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Categories of exhibits

Vacuum Feedthrough

Exhibit no. 850

The operation of a vacuum instrument, such as a mass spectrometer often requires the transmission of electrical currents, voltages or signals across the walls of vacuum chambers. This is possible with electrical feedthroughs. 

They often consist of ceramic-to-metal assemblies, where the ceramic serves as an electrical insulator between the conductor and the connection flange. In addition to providing leak-tightness in high and ultra-high vacuum, some feedthroughs are resistant to high temperatures used during bake-out cleaning.

The exhibit comes from a triple quadrupole TSQ manufactured by ThermoQuest Finnigan in 2001.

Wikipedia: Feedthrough

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