:: Product Information

SP-510 Upward-looking Thermopile Pyranometer

Apogee


Product Description

The SP-510 is an upward-looking thermopile pyranometer with an analog output of 0 to 114 mv. The sensor incorporates a blackbody thermopile detector and acrylic diffuser with a rugged, self-cleaning sensor housing design. Typical applications include shortwave radiation measurement in agricultural, ecological, and hydrological weather networks. Sensors are also used to optimize photovoltaic systems.



Specifications

Sensitivity (variable from sensor to sensor, typical values listed)

0.057 mV per W m-2

Calibration Factor (reciprocal of sensitivity) (variable from sensor to sensor, typical values listed)

17.5 W m-2 per mV

Calibration Uncertainty ± 5 %

Output Range 0 to 114 mV

Measurement Range

0 to 2000 W m-2 (net shortwave irradiance)

Measurement Repeatability

Less than 1 %

Long-term Drift

Less than 2 % per year

Non-linearity

Less than 1 %

Detector Response Time

0.5 seconds

Field of View

180°

Spectral Range (50 % points)

385 nm to 2105 nm

Directional (Cosine) Response

Less than 30 W m-2 at 80° solar zenith

Temperature Response

Less than 5 % from -15 to 45 C

Zero Offset A

Less than 5 W m-2; Less than 10 W m (heated)

Zero Offset B

Less than 5 W m-2

Uncertainty in Daily Total

Less than 5 %

Operating Environment -50 to 50 C, 0 to 100 % relative humidity

Heater 780 Ω, 15.4 mA current drain and 185 mW power requirement at 12 V DC

Dimensions 28.7 mm height, 23.5 mm diameter

Mass 90 g


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