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KPM Mini Hinge Joint Linear Displacement Sensor for Wall Crack Monitoring
The stability of building walls is critical for structural safety. Tiny cracks on walls may gradually expand under temperature variation, ground settlement or external load, posing potential risks to buildings. Real-time crack width monitoring becomes an essential method to track structural deformation, and the KPM mini hinge joint linear displacement sensor offers a reliable solution for such applications.
The KPM sensor adopts conductive plastic technology with infinite resolution and high repeat precision less than 0.02 mm, which can capture subtle changes in wall cracks accurately. Its eye joint design allows free movement within ±12.5° large angle. This feature effectively offsets minor deflection caused by wall vibration or uneven deformation, avoiding measurement failure due to angular displacement.
With a slim φ18.5mm aluminum shell and stainless steel pull rod, the compact sensor is easy to mount on wall surfaces without excessive modification to the building. It supports measuring strokes from 25 mm to 300 mm to fit different crack deformation ranges. The mechanical service life reaches over 30 million operations, making it suitable for long-term continuous monitoring tasks.
Rated IP54 protection and a wide working temperature range of -40℃ ~ +80℃, the KPM sensor works stably in outdoor and semi-outdoor environments exposed to humidity and temperature fluctuations. Users can select 2-wire, 3-wire or RS485 output modules according to data acquisition systems. It outputs real-time displacement data continuously for remote analysis and early warning.
For building inspection, historic structure preservation and slope retaining wall monitoring, the KPM linear displacement sensor tracks crack expansion continuously. Engineers can observe deformation trends, assess structural health and take maintenance actions before cracks develop into serious hazards. It delivers high-precision, long-service-life deformation measurement for building safety monitoring projects.