GENERAL KNOWLEDGE

Detailed explanation-1: -A photometer is therefore also dubbed a “lux meter”, because it measures the illuminance. Different devices are available for all applications: multifunction measuring instruments for measuring light and IAQ parameters. Lux meter with connectable probes.

Detailed explanation-2: -Lighting professionals use a light meter (also called an illuminance meter or lux meter) to measure the amount of light in a space/on a particular work surface.

Detailed explanation-3: -Using the light meter is simple. After taking the cap off the sensor, simply place it on a surface where a task is carried out such as the centre of a desk. It is important the sensor is placed on the surface as this is where the light is reflected into the user eye and represents the true level of light they receive.

Detailed explanation-4: -The candela (symbol: cd) is the SI base unit of luminous intensity; that is, power emitted by a light source in a particular direction, weighted by the luminosity function.