An environmental chamber, also called a climatic chamber or climate chamber, is an enclosure used to test the effects of specified environmental conditions on biological items, industrial products, materials, and electronic devices and components.
Example of a temperature/humidity chamberExample of a Walk-In Environmental Chamber used for automobile reliability testing in various simulated environment
Such a chamber can be used:
as a stand-alone test for environmental effects on test specimens
An environmental test chamber artificially replicates conditions which machinery, materials, devices or components might be exposed to. It is also used to accelerate the effects of exposure to the environment, sometimes at conditions not actually expected.
Chamber testing involves testing and exposing products to various environmental conditions in a controlled setting. Climatic Chamber testing and Thermal Shock testing are part of chamber testing. Climatic Chamber testing is a broad category of ways to simulate climate or excessive ambient conditions exposure for a product or a material under laboratory-controlled yet accelerated conditions. On the other hand, Thermal Shock testing is used to simulate how materials will react when exposed to changes in extreme climatic conditions, such as going from extremely cold to extremely hot conditions in a very short period of time (usually only few seconds).
Manufactured samples, specimens, or components are placed inside the chamber and subjected to one or more of these environmental parameters to determine reliability or measure after-effects such as corrosion. In the case of machinery such as internal combustion engines, byproducts such as emissions are monitored.
An environmental chamber can be a small room used both to condition test specimens and to conduct the test. It can be a smaller unit that's used for conditioning test items. Also, some chambers are small enough to be placed onto a universal testing machine or other test apparatus.
Many chambers are set at a certain set of conditions. Others can be programmed to cycle through specified sequences of conditions.
Designedit
As test requirements may be relatively simple or complex, environmental test chambers vary widely in size, ranging from small units designed for placement on bench tops to large walk-in chambers. Test chambers generally have viewports or video feeds to allow for visual inspection of the sample during the test. Reach-in chambers provide an opening that technicians may use to handle test samples. Chambers providing interior visual lighting must take into account the heat generated and compensate accordingly.
As with the wide variance in size, a number of user control options are available, ranging from simple analog indicators up to more modern digital readouts with LCD displays. Chambers may be computer programmable, and networked or Web-enabled test chambers with built in web servers are also available.[2]
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This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Environmental chamber news newspapers books scholar JSTOR July 2017 Learn how and when to remove this message An environmental chamber also called a climatic chamber or climate chamber is an enclosure used to test the effects of specified environmental conditions on biological items industrial products materials and electronic devices and components Example of a temperature humidity chamber Example of a Walk In Environmental Chamber used for automobile reliability testing in various simulated environment Such a chamber can be used as a stand alone test for environmental effects on test specimens as preparation of test specimens for further physical tests or chemical tests as environmental conditions for conducting testing of specimens Contents 1 Overview 2 Design 3 Types of test chambers 4 Test chamber standards 5 See also 6 ReferencesOverview edit nbsp Chamber for salt spray nbsp Large NASA vacuum chamber An environmental test chamber artificially replicates conditions which machinery materials devices or components might be exposed to It is also used to accelerate the effects of exposure to the environment sometimes at conditions not actually expected Chamber testing involves testing and exposing products to various environmental conditions in a controlled setting Climatic Chamber testing and Thermal Shock testing are part of chamber testing Climatic Chamber testing is a broad category of ways to simulate climate or excessive ambient conditions exposure for a product or a material under laboratory controlled yet accelerated conditions On the other hand Thermal Shock testing is used to simulate how materials will react when exposed to changes in extreme climatic conditions such as going from extremely cold to extremely hot conditions in a very short period of time usually only few seconds These conditions may include 1 extreme temperatures sudden and extreme temperature variations thermal shock altitude moisture or relative humidity electrodynamic vibrations electromagnetic radiation Cyclic corrosion testing salt spray rain weathering exposure to sun causing UV degradation vacuum Manufactured samples specimens or components are placed inside the chamber and subjected to one or more of these environmental parameters to determine reliability or measure after effects such as corrosion In the case of machinery such as internal combustion engines byproducts such as emissions are monitored An environmental chamber can be a small room used both to condition test specimens and to conduct the test It can be a smaller unit that s used for conditioning test items Also some chambers are small enough to be placed onto a universal testing machine or other test apparatus Many chambers are set at a certain set of conditions Others can be programmed to cycle through specified sequences of conditions Design editAs test requirements may be relatively simple or complex environmental test chambers vary widely in size ranging from small units designed for placement on bench tops to large walk in chambers Test chambers generally have viewports or video feeds to allow for visual inspection of the sample during the test Reach in chambers provide an opening that technicians may use to handle test samples Chambers providing interior visual lighting must take into account the heat generated and compensate accordingly As with the wide variance in size a number of user control options are available ranging from simple analog indicators up to more modern digital readouts with LCD displays Chambers may be computer programmable and networked or Web enabled test chambers with built in web servers are also available 2 Types of test chambers editMechanically cooled test chambers Liquid nitrogen cooled test chambers Modular Walk in Chambers 3 Test chamber standards editSeveral standards organizations provide standards and guidance on environmental test chamber construction temperature control standards and engineering tolerances Institute of Environmental Sciences and Technology 4 Air Conditioning Heating and Refrigeration Institute formerly the American Refrigerant Institute American Society of Heating Refrigerating and Air Conditioning Engineers Air conditioning Heating ASTM International Underwriters Laboratories NSF International FM Global Canadian Standards Association International Organization for Standardization MIL STD 810 Test Method Standard for Environmental Engineering Considerations and Laboratory Tests presently 2010 version G issued in 2009 IEC 60068 Environmental Testing with many parts See also editCyclic corrosion testing Salt spray test Environmental stress cracking Doriot Climatic Chambers Accelerated aging Environmental stress screening 3 Environmental stress fracture MIL STD 810 DoD Standard for Environmental Engineering Considerations and Laboratory Tests Shelf life Standard conditions for temperature and pressure Thermo mechanical fatigue test Universal testing machine Weather testing of polymers Stabilizers for polymersReferences edit Environmental Test Chamber 1 Brief primer on environmental test chambers and rooms from GlobalSpec a b Environmental Test Chambers natc ht com Nevada Automotive Test Center Retrieved 24 May 2021 2 Page from official IEST website Retrieved from https en wikipedia org w index php title Environmental chamber amp oldid 1219343124, wikipedia, wiki, book, books, library,
