B&K 2250 Light Manual de usuario descargar pdf (Pagina 34)

Hand-held Analyzer 2250 Light – User Manual

fluctuating sound pressure level. It is a measure of the averaged energy in a varying sound

level. It is not a direct measure of annoyance, though extensive research has shown that L

correlates well with annoyance.

is measured directly with any SLM. If an A-weighting filter is used, it is expressed as L

Aeq

the measurement of the equivalent continuous sound level using the A-weighted filter network.

A full range of measurement parameters is given in Appendix B.

4.2 What is the Hand-held Analyzer?

The hand-held analyzer is a versatile hardware platform suitable for covering a wide range of

different applications. Together with Sound Level Meter Software for 2250 Light BZ-7130, it

is a Class 1 modular precision integrating-averaging sound level analyzer with an easy to use

interface for quick and simple measurement setups.

4.2.1 Sound Level Meter Software for 2250 Light BZ-7130

Sound Level Meter Software for 2250 Light, BZ-7130 allows you to measure a comprehensive

set of parameters used for rating noise in terms of its impact on the environmental and working

environments and on occupational noise evaluation.

The more commonly used parameters, which cover a large range of applications, are either

instantaneous measured parameters (available at any time) or timed measured parameters

(measured within a controlled time interval):

Timed Measured Parameters

• Equivalent Continuous Sound Levels (L

– example: L

Aeq

)

• Moving (or sliding) Equivalent Continuous Sound Levels (example: L

Aeq,T,mov

and

Aeq,T,mov,max

)

• Peak Sound Levels (L

peak

– example: L

Cpeak

)

• Maximum Time-weighted Sound Levels (L

max

– example: L

AFmax

)

• Minimum Time-weighted Sound Levels (L

min

– example: L

AFmin

)

• Percentile Levels (L

– example: L

AF90.0

)

• Sound Exposure Level (L

)

• Sound Exposure (example: E)

• Daily Noise Exposure Level (example: L

ep,d

or L

EX,8h

)

• Noise Dose (example: based on ISO standards: Dose; based on US standards: DoseS5)

• Number of Peaks (for example, #CPeaks(>140 dB))

• Time Weighted Average (for example, TWA)

• Level Average with Exchange Rates 4, 5 or 6 (example: LavS5)

• Weather data (requires a weather station connected)

• GPS data (requires a GPS device connected)

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