The Keyence AH-308 Sensor Head is a precision-engineered displacement measurement sensor designed to deliver accurate and stable results in demanding industrial applications. Built to integrate with the AS-421C amplifier unit, this model provides engineers and system designers with a compact, reliable, and responsive solution for displacement sensing, thickness measurement, or position detection tasks. Its cylindrical shape with a diameter of 8 mm allows seamless installation even in tight spaces, ensuring compatibility with both new equipment and retrofit systems.

One of the defining characteristics of the AH-308 is its measuring range of 0 to 2.0 mm, which makes it well-suited for applications requiring precise short-range detection. Within this range, the sensor offers a straight-line detection window of 0.5 to 1.0 mm, ensuring accurate linear response and reliable interpretation of analog output signals. With an analog voltage output range of 0.5 to 1.0 V, the sensor integrates easily into a variety of measurement systems while maintaining compatibility with standard monitoring equipment. Its impedance of 100 Ω provides stable output characteristics that contribute to reliable signal integrity, minimizing noise and errors in readings.

The resolution of 0.2% of full scale and linearity within ±2.0% of full scale enable the AH-308 to deliver consistent and accurate data across its working range. This makes it ideal for inspection tasks where even small deviations must be detected, such as monitoring component thickness, detecting subtle displacements, or confirming precise assembly positions in automated production environments. These features also make it suitable for quality assurance operations that demand repeatable and traceable results.

Another key strength of the AH-308 is its response frequency of 3.3 kHz (-3 dB). This high-speed performance ensures that the sensor can capture rapid changes in target position or surface displacement, making it effective for use in fast-moving production lines, vibration monitoring, or applications where real-time responsiveness is critical. The quick reaction capability ensures that no significant movement or variation is overlooked, which is essential in industries where precision and reliability are paramount.

In addition to its technical strengths, the AH-308 is designed for durability and ease of integration. Its cylindrical design simplifies mounting, while its compatibility with the AS-421C amplifier ensures straightforward setup and calibration. This combination of compact design, precision measurement, and fast response makes the AH-308 a versatile sensor head that supports a wide range of industrial automation applications. Whether deployed in electronics manufacturing, mechanical assembly, or materials processing, it offers an optimal balance of accuracy, stability, and performance.