SR30
SR30
OrderableClass A Pyranometer with RS-485 Modbus Communications with Integrated Heating and Ventilation
Overview
The SR30, an ISO 9060:2018 spectrally flat Class A (secondary standard) pyranometer manufactured by Hukseflux, features Recirculating Ventilation and Heating (RVH™) technology. As a standalone unit, the SR30 is fully compliant with IEC 61724-1 standards, whereas other pyranometers would require external ventilation/heating units to be compliant. The SR30 is an ideal instrument for solar resource and PV performance monitoring.
Benefits
- Heated for high data availability, featuring RVH™ technology
- Compliant with IEC 61724-1:2021 Class A
- Remote sensor diagnostics
Specifications
- Sensor
- High-quality blackened thermopile protected by two glass domes with integrated heater and ventilation
- Measurement Description
- Monitors solar radiation for the full solar spectrum range
Hemispherical Solar Radiation
- Heater
- RVH™
(Recirculating Ventilation and Heating)
- ISO Classification
- Spectrally flat Class A (secondary standard)
ISO 9060:2018
- IEC 61724-1:2021 Compliance
- Class A
- Calibration Uncertainty
- < 1.2%
(k = 2)
- Heating
- Included
- Ventilation
- Included
- Technology Employed
- Recirculating Ventilation and Heating
(RVH™)
- Standard Operating Mode
- Heated and ventilated
- Power Consumption @ 12 Vdc
- < 2.3 W
- Zero Offset A
- < 2 W/m2
- Calibration Traceability
- To WRR
- Calibration Registers
- Accessible to users
- Spectral Range
- 285 to 3000 x 10-9 m
- Sensitivity
- Digital output
- Operating Temperature Range
- -40 to +80°C
(rated)
- Temperature Response
- < ±0.4%
(-30 to +50°C)
- Temperature Response Test of Individual Instrument
- Report included
- Directional Response Test of Individual Instrument
- Report included
- Rated Operating Voltage Range
- 8 to 30 Vdc
Sensor Tilt Angle
- Tilt Measurement Uncertainty
- ±1°
(0 to 90°)
- Tilt Sensor Test of Individual Instrument
- Report included
Operation in Low-Power Mode
- Operating Condition
- Heater and ventilator [OFF]
- Zero Offset A
- 5 W/m2
(unventilated)
- Power Consumption @ 12 Vdc
- < 0.1 W
Digital Output
- Output
- Modbus RS-485Irradiance in W/m2Instrument body temperature in °CTilt angle in °Internal humidity in %Ventilator speed in RPM
- Communication Protocol
- Modbus over two-wire RS-485
- Transmission Mode
- RTU
Accessories
(11)RS485CBL
Five-Conductor Cable with M12 Five-Pin A-Coded Connector
OrderableCM256
Adjustable Plane and Angle Solar Mounting Stand
OrderableCM261
Single-Axis Tracker Mounting Stand
Orderable33973
RS-485 to USB Converter
OrderableCM275
Albedometer Mounting Kit
Orderable39131
DIN Rail Terminal Kit with 2 Terminals and 6 Wires
Orderable39643
RS-485 DIN Rail Terminal Bus Kit without Mounting Bracket
OrderableCM266
Unistrut Mount
OrderableCM268
PV Module Mount
OrderableCM410
Pile Mount Arm (no finish)
OrderableCM410-BF
Pile Mount Arm (matte black finish)
Orderable
Related Resources
Documents
- Technical Paper
Modbus Troubleshooting Guide
April 2026
View Document - Brochure
SR30 Class A Pyranometer
March 2026
View Document - Manual
SR30 ISO Spectrally Flat Class A (Secondary Standard) Pyranometer
February 2026
View Document - Compliance
SR30-L EU Declaration of Conformity
January 2017
View Document
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