Digital Personal Noise Dose Meter Dosimeter with Direct Read Out Results Function (1600443580034)

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Product Overview

Description


Digital Personal Noise Dose Meter Dosimeter with Direct Read Out Results FunctionProduct Description


 


 



Product Description


Principle of Measuring Accumulated Noise Exposure:

 

DOSE is a parameter used to quantify noise exposure measured in a period, during turns of % noise exposure relative to 90dBA for 8 hours.

 

i.e. 100% DOSE = 90dBA for 8 hours

 

This is known as the Criterion. Other criterion are 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 dose meter with 3dB Exchange Rate, where a 3dB increase in sound level corresponds to a doubling energy.

 

A dose meter 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.

 

Features:


The Noise Dose Meter measure the frequency weighted noise exposures and peak sound levels simultaneously.
* Simple operation, including direct read–out of results.
* Eight built–in standard dose measurement setups : OSHA80, OSHA90, MSHA-80, MSHA-90, DOD, ACGIH, ISO85 and ISO90.
* Nine user – defined measurement setups.
* A single sound level meter (SLM) setup.
* A single sound level meter (SLM) setup.
* 50 dose (DATA) result stores.
* Download of setups from PC to the meter.
* Keypad lock protects meter against accidental operation.
* Timers support pre–selection of measurement time and duration.
* Use USB data output to connect with PC.
The meter is ideal for quick on–site surveys and for monitoring personal noise exposure in accordance with European ISO or USA OSHA, MSHA, DOD AND ACGIH standards.
The meter is two overlapping measurement ranges : 60 – 130 & 70 – 140dB, A & C RMS weightings, Linear & C Peak weightings, Fast & Slow time weightings, and energy exchange rates (Q) of 3, 4, 5 & 6. In dose measurement mode, it display % dose, % dose projected for an 8 hour period, peak level and measurement duration.
For countries that are subject to European Union regulations or the equivalent ISO standards,  the  meter  measure  the  daily  sound  exposure  level  (LAeq,8hr,Pa2h according to IEC 61252, which is identical with the L EX,8h  required by ISO 1999), while for USA OSHA/MSHA regulations they measure the Time Weighted Average level (TWA).
When used as a sound level meter it display sound level, time–averaged (L Aeq) sound level, peak and sound exposure level (SEL).
The meter is automatic run timing facilities controlled by the built–in clock and time–history recording capabilities. Sampling times can be specified between 1s and 1 hour, while storage is 120000 data points.
The meter is able to measure and save up to five specified Ln values (Statistical noise levels). Run duration, start and stop times preset, and other setting via the meter keys or software.


 


Technical Specifications:













































































































































Standard Applied



IEC61252, ANSI S1.25 – 1992 for dose meter and sound exposure meters. IEC 61672-1-2013 Class 2



Microphone



1/2-inch electret condenser microphone with 31-inch integral cable



Display



Liquid Crystal Display



Measurement Ranges (Linearity and Indicator ranges at 4KHz)



60 – 130 : 60 – 130dB (A and C)



70 – 140 : 70 – 140dB (A and C)



Peak Ranges (C–weighted or Linear Peak over the top 40dB of each measurement range



60 – 130 : 93 – 133dB Peak



70 – 140 : 103 – 143dB Peak



Frequency Weightings



RMS Detector: A or C



Peak Detector: C or Z (Linear)



Time Weightings



Fast and Slow (RMS detector)



Exchange Rate



3, 4, 5 or 6dB



Stabilization Time



10 seconds from power on



Threshold and Criterion Levels (From the setup, predefined in the built – in setup according to applicable standards)



User–defined setups in the following ranges :



Threshold Level : 70 – 90dB in 1dB steps



Criterion Level : 80, 84, 85 or 90dB



Criterion Level : 80, 84, 85 or 90dB



At 0.1dB above the top of the selected measurement range



At 0.1dB above the top of the selected measurement range



Under–Range Indications



High Level Detector



115dB



Keypad Lock



Lock and unlock by pressing key combinations: Up and right arrows to lock; left and down arrows to unlock



Clock



Real–time clock with calendar



Memory



Results from 50 measurements can be stored for later viewing and download



Measurement Control



Measurement Duration : May be set to 5, 10, 15, or 30 minutes or 1, 2, 4, 8, 10, 12, or 24 hours



Timers



Up to 16 timers(automatic start and stop)can be set(maximum up to one month ahead of measurement time)



Timer Controlled Started / Stop



Set up from the PC software or meter keypad



Logging



All measurement parameters values can be logged



Logging Period (LP)



1s, 2s, 5s, 10s, 15s, 20s, 30s, 1min, 2min, 5min, 10min, 15min, 20min, 30min or 60min



Logging Capacity



120000 values can be stored at any one time



Setup



Eight built–in (predefined) default setups are included. Nine additional user–defined setups can be stored



Output



USB interface



Power Supply



4x1.5V AAA Size (UM-4)Battery



Battery Indicator



Symbol indication battery voltage level in 4 steps. Indicator flashes when voltage is insufficient for operation



Operating Temperature & Humidity



0 – 50ºC (32 to 122ºF) ,10 – 90%RH



Storage Temperature & Humidity



-10 – 60ºC(14 to 140ºF) ,10 – 75%RH



Size



140x72x34mm



Weight



Approx. 350g (including batteries)






Product picture


 


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