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Fluke 820-2 LED Stroboscope

 
Fluke 820-2
Catalog #: 4550041
         
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LED STROBOSCOPE

Features

  • 820-2 LED Stroboscope
  • High-intensity 7-LED array – 4,800 Lux @ 6,000 FPM/30cm
  • High efficiency LED solid-state light source with uniform flash characteristics allows 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 – (1 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
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Fluke 820-2 LED Stroboscope

Fluke 820-2 LED Stroboscope

         
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Product Information

Fluke 820-2 LED Stroboscope

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 in a vast range of industries. Even better, it’s a Fluke tool which means that it is rugged and ergonomic. It allows clear observation of machinery in motion – all cyclic motion can be slowed or stopped visually in order to note performance, observe dynamic motion, measure speed, or photograph/video the action.

The Fluke 820-2 is far superior to its competitors on every front including feature set, form factor and brand promise. The stroboscope can be used as a strobe tachometer to measure the speed instead of using a laser tachometer. In order to use the stroboscope, you will need access to visibly see the object to measure and it needs to have some marking on it to use as a reference point. A strobe tachometer is a good tool to have 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.

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.

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

Adjustable flash duration

For most applications the standard flash duration will work well without 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 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 out-side what can be seen by the human eye.

Chemical manufacturing

  • Control the mixing and dosing processes. Observe mixers, pumps, regulation systems, transport bands, package machines, dosing and sorting machines, tablet machines, bottle filling machines, closure machines, etc.
  • Observe the product in dry centrifuges and air pressure machines, conveying systems, swing filters and crushing plants, etc.

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).

Medical

  • Observe the drilling process in medical institutions.
  • Set the responsive assets on light pulses of different frequencies (e.g. an epileptic)
  • Use in laboratories, research institutions, schools, universities, and technical training facilities
  • Observe the work processes for demonstration and experimental purposes. Use as visual evidence for theoretical opinions where visualization of optics are not detectable.
features
Figure 1. The Product
Table 2. The Product
Item Description
1 Display
2 Power Button- Push power to turn on the Product.
Push and hold power for 2 seconds to turn off the
Product.
3 Push _2 to divide the current set value by two.
The scroll speed increases when _2 is
continuously held down.
4 External trigger connection
5 Setup- Push setup to move between different
settings and modes.
6 Push x2 to double the current set value. Speed of
the scroll increases when this button is held down.
7 LED strobe
8 Push the trigger (vol) up to increase the current set
value. Push vol down to decrease the current set
value. Speed increases when vol is held down.
9 Battery compartment

What's In The Box

  • Protective case
  • External trigger connector

Specifications

Mechanical Specifications
Size (HxWxL) 5.71 cm x 6.09 cm x 19.05 cm
2.25 in x 2.4 in x 7.5 in
Weight 0.24 kg
Environmental Specifications
Operating temperature 0 °C to +45 °C
Storage temperature -10 °C to +50 °C
Operating humidity (without
ondensation)
Non-condensing (<10 °C)
90 % RH (10 °C to 30 °C)
75 % RH (30 °C to 40 °C)
45 % RH (40 °C to 50 °C)
Absorption/corrosion 30 °C, 95 % RH, 5 day
Product functions normally
Operating altitude 2,000 m
Storage altitude 12,000 m
Vibration MIL-PRF-28800F Class 2
Impact resistance 1 m drop
EMI, RFI, EMC EN61326-1:2006
Safety Compliance
Agency approvals CE
Class III (SELV) Pollution Degree 2
Miscellaneous Specifications
Flash Frequency
Range 30 to 300,000 FPM
0.5 to 5000 Hz
Accuracy 0.02 %
Resolution 30 to 999 FPM = 0.1
1000 to 300,000 = 1
0.5 Hz to 999 Hz = 0.1
1000 Hz to 5000 Hz = 1
Frequency setting FPM or Hz
Flash Pulse
Duration Adjustable in μs or degrees
Delay Adjustable in μs or degrees
Light
Color Approximately 6500 K
Emission output 4,800 lx @ 6000 FPM at 30 cm
External Trigger
Method Connector to externally control trigger
High level 3 V to 32 V
Low level <1 V
Minimum pulse width 50 μs connection

Fluke 820-2 Product Specifications Summary:
(for full specs please see the full specs tab or the data sheet)

Reliability / Preventative Maint / Rotational/Stroboscopes Template

Style (Stroboscope)Hand Held
External TriggerYes

Test Equipment General Attributes

Product Weight0.24 KILOS (0.529 LBS)
Product Height2.25 IN
Product Length7.5 IN
Product Width2.4 IN
Country of OriginGermany

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