May 2015 Page 10 of 51
and safety pins. This consists of a strap with four hooks which loop over the rim of the hard
hat.
5.2 The Microphone & Windscreen
During use, it is essential that the dBadge2 is fitted with the Windscreen (part number
207069B, supplied). The Windscreen protects the microphone from potential erroneous
results due to air movement passing over it but also helps to protect from dust ingress,
moisture or minor impact damage. It will not normally be necessary to remove the microphone
but to do so unscrew anticlockwise. When refitting take care since it has a fine thread and do
not overtighten; finger tight is sufficient.
To calibrate the dBadge2 it is necessary to remove the Windscreen to expose the
microphone. Grip the black plastic body and pull in the direction of the arrow indicated on the
tab of the Windscreen. Do not pull on the foam which may become detached and hence
need replacing (replacement pack of 5, part number DB2WS)
Following calibration (see Section 6.2) refit the Windscreen by aligning the tab with the recess
in the main body of the dBadge2. An audible “click” confirms that it is securely in place.
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