Which lux meter can measure 1 million to 2 million illuminance?

Compact size, light weight

The use of lux meters is very wide, and the timing of use is often in different places, so the small body and light weight of the portable type are the first prerequisites for the lux meter.

Accuracy

The quality of the illuminance meter has an absolute relationship with its accuracy. Of course, it is also closely related to it, so it is necessary to buy a high accuracy illuminance meter with a reasonable **, and it is generally advisable to have an error of no more than 15%.

Color compensation

There are many types of light sources, some of which focus on red high-voltage lamps with longer wavelengths, or blue-purple fluorescent lamps with shorter wavelengths, such as daylight; There are also more evenly distributed such as incandescent bulb series, the same illuminance meter may have slightly different sensitivity for different wavelengths, so appropriate compensation is necessary.

Cosine compensation

As we all know, the brightness of the illuminated surface is related to the angle of incidence of the light source. In the same way, when measuring with a lux meter, the angle of incidence between the sensor and the light source will naturally have an impact on the reading value of the meter meter. Therefore, whether a good lux meter has the function of cosine compensation cannot be ignored.

In order to make the environment we live in more conducive to our health, the use of lux meter has become our first choice. But how to choose a lux meter that suits you? Lux meter (or lux meter) is an instrument that specializes in measuring luminosity and brightness.

Generally, we should consider the following points when purchasing:

The unit of illuminance is one lux (lux), and the appropriate light intensity of these places is expressed by numerical values to ensure that it can adapt to various environments in daily life, and all environments such as offices and factories have their own suitable illumination. If the illumination is insufficient or the illumination is too high, it will lead to misidentification, low work efficiency, and fatigue that may lead to reduced vision, so when the illumination is moderate, it can improve work efficiency and ensure work safety, so it is important to pay attention to lighting management.

Pay attention to the ambient temperature when using an ultraviolet illuminance meter:

When using, care must be taken to avoid receiving strong light, because the photocell cathode is exposed to strong light for a long time, and fatigue will occur, which will make the photocathode emission abnormal. Therefore, the protective cover of the window should be covered when the illuminance meter is not in use, and the ambient temperature of the ultraviolet illuminance meter should not be very high or very low. In particular, the ultraviolet illuminance meter that uses the thermoelectric element as the receiver has more stringent requirements for the ambient temperature (generally 20); When using the photocell GD-5 as the receiver, the ambient temperature requirements are not very strict, and the lower the temperature, the better; to reduce dark currents.

In addition, when measuring the radiation of the light source, it is perpendicular to the window of the receiver, which will cause a large error if it is tilted. In this case, an angle correction is required.

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1.General public place applications.

In order to ensure that people can live under suitable light, China has formulated health standards for indoor (including public places) illumination, and uses illuminance meters to measure the illuminance of various places.

2.Lighting industry, photography industry, stage lighting arrangement, etc.

The illuminance meter has been successfully applied to a number of schemes, such as lighting production, photography, stage lighting arrangement, etc., and different models of illuminance meters can meet different measurement requirements.

3.Factory production line application.

In the factory, the illumination requirements on the production line are more stringent, continuous work will cause visual fatigue, work efficiency is greatly reduced, usually the illuminance requirements are 1000lx, for the place with higher illumination requirements, you can choose a large range of lux meter, super large range range, can cope with strong light illuminance measurement.

4.Lux meters are used in a wide range of applications, including those in our daily lives, such as factories, warehouses, schools, offices, homes, street lamp construction, laboratories, and so on.

What do you measure, there's one that measures light, and one that measures ultraviolet light. You have to distinguish between this, the ** of the product is related to the accuracy of your measurement. Generally, ** is very cheap, unless it is the one that is imported, which is relatively expensive.

How does the lux meter work? How to use it in the wild? How should I choose a typical measurement location? When measuring, the illuminance meter measures the light intensity, which can measure the intensity of sunlight as well as lights, moonlight, and so on. Lux meter.

When choosing a lux meter, the first thing you should pay attention to is the range, which should be selected according to the brightness of the environment you want to measure, so as not to choose a small range, which will not be enough. In addition, it is best to choose a convenient and compact one, which is easy to carry, easy to operate, and convenient when measuring.

The ideal lux meter should conform to the visual efficiency curve of the CIE spectrum, but a cheap lux meter may not be able to do this.

I haven't used the lux meter much, but I measured the transmission with UV, from 200 to 3200nm. The graph of the relationship between wavelength and transmission t can be obtained directly. Seeing that you use a lux meter, I would like to ask you a question:

What is the wavelength range that your photometer can measure? I'm from Sun Yat-sen University. Lately, I've been looking for a photometer?

Can you help me?

No, the intensity of the light source is difficult to measure accurately, you can use a spectrophotometer.

The illuminance meter, also known as the luminance meter or photometer, belongs to the same product, has the same function, and is used to test lighting. To learn more about the illuminance meter, the best thing is to search for content such as the illuminance meter Li Zhishu article, I believe it can help your group disturbance.

Isn't the lux meter used to measure the intensity and brightness of light?