Measuring method of radiant intensity value of ultraviolet lamp tube After turning on the ultraviolet lamp for 5 minutes, operate according to the instructions, and place the probe of the ultraviolet intensity tester (ultraviolet irradiator) with a measuring wavelength of 253.7 nm at the center of the vertical 1m under the ultraviolet lamp to be inspected. After the instrument is stable, the data shown is the ultraviolet lamp The radiation intensity value of the tube. The new tube radiation intensity value of the 30W straight tube ultraviolet lamp is ≥100μW/cm2, and the radiant intensity value in use is ≥70μW/cm2; the radiation intensity value of the new 30W high-intensity ultraviolet lamp is ≥200μW/cm2. UV dosimeter is used to test the...

I am afraid that the most important issue in recent days is how to prevent new coronaviruses. This article mainly brings you the time that the virus can survive the host and the ultraviolet disinfection method. As an ordinary person, our knowledge of this virus is very limited, we can only listen to the recommendations of medical experts. Experts tell us that this virus causes a new type of pneumonia, and one way to prevent it is to wear a mask. Wearing a mask means that the new coronavirus can be spread through the air, and wearing a mask can effectively isolate the virus in the air. So, how long can the new coronavirus survive in the air? How to kill the virus in the air is related to the prevention effect. UV dosimeter is used...

The used car trading market is very large in my country, and the average number of vehicles traded daily is about 62,000. However, how to distinguish the quality of second-hand cars and how to identify whether the car is an accident has become a required course for many people who intend to purchase second-hand cars. Here is an example of used car trading, look at the value of coating thickness gauges in used car transactions. Xiao Dong is a newly-married young man. Due to family and work needs, a car must be added to the home. Unfortunately, it costs more to buy a house and a wedding. Xiao Dong can spend less on buying a vehicle, which makes it target the purchase of second-hand cars. After being introduced by a friend, Xiao Dong came...

As the performance of UVC LEDs (Deep Ultraviolet LEDs) improves, the use of this relatively new technology in disinfection, life sciences, and environmental monitoring instruments is rapidly developing. UVC LEDs can reduce space and power consumption, thereby increasing the cost of ownership for end users.The application of UVC LEDs in spectroscopy is increasing because they can solve the market trends in miniaturization, cost reduction and real-time measurement. UVC LEDs have a high utilization rate in some water sterilization, air sterilization, surface sterilization and biomedicine. UVC LED The waveband range is generally around 260nm, 275nm and 280nm.The main applications are as follows:UVC LED can be used as a sterilization light...

Short-wave UVC, the wavelength is between bai200 ~ 275nm, also known as short-wave sterilization ultraviolet. Du's ability to penetrate zhi is weak, and dao cannot penetrate most transparent glass and plastic. The short-wave ultraviolet rays contained in sunlight are almost completely absorbed by the ozone layer and absorbed by the ozone layer before reaching the ground.Reaction to human body: UVC in nature is absorbed by the ozone layer before it reaches the ground, and the effect on the skin can be ignored. However, short-wave ultraviolet rays are very harmful to the human body and cannot be directly irradiated. If it is directly irradiated, the skin can be burned in a short time, and long-term or high-intensity irradiation may cause...

The steel structure fireproof coating has many superior performances that other anticorrosive coatings cannot match. The interference factors of the actual effect of the steel structure fireproof coating come from many aspects, the most important thing is the thickness of each part of the coating. We often use a coating thickness gauge to measure each layer, and strictly meet the required standards to improve the effectiveness of the steel structure fire protection coating as a whole. 1. Thickness of primerThe main function of the fire protection coating of the steel structure is fire protection, so the rust prevention work of the internal material also needs to be undertaken by the primer. When choosing an anti-corrosive primer, one...

The UV lamp only has the effect of sterilization and disinfection when it reaches a certain intensity, so we must check and ensure that the intensity of the UV lamp can achieve the sterilization effect before using the UV lamp. The intensity of ultraviolet light is the main factor of ultraviolet sterilization effect. In the process of using the ultraviolet lamp, its irradiation intensity will gradually decrease. In order to ensure the disinfection effect of the ultraviolet lamp and prevent the occurrence of nosocomial infection more effectively, it is very necessary to regularly check the intensity of the ultraviolet lamp. The wavelength of the ultraviolet sterilization lamp is generally 253.7nm, and it is necessary to use a UVC...

The structure of the magnetic thickness gauge is integrated, which can be operated with one hand during measurement. Because it is made using the principle of electromagnetic induction, it is suitable for measuring the thickness of non-magnetic coatings on various magnetic metal substrates. It can also measure the thickness of various coatings on steel (except nickel plating), coatings, enamel, plastics, etc. It can also be used to measure the thickness of various metal foils (such as copper foil, aluminum foil, gold foil, etc.) and non-metallic films (such as paper, etc.). Magnetic thickness gauges can be used in industries such as production, acceptance inspection, and quality supervision to test whether products comply with national...

Whether it is ordinary glass or ultra-white glass, the transmittance can be measured with a transmittance instrument. Like some manufacturers, the accuracy of the instrument is not enough. For ultra-white glass with a transmittance higher than 90%, the test is completely inaccurate. Linshang Company There is a high-precision light transmittance meter LS116 , which adopts a parallel light path design and conforms to the CIE visual function standard. The test data is accurate and the operation is simple and convenient. The first choice for light transmittance. It can also be used to detect the light transmittance of flat transparent materials, organic materials, coating materials, glass (hollow/interlayer), smoke density boxes, etc...

(English: Gloss Meter), also known as gloss machine, light meter, light meter, gloss meter, gloss meter, gloss tester, gloss tester, glossmeter and smoothness tester are measuring objects Special instrument for surface gloss. Widely used in chemical raw materials, paint manufacturing, aerospace industry, automotive industry, shipbuilding industry, electronics industry, electrical appliance industry, IT communications and other supporting special measuring instruments. (Glossiness instrument unit No. 2 "GU"). The 213 gloss meter is a 213 switch to the mirror 213 mode in the portable gloss meter to make the instrument widely used. The light source emits a beam of light that reaches the measured surface P through the lens L1. The measured...