General Description; Principle Of Measuring Accumulated Noise Exposure - TES -1354 Instruction Manual

1. GENERAL DESCRIPTION

Thanks for your selecting Personal Noise Dosemeter. To
ensure that you can get the most from it we recommend that you
read the manual carefully before use.
The personal noise dosimeter is test equipment to evaluate the
noise condition of working environment by measuring the
accumulated noise exposure.
ensure the related noise regulation is followed or decide whether
or not to apply certain noise reduction action to avoid the acoustic
trauma and noise-induced hearing loss occurs to the working
personnel.
2. PRINCIPLE OF MEASURING ACCUMULATED
NOISE EXPOSURE
DOSE is a parameter used to quantify noise exposure
measured during a period, in turns of % noise exposure relative to
90dBA for 8 hours.
This is known as the Criterion.
available such as 100% DOSE = 85dBA for 8 hours to meet
legislation in different countries.
If the person stayed in this environment for 4 hours, he
would receive 50%DOSE.
Also if the noise level was say 93dBA, 3dB higher, a 100% DOSE would be
accumulated in only 4 hours, The above example is for a dosemeter with 3dB
Exchange Rate, where a 3dB increase in sound level corresponds to a
doubling energy. A dosemeter with 5dB Exchange Rate is also, available
where the sound must increase by 5dB to double the dose as required to meet
noise legislation in some countries.
i.e. 100% DOSE = 90dBA for 8 hours
With this test data, company can
Other criterion are
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