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Force and mechanical measuring equipment
The testo 477 LED tachometer makes incredibly fast movements possible to measure accurately. This allows you to check machines and systems while they are still running and measure speeds up to 300,000 rpm.
The testo 477 can help you assess the quality and efficiency of machinery through the rotational speed of shafts that cannot be judged by the naked eye. This device operates on the principle of LED flashing.
In addition, the testo 477 can also measure the rotational speed of very small and difficult-to-reach objects. No need for reflective stickers, no need to stop the machine and no interruption to the production process.
Extremely high measurement range of up to 300,000 flashes per minute (fpm) and very high illumination of up to 500 Lux, allowing you to perform rotational speed measurements up to 300,000 rpm.
Impact protection with protection class IP65 ensures that the testo 477 can withstand the knocks of everyday use. You can carry out continuous measurements for up to 5 hours.
| LED LIGHT – RPM | |
|---|---|
| Measuring range | 30 to 300,000 fpm (revolutions per minute) |
| Accuracy | 0.02 % measured value |
| Resolution | ±0.1 (30 to 999 fpm) ±1 (1000 to 300,000 fpm) |
| GENERAL TECHNICAL SPECIFICATIONS | |
|---|---|
| Protection level | IP65 |
| Flash duration | Can be adjusted |
| Flash intensity | 4800 Lux at 6000 FPM / 30cm |
| Flash color | About 6500K |
| Battery life | Rechargeable NiMH: approximately 11 hours at 6000 fpm; Battery: 5 hours at 6000 fpm (3 x AA) |
| Display screen | LCD (Liquid Crystal Display) |
| Screen size | multi-line |
| Battery reverse protection | Have |
| Low level | <1 V |
| Maximum current | 50 mA |
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