Dew Point and Temperature Meter Series DMT340

Note that the DMT340 series is being discontinued. It is replaced by Indigo family products. Do not specify DMT340 for new projects, instead view Indigo transmitters and probes that are also designed for use in demanding applications.

Condensation-resistant DMT340 is designed for industrial low-humidity applications such as industrial dryingcompressed air systemssemiconductor industry, dry rooms, baking ovens, and metal heat treatment to provide accurate and reliable measurement.


  • Vaisala DRYCAP® sensor provides accurate, reliable measurement with excellent long-term stability and fast response time
  • Condensation-resistant
  • Unique auto-calibration feature
  • Graphical display and keypad for convenient operation
  • Optional alarm relays and mains power supply module
  • Integrated data logging with over four years of measurement history
  • Traceable calibration (certificate included)

Looking for DMT340 performance with interchangeable probes and a transmitter supporting two probes? View Indigo family.

There are several models for different types of needs:

  • DMT341 for wall-mounting, see also DMP7
  • DMT344 for pressurized processes, see also DMP8
  • DMT347 with small pressure-tight probe, see also DMP7
  • DMT348 for pressurized pipelines, see also DMP8

DMT340 is compatible with the Vaisala DRYCAP® Handheld Dew Point Meter DM70.

Key benefits

Choose the probe suitable for your needs

Five different probe types designed to meet various requirements.

Easy maintenance

The Vaisala DRYCAP® sensor is immune to particulate contamination, water condensation, oil vapor, and most chemicals.

Stable measurement

The auto-calibration feature allows the transmitter to perform calibration and adjustment by itself while the measured process is running.

Product Resources