How to Measure Ultraviolet Radiation Intensity by a UV Lamp Intensity Meter?

Time:2019/09/16 11:27:00 Browse:4752

What is ultraviolet light? Ultraviolet light means that the wavelength of the electromagnetic spectrum is from 10 nm to 400 nm. The ultraviolet light is divided into three bands of UV-A, UV-B and UV-C. How to measure ultraviolet radiation intensity?A professional UV lamp intensity meter ( also called uv light intensity meter) should be used for testing.

UV light intensity meter
UV light intensity meter

1. What is ultraviolet light?

Ultraviolet light means that the wavelength of the electromagnetic spectrum is from 10 nm to 400 nm and cannot be perceived by the naked eye. According to the band, UV is divided into three categories: UV-A, UV-B and UV-C:

  1. UV-A is a long-wave UV-transparent, wavelength 315 nm - 400 nm, which can make the skin elastic and collagen fibers, can make the skin tan.

  2. UV-B is a medium-wave ultraviolet ray with erythema effect to promote mineral metabolism and vitamin D formation in the body, the wavelength is 280 nm - 320 nm, but long-term exposure is not recommended, because it will tan the skin caused by erythema peeling.

  3. UV-C is a short-wave ultraviolet ray that has a bactericidal effect. The wavelength is 200 nm – 280 nm. The UV-C wavelength is very harmful to the human body. Short-term exposure can burn the skin. If it is exposed for a long time, it will cause skin cancer.

Ultraviolet rays are often used in our lives. UV-C is often used in hospital germicidal lamps. UV-B is often used in health care physiotherapy lamps. UV-A is often used in curing lamps in the curing industry. Generally, the intensity and energy of ultraviolet light are detected. It is recommended to use an ultraviolet radiation meter (UV meter) such as the UV lamp intensity meter LS126C for professional detection of UVC wavelength or the multi-probe UV lamp intensity meter LS125 for detecting the UV light intensity of UV-B,UV-A and UV-C. LS127C integrated UV irradiation meter is also a professional instrument for measuring the UV intensity of UVC 254nm.

LS127C UV light meter connected to app
LS127C UV light meter connected to app

2.Instrument measurement principle

Linshang's UV energy meter and UV irradiation meter both adopt the intelligent microcontroller acquisition and measurement principle, firstly, through the ADC analog-to-digital conversion chip, the weak current signal from the UV detector is converted into a digital signal. After the digital signal is collected by the microcontroller, the power value is obtained through software tuning, and then UV energy is obtained through the integration of UV power and time. Simply put, the photoelectric detector converts the sensed light intensity into the current size, which is displayed through calculation. The use of intelligent single-chip acquisition of this measurement principle, the instrument can simultaneously display real-time power value, maximum power value and energy value, to achieve high-speed multi-point acquisition, the collection of multiple sets of data can be generated curve. For UV energy meter, in fact, can also use a single chip integrated measurement program, the advantage of this program is the design is simple, directly with the sensor plus adjustable resistor, the composition of the analog signal input, the disadvantage is that the accuracy is not enough, can only display the energy value, can not display the power value.

3. How to measure UVGI?

First, an UVC lamp intensity measurement device is necessary. The LS126C and LS127C are both professional UVC germicidal lamp UVC intensity measurement instruments, the LS126C is more powerful. Next let's look at the method for detecting UVC germicidal/ disinfecting light source with LS126C UV lamp intensity meter:

  1. LS126C UV measurement device as a professional UV lamp intensity meter will be provided with a 1 meter extension hook, the customer only needs to stretch the hook to 1 meter and then directly hang the meter on the 254nm UV lamp tube, then put the UV lamp intensity meter on the tray then turn on the UV disinfection lamp to start test.

  2. If the customer downloads the uv meter app for LS126C, the Bluetooth function can also be used. The uv lamp intensity meter can be connected to the uv meter APP. The transmission distance of the Bluetooth is 50 meters in an open place. With this Bluetooth function, the test staff won't get hurt by the UV rays. You can stay out of the testing room and view the data on the mobile phone.

  3. After the automatic shutdown of the instrument, we reboot to see the latest measurement data, the instrument shows the Prec value is the intensity at the moment of shutdown, and we generally judge whether the lamp is up to standard based on this value. In addition, there is a record of the maximum value of the lamp, the minimum value, the average value and other parameters.

UV lamp intensity meter
UV lamp intensity meter

4. How to measure UVA/UVB light intensity?

UVB or UVA light sources irradiation intensity can be measured by the LS125 multi-probe UV lamp intensity meter. LS125 is an multi-probe UV measurement device that can be equipped with 9 probes: UVC-X0, UVCLED-X0, UVCWP-X1, UVB-X0, UVA-X1, UVALED-X3. No matter you want to measure the UVA,UVB or UVC light sources. You can select a suitable probe. For example, LS125+UVALED-X0 probe can be used to measure the radiation intensity of LED nail lamp, for detailed information, you can read "Is LED Nail Lmap Safe?".

  1. When using LS125 UV lamp intensity meter, first determine the light source, if it is to measure UVB light source, install UVB probe, if it is UVA light source, install UVA probe...

  2. Then start the test by aligning the light source with the measuring aperture of the UV measurement device.

  3. As shown on the right of the image above, we can read the UVB radiation intensity (Power) value of the UVB light source under test.

5. UV Light Intensity Meter (Hot)

1. 254nm UVC germicidal lamp radiation intensity test
2. LS125+UVC-X0 UVC meter measure 254nm germicidal lamp
3. LS125+UVCLED-X0 UVC meter measure UVC LED
4. LS125+UVA-X0 UVA meter measure UVA high pressure mercury lamp
5. LS125+UVB-X0 UVB meter measure UVB lamp
1. The LS125 UV meter host support 9 probes
2. LS125+UVC-X0 UVC meter measure 254nm germicidal lamp
3. LS125+UVCLED-X0 UVC meter measure UVC LED light source
4. LS125+UVA-X0 UVA meter measure UVA high pressure mercury lamp
5. LS125+UVB-X0 UVB meter measure UVB light source
1.Professionally used for 254nm germicidal lamp ultraviolet radiation intensity detection
2.Special for low pressure mercury lamp
3.Equipped with a mobile APP to realize real-time monitoring and stay away from ultraviolet radiation damage

The above is an introduction to how to check UV lamp intensity? If you have any questions about our UV lamp intensity meter, please feel free to contact us by email. For more information about the UV light intensity meter, Please read "How to Select the Best UV Light intensity meter."

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