Class B pyranometer SR15-A1

voltage outputDC outputanalog

Overview
SR15-A1 is a high-accuracy analog Class B pyranometer with an on-board heater for improved data availability and compliance with IEC 61724-1:2021 Class B PV monitoring systems. It provides an analog millivolt output and a spectrally flat Class B response according to ISO 9060:2018.

Key features

• Spectrally flat Class B (ISO 9060:2018)
• First Class pyranometer (ISO 9060:1990)
• On-board heater for high data availability (complies with IEC 61724-1:2021 Class B system)
• Analog millivolt output (mV)
• Spectrally wide sensitivity for solar radiation measurement

Applications

• National meteorological networks
• PV system performance monitoring (commercial, utility and small-size PV)
• Meteorology and climatology
• Indoor simulated solar testing
• Other general solar resource monitoring

Versions / order codes

• SR15-A1
• SR15-A1-LM01
• SR15-A1-TLM01
• SR15-A1-S7-8.5

Technical specifications

• Measurand: hemispherical solar radiation
• ISO 9060:2018 classification: spectrally flat Class B
• ISO 9060:1990 classification: first class pyranometer
• Compliance: IEC 61724-1:2021 Class B system
• Heating: yes (on-board)
• Heater power: 1.5 W at 12 VDC
• Tilt sensor: no
• Calibration uncertainty: < 1.8 % (k = 2)
• Calibration traceability: to WRR
• Spectral range: 285 to 3000 × 10⁻⁹ m
• Sensitivity (nominal): 10 × 10⁻⁶ V/(W/m²)
• Output: analog mV (millivolt)
• Response time: < 10 s
• Zero offset a: 5 W/m² (unventilated)
• Rated operating temperature range: -40 to +80 °C
• Temperature response: < ± 2 % (-10 to +40 °C)
• Standard cable length: 5 m
• Leveling: optional spring-loaded leveling, with or without tube mount