With the purge air method, heat recovery for balanced air mass flows can be determined for alternating, decentralised ventilation units. The uncertainties of the direct measuring method used so far due to inhomogeneous velocity and temperature profiles at the outlet of the ventilation units are circumvented by the scavenging air method and the measuring accuracy is higher. With the optional humidity conditioning the moisture recovery can also be determined. Further thermal performance indicators are the air volume flow in alternating operation and the balance, which can also be determined with the test bench. The test stand is equipped with an auxiliary fan so that continuously operating ventilation units can also be measured with the direct measuring method.
China
Application SMT, BGA, CSP, Flip Chip, LED Detection, Semiconductor, Packaging components, Battery Industry, Electronic components, Automotive parts, Photo-voltaic, Aluminium Die-casting, Moulding Plastic. Ceramics, other special industries.
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For checking the gas detection and gas measuring devices. All gases can be connected in 12 liter aluminum pressurized gas cans.
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A prerequisite for the adhesion of an adhesive or coating to a surface is wetting. For wetting to take place, the surface energy of the substrate must be greater than that of the coating. In particular, very many plastics have a very small surface energy and are correspondingly difficult to bond. Often the aim of a plasma treatment is to make a surface wettable and bondable. The wettability can easily be tested with test inks. Diener electronic supplies a test ink set with 8 liquids with surface tensions between 30 and 73 (105) mN/m suitable for most practical applications. There is also a set of 23 test inks, with additional gradations between 30 and 73 (105) mN/m.
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