Skip to main content


The TRANSFIX is an 8-gas on-line transformer DGA monitoring unit. Using specially developed advanced photo-acoustic detection technology, the TRANSFIX measures all significant fault gases (in ppm) as outlined by international standards as well as moisture in oil (%RH & ppm). The measurement of these gases allows the user to detect and diagnose a complete range of transformer faults.



  • Medium and large sized transformers.
  • Medium/High/Critical risk and/or consequence of failure.
  • Generation, Transmission and industrial transformers.
  • Complete transformer monitoring and diagnostics.


  • Transformer faults detected in their infancy, minimizing costly unplanned outages and equipment failure.
  • Transformer output optimized safely, maximizing your assets.
  • Photo Acoustic Technology – no costly consumables/calibration gases required.
  • Transformer ageing can be calculated.
  • Detection and diagnostic of transformer faults from results.
  • Designed for field use – global installation by almost all major utilities.


  • DGA & Water – Eight gases (hydrogen, methane, ethane, ethylene, acetylene, carbon monoxide, carbon dioxide and oxygen) plus moisture and nitrogen calculation.
  • Inputs/Outputs for additional sensors including load and temperature.
  • Easy Installation – Simple, straightforward procedures.
  • Hourly Sampling – Real-time DGA results down to once per hour.
  • Perception – PC software allows downloading, trending and analysis of results.
  • Communication Options – Extensive local and remote communications options.
  • Alarm Settings – Sophisticated programmable alarm system.
  • Acceleration of sampling rate – automatic increase in sampling rates if gas concentrations exceed caution or alarm settings.
  • Minimal Maintenance – Reduces expense and inconvenience for user.

Download Kelman TRANSFIX Fact Sheet (PDF, 984 KB)