Test chambers are designed to examine how materials behave in different environments for a wide range of applications. Common requirements are to measure corrosion or to test components to destruction. The chambers’ primary function is to speed up the process being studied to simulate an extended time in an environment with certain characteristics.
Investigating the long term resistance of materials to corrosion requires speeding up the corrosion process: for example, a salt spray testing chamber would recreate the effects of a harsh offshore environment to evaluate the resistance of paint coatings or phosphated surfaces. This would simulate the effects of years of exposure to the corrosive environment, without introducing other contaminants into the test area, to examine compliance with corrosion resistance standards such as MIL-STD-202H, BS EN 60068-2-52 or ASTM-B117.
As the environment in the chamber is designed to corrode metal or similar materials, the air extraction system will also corrode if metal fansand metal duct work are used.
Axair Fans offers corrosion-resistant polypropylene fans suitable for this type of application. They are the single inlet centrifugal type, with a pedestal for floor or wall mounting.
Inverters are available for fine speed control of the fan. Inverters with pre-selected speeds can be supplied if required.
Axair also offers a range of different types of fans suitable for other types testing such as heat or humidity testing.
For more information about extraction from test chambers, contact 01782 349 430, email sales@axair-fans.co.uk or visit the polypropylene fans page.