Thermal Sensors Industrial diffusometer: sensor for measurement of diffuse solar radiation The new SRD100 industrial diffusometer is designed to accurately measure diffuse irradiance. When combined with a pyranometer like the SR300-D1, users can separate the direct and diffuse components of solar radiation. SRD100 will typically be part of an IEC 61724-1 Class A PV performance monitoring system. • • • • • • • • no moving parts: utilises a static sensor array and unique shadow mask with a Fibonacci lattice industry-leading accuracy: fully-compliant with IEC61724-1 requirements for Class A monitoring systems digital connectivity: includes remote diagnostics and supports MODBUS communication over an RS-485 interface built-in heating: provides dew and frost mitigation for reliable operation in all climates optimised for PV: delivers high-accuracy measurements, specifically designed for clear-sky and partly cloudy conditions that are most relevant for PV applications can be used as spectrally matched reference device measuring the PV-usable portion of solar radiation rugged surge protection: integrated industrial-grade surge protection ensures durability under extreme PV power plant conditions, with an optional SPD01 Surge Protection Device available to upgrade to 4 kV global support network: backed by our worldwide service organisation for the lowest total cost of ownership Figure 1 SRD100 industrial diffusometer: sensor for measurement of diffuse solar radiation. Designed for PV power plants, with other applications in meteorology and building physics. SRD100: industrial-grade diffuse solar radiation measurement Hukseflux introduces the SRD100 diffusometer, an advanced, all-digital, heated sensor engineered for reliable and accurate measurement of diffuse solar radiation. When paired with a pyranometer, the SRD100 provides a complete picture of solar irradiance, including both the direct and diffuse components for highaccuracy PV performance monitoring. The SRD100 diffusometer is a new instrument, tailored for use in PV monitoring systems, but is also well-suited for other applications such as general meteorological monitoring and building physics. The diffusometer complies with Industrial-grade Immunity, Emission, Electrical, Environmental, and Safety requirements for demanding outdoor and industrial conditions, greatly improving measurement reliability. The SRD100’s extended functionality and diagnostics further enhance ease of operation. Copyright by Hukseflux. Version 2510. We reserve the right to change specifications without prior notice Page 1/6. For Hukseflux Thermal Sensors go to www.hukseflux.com or e-mail us: inf

Thermal Sensors Figure 2 Inside the SRD100 diffusometer: a detailed look at the core components responsible for performance and durability under extreme conditions. How it works: diffuse solar radiation The SRD100 diffusometer features a sensor array and half-sphere shadow mask above the array with a unique Fibonacci lattice hole pattern. All sensors are centrally located under the mask, ensuring that at least one sensor remains in the shade. This shaded sensor is nearhomogeneously exposed only to diffuse sky, giving an accurate estimate of diffuse solar irradiance. Measuring direct solar radiation...

Thermal Sensors SRD100 specifications Measurand Optional measurand Spectral response IEC 61724-1:2021 compliance Figure 3 Typical installation of SRD100, next to a normal Class A pyranometer, such as the SR300-D1. A modern alternative to shadow rings The SRD100 offers a hassle-free alternative to conventional solutions for diffuse radiation measurement, such as a pyranometer with a shadow ring. Unlike shadow rings, the SRD100 does not require manual adjustment every 2-3 days, offering a low-maintenance solution. Instrument diagnostics Heating Calibration certificate Standard cable length Uncertainty...

Thermal Sensors A simpler solution than pyrheliometers and rotating shadow bands Direct and diffuse radiation may also be measured using pyrheliometers, shaded pyranometers, and pyranometers with rotating shadow bands. While these systems are ideal for scientific applications, they can only attain their potentially high levels of accuracy under ideal conditions. For example, pyrheliometers must be kept very clean – more so than pyranometers and daily cleaning is recommended. The diffuse and direct measurement with rotating shadow bands relies on post-processing of data. For example, a correction...

HuksefluxThermal SensorsSee also • Pyranometer selection guide, find the right instrument for your needs • Market leading solar radiation sensors, explore our full selection of solar measurement solutions Figure 6 Optional spring-loaded LM01 levelling mount (one part) and TLM01 tube mount (two parts) for the SRD100. Spring-loaded levelling is a major time-saver during installation. Hukseflux is the leading expert in measurement of energy transfer. We design and manufacture sensors and measuring systems that support the energy transition. We are market leaders in solar radiation and heat flux...

Thermal Sensors SRD100 Industrial diffusometer: sensor for measurement of diffuse solar radiation The new SRD100 industrial diffusometer is designed to accurately measure diffuse irradiance as part of an IEC 61724-1 Class A PV performance monitoring system. When combined with a pyranometer like the SR300-D1, users can separate the direct and diffuse components of solar radiation. The SRD100 is suitable for use in outdoor and industrial environments, and complies with relevant surge immunity and EMC specifications. Customers prefer Hukseflux sensors for their unsurpassed measurement accuracy and...