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SL-610-SS Pyrgeometer Downward-Looking

The SL-610 is a downward-looking thermopile pyrgeometer. The sensor incorporates a filter, blackbody thermopile detector, and thermistor with a rugged, self-cleaning sensor housing design. Typical applications include longwave radiation measurement in agricultural, ecological, and hydrological weather networks and renewable energy applications. Sensor includes IP67 marine-grade stainless-steel cable connector 30 cm from head to simplify sensor removal and replacement for maintenance and recalibration.

Specifications

  •  Sensitivity 0.12 mV per W mˉ² (variable from sensor to sensor, typical value listed)
  • Calibration Factor (Reciprocal of Sensitivity) 8.5 W mˉ² per mV (variable from sensor to sensor, typical value listed)
  • Calibration Uncertainty ± 5 %
  • Measurement Range -200 to 200 W mˉ² (net longwave irradiance)
  • Measurement Repeatability Less than 1 %
  • Long-term Drift Less than 2 % change in sensitivity per year
  • Non-linearity Less than 1 %
  • Detector Response Time Less than 0.5 seconds
  • Field of View 150 ˚
  • Spectral Range 5 to 30 µm
  • Temperature Response Less than 5 % from -15 to 45 C
  • Window Heating Offset Less than 10 W mˉ²
  • Zero Offset B Less than 5 W mˉ²
  • Tilt Error Less than 0.5 %
  • Uncertainty in Daily Total ± 5 %
  • Temperature Sensor 30 kΩ thermistor, ± 1 C tolerance at 25 C
  • Output from Thermistor 0 to 2500 mV (typical, other voltages can be used)
  • Input Voltage Requirement for Thermistor 2500 mV excitation (typical, other voltages can be used)
  • Heater 780 Ω, 15.4 mA current draw and 185 mW power requirement at 12 V DC
  • Dimensions 27.5 mm height, 23.5 mm diameter
  • Mass 100 g
  • Warranty 4 years against defects in materials and workmanship

 

Ordering information 

SL-610-SS