The Keyence AT3-400 Amplifier Unit is a precision controller designed for advanced displacement and position measurement tasks in industrial environments. Its high accuracy, stability, and robust design make it a versatile solution for quality inspection, automation, and research applications. Engineered to support fine measurements, the AT3-400 ensures dependable performance in processes where even the smallest deviations must be captured and analyzed.

One of the standout aspects of the AT3-400 is its exceptional resolution of 0.2 µm, allowing it to deliver highly detailed measurement results. This level of precision is critical in applications such as semiconductor inspection, precision machining, and component assembly verification, where minute errors can lead to significant quality issues. By enabling such fine resolution, the amplifier enhances production efficiency and ensures adherence to strict tolerance standards.

The unit features a measurement range of ±0.5 mm, offering flexibility in monitoring both very small displacements and slightly larger variations. This makes the AT3-400 well-suited for tasks ranging from microscopic material expansion analysis to displacement sensing in mechanical systems. Its ability to cover this range while maintaining stable performance sets it apart from conventional amplifiers that often compromise resolution for range.

In terms of output, the AT3-400 provides a ±5V analog output with a 100 Ω impedance, making it compatible with a wide range of controllers, PLCs, and monitoring systems. This ensures seamless integration into existing production lines and laboratory setups. Additionally, the inclusion of a disconnection alarm output (NPN open-collector, 100 mA capacity) strengthens system reliability by immediately alerting operators to signal interruptions or wiring issues. This built-in fail-safe mechanism helps minimize downtime and prevents errors from going unnoticed.

The compact and durable design of the AT3-400 allows it to function reliably in challenging industrial environments. Whether deployed in high-precision inspection stations, automated assembly lines, or research laboratories, it provides consistent and dependable measurement data. Its design philosophy prioritizes both accuracy and robustness, ensuring that it continues to perform under demanding operational conditions.

Overall, the Keyence AT3-400 stands as a specialized amplifier unit that balances resolution, range, and reliability. Its combination of high-resolution detection, flexible output, and integrated alarm functionality makes it an indispensable tool for industries where precision measurement is critical. By delivering stable, high-quality data, it supports manufacturers and engineers in maintaining product quality, improving process control, and driving efficiency in production environments.