As an important part of the space environment simulator, the vacuum system is generally divided into rough pumping and high vacuum. It plays a key role in simulating the space vacuum background during the spacecraft thermal test. Once the vacuum test is abnormal during the thermal test process, Not only can the test not be carried out, it may even cause damage to the spacecraft.
To verify the correctness of thermal design of spacecraft and the ability of thermal control systems to adapt to various thermal environments at various flight stages and to determine the best thermal control parameters for thermal control systems, to assess and validate the capabilities of spacecraft in the development of spacecraft. In the ground must carry on the sufficient ground test, the spacecraft vacuum thermal environment test is realized in the space environment simulator, the vacuum is the indispensable environmental condition. Once the space environment simulator vacuum environment is abnormal during the establishment or maintenance process, the effect of the spacecraft product ground simulation test will be difficult to guarantee and may even cause harm to the spacecraft product itself. For example, if the degree of vacuum abnormality occurs in the rough pumping stage, the tests performed by the spacecraft during the launch phase will not be completed. Therefore, it is necessary to carry out research on the vacuum test abnormality diagnosis technology of hot test. When the space environment simulator vacuum is abnormal, the diagnosis is made and the reason is analyzed. The test personnel are promptly prompted to perform the treatment to ensure that the heat test runs smoothly.
Simulating the ultra-high vacuum environment in space in a large space environment simulator is quite difficult, and there is no need to do so. From the thermal balance test, as long as the air convection and heat conduction in the space environment simulator is overcome, the test requirements can be satisfied.
At present, Shenzhen Industrial Mining Network provides test thermal conductivity type gas sensor MTCS2601, the specific products are as follows:
Thermal Conductivity Gas Sensor MTCS2601 Product Features:
Heat conduction principle
Low-vacuum thermal conductivity sensor can be tested
Silicon Devices in SMD Ceramic Packages
Very small size, 7*5mm
Low power consumption and fast response
Excellent sensitivity in the pressure range of 0.01 to 100 mbar. Pressure range can be extended to 0.0001~1bar
Solar Inverter Kit,Wifi Module,Inverter Parallel Kit,Monitoring Card
Shenzhen Unitronic Power System Co., Ltd , https://www.unitronicpower.com