High-Precision Measurement Solution for Automation and Material Handling Systems

Introduction to SICK DT35-B15251 Laser Distance Sensor

The SICK DT35-B15251 is a high-performance laser distance sensor from the Dx35 series, designed for precise non-contact distance measurement in industrial environments. With a measuring range of 50 mm to 12,000 mm and a repeatability of ≥0.5 mm, this sensor provides reliable performance for various automation applications. It features a visible red laser (658 nm wavelength) with Class 2 safety rating and offers multiple output options including analog (4-20 mA/0-10 V), digital, and IO-Link V1.1 communication. The sensor's compact design (32 × 58.67 × 42.7 mm), IP65/67 protection rating, and operating temperature range of -30°C to +55°C make it suitable for demanding industrial environments where space constraints and harsh conditions are concerns.

Technical Specifications and Key Features

The DT35-B15251 employs time-of-flight measurement principle with configurable response times from 2.5 ms to 96.5 ms, supporting switching frequencies up to 333 Hz. The device offers five speed settings (Super Fast to Super Slow) and multiple operating modes including Distance to Object (DtO), switching window, and object-between-sensor-background (ObSB) detection. Its IO-Link interface enables parameterization, diagnostics, and process data transmission at 38.4 kbit/s. The sensor features teach-in functionality for both analog and digital outputs, with hysteresis configurable from 0 mm to 11,950 mm via IO-Link. Power supply requirements are DC 12-30 V with ≤1.7 W power consumption, and the unit meets EMC standards EN 61000-6-2/3/4.

Application Scenarios in Industrial Automation

1. Material Handling Systems: Detecting object presence and position on conveyor belts with high repeatability

2. Warehouse Automation: Measuring package dimensions and stack height in logistics operations

3. Automotive Manufacturing: Precise positioning verification in assembly line applications

4. Packaging Industry: Monitoring fill levels and container positioning with millimeter accuracy

Advantages Over Alternative Solutions

The DT35-B15251 provides superior flexibility through its adaptable output configuration, allowing seamless integration with various control systems. Compared to ultrasonic sensors, it offers higher accuracy and faster response times, while its visible laser spot enables easy alignment and troubleshooting. The IO-Link capability simplifies parameter changes and maintenance, reducing downtime in production environments.

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