Quality Control Laboratory
The quality of all of our manufactured and repaired parts is very
important at SIS. We are constantly improving our techniques to
enable us to produce higher quality products and services. For
example in our filament repair shops we are continually developing
new jigs to align and tension the filament wires in the spotwelding
process. After repair all filaments are inspected using video
inspection equipment to assure accurate alignment of the filaments
as well as quality repairs. We utilize standard manual measuring
systems throughout the manufacturing process to insure efficiently
produced, quality parts. All production runs are QC inspected
initially and then throughout the run for key parameters, before
final inspection is done on the completed parts.
ISO 9001-2000 Certified
In 2000 SIS hired a quality control manager and began the process
of applying for ISO certification. In 2001 SIS received its ISO
9001-2000 Certification for all of our shops as well as our order
processing operations. Quality is of prime importance to SIS and
our customers and we continue to assure that we provide products made
to the customers requirements.
Video Inspection
SIS
has invested in the latest
state-of-the-art systems to enable us to inspect manufactured parts to customers' requirements. In
addition to a wide variety of microscopes,
gages, verniers, micrometers and other tools, we have several optical
systems in our shops for the inspection of parts we manufacture and
repair. The heart of our operations is a Werth Video Check IP
System. This system uses optical, laser and touch probes to inspect parts and verify the dimensions of the finished components. Printed
reports and statistical analysis of parts can be obtained with this system.
 
Werth Video
Check IP System Equipped with Optical,
Laser and Touch Probe options .
Using
Werth Inspection System with probe to verify hole positions to
within 0.0001" tolerances
Video Inspection System
- Parts are visuallly inspected under magnification for small burrs or defects.
 
RAM Optical
Measuring system - utilized to inspect filamaments and other parts for alignment
and dimensions
One of the instruments utilized at SIS for quality control inspection
is the RAM Optical Measurement System. The system consists of
a 20-250X video microscope with a computerized 3-axis digital
microprocessor. This enables the accurate measurement of distance
and diameter to within 0.00005 inch accuracy. Geometric calculations
such as diameters, radius of curvature, angles, and deviations
are easily computed with the digital microprocessor. Both metric
and English measurements as well as instantaneous conversions
between the two can be achieved. The system is used to measure
holes, check alignment on filaments and perform other quality
control measurements on finished products. The microprocessor
controls and readout displays of the optical measurement and inspection
system are easy to use and read
Video monitor display showing Finnigan MAT 4500 filament. From
this screen the diameter and length of the filament can be measured.
Another useful tool is the RAM Video Inspection System. This system
uses a video system that has a 1 inch depth of field at 20 times
magnification. As a result it is an excellent tool to align filaments
over the ion entrance hole in the mass spec source as well as
to visually inspect filaments.
Using the RAM Video Inspection System to align a Finnigan 3200
filament over the ion entrance hole in the Source
Leak Testing
After TIG welding the welds should be tested to assure that they are leak
tight. AT SIS we use an Alcatel ASM182T Leak detector to test all of our
vacuum welds down to assure that the welds will not leak even at very low vacuum
levels.
All vacuum fittings that are TIG welded and brazed in our shops
are leak tested before they are returned to our customers. Shown
below is the new helium leak tester which can detect leaks down
to 2 x 10-11 atm.cc/sec. This leak detector utilizes a rugged
turbo pump design for fast pump down and superior performance.
If you have parts which you feel may be leaking, give us a call
and we can test them for you.
Alcatel ASM 182T Helium Leak Detector
- All welds of components are checked for vacuum service
Leak testing the internal metal bellows on a Finnigan MAT GC/MS
transfer line.
Surface Finishing
After parts have been machined, and then finished utilizing various
techniques available in our shops including sandblasting and electropolishing,
the surface finish must ber verified. This can either be accomplished
using the Surf-Test system shown below or the finish can be erified using our
Werth optical testing system shown above.
Surface
finishes can be measured accurately using the Surf-Test
Other Measuring Equipment
In
addition to all of the high tech equipment shown above, we also have a wide
range of verniers, micrometers and other measuring equipment to measure parts
during and after manufacture.
Various Microscopes and Gages
- Inspection equipment is used throughout the manufacturing process
to assure customer satisfaction
Quality
is a part of everything that we do.
© 1996-2008 Scientific Instrument Services, Inc.
[Trademarks]
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