Stroboscopes

Stroboscopes are highly stable industrial quality instruments for non-contact RPM measurement as well as for inspection and observation of moving parts.

General Applications

 

  • RPM measurement
  • Measuring the number of oscillations
  • Detecting slippage
  • Motion analysis by freezing or slowing down actions

Applications

 

  • Electrical industry
  • Mechanical engineering
  • Automotive industry
  • Textile industry
  • Optical industry
  • Printing and paper industry
  • Ship-building and aircraft
  • Chemical industry
  • Medical industry
  • Mining industry

Principle

If a periodic flash is aimed at a rapidly rotating or oscillating object at always the same position, the object appears to stand still or to move in slow motion.

RPM Determining

The true RPM (min-1):
All stroboscopes give the illusion of stopped motion when flashing in submultiples of the true speed.



To obtain the correct RPM:
Turn frequency always from the highest RPM downwards. When the first single image appears, read the true RPM. To verify this, double the flash rate, you then might see 2 images. If the flash rate, however, is below the actual RPM value by 1/even numbers, a freezed motion with only one image will appear.



Measuring higher RPM than the stroboscope-range using harmonics:
All instruments can be used also to measure higher RPM by using the images effect.


For example:

  • Range up to 20000 min-1
  • Rotating object 40000 min-1
  • Images 2 times seen


 
 

Phase Shifter

Phase shift adjustment permits movement of objects to desired position for convenient observation.

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