280-SP Series Silicon Cell Pyranometers

280-SP

The 280-SP Series Silicon Cell Pyranometers are excellent for applications that do not require the higher accuracy and cost of a thermopile pyranometer. They are less expensive and have faster response times, but have higher errors under cloudy conditions.
The 280-SP pyranometers are sensitive in the 360-1120 nm shortwave radiation range and are calibrated to estimate total shortwave radiation across the entire solar spectrum.
The solar radiation sensors consist of a cast acrylic diffuser, photodiode, and signal processing circuitry potted solid in an anodized aluminum housing.

Features

    Dome shaped sensor head (diffuser and body) facilitates runoff of dew and rain to keep the diffuser clean
    Cosine-corrected for accurate readings even at low zenith levels
    Rugged design for continuous outdoor use in all climates
    Low-power operation and quick response time
    Optional in-line connector (30 cm from sensor head) for
simplified maintenance

Applications

    Agriculture
    Meteorology
    Solar Energy

Spectral range: 360-1120 nm (wavelengths where response is 10 % of maximum)
Cosine response: ± 5% at 75o zenith angle
Calibration Uncertainty: ± 5%
Non-linearity: Less than 1 % up to 2000 W m⁻²
Long-term drift: Less than 2% per year
Operating environment: -40ºC to +70ºC, 0-100% humidity (can be submerged to 30m in water)
Cable: 5 meters (16.4 feet) std. of shielded, twisted-pair wire; additional cable available in multiples of 5 m; TPR jacket (high water resistance, high UV stability, flexibility in cold conditions); pigtail lead wires
Dimensions and weight 28 mm high x 24 mm diameter, Model 280-SP-214 140g, Others 90 g.

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