Production

Food-grade environments require sensors that deliver stable performance despite moisture, steam, and frequent high-pressure cleaning. Traditional optical sensors often lose accuracy when condensation forms on surfaces or when lighting changes throughout the day. The HTB18L-B4A5BG’s sealed housing and laser beam allow it to maintain a clear detection point even during challenging wash-down cycles. It can monitor trays, containers, or bottles entering filling and sealing stations with consistent precision. This contributes to smoother line operation, improved hygiene compliance, and fewer production interruptions.

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