Optimus DGA Monitor OPT100

The Optimus DGA Monitor is the right solution for safe guarding critical transformers in harsh environments. It provides real-time, trouble free fault gas monitoring for your power transformers – with no false alarms or maintenance.


  • Optical IR sensors designed and manufactured in Vaisala cleanrooms
  • Spectral scanning provides selective gas measurement
  • Hermetically sealed structure tolerates vacuum and pressure variation
  • Stainless steel and aluminum components and piping in contact with oil
  • Installation and commissioning in as little as two hours
  • Continuous operation with roughly one-hour output interval – no data averaging needed



Measurement cycle length 1 ... 1.5 hours (typical)

Data storage At least 10 years

Operating voltage 100 ... 240 VAC, 50/60 Hz, ±10%

Required minimum fire1) point +125 °C
of transformer oil


Measured Parameters in Oil

Methane (CH4) 
Ethane (C2H6)
Ethylene (C2H4) 
Acetylene (C2H2) 
Carbon monoxide (CO) 
Carbon dioxide (CO2) 
Hydrogen (H2)
Moisture (H2O) 



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