The solar radiation sensor is used to measure shortwave radiation reaching the Earth's surface. (Product does not include the Sensor Mount as shown in photo above).


The SP-series silicon cell pyranometers is calibrated to measure total shortwave radiation. This cosine-corrected sensor is designed to maintain its accuracy when radiation comes from low zenith angles. 


Click to view product datasheet

Solar Radiation Sensor

  • Power Supply 5-24 VDC with a nominal current draw of 300 μA

    SP-212: 2.0 mV per W m-2

    SP-215: 4.0 mV per W m-2

    Calibration Factor

    SP-212: 0.5 W m-2 per mV (reciprocal of sensitivity)

    SP-215: 0.25 W m-2 per mV (reciprocal of sensitivity)

    Calibration Uncertainty ± 5 % 
    Measurement Repeatability < 1 %
    Non-stability (Long-term Drift) < 2 % per year
    Non-linearity < 1 %
    Response Time < 1 ms
    Field of View 180o
    Spectral Range 360 nm to 1120 nm
    Directional (Cosine) Response ± 5 % at 75o zenith angle
    Temperature Response -0.04 ± 0.04 % per C
    Operating Environment

     -40 to 70 C

    0 to 100% relative humidity

    Can be submerged in water up to dephts of 30m

    Dimensions 2.4 cm diameter and 2.8 cm height
    Mass 90 g (with 5 m of lead wire)

    5 m of shielded, twisted-pair wire

    Additional cable available in multiples of 5m

    Santoprene rubber jacket

    Pigtail lead wires

SMT Research Ltd.


#103-1089 East Kent Ave North.

Vancouver, BC, V5X 4V9 Canada

While we often work around the clock, we finish hiking & are back in the office from 8am-5pm PST.

Sales: (778) 373-2070

Service: (204) 480-8579

Toll Free: (855) 209-9677

Field Station: 1527 28th PL SE Puyallup WA, 98374 USA

SMT Research



  • Twitter - Grey Circle
  • LinkedIn - Grey Circle
  • Instagram - Grey Circle
  • Facebook - Grey Circle
  • YouTube - Grey Circle
  • Google+ - Grey Circle