Stuttgarter Hochspannungssymposium 2021

Power transformer electrical substation
Virtual
Germany
Power Generation and Transmission
-

Meet our experts at  the virtual Stuttgarter Hochspannungssymposium 2021 and learn more about DGA monitoring.

On Wed 3 March at 11:00 Sales Manager Andreas Hilgers will present: "Überlegungen bei der Spezifizierung eines  DGA Online Monitoringsystems" .

Read more about Stuttgarter Hochspannungssymposium

Benefits of Vaisala’s DGA Monitoring Technology

Stability

High gas extraction rate, novel vacuum IR reference method and patented autocalibration leads to more reliable results and excellent long-term stability.

Long Lifetime

Maintenance free operation through robust design and hermetic metal structure of the oil and gas handling system. 

No moving parts in the optical IR measurement module.

No consumables and no gas cylinders.

Out of the Box Performance

Online DGA monitoring provides real time view of the transformers condition.

Enabling corrective actions taken on time.

 

Vaisala offers a range of specialized online measurement equipment for the power industry. The reliable online measurement of dissolved gases and moisture in transformer oil, dew point, humidity, density, temperature, and pressure helps to ensure that high-voltage assets can operate at maximum efficiency while supporting the planning of predictive maintenance designed to extend asset lifetime and minimize unexpected outages.

Senja Leivo

Expert Insight: Online DGA Monitoring of Power Transformers

Do you know the key fault gases and why they form in transformers?

Find the fundamentals of dissolved gas analysis for power transformers and get to know the data from field tests of Vaisala online monitors. 

Power industry professionals

Download the eGuide

Download now and discover 8 ways of improving your power transformer and high-voltage asset monitoring. Online monitoring helps make better-informed decisions, on-time and on budget.

Download and expolore Vaisala Power instruments and services offering and get ready to leap ahead of the game. Make maintenance, upgrade or overhaul of your power transformers smarter.

Vaisala Humicap sensor structure

Uniquely robust sensors

Vaisala’s HUMICAP® were the first ever capacitive sensors used to measure moisture in oil online, and have since become a virtual industry standard. 

The sensors have specifically been developed to measure even very low moisture levels in oils — mineral, vegetable and synthetic. The HUMICAP® sensors, manufactured in Vaisala’s own cleanrooms, have seen use in all corners of the Earth and even Mars.

Get all the gains

Robust reliability

  • Accurate water saturation and PPM measurements in rapidly changing conditions.
  • All equipment comes with NIST or Accredited calibration and is field calibratable.
  • No moving parts in transmitters.

Long-term stability

  • Thin film polymer sensor designs protect from contamination and are highly selective to water  only .
  • Capacitive technology provides long term stable measurement.
  • Insensitive to additives or contaminants in oil.
  • Auto-recovery from full saturation.

Rapid Response

  • In situ, real time measurement of moisture in oil as true relative saturation (%RS).
  • Eliminates need for sampling and lab analysis for moisture.
  • Easy installation via ball valve. 
  • Installable even in energized transformers.

Moisture in oil products