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In Western Australia there is a requirement in the WA Environmental Protection (Noise) Regulations 1997 to monitor blasts using instruments capable of measuring much lower frequencies than standard sound level instruments.

To accurately measure the peak level of a blast, very low frequency sound energy contained in the blast must be picked up by the sound level meter, which requires microphones with extremely low frequency capabilities and electronics with very low cut-off frequencies - 2Hz or less.

Brüel & Kjær offers two models of meter suitable of meeting these stringent requirements - the B&K 2260 and B&K 2250 (except the 2250 'Light').

The advantage of these meters is that unlike some dedicated blast monitors that measure only the lower frequencies, the B&K 2260 and 2250 can be used for all other types of noise assessment (environmental, occupational, industrial) when not being used for blast measurement.

With the appropriate accessories and knowledge of the instrument setup procedures, 2260 and 2250 users can quickly convert their instruments from standard sound level meters to state-of-the-art air blast overpressure meters in accordance with the WA noise regulations.

NVMS will also soon be offering blast monitor users the opportunity to have their B&K meters calibrated at very low frequencies - as required by the regulations - at our Perth calibration laboratory.

For more information on setting up your B&K meter for blast measurements, please contact us.

For more information on dedicated monitors specifically for blast and ground vibration measurements, please see our Range of Texcel instruments.

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To contact NVMS Solutions about Blast Monitors use Get a quote.