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.

Mastering the Uni 3220: The Ultimate Guide to Your Contactless Tachometer

| 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) |

Press the red "Measure" button to turn the unit on. Ensure the LCD screen shows "LASER" on the left side.

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.

3220 Free - Uni

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.

Mastering the Uni 3220: The Ultimate Guide to Your Contactless Tachometer 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) | You stick a small piece of reflective tape

Press the red "Measure" button to turn the unit on. Ensure the LCD screen shows "LASER" on the left side. In one second, it knows exactly how fast

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.