Programmable high and Low temperature &humidity test chamber

High and low temperature & humidity test chamber is a common test equipment that simulates the heat dissipation performance, stability performance, power consumption parameters, and estimated product service life in high and low temperature environments.

LISUN Temperature Humidity Chamber | Thermal Chamber | Climate Chamber is according to IEC60068-2-1 (GB/T2423.1) and IEC60068-2-2 (GB/T2423.2), IEC60068-2-78, IEC60598-1, GB/T2423.17, GB/T5170.2, GB/T5170.5. The climate chamber is used to test the CFL/LED which meets IES LM-80-08, electricity products, automative cars, home appications and mobiles.

Thermal Chamber

The choice of reliability high and low temperature & humidity test chamber shall follow the following five basic principles:
1. Reappearance of environmental conditions:
It is expected that the environmental conditions of nature existing in the laboratory are full and accurately reproduce the existence of nature. However, within a certain range of tolerance, people can completely and approximate the external environmental conditions that have been simulated in the process of using, storage, and transportation in the process of use, storage, and transportation. The environmental conditions (including the platform environment) around the trial product should meet the environmental conditions and the requirements of the tolerance specified in the product test specifications. ” If the temperature chamber used for military product test not only meets the national military standard GJB150.3-86, GJB150.4-86 according to the high temperature, low temperature test value and test time specified in different types The requirements of the uniformity and temperature control accuracy of the temperature field in the specification. Only in this way can we ensure the reproduction of the environmental conditions in the environmental test.

2. Repeatability of environmental conditions
An environmental test equipment may be used for multiple tests of the same type of product, and a test product may also be tested in different environmental test equipment. The comparison of the test results obtained under the conditions must inevitably require the environmental conditions provided by the environmental test equipment to be heavy. That is to say, the stress level (such as thermal stress, vibration stress, electrical stress, etc.) used for environmental testing equipment for test products is consistent.

The repeatability of the environmental conditions provided by the environmental test equipment is guaranteed by the national measurement and verification department in accordance with the verification regulations formulated by the national technical supervision agency. To this end, the environmental test equipment must be required to meet the requirements of various technical indicators and accuracy indicators in the verification regulations, and the time limit of the time limit specified in the verification cycle is not exceeded in the use time. If the use of very common electric vibration tables in addition to meeting technical indicators such as excitement, frequency range, and load capacity, it is also necessary to meet the horizontal vibration ratio, the uniformity of the countertop acceleration, the harmonic distortion of the countertop, and the harmonic distortion specified in the verification regulations. And the use cycle after each verification is two years, and it must be represented after more than two years.

3. Incurrence control of environmental condition parameters
The environmental conditions provided by any environmental test equipment must be observed and controllable. This is not only to limit the environmental parameters within a certain tolerance range, ensure the reappearance and repetitive requirements of the test conditions, but also Starting from the safety of product tests is also necessary to prevent the damage of the subject due to the out of control of the environment and cause unnecessary losses.

4. Rowing of environmental test conditions
Each environment or reliability test has strict regulations on the category, quantity value, and tolerance of environmental factors, and exclude the environmental factors required for non -test infiltration in order to determine and analyze the product in the test or after the test. When the failure and fault mode, the exact basis is provided. Therefore, the environmental test equipment is required to attach other environmental stress interference to the subject’s test products in addition to providing the specified environmental conditions. For example, the interviews limited by the inspection regulations of the electric vibration platform, the acceleration signal -to -noise ratio, the acceleration of the inside and outside acceleration, the total measuring square root value ratio. The precision indicators such as the inspection of random signals and the harmonic distortion are all the verification items formulated to ensure the uniqueness of the environmental test conditions.

5. The safety and reliability of the test equipment
Environmental tests, especially reliability tests, long test cycles, and the objects of the experiment are sometimes high -value military products. During the test process, the test staff often operate or test around the site. Therefore, the environmental test equipment must be running. Safety, convenient operation, reliable use, long working life and other characteristics to ensure the normal progress of the test itself. Various protection, alarm measures and security linking devices of test equipment should be perfect and reliable to ensure the safety and reliability of the test personnel, the test products and the test equipment itself. First of all, select a suitable test equipment, and choose the inside of the test box according to the size of the test sample. When the trial product (component, components, components, components, or whole machines) is placed in the climate box for testing, in order to ensure that the product can meet the environmental conditions prescribed by the test specifications, the working space size and the outline size of the trial product Three points should be followed:
1. The volume of the test product must not exceed the effective working space of the test chamber (20-35). The recommended selection of products that are recommended in the test is not more than 30mm;
2. The welcoming area of the test product and the total area of the working cavity of the test box on the section is not greater than (35-50);
3. The distance between the outer surface distance of the test product should be kept at least 100-150mm.

Some precautions used in high and low temperature test chamber:
1. The dry ball ultra -temperature protection switch in the test chamber should check whether the temperature of the test machine is+10 ~ 20 ° C. If it is not handled in accordance with regulations, it is necessary to adjust appropriately;
2. After the test machine is released, check whether the power cord is installed and whether it has been done.
3. The test machine needs to add water before use to check whether the water volume is sufficient and whether the water lid is covered. Water: Pure water (the conductivity is from 0.1 to 20 μs/cm).
4. Please check whether the ultra -temperature protection switch is set at 150 ° C. When the test only does the temperature test, the gauze should be removed. If the gauze runs at high temperature above 85 ° C, the gauze should be replaced before the next operation, otherwise it may be possible. Can’t absorb water anymore. When changing gauze, please wash your hands first.
5. Whether the wet ball gauze of the test machine is installed correctly and whether the humidity sensor is moist.
6. External wiring is also important. Whether the power cord is intact and whether the wiring is firm. On these issues, before starting the device, you need to carefully check the confirmation of the power supply voltage;
7. Check the degree of internal cleanliness, just like the severity of the appeal, check whether the box is clean, especially after the interior of the water tank needs to be rinsed with clean water, you need to add an appropriate amount of water to test the water source.
8. Before starting the use of high and low temperature test cases or stop reusing for a long time, the above matters need to be operated, otherwise it may cause a fault that safety accidents or equipment cannot be recovered during use. Through this test device, tried to conduct reliability tests, product screening tests, etc., improved the reliability of the product and performed quality control.
9. High and low temperature test box meets the requirements of national standards such as GB 2423.1-2001, GB 2423.2-2001, as well as other relevant standards. The technical conditions of the GB 10592-89 high and low temperature test box are designed and manufactured, and can be made in accordance with the requirements of the military standard test GJB150.3-86, GJB150.4-86, and non-standard to make various high and low temperature environment trials.

Eight safety of high and low temperature test chamber:
1. The chamber shell must be ground when the test box is installed. If the test box is not grounded, there will be a risk of electric shock once leakage.
2. Do not run the device before the device is not installed, make sure that the test is installed and then test
3. If the box is placed in the chamber, the sample control power is controlled, please use the outside power supply. Do not use the power supply directly
4. The box operation will generate a dangerous current. Non -professional please do not open the electric control cabinet cover
5. If the high and low temperature test chamber is not equipped with humidification function, pay attention to the difference in use and requirements when reading instructions
6. During the operation of the machine, under the controller control of various motors and fans, start according to the instruction. Do not touch components that are temporarily in a static state with your hands to prevent the component from suddenly starting and causing personal injury. It really needs to be close to the rotary component. When working, please cut off the main power switch and ensure that the protective device is intact
7. Move the test chamber when there is a sample, otherwise the sample may reverse or fall
8. Before use, ensure that the high and low temperature test chamber is fixed, that is, the foot wheels are adjusted to the ground, otherwise the test box will move unexpectedly when the external force is subject to the external force.

What is Climate Chamber?

Climate chambers is used to simulate a temperature enviromental condistions, it may also be called environmental chambers or Thermal Chamber or Temperature Chamber. You can click the below videos to learn the details and also how to operate it.