The Apogee SP-212 is an accurate, reliable, and durable pyranometer featuring a silicon-cell photodiode with excellent cosine response and measures total solar radiation to within ±5%. The SP-212 is fully potted with a domed-shaped head making the sensor fully weatherproof, self- cleaning, and impervious to thermal based accuracy fluctuations. Each SP-212 pyranometer is carefully pre-calibrated in controlled conditions and traceable to ISO class reference standards so the sensor is ready to go right out of the box.
- 4-year warranty
- Comes with Apogee level plate (AL-100) and mounting bracket (AM-110) for easy setup and installation.
Technical Specifications
| Sensitivity | 2.0 mV per W m-2 |
| Calibration Factor | 0.5 W m-2 per mV |
| Accuracy | ± 5% |
| Measurement Repeatability | < 1% |
| Non-stability (Long-term Drift) | < 2% per year |
| Non-linearity | < 1% (up to 1750 W m-2) |
| Response Time | < 1 ms |
| Field of View | 180º |
| Power Supply | 5-24 VDC with a nominal current draw of 300 μA |
| Spectral Range | 360 nm to 1120 nm |
| Directional (Cosine) Response | ± 5% at 75º zenith angle |
| Temperature Response | -0.04 ± 0.04% per ºC |
| Operating Temperature | -40 ºC to 70 ºC |
| Operating Humidity | 0 to 100 % relative humidity |
| Weather resistance | Can be submerged in water up to depths of 30 m |
| Dimensions | 2.40 cm Ø x 2.75 cm H |
| Weight | 90 g (with 5 m of lead wire) |
| Cable | 5 m of shielded, twisted-pair wire Santoprene rubber jacket (high water resistance, high UV stability, flexibility in cold conditions) Pigtail lead wires |
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