Issuu on Google+

Using Effectively Light Meters Plus The Options There are a wide range of industrial uses in the form of photometric detectors also referred to as light meters. Their objectives include switching off or lowering the output level of luminaries inside a structure, monitoring energy usage on a constant basis. For many types of buildings this considerably eases the energy used. In order to keep a location brightly lit to avoid detracting aesthetically from an area, the meters also measure the amount of light used. In urban areas, light pollution is detected in order to prevent one source of light masking another, as an example, when the lighting from a bright building mask the landing lighting effects from an airport. Measuring an Extended Light Source Coherence and directionality is how lumination sources are generally characterized. These determine the direction and intensity of the lighting source. A laser beam as an example would be classified as being both coherent and directional. The total amount of light power that is being emitted can be measured using a small aperture detector located directly in front of the light source beam. Dispersal has limitations because the lumination is coherent. The beams power falls off linearly through distance. The attenuation aspect is so tiny that distance has a lesser influence on measurement than for a non-coherent source. The concentration of non-coherent sources attenuates as the square of the distance. The measurement difference of a few feet or even a few miles has minimal effect on the overall measurement distance for very distant sources for example the sun. Near-distance point sources are very standard. Some examples are light bulbs, LEDs, and corresponding sources. In all directions these light sources would certainly radiate similarly. Because a total flux capture device should enclose the light source, gauging the total output level of a point source is generally unrealistic. Preferably instead, a photo detector is placed at a fixed range. A fixed area of the radiation sphere is detected using the aperture. As a result, the total intensity at the measurement distance can be assessed by dividing the measured amount by the area of the aperture in steradians. Additionally, by using the square law against the measurement distance, the whole flux output of the source can be determined from the measurement. Calibrating a Light Source ANSI/NEMA FL 1 - 2009 is the common standard for calibration which is measured using the Flashlight Basic Performance Standard. To be able to give consistent results for any measurement scenario, this standard describes a consistent set of measuring procedures. Municipal restrictions specify building emissions with the FL 1 or a similar standard. Quite a few industrial applications utilize this standard too. Spectral Analysis Some applications of measurements require that only particular light frequencies be analyzed although many applications basically measure the entire range of the apparent bulb. For example, an actual spectral profile is emitted when using photography lamps and that will be based on the color of the tint. In other applications, specific wavelengths must be filtered from others. Light Allied Scientific Pro

Page 1

Using Effectively Light Meters Plus The Options detected in material analysis at a specified frequency identifies the material component for instance. Portable Equipment Working with bulky computational equipment, in the past was how the spectral analysis was identified. Even a Smartphone can be utilized today can be used for spectral analysis. Along with fist-sized light meters, technicians can perform advanced light detection and spectrometry quickly, and in many different environments. These types of detection programs seem to be finding their way into a lot more industrial applications in this manner. Allied Scientific Pro will help you increase the accuracy of your measurements with the best light meters on the market. For much more info on Allied Scientific Pro, pay a visit to them at their website,

Document Tags: light meters for sale, led light meter, light meters for photography, light meters

Allied Scientific Pro

Page 2

Using Effectively Light Meters Plus The Options