Tuesday, April 24, 2018

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Laser Level Measurement

A part of level measurement using echo.

The least-common form of echo-based level measurement is laser, which uses pulses of laser light reflected off the surface of a liquid to detect the liquid level. Perhaps the most limiting factor with laser measurement is the necessity of having a sufficiently reflective surface for the laser light to “echo” off of. Many liquids are not reflective enough for this to be a practical measurement technique, and the presence of dust or thick vapors in the space between the laser and the liquid will disperse the light, weakening the light signal and making the level more difficult to detect.

However, lasers have been applied with great success in measuring distances between objects. Applications of this technology include motion control on large machines, where a laser points at a moving reflector, the laser’s electronics calculating distance to the reflector based on the amount of time it takes for the laser “echo” to return. The advent of mass-produced, precision electronics has made this technology practical and affordable for many applications. At the time of this writing (2008), it is even possible for the average American consumer to purchase laser “tape measures” for use in building construction.


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Comments (1)Add Comment
written by Sandra, August 29, 2015
I am really impress with the application of laser light into level or measuring distance device. It make the work easier and faster with higher accuracy. I bought a level from DEWALT a few weeks ago.I used it to install interior doors and kitchen cabinets. It's a great product and easy to use.

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