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DM70 Hand-Held Dewpoint Meter for Spot-Checking Applications

Portable Dew Point Instrument - Vaisala DRYCAP® Hand-Held Dewpoint Meter DM70

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Frequently Asked Questions about Compressed Air

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    The Vaisala DRYCAP® Hand-Held Dewpoint Meter DM70 measures dew point temperature accurately over a wide measurement range. The probe may be inserted directly into pressurized processes, and it responds rapidly from ambient to process conditions. The sensor withstands condensation and fully recovers from getting wet.
    • Designed for industrial spot checking and field calibration
    • Fast response, enhanced by Sensor Purge function
    • Easy-to-use user interface
    • Data can be logged and transferred to a PC via MI70 Link software
    • Multiprobeoperation; relative humidity and CO2 probes can also be connected
    Watch an instructional video: Spot-Checking Dew Point in Your Compressed Air System with the Vaisala Hand-Held DM70


    Technical Specifications

     Technical Specifications

    Dewpoint measurement


    Measurement range
         probe A
         probe B
         probe C for SF6 gas

    -40 ... +60 °C (-40 ... +140 °F)
    -60 ... +20 °C (-76 ... +68 °F)
    -50 ... +20 °C (-58 ... +68 °F)
    ± 2 °C (± 3.6 °F)
    Vaisala DRYCAP®

    Calculated parameters


    Probe A
    Probes B & C

    Td/f atm, T, ppmv, ppmw, aws, RH, mixing ratio
    Td/f atm, T, ppmv, ppmw

    Operating environment




    -10 ... +60 °C (+14 ... +140 °F), process temperature
    up to +200 °C (+328 °F) using DSS70A Sampling System
    0 ... 20 bar (0 ... 290 psig)

    Inputs and outputs


    Power consumption

    Analog output
    Menu languages

    Rechargeable NiMH battery pack with AC power or 4 x AA alkaline batteries, type IEC LR6
    0 ... 1 VDC
    English, French, German, Spanish, Swedish, Finnish, Russian, Japanese, Chinese

    For complete specifications, please see the brochure or user guide in "Documents".

    Related Services
    • Repair Services 
    • Vaisala repair services include fault tracing and repair or replacement of failed components, as well as final testing to ensure your equipment is functioning properly. Repairs can be carried out on site or at one of our service centers.
    • Spare Parts 
    • Get rapid access to the spare parts you need to maximize the uptime of your equipment and ensure reliable and accurate operation. In addition to standard spare part delivery, we also offer an express service where parts are shipped within one business day.
    • Service Center Calibration 
    • Regular calibration ensures that your Vaisala equipment continues to provide accurate, high-quality data. We offer traceable, standards-compliant calibration services for almost all Vaisala products and partner with world-class couriers for rapid, trouble-free return of your equipment.
    • Warranty 
    • All Vaisala products and services are covered by a 12-month warranty as standard, with selected products covered for up to 24 months. During this period you benefit from free repair or replacement of faulty equipment. With Vaisala’s extended warranty, you get free repair or replacement for five years.