All performance specifications stated, including but not limited to, pump-down rates and vacuum levels make the following assumptions:
The Vacuum Chamber is empty.
The Vacuum Chamber and other system components are clean and dry.
The System is being operated at Sea Level
The ambient temperature is 18°C +/- 2°C
All system components, including those not supplied by Abbess, are appropriate for the system and are functioning properly.
The specifications are not impacted by the properties of your product.
If you require performance specifications for conditions other than those listed above, it is vital that you make this known to Abbess Instruments in writing. Generally Abbess Instruments recommends choosing chamber and pumping system qualities capable of achieving a theoretical vacuum at least an order of magnitude better than the desired operational vacuum.
It is to be noted that a specification described as '10-5 Torr' is a range, and means the clean, empty, dry chamber system is capable of reaching some undetermined value between 1.0x10-5 and 9.9x10-5 Torr: The (clean, empty, dry) chamber is deemed compliant whether its As-Built base vacuum is 1.0x10-5 Torr or 9.9x10-5 Torr. It does not mean that the chamber is guaranteed to reach every level within that range.
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Companies who manufacturer space instrumentation (including
satellites themselves) have to subject their products to Prototyping,
Flight Qualification, and Flight Verification phases. Before launch, the
products must experience space-like temperatures and vacuum levels, and
be shown not only to survive the extreme ranges, but also to operate
within specification before, during, and after. Space Simulation
Chambers are key to these tests, and Abbess Instruments of Holliston, is
one of the few companies in the world with the capability to
Abbess Instruments has a wide portfolio of Test systems capable of simulating a variety of space vacuums (pressures ≤10-4 Torr) … with or without heat and/or cooling. Please refer to our
Altitude Test Systems page for required testing pressures limited to ≥10-4 Torr (altitudes of up to 100,000 ft / 19miles/30km). Read more »
This system allows articles under test placed inside to be exposed to high vacuum pressure as well as various temperatures via the heated and cooled Thermal Plate Assembly. A Thermal Vacuum Cycle Controller (TVCC) is used to automate control functions.