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SR15-A1 Solar Radiation Sensor

Updated:2025-03-13

Brand: Hukseflux
Model：SR15-A1
Description: SR15-A1 is a high-accuracy solar radiation sensor. It is “First Class” according to the ISO 9060:1990 standard and “Spectrally Flat Class B” in the 2018 revision. With its on-board heater, it is compl
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Product Details

SR15-A1 Solar Radiation Sensor Description： User's Manual Datasheet

PV System Performance Monitoring: Compliant with IEC Class B

IEC 61724-1: Photovoltaic System Performance Monitoring – Guidelines for Measurement, Data Exchange and Analysis – requires heating for Class B monitoring. SR15-A1, with its on-board heater, offers Class B compliance without the need for additional accessories.

Improved Measurement Accuracy

Calibration of SR15-A1 pyranometer has been improved; our latest calibration method results in an uncertainty of the sensitivity of 1.8 %, compared to typical uncertainties of higher than 2.8 % for this pyranometer class. SR15-A1’s zero offset a is 5 W/m² unventilated. SR15-A1’s response time is < 10 s, a significant improvement relative to earlier sensors.

Suggested Use

PV system performance monitoring

general solar resource monitoring

indoor simulated solar testing

meteorological networks

Areas of Application

Building physics / insulation, thermal comfort and energy budget measurement

Meteorology / surface energy flux measurement

Solar energy / PV system performance monitoring

SR15-A1 Solar Radiation Sensor Specifications：

Measurand	Hemispherical solar radiation
ISO 9060:2018	Spectrally flat Class B (first class)
IEC 61724-1:2017 compliance	Class B
Application	National Meteorological Networks, PV monitoring commercial and utility scale, PV monitoring small sized, meteorology / climatology, other
Heater	Yes
Output	mV
Calibration uncertainty	< 1.8 % (k = 2)
Calibration traceability	to WRR
Spectral range	285 to 3000 x 10⁻⁹ m
Sensitivity(nominal)	10 x 10⁻⁶ V/(W/m²)
Analog Output	millivolt
Respnse 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
Levelling	optional spring-loaded levelling, with or without tube mount
Version order codes	SR15-A1, SR15-A1-LM01, SR15-A1-TLM01, SR15-A1-S7-8.5
Options	• Adapted sensitivity range • Spring-loaded levelling; practical for easy mounting, levelling and instrument exchange on flat surfaces • Tube levelling mount with set of bolts • With PMF01 pyranometer mounting fixture • Longer cable; 10 and 20 metres length • 20 metres extension cable with 2 connectors