What is a differential pressure gauge?
A differential pressure gauge shows the difference in pressure between the clean and dirty sides of a filter. If the filter is dirty, the differential is high. With a high differential, air flow is being restricted due to plugged pores on the cartridge material. Typically, a differential of 5″ of water is normal. Over 10″ it indicates that you are not cleaning the fitlers properly. The pulse system may not be working properly. This gauge effectively tells the operator if the filters are being cleaned properly. Some systems automatically shutdown the vacuum if the level rises above a set position.
