Phosphine Gas Treatment of Wheat:

Wheat is treated with phosphin gas for a period of 15 days continously before it is stored in the ceilos. This ensures a proper storage of wheat for a long duration. For each of the 15 days, the wheat is treated for a pre-specified quantity of phosphin gas. This is achieved by using the analog output, the gradual opening & closing of the valve. The gas saturation in the chamber is measured using a sensor through Analog input. also included are timers, interlocks.