Vaisala MM70 Hand-Held Moisture and Temperature Meter for Spot-Checking in Oil – For Transformers and Oil Pipelines


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.

The optional MI70 Link Windows® software in combination with a USB connection cable is used to transfer logged data and real time measurement data from the MM70 to a PC.


Key Benefits

  • Convenient

No reference oil needed for recalibration.


  • Easy in-line process checking

No need to drain the oil. The probe can be inserted directly into the process pipe through a ball valve without draining the oil in the system.


  • Cost-effective multi-probe operation

Supports the use of Vaisala’s humidity, dew point, and carbon dioxide probes, making it a versatile investment applicable to several multi-parameter applications. One or two probes can be connected simultaneously.