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Casella CEL-621.A2/K1, Integrating environmental real time analyzer kit - CEL-621.A2/K1

Integrating environmental real time analyzer kit - more info check here: http://www.buymeasuringtools.com/Casella-CEL-621-A2-K1-Integrating-environmental-real-time-analyzer-kit-10133363/

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Brand Name: CASELLA Model Number: CEL-621.A2/K1

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Integrating environmental real time analyzer kit

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Casella CEL-621.A2/K1, Integrating environmental real time analyzer kit
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Manufacturer's Link: http://www.casellausa.com/store/productlist.cfm?catID=7E504645411578

Many environmental noise measurements require a complete knowledge of the variable noise level climate over a representative period of time. The 621 meter is designed to satisfy this need as a short term measurement instrument. It can measure the popular max, min, peak and time average levels plus up to 5 statistical or percentile results for the overall run. The wide 120 dB dynamic range means that the user does not need to worry about changing the input range settings as it will always be on the right range. The provision of the three popular frequency weightings and the three time weightings enable many different measurements to be taken by new and experienced users alike to correctly characterize the noise.

For measurements of simple noise levels the instantaneous sound pressure level is often adequate. However, in many outdoor situations the noise levels are too variable or change too quickly to estimate the average level or exceedance levels correctly. The 621 is designed to assist in the correct description of these difficult noise situations by providing the time average noise level with the 3, 4 and 5 dB exchange rates. Changing noise levels are properly integrating into the overall time average answer and displayed as the Leq (with Q=3). 5 LN% values (10%, 50%, 90%, 95% and 99%) are calculated and stored from the instantaneous sound levels. This enables the 621 to correctly assess changing noise levels and provide the appropriate result for many short term community noise level surveys. Additional octave (1/3 oct) band filters in the B or C version of the 621 provide for a comprehensive frequency analysis of tonal noise levels for noise control applications.

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