Measure working environment noise

To guard against the risk of hearing damage of operators working in an environment with high noise levels, measure the equivalent sound level and calculate values for evaluation. Use a sound level meter of the NL-42 series and measure the equivalent sound level. Store results an SD card and import to a computer. Spreadsheet software can then be used for simple tabulation of imported data.

■Performing frequency analysis

To guard against the risk of hearing damage of operators working in an environment with high noise levels, measure the equivalent sound level and calculate values for evaluation. The sound level meter NL-42 can be used together with the octave band and 1/3 octave band real time analysis program NX-42RT to analyze the frequency ranges that are critical for noise countermeasures. Store results on SD card and import to a computer. Spreadsheet software can then be used for simple tabulation of imported data.

■Performing frequency analysis

To guard against the risk of hearing damage of operators working in an environment with high noise levels, measure the equivalent sound level and calculate values for evaluation. The octave analysis function of the sound level meter NA-28 can be used to analyze the frequency ranges that are critical for noise countermeasures. Store results on CF card and import to a computer. The AS-60/AS-60RT data management software for environmental measurement can then be used for simple tabulation of imported data.