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DMT152 Dewpoint Transmitter for Low Dew Point Measurement in OEM Applications

Dewpoint Analyzer - DMT152 Vaisala DRYCAP® Dewpoint Transmitter DMT152

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    The Vaisala DRYCAP® Dewpoint Transmitter DMT152 is designed for measuring low dew point in OEM applications, even down to -80°C.
    • Compact and accurate
    • Vaisala DRYCAP® technology with a polymer sensor
    • Measures dew point down to -80°C (-112 °F)
    • Reduced maintenance costs due to long calibration interval
    • Fast response time
    • Withstands condensation
    • NIST traceable
    • Compatible with the Vaisala MI70 indicator
    • Optional loop powered display, Nokeval 301
    Technical Specifications

     Technical Specifications

    Dew point temperature measurement


    Measurement range

    -80...-10 °C (-112...+14 °F) Td

    -80 ... -30 °C (-112 ... -22 °F)
    -30 ... -10 °C (-22 ... +14 °F)

    ± 2 °C (3.6 °F) Td
    ± 3 °C (5.4 °F) Td
    ​Sensor​Vaisala DRYCAP® 180U

    ppmvolume concentration measurement


    Measurement range (typical)

    0 ... 500 ppm

    ​Accuracy at +20 °C (+68 °F), 1013 mbar​±(0.2 ppm + 20 % of reading)

    Operating environment

    ​Temperature​-40...+70 °C (-40...+158 °F)
    ​Relative humidity​0 ... 100 %RH
    (up to +20 °C / +68 °F)
    ​Pressure​0 ... 50 bar (725 psia)
    ​Measured gases​non-corrosive gases


    Sample flow rate

    no effect on measurement accuracy

    Inputs and outputs

    ​Two analog outputs (scalable)
    ​4...20 mA, 0…20 mA (3-wire),
    0 ... 5 V, 0 … 10 V
    ​Digital output​RS485 (2-wire)
    ​On/Off output is available (instead of the 2nd analog output) ​


    Operating voltage with
         RS485 output
         voltage output
         current output

    11 …28 VDC
    15 ... 28 VDC
    21 ... 28 VDC



    Housing material (wetted parts)


    ​Housing classification​IP65 (NEMA 4)
    ​Stainless steel mesh filter
    ​Filter body AISI303, mesh
    AISI316L, grade, 18 µm
    ​Mechanical connections
    option 1
    option 2
    option 3
    Weight (ISO G1/2")

    ​ISO G1/2"
    UNF 3/4" -16
    190 g (6.70 oz)

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

    Related Services
    • 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.
    • 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.
    • 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.
    • 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.