1. For grain storage, the most important thing is to control environmental conditions to limit various conditions that cause grains to deteriorate, thereby avoiding spoilage. Adjusting the temperature and humidity of the granary can play a certain role in this, but it cannot completely suppress the influence of microorganisms, insect activities or the respiration of the grain itself. And filling the warehouse with nitrogen to create...

2. To ensure low-oxygen or anaerobic environmental conditions in the granary, other gases must be used to replace the normal ambient gas. The stability, non-toxicity and low-cost of nitrogen are the best choice for its use in the granary. At this time It is necessary to detect the nitrogen content. How to distinguish the nitrogen content?

3. At this time, we need real-time detection of nitrogen. Once the nitrogen concentration is lower than the limit value, an alarm can be issued through the control system, and then the filling (nitrogen) operation can be started manually or automatically until the measured value of the nitrogen sensor is greater than Limit value. Since the grain was initially placed in the air