Disclaimer: Always wear appropriate PPE when working around rotating machinery. Remove loose clothing and jewelry.
Press the red "Measure" button to turn the unit on. Ensure the LCD screen shows "LASER" on the left side. uni 3220
You stick a small piece of reflective tape (included in the box) onto the rotating object. The laser shines at the tape. Every time the tape passes the laser, the sensor counts one rotation. In one second, it knows exactly how fast the shaft is spinning. Step 1: Prep the Target Cut a 12mm square of the reflective tape and stick it to the rotating surface. If the shaft is black or dark, the reflection works best. For shiny metal, you may need to put a piece of black tape down first, then the reflective tape on top. Disclaimer: Always wear appropriate PPE when working around
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. Ensure the LCD screen shows "LASER" on the left side
How to measure RPM safely, accurately, and without stopping your machines.
| 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 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.