Transformatordag 2023

Power plant
Fletcher Hotel
Doorwerth, Netherlands
Power Generation and Transmission

Come and meet us at Transformatordag 2023 organized at Fletcher Hotel Doorwerth in the Netherlands.

Our experts as well as representatives of our local distributor Flux Transformer Services, FTS will be happy to discuss our solutions for online monitoring for power transformers. 

Read about Transformatordag 2023.

Fletcher Hotel Doorwerth
Kabeljauwallee 35
6865 BL Doorwerth, NL

Meanwhile you may want to learn more on Vaisala solutions below.

Benefits of Vaisala’s DGA Monitoring Technology


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.

Power Transformer

Download New Edition of Power eBook

We invite you to download this eBook and explore Vaisala Power instruments and services offering.

Get access now

Here you will have instant access to various tools that will help you with your applications needs including:

  • Experience - What makes Vaisala different
  • Information of Applications, Parameters, Instruments
  • Calibration and Repair Services information
  • Informative video links
  • Collection of Webinars
Power transformer switchgear

Power transformers eBook

See for yourself how you can help prevent transformer failure with the help of Vaisala solutions and technologies.

Monitor Transformer Oil with MHT410

Moisture, Hydrogen and Temperature Transmitter MHT410

Single-gas monitor as early warning indicator of a fault condition.

Senja Leivo

Meet the expert: Senja Leivo

Ms. Senja Leivo is the Senior Industry Expert at Vaisala and an active member of CIGRE working groups.
Her professional focus is on condition monitoring of power transformers. With 20 years of experience she is responsible for identifying the strategic trends and new monitoring needs within the industry, as well as bringing customers’ voice close to the Vaisala’s product development. Senja holds a Master of Science degree in Materials Engineering.

Mundo do DGA

Download white paper: The world of DGA - and its uncertainties

This white paper by Senior Industry Expert Senja Leivo describes the key aspects involved when reading the monitor’s technical specifications and evaluating its performance against laboratory DGA.

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.

Related Products for Moisture in Oil

Moisture in oil probe MMP8

MMP8 for Continuous Online Measurement​

Vaisala HUMICAP® Moisture in Oil Probe MMP8 enables fast and reliable measurement of moisture in oil.

MMT330 Moisture and Temperature Transmitter Series for Oil

Moisture and temperature transmitter MMT330

The MMT330 series enables fast and reliable detection of moisture in oil in central lubrication systems, hydraulic systems and power transformers. Three probe options offer solutions for various installation requirements, like high pressure, tight spaces and pipeline installations. The series is also compliant with DNV GL 2.4 type approval (Class B).

MMT162 Compact Moisture in Oil and Temperature Transmitter for OEM Applications

Moisture and Temperature Transmitter for Oil MMT162

Excellent economical solution for reliable on-line detection of moisture in oil even in the most demanding applications. The sensor’s excellent chemical tolerance provides accurate and reliable measurement over the measurement range.

MM70 Hand-Held Moisture and Temperature Meter for Spot-Checking in Oil

Hand-Held Moisture and Temperature Meter for Spot-Checking in Oil MM70

Reliable MM70 is an ideal tool for the preventive maintenance of oil-filled systems. The water activity measurement indicates the margin to free water formation, which causes severe problems in lubrication systems. Excellent pressure and temperature tolerance.

MMT310 Series Moisture and Temperature Transmitters for Oil

Moisture and Temperature Meter Series MMT310

Vaisala HUMICAP® Moisture and Temperature Transmitter Series MMT310 is a fast and reliable on-line detector for moisture in oil. Used in for applications such as e.g. monitoring of transformer oil and of lubrication systems in marine and paper industry.

Monitor Transformer Oil with MHT410

Moisture, Hydrogen and Temperature Transmitter MHT410

Single-gas monitor as early warning indicator of a fault condition.