Varian 938-41 Porta-Test Vacuum Helium Leak Detection System

Varian 938-41 Porta-Test Vacuum Helium Leak Detection System

Varian 938-41 Porta-Test is a portable, high-sensitivity helium mass spectrometer leak detector designed for industrial and scientific vacuum systems. It features a single-handle operation, requires no liquid nitrogen, and uses a Contra-Flow technology to measure leaks from 10^-3 to 10^-10 atm cc/sec.

• Technology: Employs a diffusion pump (often SD-200 or Stokes 110) and a helium sensing tube.
• Performance: Capable of detecting small leaks without throttling.
• Portability: Designed for easy movement around plants for testing vacuum furnaces, coaters, and electron beam welders.
• Display: Features a 50-segment LED bar graph for reading leak rates. 

System power up but not tested any further, cosmetic indication of previous use. Images form part of the description

Location K2