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Formula of calculating lux to watts. P (W) = 0.09290304 x Ev (lx) x A (ft2) / η (lm / W). It means that the power in watts is calculated by multiplying 0.09290304 by the illuminance in lux, and the result is divided by the luminous efficacy in lumens per watt. P (W) = Ev (lx) x A (m2) / η (lm / W). It means that the power in watts is ...
The testo 540 lux meter: compact, easy-to-use, precise The testo 540 light meteris a compact entry level model designed specifically for carrying out spot checks in the workplace, shops and offices. The light sensor is modelled on the spectral sensitivity of the human eye and is ideal for measuring lighting conditions in a variety of different workplaces.
The testo 540 lux meter is a pocket-sized entry level model designed specifically for carrying out spot checks in the workplace, shops and offices. The light sensor is modelled on the spectral sensitivity of the human eye and is ideal for measuring lighting conditions in a variety of different workplaces.
It can be measured in foot candles (ftcd, fc, fcd) or lux (in SI units). Following are the equations used to express relationship between various units of measurement used for illuminance. 1 Lux = 1 Lumen/meter 2. 1 foot candle (ftcd, fcd) = 1 lumen/sq. ft = 10.752 lux. 1 lux = 1 lumen/sq. meter = 0.0001 phot = 0.0929 foot candle.
El lux (símbolo: lx) es la unidad derivada del Sistema Internacional de Unidades para la iluminancia o nivel de iluminación. [ 1 ] [ 2 ] Equivale a un lumen / m² . Se usa en la fotometría como medida de la iluminancia, tomando en cuenta las diferentes longitudes de onda según la función de luminosidad , un modelo estándar de la sensibilidad del ojo humano a la luz.
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The testo 540 lux meter: compact, easy-to-use, precise The testo 540 light meteris a compact entry level model designed specifically for carrying out spot checks in the workplace, shops and offices. The light sensor is modelled on the spectral sensitivity of the human eye and is ideal for measuring lighting conditions in a variety of different workplaces.
