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High
Vacuum Technology has been finding uses in increased
number of industrial applications. Especially so, in the
case of development of nuclear components which calls
for a high degree of vacuum tightness and a reliable
leak detection method which can detect minutest leak
paths.
The
technique adopted in this spectrometer and the selection
of helium gas as the tracer, compliments each other.
Helium is known for its nontoxic, non-hazardous,
nondestructive, available plentiful, relatively
inexpensive and its presence in the atmosphere is a
negligible 5 ppm and has a low atmospheric partial
pressure which enables helium to present a low
background signal. These special characters enables
helium to go through smallest leak paths without
effecting parts or process and thus be able to leak
detect easily, reliably and economically. The leak
detectors can be used for testing and measuring vacuum
integrity in products like: Automotive parts, Bellows,
Beverage can and food containers, Pressurized fluids,
Vacuum packed solids, Electronic Feedthroughs, Electron
tubes, Glass to metal seals, Heat Exchangers, Hermetic
seals, Medical devices, Nuclear components, Quartz
crystal packages, Refrigeration parts, Relays,
Semiconductor packages, Transducers, Vacuum Hardware,
Vacuum switches and in Systems like Electronic
microscopes, Evaporation coils, Freeze dryers, Ion
implanters, Nuclear reactors, Vacuum evaporators and
Vacuum furnaces.
HINDHIVAC's
Mass spectrometer leak detector is a complete system
used for locating and measuring the size of the leak
either into or out of a device or a container. In
operation, this method of leak detection is initiated
when the tracer gas, helium, is introduced to a test job
which is connected to the HMSLD system. The helium from
the test job leak travels through to system, its partial
pressure is measured and results are displayed on the
measurement meter. The HMSLD operating principle
consists of ionizing gases in a vacuum and accelerating
various ions through an electric and magnetic field. The
helium ions are separated and collected and the
resulting ion current is amplified and measured as a
leak in m.bar lits/sec..
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