In many industrial work environments and sensitive ecological environments the ambient noise level is of great concern. In the work environment, WH&S laws and Australian Standards state maximum noise levels that should be endured and for the environment we occasionally want to ensure that our noise levels are not affecting fauna in their natural habitat. To ensure compliance in these and other areas the normal approach is to measure the noise level with a sound level meter at different times and on an ongoing basis. The problem with any electronic measurement is whether or not the measurements taken are accurate. In the case of sound level, a 3dB difference between readings equals twice the noise intensity, so any inaccuracy makes a large impact. EG if we measure the noise level at 83dB, we would say that the noise is acceptable for a normal worker for 8 hours. However if that reading was incorrect and the noise was actually 86dB, then this noise would only be acceptable for half as long. This is why the calibration of sound level meters is extremely important. TEX Onsite can calibrate your meters on site and provide a report comparing your meter’s readings to our proven unit, to help ensure your measurements are correct, your staff are safe and you remain compliant.