Vaisala MMT330 Moisture and Temperature Transmitters for Oil – For Transformers Oil Monitoring and for Hydraulic and Lubrication Systems


Vaisala HUMICAP® Moisture and Temperature Transmitter MMT330 enables fast and reliable detection of moisture in oil in transformers and in central lubrication systems, hydraulic systems.

Key Benefits

  • Easy to install and operate

Installation through ball valve. No need to shut down the process


  • Fast

Online, real-time detection of moisture in oil without sampling.


  • Reliable

Tells the true margin to water saturation point in all changing conditions, taking into account e.g. temperature changes and aging of oil.