Measuring Noise Exposure
Using the dBadge Noise Dosimeter
All versions of the dBadge Noise Dosimeter - Standard, Plus and Pro, along with the Intrinsically Safe versions - operate in the same way. The only difference is in the measurements that are available for download.
1. Charge the dBadge
The dBadge has batteries that will operate for up to 35 hours between charges. The dBadge takes 6 hours to charge from flat. Half an hour charge is enough for 8 hours of measurement.
To charge the dBadge simply slot it onto the the charging block.
To calibrate the dBadge, remove the windshield and fit the dosimeter's microphone into the Calibrator cavity. When the Calibrator is switched on the dBadge will automatically switch into Calibration Mode.
3. Mount the dBadge on the Worker
The dBadge noise dosemeter is mounted on the worker's shoulder, close to the ear, monitoring the sound levels where it matters.
Use the clips provided (already attached to the dosemeter) to clip it on to the worker's overalls or clothing.
The dBadge should be mounted on the worker before the measurement process is started to avoid false noise events.
Noise Dosimeter Clip Mount
4. Start the Measurement
The dBadge has just two buttons, one on either side. To start the measurement, press and hold both buttons for three seconds.
To stop anybody from accidentally stopping the measurement or even purposefully tampering, the keys can be locked. This also removes the sound level from the display as this can tempt people to shout or whistle at the microphone to see the effect.
Start by Smartphone
Using the buttons to
start a noise measurement
5. Stop the Measurement
The dBadge should be left to measure for the full working shift so that you get the full noise exposure. You can measure for a shorter period and then calculate the exposure, but far better to measure it instead.
Stopping the dBadge is similar to starting it. Simply press the two buttons and hold for three seconds. Of course you have to unlock the keypad first if you chose to lock it.
Alternatively, you can use the Airwave application to stop the measurement.
6. Viewing the Results
The main noise parameters (LAvg, TWA, Leq, LEPd, etc.) can now be viewed on the dBadge's display. It simply cycles through the values on the display. All you need to record is the LAvg, TWA, Leq, LEPd (depending on regulations), duration and Peak. If you want more than this then it is better to download to a computer using the software provided, or to view the results on a smartphone using the Airwave application.
Transferring the measurements to a computer gives the benefit of generating reports and long term storage.
To download measurements from the dBadge, connect the docking station to a computer and place the dosemeter in the left-hand position.
You can use the Download Utility program (included with the DB2 kits) to download the measurements to an Excel style spreadsheet. If you have the optional Insight software then this can also be used to download the measurements.
USB Dock and Charger