UV Measurement Device Selection and Usage

1. UV measurement device introduction

UV measurement device, also called UV light meter, is an instrument specially used to measure the intensity of ultraviolet light. Illumination intensity refers to the intensity of the object being illuminated, that is, the ratio of the luminous flux obtained on the object surface to the illuminated area. It is usually used to measure the light source intensity in ultraviolet aging equipment, flaw detection, medical, food, electronics and other industries of polymer materials.

2. UV measurement device working principle

The measurement principle of the UV light meter is very simple. In short, it converts light energy into electrical energy. The incident light reaches a certain interface through the metal thin film and produces a photoelectric effect at the interface. The potential difference is proportional to the illuminance on the surface. When connected to an external circuit, current will flow. And the current value will be expressed in microamps。

Ultraviolet can be described as a general term for very short wavelength electromagnetic radiation between 100 and 400 nm that is invisible to the human eye. According to the wavelength, it is subdivided into three types: UV-A (320-400 nm long wave), UV-B (280-320 nm medium wave) and UV-C (100-280 nm short wave). Ultraviolet rays of different wavelengths may cause some damage to human skin and ultraviolet rays play a huge role in industry.

1. UVA band can be used in industries such as photocuring, lithography exposure and integrated circuits.

2. UVB band can be used in hospitals, health care, physiotherapy, UVB fluorescent lamps and other industries. 

3. The UVC band is also called sterilization band. Ultraviolet rays in the UVC band can be used in sterilization, pharmaceutical factories, disease control centers, etc.

1. Why do we use UV measurement device?

Every company with ultraviolet equipment should be equipped with an UV measurement device to measure the intensity of ultraviolet light. Because the ultraviolet light source will decay during long-term use. At the same time, ultraviolet light sources are widely used in industry and medicine. For example, UV curing, treatment of skin diseases, germicidal lamps. Since the power value of the ultraviolet light source is fixed during use, it will form a fixed time during use. Once the light source decays and we do not find it in time, the ultraviolet light may not achieve the desired results during use. Therefore, we need to regularly use an UV measurement device to detect the ultraviolet light source, so as to ensure that the UV light source works normally and ensure that the amount of UV radiation is sufficient to polymerize or perform other treatments on the material.

2. What value can be measured by UV measurement device?

Ultraviolet light sources usually need to measure two values:

1. UV intensity (in units of mW / cm²)

2. Ultraviolet radiation energy (in mJ / cm²)

To purchase the UV measurement device for measuring the UV light source, you need to know the band of your own UV light source first, because the sensors (or detectors) equipped in different UV measurement devices are equipped with different filters, relying on different filters that can measure different UV bands (UVC, UVB, UVA, etc.).

Want to select the best uv meter? Please read "How to Select the Best UV Light Meter For Your Application？".

1. How to use Linshang LS125 UV measurement device

1. hort press the power button to turn on the UV light meter (the instrument will automatically recognize the probe).

2. In the Off state, long press the power button to enter the setting mode.

3. Use up and down buttons to choose whether to shut down automatically.

4. hort press the confirm button to confirm. Select energy value, power supply frequency, unit, etc.

5. After setting, the instrument will enter the measurement interface