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Model 979 Series Helium Mass Spectrometer Leak Detector
DRAFT 9/15/03
Section 1. Introduction to the Model 979 Series
1.1 The Model 979
The Model 979 is a wide-range Helium Mass Spectrometer Leak Detector. It is
comprised of a turbomolecular high vacuum pump, spectrometer tube, valve block,
Vacuum Technologies’ Platform leak detector electronics, and an operator interface in a
stylish, yet rugged housing. The 979 is available as a stand-alone, bench-mount unit or as
a single or dual, dry or oil sealed mechanically pumped leak testing station on a cart.
Outline drawings for each configuration are shown in Section 1.1.1 “Model 979 Series
Configurations”.
The 979 uses Vacuum Technologies’ Platform leak detector electronics architecture to oper-
ate the spectrometer assembly, control the mechanical and high vacuum pumps, control the
valve block, and provide leak rate and system status information to the operator interface.
1.1.1 Model 979 Series Configurations
This section contains outline drawings of the various configurations of the 979 Series leak
detector.
Figure 1-1 shows the outline drawing and physical dimensions of the stand-alone,
bench-mount 979 Series Leak Detector.
Figure 1-1
979 Bench Mount Unit
Summary of Contents for 979 Series
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