Super User Self Powered Content Gauges Procon Instrument Technology has vast experience in Tank Contents Gauging Systems below are our AJD Instruments Self Powered Content Gauges suited for Industrical and Marine applications. E.S. Sensor Externally Mounted Sensor Externally mounted self powered gauge, it is suitable for both industrial and marine applications. LEARN MORE S.M. Sensor Externally Mounted Sensor Externally mounted self powered gauge, it is suitable for both industrial and marine applications. LEARN MORE I.M. Sensor Internally Mounted Sensor Internally mounted self powered gauge, it is suitable for both industrial and marine applications. LEARN MORE S.T. Sensor Internally Mounted Sensor Internally mounted self powered gauge, it is suitable for both industrial and marine applications. LEARN MORE