The Calisto 9 is Morgan Schaffer’s top-of-the-line multi-gas on-line monitor.  Loaded with industry-leading features to provide the most complete DGA asset protection, Morgan Schaffer’s proprietary gas chromatography system and substation hardened electronics deliver a high-performance on-line DGA solution with the accuracy and reliability you have come to trust.




  • Measures all seven fault gases plus oxygen and nitrogen
  • Industry leading detection limits
  • Automated self-calibration using certified primary grade gas
  • Intuitive front-panel display interface
  • Built-in oil circulation and flow monitoring
  • Continuous enclosure and oil conditioning
  • Communication protocols: DNP3, Modbus, IEC 61850 (optional)
  • Vacuum tolerant
  • Substation hardened communication electronics
  • Built-in moisture and solubility coefficients for all common insulating fluids


  • Accurately monitor all atmospheric and fault gases
  • Identify and monitor faults using any diagnostic method
  • Be alerted to unintended air ingress or accelerated oxidation
  • Ensure total combustible and dissolved gases remain within safe limits
  • Monitor any gas profile, from very low to extremely high concentrations


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