Resurrection of a Pfeiffer HLT 260 Helium Leak Detector – Oil Contaminated Turbo Molecular Pump

Published: 04 August 2023
on channel: Advanced Tinkering
13,698
577

I received this decommissioned helium leak detector from Pfeiffer Vacuum. Helium leak detectors are used to detect the smallest leaks in large vacuum systems. For this purpose, helium is released around the flanges and weld seams, for example. If this helium enters the vacuum system through a leak, the detector can detect it with its mass spectrometer.

At the beginning it looked as if the device was in good condition, but then I made an unpleasant discovery...

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