Thermal Sensors Digital Class A albedometer with heating and and tilt sensor SRA30-D1 digital spectrally flat Class A albedometer is an instrument that measures global and reflected solar radiation and the solar albedo, or solar reflectance. SRA30-M2-D1 is the most accurate albedometer available. It is heated for the best data availability. It is composed of one AMF03 albedometer mounting kit and two SR30-M2-D1 spectrally flat Class A pyranometers. This pyranometer is compliant in its standard configuration with the requirements for Class A PV monitoring systems of the IEC 61724-1 standard. Each pyranometer has a thermopile sensor, the upfacing one measuring global solar radiation, the downfacing one measuring reflected solar radiation. AMF03 includes one glare screen, one mounting fixture with rod, mounting hardware and tools. SRA30 complies with the latest ISO and WMO standards. The modular design facilitates maintenance and calibration. Albedo and Albedometers Albedo, also called solar reflectance, is defined as the ratio of the reflected to the global radiation. The solar albedo depends on the directional distribution of incoming radiation and on surface properties at ground level. Albedos of typical surfaces range from about 4 % for fresh asphalt, and 15 % for green grass to 90 % for fresh snow. An albedometer is an instrument composed of two pyranometers, the upfacing one measuring global solar radiation, the downfacing one measuring reflected solar radiation. You can then derive the solar albedo, or solar reflectance and net solar radiation. The best albedometer for the PV industry SRA30-M2-D1 is the most accurate albedometer available. Its benefits: • “spectrally flat” pyranometers, essential for albedo measurement • heating included, complying with IEC 61724-1 Class A system requirements • digital outputs: easy implementation & servicing • best-in-class temperature response <± 0.4 % (-30 to +50 °C), best “zero offset a” and best calibration uncertainty • test certificates for temperature- and directional response included as required by ISO 9060 • modular; calibrated as separate pyranometers SRA30-M2-D1 consists of two identical pyranometers model SR30-M2-D1, one facing up, one facing down. To create an SRA30-M2-D1, the two sensors are combined with one AMF03 albedometer mounting kit. AMF03 includes a fixture with rod for mounting purposes and a glare screen. The user assembles these modular components into an SRA30 albedometer. The modular design of SRA30 facilitates maintenance and calibration. Using the SRA30 albedometer is easy. The instrument is composed of two SR30 spectrally flat Class A pyranometers. The irradiance in W/m2 is transmitted via the Modbus protocol over 2-wire RS-485. The working principle and specifications of the pyranometers can be found in the SR30-M2-D1 user manual. SRA30 can be connected directly to commonly used datalogging systems. Copyright by Hukseflux. Version 2304. We reserve the right to change specifications without prior notice Page 1/3. For Hukseflux Thermal Sensors go to www.hukseflux.com or e-mail us:

Thermal Sensors Suggested use • PV monitoring with bifacial solar modules • high-accuracy meteorological observations extreme climates (tropical / polar) Spectrally flat For the reflected solar radiation measurement, it is essential to employ spectrally flat pyranometers; the reflected solar radiation has a different spectrum compared to the global solar radiation. SRA30 has spectrally flat sensors on board, they can measure global and relected solar radiation using the same instrument with the same calibration. Heated for high data availability High data availability is attained by heating of...

Thermal Sensors low power consumption: SR30-M2-D1 requires less than 3 W, compared to 10 W for traditional ventilation systems low maintenance: SR30 does not require filter cleaning or replacement The dome of the SR30 pyranometer is heated by ventilating the area between the inner and outer dome. RVH TM is much more efficient than traditional ventilation, where most of the heat is carried away with the ventilation air. Recirculating ventilation is as effective in suppressing dew and frost deposition at less than 3 W as traditional ventilation is at 10 W. RVH TM technology keeps domes and sensor...