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DST111 Remote Surface Temperature Sensor

DST111 is infrared, non-intrusive sensor for monitoring pavement temperature


    Several measurements combined compactly in one sensor:

    • Remote temperature measurement
    • Unique correction of the error caused by the emissivity of the road surface, negating the need for emissivity adjustment
    • Easy installation and service
    • Low maintenance costs
    • No internal moving parts
    • Stable measurement results even with intense traffic
    • Weather-proof, durable design
    • Reports air temperature and humidity
    • Easy integration with Vaisala ROSA Road Weather Station
    • Capability to act as stand-alone device in remote locations with solar/gsm options
    Technical Specifications

     Technical Specifications


    Power supply 9 ... 30 VDC
    Power consumption 33 mW
    DST111 Isolated RS-485
    DST111R RS-232
    Connector M12 (5 pins)
    DST111 RS-485 and power, male
    DST111R RS-232 and power, male


    Operating temperature -40 ... +60 °C
    Operating humidity 0 ... 100 % RH
    CE Compliant IEC(EN)-61326
    Vibration IEC 60721-3-3


    Measuring distance 2 ... 15 m
    Measuring area Diam. 80 cm at 10 m
    Installation angle from the horizontal line 30 ... 85°

    Measuring range

    Resolution 0.1 °C
    Surface temperature -40 ... +60 °C
    Time constant 1 min
    Data refresh time 30 s


    Dimensions (cm) 32 x 13 x 10
    Weight 1.6 kg

    Related Services
    • 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.
    • 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.
    • 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.