Back to product search

Vaisala DM70 Portable Dewpoint Meter

The Vaisala DRYCAP® Hand-Held, Portable Dewpoint meter DM70 is designed for demanding spot-checking applications of dewpoint.  The DM70 consists of an MI70 Vaisala indicator and is supplied with one of three probe options:

  • DMP74A -40…+60°C Td
  • DMP74B -60…+20°C Td
  • DMP74C -50…+20°C Td (for SF6 gas)


The MI70 indicator will accept 2x probes to run simultaneously, including a range of RH&T probes (from the HM70 range) and carbon dioxide probes (from the GM70) range.  The MI70 indicator includes a datalogging facility (2700 datapoints memory) and can be supplied with Windows® Software MI70LINK with USB interface for graphing of collected information.


Vaisala DM70 Portable Dewpoint Instrument specifications
  • Dewpoint measurement down to -60C
  • Shows measurement trends graphically (on the unit and via MI70LINK software)
  • Vaisala DRYCAP® Sensor technology for stability and reduced uncertainty of measurement
  • Multiprobe operation; RH&T and CO2 probes can also be connected
  • Displays various moisture parameters, ppmv, ppmw, absolute humidity and mixing ratio (probe dependent)
  • DMP74C probe specifically for Sulfur Hexafluoride (SF6) gas with no gas flow (insulation properties)
  • Data can be logged, and transferred to a PC via MI70 Link software
  • Rugged and reliable – even in extreme conditions
  • NIST traceable (certificate included)


Dewpoint measurement is particularly common in compressed air measurement to monitor the efficiency of driers.  The Vaisala DM70 unit maybe supplied with a sampling cell for this purpose.  Additionally, Fluidic offer a range of fixed Dewpoint instrumentation from Vaisala for continuous measurement.  The DM70 is commonly used as a calibration reference for fixed devices: connection cables are available for most Vaisala transmitters.


Fluidic are a recognised partner of Vaisala CEN (Industrial division) for Scotland and the North of England.  Our instrumentation engineers are product trained and able to help with instrument selection within the full range of Vaisala Dewpoint Portables.  Please call either office for more information (Glasgow 0141 641 5920,  Warrington 01925 572401).



  • Download DM70 Datasheet
  • Download DM70 User Manual
  • Download Dewpoint in Compressed Air FAQ
  • Download Monitoring Water Vapour in Lithium-ion Battery Manufacture
  • Download Dewpoint Measurement in SF6 Gas
Enquire about this product
Your Name *
Please call either office for more information: