Vaisala

OPT100

Optimus™ maintenance-free multi-gas DGA monitor for power transformers

OPT100

An online dissolved gas analysis (DGA) monitor for critical power transformers. It samples the oil using vacuum gas extraction and measures all seven fault gases plus moisture with reference IR sensing and autocalibration, with no carrier gases or consumables. Total gas pressure measurement detects air leaks in sealed transformers, and the integrated web interface removes the need for extra software.

Download datasheet (PDF)

Specifications

Technical specifications

Measured gases
H2, CH4, C2H6, C2H4, C2H2, CO, CO2 + humedad (H2O); O2 y N2 opcionales
Measurement ranges
0–10.000 ppm (CH4, C2H6, C2H4, CO, CO2); 0–5000 ppm (H2, C2H2); presión total de gas 0–2000 hPa
Compatible liquids
Aceite mineral y ésteres naturales o sintéticos
Operating temperature
-40 °C a +55 °C (ambiente); IP66
Outputs
RS-485 (Modbus RTU, DNP3); Ethernet (Modbus TCP, HTTPS, IEC 61850 opcional); 3 relés configurables
Power supply
100–240 V AC o 110–220 V DC

Features

Key features

  • Vacuum gas extraction: results independent of oil type, age and temperature
  • Autocalibration and IR measurement with vacuum reference — no factory recalibration
  • Total gas pressure detects air leaks without oxygen sensors
  • No consumables, carrier gases or moving parts in the optical module
  • Integrated web interface, no extra software; self-diagnostics with automatic recovery
  • Optional Duval Triangle diagnostics per IEC 60599
  • Robust mechanics: IP66 marine-aluminum enclosure, stainless-steel piping, magnetic pump
  • Installed in under 2 hours: connect oil, power and data

Applications

Typical applications

  • Condition monitoring of critical power transformers
  • Transmission and distribution substations
  • Condition-based maintenance (CBM) and prevention of unplanned outages
  • Transformers filled with natural or synthetic esters
  • Renewable generation sites and demanding environments — from arctic to tropics
  • Supervised end-of-life transformer operation

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