This automatic gain gas concentration terminal is designed for PH3 in circulating fumigation.The automatic isolation device is used to open the acquisition terminal,which can effectively prolong the life of the sensor.Conibining with the construction characteristics and data business of the granary site,the wireless module is configured for the terminal,and the standard wireless interface is provided for the next step to build the complete data collection and network transmission system.The experimental results show that the system can save fumigation,prolong the replacement cycle of sensors,reduce the cost and improve safety,which will be the trend of technology improvement in grain storage industry.
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