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01 Aug, 2022 17 Views Author: Saeed, Hamza

How do the Environmental Chambers work

How Does Test Chambers Work?
Different systems are used in test chambers to create and maintain the ambient conditions depending on their intended use. Since they are frequently encountered, we’ll quickly discuss cooling, heating, humidity, and salt spray done by LISUN environmental chambers.


Cooling & Refrigeration
Test chambers have the capacity to regulate very low temperatures (like -70 degrees Celsius). Temperatures can drop much lower and faster when added boost cooling, such as liquid carbon dioxide or liquid nitrogen, which may be required for quick cooling during stress tests.

Air is heated by electric heating systems in modern test chambers to produce precise, controllable results. This is done with the use of independent, quick-response nichrome heaters with ceramic cores. Standard models have a precision of +/-0.5 degrees and may achieve temperatures of 120 degrees Celsius and well above.

It’s crucial to keep in mind the test chambers’ intended performance level when heating and cooling. Standard versions can achieve high and low temperatures. However, they might not be able to sustain these extremes or change rates without endangering the smaller compressors. Always take your product’s rate of heat absorption into account while testing it. This will have an impact on performance expectations.

Vapor steam generators are fitted to each test chamber specifically and attached to provide humidity. For humidity levels between 20 and 95 percent relative humidity, they depend on a water source that has been properly conditioned (RH). A mechanical dehumidifying system is frequently utilized to remove unwelcome humidity and expedite the pulldown procedure. When temperatures rise or fall, some test chambers are designed to maintain strict humidity control. Desiccant air dryers are added to test chambers by users who need to achieve relative humidity values as low as 5% RH.

Salt Spray
A salt solution is made and kept in a tank to form the salt spray. It is then forced through a nozzle with the help of compressed air to produce a fine mist in the test chamber. Its transparent walls provide complete product visibility while being tested.

Environmental Chamber Uses
Businesses test the impact of surroundings at various stages of product development. It is a crucial component of proof of concept and prototyping for younger businesses. Testing validates their most recent ideas for seasoned individuals and speeds up their time to market.

Different phases demand different test profiles although it is crucial to highlight that you should spend more time detecting potential weak areas during research and development. They are far more expensive to fix, both financially and in terms of lost production time.

For the technological and engineering tasks necessary to advance the design and development of products, research is crucial. R&D is used by businesses in practically every sector to conceptualize, create, and deliver cutting-edge goods.
Environmental test chambers are used for a variety of R&D activities. Some of them are made for laboratory research, testing to find or evaluate product alternatives, building and testing pre-production prototypes, and so on.

Product shelf-life testing are the most frequently performed tests. Through a process known as highly accelerated life testing, businesses replicate the lifespan of a product (for instance, a shift of five degrees in the test chamber is comparable to two years in a real-world setting) (HALT). Finding the so-called “failure point” of items is the objective, which enables businesses to establish expectations or, if necessary, concentrate on an alternative design that proves to be more durable.

Temperature chmaber

Thermal Chamber

You will feel more confidence moving to production the more time, money, and effort you invest in R&D testing.

Depending on the products and the sector, companies adopt various production testing strategies. For instance, defibrillator manufacturers use highly expedited stress testing on each device that leaves the production line (HASS). (HASS testing’s purpose is to demonstrate that the product reaches the failure point indicated during HALT testing without malfunctioning.) Each has the potential to save lives, thus it is essential that they all perform flawlessly and according to plan.

Individual product testing is indeed necessary in several businesses. Companies often test products off the production line as well. Others, however, test many product batches simultaneously in an effort to conserve time and money. Whatever the approach, the idea is the same. Before releasing your products to the general public, you must ensure their dependability and quality. The testing also validates the time and resources invested in R&D.

Quality Testing
Does the product function as it should? In quality testing, that is what you are trying to ascertain. A product’s quality is guaranteed by quality control and assurance. There are unique environmental quality criteria for a wide variety of goods, parts, and components in several industries. These criteria could be dictated by governmental or business organizations, or they could be a crucial component of the company’s design or manufacturing requirements.

Reliability Testing
This is the point where the surroundings really matter. Manufacturers of electronics, in particular, test their goods to verify that they function in a variety of conditions, from extreme temperatures to high and low humidity levels. The outcomes guide their expectations and recommendations for customers. The chance of unanticipated, expensive product failures after the product has been released is also decreased by reliability testing. You can securely enter the market if you can pinpoint HALT testing weak points and guarantee that goods leaving the factory reliably exceed those limits.

Is environmental testing harmful?
Environmental testing
typically causes no harm. To guarantee that temperature ranges are maintained to prevent damage, safety restrictions can be applied to the test apparatus. In order to verify operation, the test unit is normally operated within or at its prescribed operating conditions and not taken outside of them.

What kinds of tests can be carried out in a test chamber with an environment?
There are a variety of tests that can be carried out, such as general operation in the anticipated temperature range, cold and warm temperature startup, tolerance to expected humidity levels, drift of crystal oscillators, timing margin confirmation, maximum component temperatures, and endurance to cycling wet or dry heat.

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 GoniophotometerIntegrating SphereSpectroradiometerSurge GeneratorESD Simulator GunsEMI ReceiverEMC Test EquipmentElectrical Safety TesterEnvironmental ChamberTemperature ChamberClimate ChamberThermal ChamberSalt Spray TestDust Test ChamberWaterproof TestRoHS Test (EDXRF)Glow Wire Test and Needle Flame Test.

Please feel free to contact us if you need any support.
Tech Dep: [email protected], Cell/WhatsApp:+8615317907381
Sales Dep: [email protected].com, Cell/WhatsApp:+8618117273997


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