UV Measurement Device Selection and Usage

From:Linshang Time:2020/05/12 12:00:00 Browse:182
This article takes Linshang LS125 UV measurement device as an example to introduce the principle, selection and use method of UV light meter.

I. What is UV measurement device?

1. UV measurement device introduction

UV measurement device, also called UV light meter, is an instrument specially used to detect 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. The UV measurement device is a special instrument used to measure the intensity of ultraviolet light. It is usually used to detect the light source intensity in ultraviolet aging equipment, flaw detection, medical, food, electronics and other industries of polymer materials.

2. UV measurement device 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。

II. Why do we use UV measurement device?

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 detecting 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.).

III. UV measurement device application and selection

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.

For example, ultraviolet rays in the UVA band can be used in industries such as photocuring, lithography exposure and integrated circuits. Ultraviolet rays in the UVB band can be used in hospitals, health care, physiotherapy, UVB fluorescent lamps and other industries. 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.Industrial application and selection of UVA band

340nm-420nm is suitable for curing and exposure industries
1mm test aperture for 340-420nm point light source radiation intensity and energy detection.
Price: $412
Model: LS125 + UVALED-X1
260nm-400nm light source can be used for aging box
Suitable for the detection of ultraviolet rays in aging boxes or sunlight
μW/cm² (default), mW/cm², W /m² can be switched without manual calculation.
Price: $368
Model: LS125 + UVA-X1
340nm-420nm light source can be used for LED curing
mW/cm² (default), W/cm², W/m² can be switched without manual calculation.
Used for ultraviolet energy detection of LED cold light source
Price: $412
Model: LS125+ UVALED-X0
315nm-400nm light source is suitable for high pressure mercury lamp
Suitable for the energy and intensity test of 365nm high-pressure mercury lamp
Price: $412
Model: LS125 + UVA-X0
340nm-420nm can be used in curing industry such as UVV light source or nail lamp
Suitable for ultraviolet energy detection of low-power UVA light source or UVV light source
Powerful intelligent statistical function
Price: $368
Model: LS125+ UVALED-X3

2. Industrial application and selection of UVB band

The ultraviolet rays in the UVB band can be used in hospitals, health care, physiotherapy, UVB fluorescent lamps and other industries. 280nm-315nm ultraviolet light can be used for ultraviolet health care lamps, medical physiotherapy lamps, plant growth lamps, fluorescent lamps, aging experiments, etc.

280nm-315nm ultraviolet light can be used for ultraviolet health care lamps, medical physiotherapy lamps, etc.
Used for energy measurement of UVB ultraviolet light sources with wavelengths of 297nm, 308nm, 313nm, etc.
Price: $412
Model: LS125+ UVB-X0

3. Industrial use and selection of UVC band

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

240nm-320nm can be used for LED germicidal lamp
Used for 260nm-285nm UVC LED light source
Large range of 200,000 μW/cm².
Price: $442
Model: LS125 + UVCLED-X0
230nm-280nm can be used for sterilization, mainly for drinking water, purified water, farm water treatment and other occasions.
With waterproof function of one meter.
Large range of 200,000 μW/cm².
Price: $442
Model: LS125+ UVCWP-X1
230nm-280nm, λp = 254nm,used for sterilization. It can be used in pharmaceutical factories, food factories, schools, movie theaters and other places.
Large range of 200,000 μW/cm².
Price: $412
Model: LS125 + UVC-X0

IV. How to use Linshang UV measurement device?

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

LS125 UV measurement device operation method

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