What is the environment that will affect the UV Aging Test Chamber

Temperature in the UV Aging Test Chamber: the temperature in the chamber shall be controlled according to the specified test procedure when the equipment is in the irradiation stage or in the lighting stop stage, and the relevant specifications shall specify the temperature to be reached at the irradiation stage of 40 ℃ or 55 ℃ according to the intended use of the equipment or components;

Air flow velocity in the UV Aging Test Chamber: the air flow velocity near the sample surface will not only affect the temperature rise of the test sample, but also cause significant errors in the open thermoelectric stack monitoring the radiation intensity. Generally, the speed of 1 m/s will reduce the temperature rise of the thermoelectric stack by more than 20%. It can be seen that while effectively controlling the temperature or conditions in the cabinet; The air flow speed shall be monitored and the lowest speed shall be adopted as far as possible;

Humidity in the UV Aging Test Chamber: under different humidity conditions, the photochemical degradation effects of various materials, coatings, plastics and other substances vary greatly. Because they have different requirements for humidity conditions, the specific temperature conditions are clearly specified by the relevant specifications;

Chamber surface pollution: dust and other pollution will seriously change the absorption characteristics of the surface of the illuminated object. In the absence of other regulations, the cleanliness of the sample shall be ensured during the operation of the test box;

Internal ozone and other polluting gases: the ozone generated by the chamber under the short-wave ultraviolet radiation of the light source can usually be excluded from the test chamber by correcting the spectral energy distribution non-radiation filter. Because ozone and other polluting gases can affect the deterioration process of some materials, these harmful gases must be discharged from the chamber unless otherwise specified;

Installation of UV Aging Test Chamber experimental support: the characteristics and installation methods of various supports will have a serious impact on the temperature rise of the tested object, so special attention should be paid to the support; During the test, if most of the samples are installed on the support or cushion, they must be placed according to the regulations;

Replacement time and how to replace the lamp tube of the UV aging test chamber?
Judge the replacement time of the lamp tube in the UV aging test chamber: the luminous principle of the ultraviolet lamp tube is the same as that of the fluorescent lamp in our life. When it is used for a long time, the two ends of the lamp tube will appear black, the light will darken, and the light will flicker, which means that the radiation amount or sterilization function of the lamp tube is gradually decreasing, or even disappearing. When the light energy radiation of the ultraviolet lamp tube decreases beyond 75%, Users need to replace the lamp tubes in the box in the following ways to ensure the performance of the equipment;

Remove the 3 # lamp tube, move the 2 # lamp tube to the 3 # position, move the 1 # lamp tube to the 2 # position, and move the 4 # lamp tube to the 1 # position. Install a new lamp tube at the 4 # lamp tube position. In this way, the ultraviolet light source is always composed of the new lamp and the old lamp, thus obtaining a constant output of light energy;

UV aging test Chamber is designed for evaluating the resistant performance of non-metallic materials, organic materials (plastics, paints, coatings, rubbers, etc.) under the specified conditions such as sunlight, temperature, and other climatic conditions. It creates a man-made testing environment imitating the natural light source such as sunlight and other damages in the nature, such as rain and dew damage, to impose on the materials and to assess the degree of color changing and fading under the accelerated environment conditions. The chamber fully complies with the requirements of Standard ISO 4892-1, ISO 4892-3, GB/T16585-1996, GB14522-93, GB/T16422.3-1997, ASTMG53 and etc., provides the best UV sunlight simulation, and is easy to use and operate.

Lisun Instruments Limited was found by LISUN GROUP in 2003. LISUN quality system has been strictly certified by ISO9001:2015. As a CIE Membership, LISUN products are designed based on CIE, IEC and other international or national standards. All products passed CE certificate and authenticated by the third party lab.

Our main products are Goniophotometer, Integrating Sphere, Spectroradiometer, Surge Generator, ESD Simulator Guns, EMI Receiver, EMC Test Equipment, Electrical Safety Tester, Environmental Chamber, Temperature Chamber, Climate Chamber, Thermal Chamber, Salt Spray Test, Dust Test Chamber, Waterproof Test, RoHS Test (EDXRF), Glow Wire Test and Needle Flame Test.

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Tags：UV-263LS