The hangman who failed to preserve the history of instant - the temperature and humidity of the film-based archives, including film copy, film material, photographic film, X-ray film, microfilm, aerial film, remote sensing film and so on. Because of their image and intuitive nature, they are widely used in the national economy and scientific research. From the beginning of the filming study, many films have been imprinted on the historical moments of the past century through the use of films. However, due to the improper use of methods in the preservation process, few films have been left in the past 100 years to protect the culture. Heritage, historical archives, and the enhancement of film management are urgently needed. The greatest impact on film is the temperature and humidity in the environment. Temperature and humidity monitors can be used for real-time monitoring and recording.
Films are now mainly based on cellulose acetate or lanthanon as the film base. The decay process of the motion picture film will slow down as the temperature decreases, and the decrease in humidity will also help prevent the mold from delaying the decay process. The use of a temperature and humidity recorder for the monitoring of the temperature and humidity in the environment during the storage of the film can not be delayed at all times. By verifying the low temperature and suitable humidity, it is beneficial to the long-term preservation of the film. In this regard, the understanding in various aspects is that Consistent. National film archives or other film preservation agencies all control the temperature and humidity of the warehouse as the primary condition for the preservation of the film. As for the level of temperature and humidity in the warehouse, the various film agencies do not have the same practices. The range of temperature and humidity control in the movie is related to the importance of the film. However, the long-term preservation temperature and humidity combination given by the International Organization for Standardization is (in the case of color films):
2°C, 20%~30% RH;
-3°C, 20%~40% RH;
-10°C, 20% to 50% RH.
The temperature and humidity control in the warehouse uses a self-reporting thermometer and hygrometer to detect the temperature and humidity in the environment. During the monitoring, it is necessary to pay attention to some of the monitored dead angles to ensure that the detection range is comprehensive. Real-time monitoring of the temperature and humidity in the environment is performed through a temperature and humidity self-recording instrument to ensure that the temperature and humidity can be determined at any time.
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