Why use a gas mixture to test connectors

Why use mixed flow gas to test connectors? In fact, Mixed Flow Gases is a test that was developed specifically for similar corrosion tests commonly used on connectors. Mixed flow gases (MFG) are used to evaluate the performance of connectors under simulated storage or operating conditions that may be encountered during use, and it can also be used to measure the effects of these environmental factors on plating degradation. By testing connectors with MFG, it is possible to see how performance is affected in the field and to show whether the materials used in the connector will fail due to problems such as oxidation or corrosion. How is the test carried out?MFG involves exposing the connector set to indoor gases of sulphur dioxide, chlorine, hydrogen sulphide and nitrogen dioxide.The test is carried out using a mixture of Class IIA gases flowing around the parts for 14 days (7 days uncoordinated / 7 days coordinated). It is important to note that this test should be performed in a dedicated chamber where the parts are exposed to the gases and the humidity and temperature are controlled by the chamber.MFG, like many tests, Low Level Contact Resistance (LLCR) is used to pass or fail a part.LLCR is performed prior to and after the test is performed at the MFG to determine whether or not the connector pairs have met the standard.MFG is also used to determine whether or not the connector pairs have met the standard.MFG is performed in a chamber where the parts are exposed to the gases.

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