Sound level meters

Sound is a sequence of waves of pressure that propagates through compressible media such as air or water. (Sound can propagate through solids as well, but there are additional modes of propagation). Sound that is perceptible by humans has frequencies from about 20 Hz to 20,000 Hz. In air at standard temperature and pressure, the corresponding wavelengths of sound waves range from 17 m to 17 mm. During propagation, waves can be reflected, refracted, or attenuated by the medium.[2]

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Created on: 17 May 2013

 Max. & Min. function.  Over & Under range indication.  4-digit LCD display with bar graph.  Frequency weighting characteristic for 2 times per second.  AC signal output.  Low battery indication.  IEC 651 Type 2 & ANIS S1.4 Type 2.