Features:

Output Options

• 0 to 350 mV

• 0 to 2.5 V

• 0 to 5 V

• 4 to 20 mA (For digital options, see SQ-400 series spec sheet)

Stable Measurements

Long-term non-stability determined from multiple replicate pyranometers in accelerated aging tests and field conditions is less than 2 % per year.

Unique Design

An accurate, cosine-corrected patented design shedswater and dirt for a self-cleaning performance. A heated option is available with a 0.2 W heater to minimize errors caused by dew, frost, or snow.

Typical Measurement Applications

• Solar panel arrays

• Agricultural, ecological, and hydrological weather networks

Calibration Traceability

Apogee SP sensors are calibrated through side-by-side comparison to the mean of four Apogee SP-110 transfer standard sensors under high intensity discharge metal halide lamps. The transfer standard sensors are calibrated through side-by-side comparison to the mean of at least two ISO-classified reference pyranometers under sunlight in Logan, UT. Each of four ISO-classified reference sensors are recalibrated on an alternating year schedule at the National Renewable Energy Laboratory (NREL) in Golden, Colorado. NREL reference standards are calibrated to the World Radiometric Reference (WRR) in Davos, Switzerland.

Product Specifications:

Manufacturer: Apogee, USA