The present invention relates, in general, to mini air compressor and
, more particularly, this invention relates to air compressors used on locomotives for supplying compressed air to brake systems and other uses and, still more particularly, it relates to an air compressor arrangement in which a computer or microprocessor is employed to read the outputs of sensors located at critical locations on and/or in the air compressor and its associated apparatus for the purpose of providing information on the operating condition of the air compressor and such associated apparatus and for shutting down the compressor upon the occurrence of a critical event.