• Thiết bị đo độ rung Fluke 820-2

  • Đăng ngày 29-07-2016 05:36:16 AM - 1455 Lượt xem
  • Giá bán: Liên hệ

  • Identifying the running speed of rotating equipment can be difficult, but the Fluke 820-2 LED Stroboscope simplifies the process allowing you to perform stop motion diagnostics without actually stopping, or making contact, with the machine you are working on.


Số lượng
  • 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

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 LED 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
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

 

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