Illuminance measurements

Proper lighting in work places represents one of the most crucial factors that have an impact on comfort and efficiency in task performance. EN 12464-1:2021 set outs the requirements for lighting intensity and quality in indoor work places so as to ensure optimal working conditions. This article discusses the key principles of the standard and aspects of its implementation. Importance of EN 12464-1:2021 Adopted by the European Committee for Standardisation (CEN) on 9 May 2021, EN 12464-1:2

In an era of increasing electricity costs, influenced by, among other things, high inflation, legal conditions and ever higher energy production costs, individual consumers, businesses and local governments have been mobilised to seek solutions to reduce expenditure and electricity demand. For some years now, one very popular way has been to replace lighting sources. After all, nothing feeds the imagination (and has a decisive influence on decisions to invest in energy efficiency) more than the

The article presents the requirements contained in legal acts and standards for emergency lighting. It also touches on the aspects of performing measurements of emergency lighting intensity and the most common problems faced by the measurement personnel. 1. Introduction Nowadays, we can not imagine life without electric lighting. Light plays a huge role in our lives. It allows you to "extend the day", with positive and negative effects. We are so accustomed to artificial lighting

Using the most modern optical solutions and normative recommendation concerning road lighting, the light should be directed exactly to the places of the street which should be illuminated. In this way, the frequent problem of "polluting" urban space with poorly chosen street light, which unnecessarily targets the sky or windows of buildings, disturbs the peace of their residents is eliminated. The application of the EN 13201:2015 standard when designing road lighting is to ensure safet

The relationship between light intensity and color of light, and the performance of employee is confirmed by the results of scientific research. They show that by increasing the illuminance from 300 to 500 lx in many workplaces, you can achieve an efficiency increase of 8%, and increasing the lighting intensity to 2000 lux increases efficiency by up to 20%. However, the appropriate color of light positively affects the psyche, well-being and occupational safety. The article presents the qua

No clear requirements have been specified for the measurement of LED light sources in applicable standards. However, it should be noted that the greater the difference between the sensitivity curve of the light meter photometric head and the required one, the more the obtained results are dependent on the spectral characteristic of the radiation being measured.  Due to its parameters, Sonel light meters of classes A and B work extremely well when performing  LED illuminance measurement

Sonel SA introduced  three new illumination meters, the first of them LXP-2 is the direct successor to the LXP-1, and it will satisfy the needs of professionals responsible for illumination of the workplace. For those who require measurement accuracy at a much higher level, for example, when measuring the light intensity of escape routes where is required  accuracy at 0,5 lx level, Sonel S.A. has developed two new instruments LXP-10B in Class B with a resolution of 0.01 lx and LXP-10A

Our perceptive capability and psychophysical condition depend to a very large extent on the surrounding environment. Light stimuli are decisive factors in the psychological comfort. Prolonged exposure to artificial light may accelerate fatigue and contribute to eyesight defects and other diseases. Negative impact of improper lighting on people is particularly important in terms of safety and work efficiency. The perception of light stimuli, although dependent on the individual characteristics of