SR30-M2-D1 Pyranometer

Heated for high data availability, with RVH™ technology
High data availability is achieved by heating the outer dome via ventilation between the inner and outer dome. RVH™ (Recirculating Ventilation and Heating) technology, developed by Hukseflux, suppresses dew and frost deposition and is as effective as traditional ventilation systems, without the maintenance hassles and large footprint required.

The SR30 pyranometer dome is heated by ventilating the area between the inner and outer dome. RVH™ technology is much more efficient than traditional ventilation, where most of the heat is removed with the ventilation air. Recirculating ventilation is as effective at suppressing dew and frost deposition at less than 3 W as traditional ventilation at 10 W. RVH™ technology also leads to a reduction in zero offsets.

IEC 61724-1:2021 Class A Compliant
The SR30 is the first pyranometer to meet the requirements of IEC 61724-1:2021 Class A in its standard configuration. The SR30 meets, without the need for additional accessories, the IEC requirements. Heating is included for dew and frost mitigation. The instrument has 2 heating modes: normal at < 3 W and medium at < 0.65 W power.

Remote Sensor Diagnostics
In addition to solar irradiance, the SR30 outputs sensor diagnostics such as:

• Tilt Angle
• Internal Fan Speed ​​(RPM)
• Internal Humidity
• Heater Current

Remote diagnostics allow for real-time status monitoring, reducing the need for (un)scheduled field inspections.

Tilt Angle Measurement Included
The SR30 includes a tilt sensor. This is very practical for remote checks of the instrument status or for monitoring photovoltaic systems with solar trackers. The sensor measures with high accuracy, with a margin of error of 1 ˚, and is tested and temperature compensated between -30 and +50 ˚C. The SR30-M2-D1 offers improved electronics over its predecessor, the SR30-D1.

Spectrally flat, as required for meteorology and photovoltaic monitoring
The new ISO 9060:2018 version defines pyranometer classes A, B and C. The standard also adds a new subclass, called "spectrally flat". The vast majority of users need to use instruments from the spectrally flat subclass; only spectrally flat instruments measure with high accuracy, even when a cloud obscures the sun or when irradiance includes reflected radiation. These situations occur, for example, when measuring global horizontal irradiance (GHI) under partially or fully cloudy skies, when measuring plane of array (POA), albedo or net radiation. Normal instruments, only class A, B or C, and not spectrally flat, only measure accurately under clear and sunny skies.

New Sensor Manager software
Hukseflux's Sensor Manager software provides a user interface for communication between a PC and Hukseflux digital pyranometers and pyrheliometers with a Modbus interface. The software allows the user to locate, configure and test one or more sensors and perform simple measurements using a PC. The Sensor Manager software can be downloaded at: https://www.hukseflux.com/downloads. The new v2021 version of Sensor Manager replaces previous versions such as v1817 and v1920 beta. Always use the latest version of the software. Need help using the v2021 software? Please refer to the Sensor Manager user manual, which is included separately.