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The movement of industrial airborne particles such as smoke, dust or odour, is often much more complex than wind directions and speeds indicate. In most cases it is desirable for the pollutant to be highly dispersed, thereby staying under allowable limits, and avoiding issues with your neighbours. The factors that are most likely to effect the dispersion of a polutant are net wind speed and direction, the variability of wind speed and direction and inversion layers. |
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Relative Humidity can be calculated with a wet bulb thermometer and a dry bulb thermometer, using a psychrometric chart as below. Wet-bulb temperature is measured using a thermometer, with the glass bulb or sensor tip wrapped in a wick, which is kept wet. |
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Relative Humidity is the most commonly used measurements of moisture content in the air. The key to understanding relative humidity is to understand that it is a measure of the ‘actual humidity’, relative to the maximum possible humidity at a given temperature. Let’s explain it a bit further. |
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The dew point temperature, commonly referred to as the ‘Dew Point’, is a measure of the amount of moisture in the air. Consider the air to be like a big sponge that can soak up moisture. Also consider that this ‘sponge’ can hold different levels of moisture at different temperatures. As the air gets warmer it is able to hold more moisture. Conversely, the air can hold less moisture as it cools. |
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How and where to site a weather station is one of the most frequently asked questions. The main determinants of how & where to site a weather station and sensors are the intended application, and the surrounding environment of the desired location itself. |
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