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Moisture Meter, Pinless with Ball Sensor

Extech MO57 Pinless Moisture Meter with Ball Sensor

Deep-penetration, non-destructive structural moisture diagnostics for advanced facility assessments.

The Extech MO57 is an advanced diagnostic instrument engineered for building inspectors, structural engineers, and facility maintenance teams who require rapid and completely non-invasive moisture profiling. Utilizing a specialized spherical ball sensor, this meter provides smooth, mar-free scanning across delicate or hard surfaces while detecting moisture variations up to 10cm (4 inches) beneath the material.

It is the definitive tool for conducting extensive, high-speed structural moisture audits across walls, sub-flooring, and masonry without causing cosmetic damage to the testing site.

Key Technical Capabilities

  • Spherical Sensor Technology: Designed to glide seamlessly over tiles, finished concrete, and painted walls, eliminating the surface damage and puncture marks associated with traditional pin-type meters.

  • Deep-Scanning Penetration: Emits a high-frequency signal that senses relative moisture changes up to 100mm (4") below the surface, making it ideal for locating hidden structural moisture pockets or sub-surface leaks.

  • Instant Categorization Feedback: Features an integrated multi-color LED bar graph and an audible alert that dynamically escalates as moisture levels rise, allowing technicians to conduct rapid, eyes-free sweeping of large areas.

  • High-Contrast Digital Display: Equipped with a large, backlit LCD screen that provides clear, relative numerical values (0 to 100) for precise data logging and baseline comparisons.

  • Field-Ready Durability: Built with a rugged, ergonomic housing, a low-battery indicator, and a standard Data Hold function to freeze critical readings on the screen during awkward inspections.

Technical Specifications Summary

ParameterSpecification
Measurement TypePinless Spherical Sensor (Relative)
Penetration DepthUp to 100 mm (4 inches)
Measurement Range0.0 to 100.0 (Relative)
Alert SystemMulti-color LED & Audible Tone

Incorporate deep-scanning, non-destructive moisture diagnostics into your technical auditing procedures

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