SR30

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-485

Output

Irradiance in W/m²

Output

Instrument body temperature in °C

Output

Tilt angle in °

Output

Internal humidity in %

Output

Ventilator speed in RPM

Communication Protocol

Modbus over two-wire RS-485

Transmission Mode

RTU