The Irradiance RSR3 Rotating Shadowband Radiometer™ measures sunlight by momentarily shading a silicon photodiode pyranometer with a shadowband and computing global (GHI) and diffuse (DHI) horizontal irradiance and thus inferring direct normal irradiance (DNI). The RSR3 is a fully-integrated device powered by 12v and accessed with the industry-standard MODBUS RTU protocol.

Specifications

SpecificationValueUnit
Physical
Length15Inch
Width4Inch
Height11Inch
Weight3.5Lbs
Electrical
Power Voltage Min11V
Power Voltage Max18V
Power Current Standby10mA
Power Current Peak1000mA
Power Daily Budget500mAh
Cable Length6.5Feet
Communications
CommunicationModbus RTU RS-485
Baud RateDefault 115,200; possible 1200-500,000.bits per second
AddressDefault 1; possible 1-254.
Measurement Uncertainty
GHI Daily Bias2% RMS
GHI RMS Noise10W/m^2 RMS 1m
GHI RMS Noise5W/m^2 RMS 1h
DNI Daily Bias2% RMS
DNI RMS Noise10W/m^2 RMS 1m
DNI RMS Noise5W/m^2 RMS 1h
DHI Daily Bias5% RMS
DHI RMS Noise15W/m^2 RMS 1m
DHI RMS Noise10W/m^2 RMS 1h

Photos


RSR3

Irradiance, Inc. Test Units

Side view

Side view

Equatorial view

Polar view

Zenith view

U-Bolt mounting

Documents

RSR3 User Manual Rev. 20200724

Contact

info@irradiance.com