Effects of different sensor packing methods on fresh environmental data monitoring of atmosphere controlled container

To know the effects of different sensors packing methods on fresh environmental data monitoring of atmosphere controlled container，a comprehensive regulatory test platform of atmosphere controlled container was set up，liquid nitrogen-filled atmosphere controlled test was carried out，the effects of three different sensor packing methods，including non-encapsulated，active ventilation and natural ventilation，on fresh environmental data monitoring，such as temperature，relative humidity and oxygen concentration were compared. The results showed that the impact of sensor packing method on fresh environmental data monitoring was as follows：temperature，relative humidity and oxygen concentration. Liquid nitrogen filling under non-encapsulated sensor packing，the temperature difference between front and rear was the smallest and the rate of cooling around the monitoring point was the fastest. Natural ventilation sensor packing had significant impact on relative humidity monitoring，the dehumidification rate lagged behind the other two packing methods. The impact of sensor packing method on oxygen concentration monitoring was not significant.