SP-230-SS All-Season Heated Pyranometer

The SP-230 (All-season) is a heated pyranometer with a 0.2 W heater to keep water (liquid and frozen) off the sensor and minimize errors caused by dew, frost, rain, or snow blocking the optical path. Sensor includes IP68 marine-grade stainless-steel cable connector 30 cm from the head to simplify sensor removal and replacement for maintenance and recalibration.

Specifications

• ISO 9060:2018: Class C (Fast Response)
• Power Supply: 12V DC for heater
• Current Consumption: 15.4 mA
• Heater: 780 Ω, current consumption 15.4 mA and power consumption 185 mW at 12 VDC
• Sensitivity: 0.2 mV per W mˉ²
• Calibration Factor (Reciprocal of Output): 5 W mˉ² per mV
• Calibration Uncertainty at 1000 W mˉ²: Less than 3%
• Calibrated Output Range: 0 to 400 mV
• Measurement Repeatability: Less than 1%
• Instability: (Long Term Drift) Less than 2% per year
• Non-Linearity: Less than 1% (up to 2000 W mˉ²)
• Response Time: Less than 1 ms
• Field of view: 180˚
• Spectral range: 360 to 1120 nm (wavelengths where the response is 10% of maximum)
• Directional response (cosine): ±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 immersed in water to a depth of 30 m.
• Dimensions: 24 mm diameter, 33 mm height
• Mass (with 5 m cable): 90 g
• Warranty: 4 years against defects in materials and workmanship.