Uni 3220 May 2026

This compact, laser-guided tachometer allows you to measure Rotations Per Minute (RPM) from a safe distance. Whether you are an HVAC technician diagnosing a faulty blower or a hobbyist balancing a CNC spindle, here is everything you need to know about the Uni 3220. The Uni 3220 is a non-contact digital tachometer. Unlike old-school mechanical tachometers that required physical contact with a spinning shaft, this device uses a visible laser beam to measure reflective pulses.

If you maintain industrial motors, RC cars, or even bicycle wheels, this $40-$60 tool will pay for itself the first time you diagnose a failing bearing (overheating due to high RPM) or calibrate a variable frequency drive. uni 3220

| Feature | Uni 3220 | Generic $20 Units | Fluke 931 | | :--- | :--- | :--- | :--- | | | 99,999 RPM | 30,000 RPM | 99,999 RPM | | Build Quality | Rubber armored | Hard plastic | Rubber armored | | Memory Recall | Yes (Last/Max/Min) | Usually only Max | Yes (Detailed stats) | | Price Point | $$ (Mid-range) | $ (Budget) | $$$$ (Premium) | This compact, laser-guided tachometer allows you to measure

Disclaimer: Always wear appropriate PPE when working around rotating machinery. Remove loose clothing and jewelry. Remove loose clothing and jewelry

How to measure RPM safely, accurately, and without stopping your machines.

Hold the device 50mm to 500mm (2 to 20 inches) away from the rotating object. The laser spot should hit the reflective tape squarely.

If you work with motors, fans, conveyor belts, or any rotating machinery, you know the golden rule: That’s where the Uni 3220 becomes an indispensable tool in your toolkit.