High voltage feedthrough

Exhibit no. 874

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.

Materials for use in vacuum must have a very low outgassing rate in a vacuum and, where applicable, be tolerant to the high bake-out temperatures. Besides glass-to-metal and ceramic-to-metal assemblies on stainless steel flanges, metal conductors in plastic flanges are used. Among the plastics, PEEK (PolyEtherEtherKetone) has relatively low out-gassing values.

The exhibit is a vacuum plastic (likely PEEK) electrical feedthrough flange for high voltage used in MALDI-TOF mass spectrometer Tof Spec 2E manufactured by Micromass in the 1990s.

Wikipedia: Feedthrough

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