{"id":40235,"date":"2022-09-14T11:15:31","date_gmt":"2022-09-14T04:15:31","guid":{"rendered":"https:\/\/techmaster.com.vn\/?p=40235"},"modified":"2022-09-14T11:27:00","modified_gmt":"2022-09-14T04:27:00","slug":"light-meter-calibration","status":"publish","type":"post","link":"https:\/\/techmaster.com.vn\/en\/light-meter-calibration\/","title":{"rendered":"Light Meter Calibration"},"content":{"rendered":"

\"Light<\/a><\/span><\/p>\n

Ligh Meter Calibration in Techmaster<\/span><\/p>\n

Illumination, also known as illuminance, is one of the important factors in daily activities, production, .. To check illuminance, light meter is an effective tool. This device will provide measurement results, through which users will accurately judge the illuminance. This device will provide measurement results, through which the user will make an accurate assessment of the illuminance. Thereby, users can have an accurate assessment of environmental quality to take appropriate treatment measures.<\/span><\/p>\n

Therefore, it is extremely important to ensure this equipment operates stably and correctly. The illuminance meter therefore needs to be calibrated periodically. Let’s learn about the illuminance meter calibration procedure at Techmaster.<\/span><\/p>\n

1. Definition of illuminance<\/strong><\/span><\/h2>\n

1.1 Illuminance<\/strong><\/span><\/h3>\n

Illuminance<\/em><\/strong>\u00a0is the total\u00a0luminous flux\u00a0incident on a surface, per unit\u00a0area.<\/span><\/p>\n

According to TCVN 7144-1<\/span><\/p>\n

– Household illumination ranges from 200-500Lux depending on the area<\/span><\/p>\n

– Illumination for part processing is from 300-750Lux<\/span><\/p>\n

– Illumination during quality inspection needs 1000Lux<\/span><\/p>\n

– Lighting when making gems needs to be at least 1500Lux.<\/span><\/p>\n

1.2 Lux<\/strong><\/span><\/h3>\n

Lux is a unit of illumination equal to the direct illumination on a surface that is everywhere one meter from a uniform point source of one candle intensity or equal to one lumen per square meter.<\/span><\/p>\n

1.3 Illuminance formula<\/strong><\/span><\/h3>\n

The illuminance formula is calculated as follows:<\/span><\/p>\n

E = I \/ d \u00b2<\/strong><\/span><\/p>\n

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In there:<\/span><\/p>\n

I: brightness intensity<\/span><\/p>\n

d: distance from light source to illuminating surface<\/span><\/p>\n

2. What is light meter ?<\/strong><\/span><\/h2>\n

Simply put, a light meter is a device that measures light. There are two different kinds of light meters\u2014incident and reflective. An incident light meter measures all the light falling onto a subject. Incident light meters help a camera focus on a subject regardless of how light or dark the surrounding background is. Reflective light meters do the opposite\u2014they measure the light reflected by or bouncing off a subject.<\/span><\/p>\n

3. Applications<\/strong><\/span><\/h2>\n

This is a commonly used device in life and production. The light meter is one of the measuring devices used to assess the quality of the environment. This device is often used to check and evaluate the illuminance in offices, factories, schools, hospitals, … These are environments that need to have appropriate illuminance to avoid affecting both health and productivity factors, etc. In addition, the light meter is also used in agriculture for the measurement requirements related to crops.<\/span><\/p>\n

Besides, this device is also used in photography, cinema, architectural landscape design, etc. To help determine the optimal light level for a scene.<\/span><\/p>\n

4. Light meter Calibration Process<\/strong><\/span><\/h2>\n
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4.1 Why Light Meter Calibration?<\/strong><\/span><\/h3>\n<\/div>\n

Light meter is an important measuring device that requires high accuracy. Therefore, calibration of this device is extremely necessary. As it will help ensure stability and accuracy for related operations. Besides, the calibration also helps to detect equipment failures (if any) early for timely correction and repair.<\/span><\/p>\n

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