Thermal Shock Chambers are typically used to perform environmental stress screening of electronic components, aerospace parts or any other product that needs this type of test.
An integral part of the Thermal Shock Chamber are the test zones. Normally these will be one hot zone and one cold zone. A basket which contains the test specimen is moved from one zone to the other exposing the specimen to a rapid change in temperature. The system used to transport the test basket is normally and electric or pneumatic in nature.
Although most Thermal Shock Chambers have two test zones, some also have three. The third zone serves either as an ambient zone or is another hot zone when the chamber is configured as a "double capacity" system. Double capacity have two hot zones and two test baskets which move from zone to zone with two test loads instead of one (thus "double capacity").
The cold zone of a Thermal Shock Chamber needs to be made cold and the hot chamber needs to be made hot. Typically Thermal Shock Chambers have a temperature range of -70C to +170C. The temperature range is achieved by equipping the hot chamber with electric heating elements and the cold chamber with mechanical refrigeration, LN2 or Liquid CO2, or a combination of mechanical refrigeration and LN2 or CO2.
To ensure adequate temperature recovery time for a product being tested, the compressors on a Thermal Shock Chamber are sized to provide adequate refrigeration. This will ensure that the product temperature recovers in a given time when it enters the other zone. Heating elements are also sized accordingly.
Since the size of the compressors used for most Thermal Shock Chambers tend to be on the large side, they are typically water cooled or remote air cooled. Should the compressors on their own not be large enough to cool the cold zone, LN2 or CO2 Boost can be added. However, using LN2 or CO2 can become expensive over time if the chamber is used often and therefore mechanical refrigeration is normally preferred. If LN2 or CO2 use is not an issue, then one could purchase a chamber that only uses these gasses and no mechanical refrigeration at all.
Typical manufacturers of Thermal Shock Chambers are Tenney, CSZ, Thermotron, Espec, Blue M, Delta Design, Ransco, Despatch and Associated Environmental. They are available in many different sizes and configurations. - 15254
An integral part of the Thermal Shock Chamber are the test zones. Normally these will be one hot zone and one cold zone. A basket which contains the test specimen is moved from one zone to the other exposing the specimen to a rapid change in temperature. The system used to transport the test basket is normally and electric or pneumatic in nature.
Although most Thermal Shock Chambers have two test zones, some also have three. The third zone serves either as an ambient zone or is another hot zone when the chamber is configured as a "double capacity" system. Double capacity have two hot zones and two test baskets which move from zone to zone with two test loads instead of one (thus "double capacity").
The cold zone of a Thermal Shock Chamber needs to be made cold and the hot chamber needs to be made hot. Typically Thermal Shock Chambers have a temperature range of -70C to +170C. The temperature range is achieved by equipping the hot chamber with electric heating elements and the cold chamber with mechanical refrigeration, LN2 or Liquid CO2, or a combination of mechanical refrigeration and LN2 or CO2.
To ensure adequate temperature recovery time for a product being tested, the compressors on a Thermal Shock Chamber are sized to provide adequate refrigeration. This will ensure that the product temperature recovers in a given time when it enters the other zone. Heating elements are also sized accordingly.
Since the size of the compressors used for most Thermal Shock Chambers tend to be on the large side, they are typically water cooled or remote air cooled. Should the compressors on their own not be large enough to cool the cold zone, LN2 or CO2 Boost can be added. However, using LN2 or CO2 can become expensive over time if the chamber is used often and therefore mechanical refrigeration is normally preferred. If LN2 or CO2 use is not an issue, then one could purchase a chamber that only uses these gasses and no mechanical refrigeration at all.
Typical manufacturers of Thermal Shock Chambers are Tenney, CSZ, Thermotron, Espec, Blue M, Delta Design, Ransco, Despatch and Associated Environmental. They are available in many different sizes and configurations. - 15254
About the Author:
A good source of Thermal Shock Chambers are refurbished systems. Temperature Humidity Chambers are yet another type of environmental chamber that can be obtained used and refurbished.
