What is illuminance meter?
Table of Contents
What is illuminance meter?
Illuminance meter products are single element detectors that measure photometric brightness falling upon a surface. It is measured in footcandles or in lux. The Konica Minolta illuminance meters measure the amount of light that strikes a surface.
What device measures luminance?
Photometer
Photometer A photometer is an instrument that measures light intensity. It can be defined as an instrument that measures visible light. Luminance measurements are used for products such as traffic lights and automobile tail lights.
How do I check my lux level?
How to Measure Light Intensity Using a Light Meter
- Measure Ambient Light In the Room. To begin, turn off any lighting in the room you’re about to measure.
- Turn On the Lights, Take Your Measurement.
- Note Your Differential Reading.
- Check Other Areas of a Room.
How do I check my illumination level?
What is the minimum lux level?
500 lux – Retail spaces should have this as a minimum light level, as should general office spaces. This level should be suitable for prolonged work on computers, machinery and reading. More than 500 lux – If you have an area where intricate work is being carried out, then very high lux values may be needed.
What is 1 lux in light?
Lux is a standardised unit of measurement of light level intensity, which is commonly referred to as “illuminance” or “illumination”. So what is exactly 1 lux? A measurement of 1 lux is equal to the illumination of a one metre square surface that is one metre away from a single candle.
How is illumination calculated?
Lighting Calculation – Summary Calculate the amount of lumens you need. Multiply the area in square meters by the lux, or the area in square feet by the footcandles. Work out how many bulbs you need. Divide the number of lumens by the number of lumens delivered by each bulb.
How do you calculate lux level?
To calculate this result:
- Compute the area of the room: area = 4 m × 5 m = 20 m²
- Choose the right amount of lux you need. For a studio, the recommended value is 323 lx .
- Find the result using the formula: lux = lumens × area = 323 lx × 20 m² = 6,460 lm.
How do you measure illuminance?
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. The light meter has a sensor that measures the light falling on it and provides the user with a measurable illuminance reading.
What is the unit for illuminance?
lux
lux, unit of illumination (see luminous intensity) in the International System of Units (SI). One lux (Latin for “light”) is the amount of illumination provided when one lumen is evenly distributed over an area of one square metre.
What is standard lux level?
The outdoor light level is approximately 10000 lux on a clear day. In a building in the area closest to the windows the light level may be reduced to approximately 1000 lux. In the middle area it may be as low as 25 – 50 lux….Indoor Light Levels.
| Activity | Illuminance (lx, lumen/m2) |
|---|---|
| Easy office work | 250 |
| Class rooms | 300 |
How is lux level measured?
One lux is equal to one lumen per square metre: 1 lx = 1 lm/m2 = 1 cd·sr/m2. A flux of 1000 lumens, spread uniformly over an area of 1 square metre, lights up that square metre with an illuminance of 1000 lux. However, the same 1000 lumens spread out over 10 square metres produces a dimmer illuminance of only 100 lux.
How many lux is winter sun?
The illuminance level produced by an overcast sky may reach 10 000 lux in the winter and as high as around 30 000 lux on a bright overcast day in the summer.
