Smart Sensor AR925 Contact Digital Tachometer (RPM Meter)

High-Performance Contact RPM & Speed Gauge

The Smart Sensor AR925 is a precision, handheld digital tachometer designed for quick and highly accurate measurements of rotating and linear surface speeds. Utilizing an advanced microcomputer (MCU) and electro-optical technology, this contact-style gauge is perfect for mechanics, engineers, and industrial maintenance professionals who need direct, reliable data from machinery.

Key Features:

Dual Measurement Modes: Seamlessly switches between measuring rotational speed (RPM) and linear surface/rolling speeds (meters or feet per minute).

High Precision & Wide Range: Measures rotating speeds from 0.5 to 19,999 RPM and linear rolling speeds up to 19,999.9 m/min with a quick 0.8-second sampling time.

Smart Data Storage: Automatically stores and recalls Maximum (MAX), Minimum (MIN), and the Last measured values so you never miss a reading.

Interchangeable Probes: Comes complete with convertible rubber tips and a convex channel linear rate sensor, making it incredibly easy to measure wires, cables, ropes, or flat conveyor surfaces.

User-Friendly Design: Features a large, clear LCD backlit display for easy reading in low-light environments, a low-battery indicator, and a tough, ergonomic ABS plastic housing built to withstand daily workshop use.

Specifications:

Rotational Range: 0.5 ~ 19,999 RPM

Linear Surface Range: 0.05 ~ 19,999.9 m/min (0.2 ~ 6,560 ft/min)

Accuracy: $\pm(0.05\% + 1 \text{ digit})$

Power Supply: 3 x 1.5V AAA Batteries (not included)

Dimensions: 155 x 55 x 35 mm

Weight: 132g (lightweight and portable)