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SR15-D1 Digital First Class Pyranometer

Updated:2025-03-13

Brand: Hukseflux
Model：SR15-D1
Description: SR15 digital pyranometer series is a range of high-accuracy digital solar radiation sensors. It is “first class” according to the WMO guide and ISO 9060:1990 standard and “Spectrally Flat Class B” in
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Product Details

SR15-D1 Digital First Class Pyranometer： 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-D1, with its on-board heater, offers Class B compliance without the need for additional accessories.

SR15 Digital Series Design

SR15 first class pyranometer employs a thermal sensor with black coating, two glass domes and an anodized aluminium body. The digital sensor offers output via Modbus RTU over 2-wire RS-485 (version SR15-D1) and via Modbus TTL and 4-20 mA current loop (version SR15-D2A2).

Suggested Use

PV system performance monitoring

General solar resource monitoring

Indoor simulated solar testing

Meteorological networks

Areas of Application

Meteorology / surface energy flux measurement

Solar energy / PV system performance monitoring

SR15-D1 Digital First Class Pyranometer Specifications：

Measurand	Hemispherical solar radiation
ISO 9060:2018 classification	spectrally flat Class B (first class)
IEC 61724-1:2017 compliance	Class B
Application	National Meteorological NetworksPV monitoring commercial and utility scale, PV monitoring small sized, meteorology / climatology, other
Calibration uncertainty	< 1.8 % (k = 2)
Calibration traceability	to WRR
Spectral range	285 to 3000 x 10⁻⁹ m
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)
Heater	1.5 W at 12 VDC
Standard cable length	5 m
Levelling	optional spring-loaded levelling, with / without tube mount
Communication protocol	Modbus over 2-wire RS-485
Transmission mode	RTU
Output	irradiance in W/m² and instrument body temperature in °C
On-board heater	included
Version order codes	SR15-D1, SR15-D1-LM01, SR15-TLM01
Options	• Spring-loaded levelling; practical for easy mounting, levelling and instrument exchange on flat surfaces (LM01) • Tube levelling mount with set of bolts (TLM01) • PMF01 bracket for tilted installations • Longer cable; 10 and 20 metres length • 20 metres extension cable with 2 connectors