One way to reduce the number of pressure gauges in the factory is to stop installing shock-proof pressure gauges according to habit (for example, placing pressure gauges at the discharge port of each pump). Instead, look at the requirements of each device individually. During the review process, you should ask: "How to read this rubric?" and only install one if there is a logical answer to the question. If the pressure gauge only indicates that one pump is running, it is not needed because the pump can be heard and seen. If the pressure gauge indicates the pressure (or pressure drop) in the process, this information is only valuable if certain operations can be performed on it (such as cleaning the filter), otherwise, it will be useless. If you approach the specifications of the pressure gauge with this mentality, the number of pressure gauges used will be reduced. If the factory uses fewer and better meters, reliability will increase.