The SP-214 is an amplified, analog sensor with a 4 to 20 mA output. The sensor incorporates a silicon-cell photodiode 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. Sensor includes IP68 marine-grade stainless-steel cable connector 30 cm from head to simplify sensor removal and replacement for maintenance and recalibration.
Google's Project Loon
Apogee's SP-230 heated pyranometer was selected to monitor PV panels on Project Loon.
Monitoring PV Panels on Jin Jeop Library
SP-110's are integrated as part of a PV monitoring sytem for a PV power generation facility on the roof of the Jin Jeop library in Korea.
Solar Power Plants on Lakes and Dams
Studying solar radiation at different angles to determine locations for solar power plants.
Pyranometer mounted on model train to collect measurements in orchard for irrigation study.
Power Supply 7 to 24 V DC, maximum current draw of 22 mA (2 mA quiescent current draw) Sensitivity 0.008 mA per W mˉ² Calibration Factor 125 W mˉ² per mA (reciprocal of sensitivity) with an offset of 4 mA Calibration Uncertainty ± 5 % Calibrated Output Range 4 to 20 mA Measurement Repeatability Less than 1 % Non-stability (Long-term Drift) Less than 2 % per year Non-linearity Less than 1 % (up to 2000 W mˉ², maximum radiation measurement is 2000 W mˉ²) Response Time Less than 1 ms Field of View 180˚ Spectral Range 360 to 1120 nm (wavelengths where response is 10 % of maximum) Directional (Cosine) Response ± 5 % at 75˚ 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 depths of 30 m Dimensions 24 mm diameter, 33 mm height Cable 5 m of shielded, twisted-pair wire with TPR jacket (high water resistance, high UV stability, flexibility in cold conditions), additional cable available Mass 140 g (with 5 m of lead wire) Warranty 4 years against defects in materials and workmanship