In the News - Abbess Instruments - Vacuum Chambers - Pumps and Systems

Cold Facts ~ Customer Spotlight ~ www.cryogenicsociety.org

Spotlight: Abbess Provides Thermal Vacuum Systems

Recently the Abbess team has taken the same focus upon performance capacity and precision control and brought it to bear on the cryo storage market. Abbess now provides custom integration of redundant modular cascade refrigeration into large and complex bio sample storage systems and has developed a line of large capacity -80°C cascade bath/reservoir chillers by working directly with leaders in the cold chain industry to develop support equipment.
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Scholarly Research from the University of Wisconsin–Madison

Long-Term Testing and Properties of Acrylic for the Daya Bay Antineutrino Detectors

by M. Krohn, B. Littlejohn, K. M. Heeger

ABSTRACT: The Daya Bay reactor antineutrino experiment has recently measured the neutrino mixing parameter sin22θ13 by observing electron antineutrino disappearance over kilometer-scale baselines using six antineutrino detectors at near and far distances from reactor cores at the Daya Bay nuclear power complex. Read more »

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Assembly Magazine

Leak Testing Large Castings

by Austin Weber
Testing engine blocks, transmission cases, oil pans, aluminum wheels and other large automotive castings can be challenging. For instance, a bare engine block can be more than 2 feet long and weigh more than 85 pounds. Read more »

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Assembly Magazine

New Products: Upgraded Leak-Test Vacuum Systems

Several upgrades are available for this company’s manual high-visibility leak test vacuum systems. The most notable is a vacuum cycle controller (VCC) that automates vacuum, hold and vent control functions and vacuum monitoring. This digital VCC permits a single automatic altitude and vacuum set point. Read more on Page 51 »

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Assembly Magazine

Leak Testing Aerospace Parts

by Austin Weber

Leaks are never good. They’re even worse if you’re flying in an aircraft at 40,000 feet. That’s why aerospace manufacturers and suppliers spend countless hours testing critical components. Fuel systems, engines, landing gear, ventilation systems and other aerospace devices that rely on numerous tanks, pumps, actuators, lines and fittings must be tested for tightness during both assembly and maintenance applications. Read on »

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MetroWest Daily News

Holliston company creates space simulation chamber

by Kendall Hatch / Daily News staff

HOLLISTON — Although the outside of the building is unassuming – the typical metal siding associated with industrial parks accompanied by the screech of equipment from neighboring landscaping companies – the inside is anything but. Read on »

Performance Specifications

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.