Calibrator - Most regulations state that you should have a calibrator.Class 1 or Class 2? - The most popular for environmental work is Class 1.The following decisions do need to be made The Optimus Green is already optimised for environmental noise surveys and so is adequate for most surveys without any additions. It can be fitted to a standard camera tripod, or we can provide you with a suitable one. A tripod mount is included on the back of the meter. It is better to mount the meter on a tripod for this type of measurement. It will then stop, store the results and start again automatically. The meter will now run for the specified period.
To make this type of measurement, use the Menu key to set the meter to make repeating measurements of the required duration. Adjustable smoothing factors are available to avoid triggering on very short term noise.įor many environmental noise surveys, you need periodic (usually 5 minute, 15 minute or 1 hour) measurements showing values such as the Leq and the L90. You can even set it to trigger when the trigger level is exceeded in just one band to detect tonal noise. For example, you can set it to make a recording when the level exceeds 65dB(A). The Audio Recording can be set to start automatically when a certain level is exceeded. To start a recording manually press the Audio button during a measurement. Audio recordings can be started manually or when a trigger level is exceeded. The meter can record the audio - so you can listen to the actual sound later. When you are happy that you have measured for long enough simply press the Stop key. The meter will start measuring the LAeq and other parameters that are needed for environmental noise surveys. If you have the data logging option fitted then the meter will ask if you want to make a Voice Tag recording. Press the Start key, shown on the right to begin the measurement process.
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