A differential pressure monitor is a device used to measure the difference in pressure between two points. It is commonly used in industrial settings to measure the pressure of gases and liquids in pipes, tanks, and other containers. Differential pressure monitors are essential for maintaining the proper pressure levels in systems, as they can detect any sudden changes in pressure. They are also used to detect leaks in pipes, as well as to monitor the flow of liquids and gases. Differential pressure monitors are typically composed of two pressure sensors, one at each point of measurement, which are connected to a display device. The display device shows the difference in pressure between the two points, which can then be used to make adjustments or take corrective action.