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Providing superior
temperature
testing and
conditioning Chambers and Platforms
that are Sigma Quality is |
Sigma Systems has been the leader in industrial hot and cold temperature plates / platforms since we invented the product over 30 years ago. We use the latest off the shelf technology combined with our proprietary technology and custom made valves to make small, precise, quiet, durable plates for labs and production facilities. And Sigma's quality is legendary, in continuously operating labs and production facilities where our plates have been for over 30 years, more than 80% of the plates are still in operation... now that's quality.
Sigma provide two types of hot cold temperature plates, Cryogenic and mechanically cooled. Cryogenic plates provide exceptional fast performance with a lower initial investment. Mechanically platforms are ideal where fast ramp rates are not required and where extremely long soak times are needed or in environments where the discharge of coolants would not be acceptable, such as in clean rooms.
Sigma's thermal platforms provide a flat, thermally conductive, precisely temperature controllable aluminum surface that is ideal for conditioning and testing devices which have a flat surface for conductive heat transfer.
Cryogenic thermal
plate use L–CO2
or L–N2
for very fast cooling and a high density array
of serviceable electric resistance heaters is used for heating. Because
there is no compressor consuming power in these systems, higher wattage
heaters can be used so heating is very fast. Because heat is transferred by
conduction, temperature changes are affected in the DUT very quickly. Flat
sided devices that are either thin or that have good internal thermal
conductivity are perfect candidates for conditioning on a Sigma thermal
platform. Sigma thermal platforms allow virtually
unimpeded access to the thermally conditioned device while conditioning
continues. Easy access and compact size make them ideal for bench top use in
labs and production environments.
Sigma cryogenic thermal platforms deliver exceptionally low
gradients and high performance. Sigma uses a high density array of ultra
linear electric resistance heaters to provide smooth and fast heating.
Sigma’s cooling channels are milled directly into the platform to eliminate
cross boundary heat exchange issues. Sigma’s proprietary expanding cross
section inverted double helix design cryogenic cooling channel provides outstanding cooling efficiency, extremely low
gradients, and prevents the formation of dry ice blockages when using L–CO2
.
The result is accurate, fast, and reliable low gradient tests with minimum
cryogenic coolant cost.
Sigma mechanically cooled temperature platforms deliver exceptionally low gradients and reliable performance. Sigma uses a high density array of ultra linear electric resistance heaters to provide smooth and fast heating. Sigma's proprietary cooling design delivers the some of fastest cooling transitions available - 14°C per minute and better. Sigma provides mechanically cooled plates with single or double compressor (cascade) designs, providing a low operating temperature of –90°C.
If precision, speed, innovative design, and durable operation are of interest to you then Sigma Quality is the Ultimate Value.
Why Sigma Platforms are Superior
How to Select
the Correct Size of Platform
Chambers vs Platforms
Cryogenic vs Mechanical Cooling
Platform (plate) Accessories
Controllers and failsafes
Drill Mask for Thermal Platforms
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