Skip Ribbon Commands
Skip to main content

DMT143 Miniature Dewpoint Transmitter for OEM Applications

Vaisala DRYCAP® Dewpoint Transmitter DMT143

 Contact Us

Frequently Asked Questions about Compressed Air

Learn More



    The Vaisala DRYCAP® Dewpoint Transmitter DMT143 is a miniature dew point measurement instrument. The transmitter can be installed directly into pressurized systems at 50 bar (725 psia) maximum pressure. 
    • Miniature size dew point transmitter for e.g. small industrial dryer applications
    • Vaisala DRYCAP® technology with auto-calibration
    • Long calibration interval saves maintenance costs 
    • Dew point measurement range -60...+60 °C (-76...+140 °F)
    • Accuracy ±2 ºC (±3.6 ºF)
    • Withstands condensation
    • Fast response time 
    • Compatible with Vaisala DRYCAP® Hand-Held Dewpoint Meter DM70
    • NIST traceable calibration (certificate included)
    • Easy servicing and data transfer via the RS485 user interface
    • LED alarm for exceeded dew point level
    Technical Specifications

     Technical Specifications

    Dew point temperature measurement


    Measurement range (typical)
    Accuracy in air or N2

    -60 ... +60 °C (-76 ... +140 °F) Td
    ±2 °C (±3.6 °F) Td
    Vaisala DRYCAP® 180D

    ppm volume concentration


    Measurement range
    Accuracy at +20 °C (+68 °F),
    1 bar

        10 ... 40000 ppm
        1 ppm + 20 % of reading

    Operating environment


    Measured gases
    Relative humidity

    non-corrosive gases
    -40 ...+60 °C (-40 ... +140 °F)
    0 ... 100 %RH
    0 ... 50 bara(725 psia)


    ​Analog output (scalable) ​4 ... 20 mA (3-wire)
    0 ... 1 V/5 V
    1 ... 5 V

    Digital output

    RS-485, non-isolated
    Vaisala Industrial Protocol




    Material (housing)
    Housing classification

    G-thread version 90g (3.2oz)
    NPT-thread version 100g (3.5oz)
    stainless steel body (AISI316L)
    IP66 (NEMA 4)

    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.