Fluke 820 LED Stroboscope, ±0.02 % Accuracy

This LED stroboscope is a compact, portable tool for non-contact measurement and stop-motion inspection of rotating and oscillating machinery. Designed for industrial environments, it allows users in automation, electronics, electrical and mechanical fields to observe motion, diagnose oscillations, and read markings on moving parts without interrupting operation.

• Flash range 30 to 300,000 FPM enables very low to very high-speed observation
• High-intensity 7 LED array delivers 4,800 lx at 6,000 FPM for clear imagery
• Adjustable Pulse width yields sharper images on high-surface-speed parts
• Accuracy ±0.02% supports precise RPM and frequency analyses
• External trigger connector allows synchronised control with processes
• Durable construction withstands 1m drops for field durability

• Suitable for checking belt slippage on HVAC fans and pumps
• Ideal for inspecting gear teeth meshing and clutch behaviour
• Used for RPM measurement on variable-frequency drive motors
• Can be used for monitoring mixing and dosing operations
• Used with speakers and rotating lab equipment for frequency studies

It operates between 0–45°C and is rated for non‑condensing humidity with defined relative humidity limits by temperature to maintain performance.

Delay and Pulse duration are adjustable in microseconds or degrees to advance or retard flashes for repeat alignment.

The LEDs emit at approximately 6,500 K and use pulse‑width modulation to reduce motion blur at high flash rates.

Resolution varies: 0.1 increments at lower FPM/Hz ranges and 1 increment at higher frequencies for detailed readouts.