Fluke 820-2 Specifications

Fluke 820-2 LED
Stroboscope
Rugged, compact and easy-to-use
Investigate and observe potential mechanism failure with confi­dence on a variety of machinery, in a wide range of industries, without making physical contact with the machine. The Fluke 820-2 LED Stroboscope is a rugged, compact, portable strobe ideal for stop motion diagnostics, mechanical troubleshooting, and process or product research and development.
Technical Data
The Fluke 820-2 LED Stroboscope is a simple, easy to use tool to stop motion for measurement and diagnos­tic purposes allowing you to:
Identify the running speed of rotating equipment without stopping the operation or making contact with machinery
Stop motion for diagnoses of parasitic oscillations, flaws, slippage or unwanted distortions
Measure speed of rotation or frequency of a rotating shaft, speaker, or mechanical part
Identify part numbers or other markings
Key features:
High intensity 7-LED array—4,800 Lux @ 6,000 FPM/30cm
High efficiency LED solid-state light source with uniform flash characteristics allow for higher flash rates—30-300,000 FPM (flashes per minute)
Digital pulse width modulation for exceptionally sharp images at high speeds
Rugged, durable design utilizes solid-state LEDs with no filaments, gases, hollow cavities, or glass—(one meter drop)
Quartz-accuracy control system provides high accuracy—0.02 % (± 1 digit)
Multi-line LCD display
Check the rotating speed of machinery without
physical contact or need for reflective tape
Advance or retard flash timing for viewing gear teeth, cutting surfaces, repeats, or “drifting” equipment.
Simple push button operation with 2x and ÷2 buttons for easy adjustment
Adjustable flash duration
For most applications the standard flash duration will work well with- out adjustment. In other applications with higher rpm or larger rotating objects with high surface speeds, an adjustable flash duration is needed. In high speed applications, objects may move during the brief period of a single flash, resulting in a blurred image. By decreasing flash duration, objects have less time to move and the image will appear sharper.
Common applications for the 820-2
The Fluke 820-2 LED Stroboscope is more than just a tool to measure rotational speed of machinery without physical contact. It is also an excellent diagnostic tool for a wide variety of applications:
Belt driven machines—HVAC fans, pumps
Roller bearings, shafts, gear teeth or other machine
components
Clutches and cogwheels
Foundations—resonance vibrations
Cable or piping wear or damage
Mixing and dosage processes
In addition, the stroboscope can be used as a strobe tachometer to measure speed instead of using a laser tachometer. In order to use the stroboscope, the com­ponent under measure must be visible, and have an identifying mark that can be used as a point of refer­ence. A strobe tachometer is a useful tool because you can’t always get access to the machine shaft to stick a piece of reflective tape to use a laser tachometer or make contact with the moving shaft to use a contact tachometer—using a stroboscope you can “stop” the shaft down to 30 RPM (FPM).
Use the 820-2 LED for:
Turbines that vary in speed and change speed frequently
Variable Frequency Drive motors that vary in speed, but do not change frequently
Find belt rotation speed and look for belt slippage
Find machine element components—fan blades,
pump vanes, compressor screws, and gear teeth.
RPM measurement and frequency investigation
Slip measurement
Use the Fluke 820-2 LED Stroboscope in a variety of industries:
Electronics/electrical engineering
Observe the anchor swing from synchronic and asynchronous motors, carbon brush of the collec­tors and sliding rings. Find mistakes on speakers, record players, magnetic tape recorder, relay, contact rectifiers, power switch, phone selector, home appliances, kitchen equipment, ventila­tors, turbines, vibrators, counters, speakerphones, sorting-machines, centrifuges, electrical tools and equipment.
Find errors caused by work process on manufac­turing machines—wrappers, cabling machines, isolated machines, wireless printing machines, cutting machines and drill machines.
Control the synchronization of motors and machines as well as their leakage and tarnish behavior. Check the behavior of motors, machines, and drives for power drain. Identify material stress as well as fatigue by wave motion reverberations at higher machine efficiency.
Machine construction
Investigate meshing of gears, control of drives, ball bearings, couplings, lever movement, linkages, cylinders, valve clip tongue and valve clip leverage, resonance vibrations, and early detection of fatigue of the material from high load.
Control the work process on high-speed machines. Check the compliance of rotational parts of motors, machine and manufacturing equipment, and the behavior of couplings, belts and chain-drives at high speeds.
Observe the work processes of centrifuges, pres­sure/cut machines, automatic punching, riveting machines, screwing machines, grinding machines, polishing machines and boring machines. Observe the automatic moving processes and play of machines and mechanical equipment that is out­side what can be seen by the human eye.
Automotive and motor manufacturing
Adjust the ignition and the valves. Check the valve lever movement, valve spring vibration, and injec­tion operations in combustion engines. Control of the various work processes in manufacturing of automatic and machines all of kinds.
Observe the vibration of motors, hangers, transmis­sion shafts, springs, wind generators, and light machines.
Optics manufacturing
Test camera closures. Control transport of film cam­eras and projectors. Observe the drive elements, cooling fan, and the return flow of movie projec­tors. Investigate the work process on lens-grinding machines.
Perform movement studies seen in the fast move­ment of objects through film recordings.
Print, paper, and cardboard manufacturing
Observe the passer marks and control the print­ing process. Watch multicolor printers in order to assess the print quality relative to the rate.
Check on package machines, folding box automa­tion, cutting automation and adhesive automation. Control the work process of the punching, printing, and sorting automation. Control the rotary knives, waltz, transport rollers, gears, stores, waves, etc.
Mining
Observe shiver and swinging filters, transport bands, and centrifuges. Control the generators, drive machines, rock drills and other mechanical equipment.
Shipbuilding, aircraft construction
Determine the appearance of cavitation bubbles on propellers at experimental models. Control the movement in marine engines, generators, E-machines, and air systems.
Observe the behavior of propellers and air screws at different rpm (drew behavior and fluid behavior).
2 Fluke Corporation Fluke 820-2 LED Stroboscope
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