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The Thermotron Altitude Chamber is used to test equipment under high altitude conditions. The system can be configured to control the interior pressure and temperature to simulate the conditions that a radiosonde would experience during a balloon flight. The chamber is cooled by a two-stage refrigeration system and heated by a set of electric resistance heaters. A 240-liter liquid nitrogen tank connected to the chamber via a vacuum-insulated hose provides additional cooling when simulating high-altitude conditions. The system is automatic and controlled by a graphical user interface. An internal log function keeps a continuous record of the chamber’s temperature and pressure. The controller allows users to pre-program temperature/pressure profiles. The chamber is equipped with a GPS simulator for evaluating GPS derived winds and height measurements. |
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Chamber Specifications |
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Temperature range: Pressure range:
Pressure range change rates:
Interior volume:
Test connections: |
-75 °C to +177 °C Ambient down to 5 hPa (approximate elevation of 35,356.8 meters)
1000 to 117 hPa (approx. 176 hPa per minute); 117 to 45 hPa (approx. 7 hPa per minute); 45 to 5 hPa (approx. 3 hPa per minute)
1.82 cubic meters (1.22 m W × 1.22 m D × 1.22 m H)
Four ports with hermetically sealed interchangeable connectors
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