November 1, 2021

One of the factors that influence safety and work performance is the distribution and intensity of lighting , the lux meter is a tool that helps to ensure that the lighting conditions of that interior space are optimal.

This instrument helps to quickly and easily measure the real and non-subjective luminosity of a certain environment. The luxmeter has a photoelectric cell that absorbs light and then converts it into electrical impulses, which are interpreted and represented on a needle with the appropriate light scale.

Illuminance is the amount of light that can reach a space per air unit, which is measured in lux, taking into account that 1 lux is equivalent to 1 lumen per square meter.

What is a Luxmeter?

The lux meter is a measuring instrument with which the lighting levels can be obtained precisely, the higher the light energy, then, the greater the electrical energy that is used to indicate the illuminance on a screen.

Accurate and quantifiable measurement of light is critically necessary to create the desired results for everyday applications as well as unique applications.

In events such as measuring the amount of light that is present on the surface of a workspace, until emergency exits are adequately lit, light analysis and measurement is a super important step to ensure safety and security. efficiency. To carry out these measurements it is necessary to have a luxmeter, specialized tools to measure the intensity of light that falls on any surface.

What is a Luxmeter for?

This wonderful instrument allows you to measure the lighting that is present inside any space, such as classrooms, laboratories, buildings, work rooms, theaters, but also outdoors, it is also an indispensable tool when exhibiting objects must be preserved. in an exhibition or museum.

At present it is very common for us to hear about the lux meter, it is usually used in different areas of daily life for the precise measurement of light events in different sectors such as business, industrial and commercial, in any place or position of work to determine that hygiene and safety are adequate .

For example, in stores, products must be very well illuminated with the appropriate lux value in order to cause the best optical impression on customers.

How does a Luxmeter work?

The lux meter has a fairly simple operation, it depends on a compound circuit that when receiving a certain amount of light is capable of transforming it into current, you can know the amount of lux depending on the intensity of the electricity.

There are a series of steps that must be followed to achieve the best performance of this tool :

  • The first thing to do is place the photoreceptor, which is responsible for absorbing the light , in front of the light source that you want to measure.
  • Then the appropriate scale must be placed on the luxmeter reader, depending on how strong or weak the light to be measured is.
  • Once that step has been carried out, proceed to press the power button of the reader and wait until the reading appears, for this a few seconds must pass.
  • After the reading appears, the result will be multiplied by the number of the scale that was selected. For example, if a 200 lux scale is chosen and the measurement was 30, the value is 30X200 = 6000.

Through the sensor that contains the lux meter, the value of the light intensity is obtained at a selected point, allowing to know if the light, whether artificial or natural, that is captured by the device complies with the minimum values ​​determined for its adequate conservation.

Uses of the Luxmeter

At present, the most widely used lux meter is the digital one since it has a technology that with the help of software, a list of situations and brightness intensity values ​​can be stored, in this way and for this and many more reasons it goes on to be replaced the analog model.

The most common use that is known of this tool is to make movies and in photography, with it, photographers can adjust the depth of field and the shutter speed in order to obtain a better quality in the photograph . It is also very useful to have a permanent brightness on the screen and to film scenes that require different levels of light.

In addition, it is usually used in situations in which certain health and safety measures must be complied with, it can be used to know if a room or room has adequate light for them to carry out their tasks without damaging their eyesight. In meteorology it is used to measure the luminosity of the sky and to calculate the light that the soil receives in greenhouses, cities, fields and forests .

You should also know that health professionals also make use of this instrument to determine the possibility of an occupational disease due to light deficiency.

Types of Luxmeter

There is a wide variety of luxmeter designs on the market today from the most basic to the most complete and sophisticated, but it should be noted that the most widely used are undoubtedly digital ones that measure both natural and artificial light.

As is to be expected, these devices evolve over time, so much so that there are models that allow data to be stored in order to be able to retrieve them when necessary with the different data of environmental situations. The most common and used are:

  • Digital lux meter

This model allows not only to measure the intensity of light outdoors, but also in internal spaces such as buildings, laboratories, classrooms, theaters, etc. Its working range is from 0 to 100,000 lux, with automatic scale change , allows measurements of the minimum and maximum average, retaining the desired value, has a memory in which measurements can be saved, according to the time, date and place.

  • Mavolux & move monitor

This model is indicated for use in photography studio workshops and in industry, it is ideal for making short distance measurements indoors and outdoors; to be able to measure long distances an accessory must be installed.

  • Multifunction

This type of lux meter brings together several types of meters in one.

  • Fixed mount LXT

This lux meter has a buzzer and is composed of a small wall bracket with a 1.5m cable, a measurement sensor, a digital display and a light transmitter, the area in which it should be used is mainly in daylight. control of the luminosity of production rooms and photography laboratories.

  • PCE-UV34

This type of luxmeter is basically used for measuring the intensity of ultraviolet light radiation.

Light meters are generally small and can be used at various points throughout a certain area or process, for this reason the lighting methods can be configured to better use natural light but at the same time so that the lighting conditions are optimal for a specific application or job.

Characteristics of a Luxmeter

This instrument is a device that can have different scales depending on the amount of light that needs to be measured, in order to have a more correct accuracy in the event that the light intensity is weaker or stronger. Any model of lux meter has certain main characteristics:

  • It is an instrument that can be easily carried anywhere, it is portable.
  • It has a sensor for selenium, silicon, etc. whose spectral response is equivalent to human vision.
  • It has different resolutions, precision, sample rate, ranges, and response.
  • It has a standalone or integrated sensor in which case it supports access to exceptional perspectives.
  • It can measure low levels of brightness , thanks to its automatic zero adjustment.
  • Retention of the maximum values ​​of the measurement data.

The luxmeter has a photoreceptor that is responsible for discovering the intensity of light , transforming the electrical energy, which is then transported to the reader, in addition, the reader has that is responsible for receiving the electrical signal sent by the photoreceptor, transforming it into a measurement. of light and then be displayed on a screen.

Importance of a Luxmeter

In many industrial processes it is of utmost importance to have adequate lighting of the environment, the lack of luminosity can cause damage to the worker’s vision that can range from simple conditions such as eye fatigue, to serious damage such as burn of the retina.

With levels that are too low, employees will be forced to strain their eyes causing dryness and eye fatigue , interfering with the proper performance of work. When, on the other hand, the levels are excessively high, it can also cause serious problems, apart from glare, it can cause retinal burns and long-term blindness.

To avoid this type of inconvenience, it is advisable to use the lux meter, with it the necessary luminous flux will be achieved in any environment and inconvenience and damage to the health and integrity of ourselves and the people around us can be avoided .

Dr. Loony Davis5
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Born and raised in Brussels in an English family, I have always lived in a multicultural environment. After several work experiences in marketing and communication, I came to Smart Water Magazine, which I describe as the most exciting challenge of my career.
I am a person with great restlessness and curiosity to learn, discover what I do not know, as well as reinvent myself daily, someone who is curious about life and wants to know. I enjoy sharing knowledge.
This is my personal project but I also collaborate in other blogs, it is the case, the most important web on water currently exists in the US, if you are interested you can read my articles here.

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