FLUKE-820-2 - FLUKE - Datasheet.Directory

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 com-

ponent under measure must be visible, and have an

identifying mark that can be used as a point of refer-

ence. 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).

Fluke 820-2 LED

Stroboscope

Rugged, compact and easy-to-use

Investigate and observe potential mechanism failure with confi-

dence 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 diagnos-

tic 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

Technical Data

2 Fluke Corporation Fluke 820-2 LED Stroboscope

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 collec-

tors and sliding rings. Find mistakes on speakers,

record players, magnetic tape recorder, relay,

contact rectifiers, power switch, phone selector,

home appliances, kitchen equipment, ventila-

tors, turbines, vibrators, counters, speakerphones,

sorting-machines, centrifuges, electrical tools and

equipment.

• Find errors caused by work process on manufac-

turing 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, pres-

sure/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.

Automotive and motor manufacturing

• Adjust the ignition and the valves. Check the valve

lever movement, valve spring vibration, and injec-

tion 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, transmis-

sion shafts, springs, wind generators, and light

machines.

Optics manufacturing

• Test camera closures. Control transport of film cam-

eras and projectors. Observe the drive elements,

cooling fan, and the return flow of movie projec-

tors. Investigate the work process on lens-grinding

machines.

• Perform movement studies seen in the fast move-

ment of objects through film recordings.

Print, paper, and cardboard manufacturing

• Observe the passer marks and control the print-

ing process. Watch multicolor printers in order to

assess the print quality relative to the rate.

• Check on package machines, folding box automa-

tion, 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).

3 Fluke Corporation Fluke 820-2 LED Stroboscope

Medical

• Observe the drilling process in medical institutions.

• Set the responsive assets on light pulses of differ-

ent 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.

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.

Technical 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 (0.53 lb)

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



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 Approx 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

Ordering information

Fluke-820-2 LED Stroboscope

Includes

820-2 LED Stroboscope, protective

case, external trigger connector

Fluke. Keeping your world

up and running.®

Fluke Corporation

PO Box 9090, Everett, WA 98206 U.S.A.

Fluke Europe B.V.

PO Box 1186, 5602 BD

Eindhoven, The Netherlands

For more information call:

In the U.S.A. (800) 443-5853 or

Fax (425) 446-5116

In Europe/M-East/Africa +31 (0)40 267 5100 or

Fax +31 (0)40 267 5222

In Canada (800)-36-FLUKE or

Fax (905) 890-6866

From other countries +1 (425) 446-5500 or

Fax +1 (425) 446-5116

Web access: http://www.fluke.com

Speciﬁcations subject to change without notice.

Printed in U.S.A. 9/2014 6000226c-en

Modification of this document is not permitted

without written permission from Fluke Corporation.