SYSTEM AND FILTER INDICATOR GAUGE

摘要

A compressor in fluid communication with a filter is disclosed. A gauge is used with the filter and is configured to react to a pressure drop across the filter and indicate an increasing amount of contaminants captured by the filter. The gauge is provided with a dial having multiple scales thereon. A unitary indicator, such as a needle, is further provided with multiple indicating portions which can be used to indicate a property of the fluid, such as a differential pressure across the filter, and can simultaneously indicate a property, such as an economic cost associated with running the compressor with a filter having accumulated contaminants.

主权项

1. An apparatus, comprising:
an air compressor; a filter in fluid communication with the air compressor; the filter being structured to capture contaminants from air received therein and to provide filtered air, the filter having a pressure drop associated therewith that increases in relation to the amount of captured contaminants; an indicator gauge in fluid communication with the filter, the indicator gauge including a unitary movable indicator operative to move in relation to the pressure drop across the filter, wherein the unitary movable indicator is structured to provide a first visible indication related to a pressure and simultaneously provide a second visible indication related to an economic parameter associated with operating the air compressor while the filter is in the state of having accumulated the amount of captured contaminants corresponding to the pressure drop.