NRG R1 Pyranometer

DETAILS

The NRG R1 Pyranometer is a highly accurate class A pyranometer, compliant with ISO 9060:2018 standards. The R1 is a thermopile sensor with two concentric domes for optimal insulation from wind and dust, reducing sensitivity to thermal irradiance and protecting spectral sensitivity.  

The NRG R1 is available with digital output via Modbus RTU or analog output for maximum flexibility depending on your solar resource measurement system’s configuration. The sensor is electrically isolated from any mounting surface and features built-in surge protection to improve ESD resistance. 

The R1 is fully supported throughout NRG’s solar product offerings including seamless integration with the LOGR-S Data Logger, SymphoniePRO Data Logger, and mounting support for Flare SRA and SRM Systems. Each NRG R1 Pyranometer comes with an ISO 9060-certified calibration report including sensitivity, directional response, and temperature dependence characterization and validation. 

SPECIFICATION

  ANALOG (#9450) DIGITAL (#9451)
Description
Sensor type Thermopile solar radiation sensor; ISO 9060:2018 Class A (Secondary Standard) compliant Thermopile solar radiation sensor; ISO 9060:2018 Class A (Secondary Standard) compliant
Applications
  • Solar resource assessment and monitoring
  • Meteorological studies
  • Environmental monitoring
 Solar resource assessment and monitoring
  • Meteorological studies
  • Environmental monitoring
Sensor range (0 to 2000) W/m^2 (0 to 2000) W/m^2
Spectral range 283 nm to 2800 nm 283 nm to 2800 nm
Instrument compatibility NRG SymphoniePRO and LOGR-S Data Loggers NRG SymphoniePRO and LOGR-S Data Loggers
Certifications Class A classification per ISO 9060:2018 Class A classification per ISO 9060:2018
Output signal
Signal type Microvolt analog signal proportional to total solar radiation
(sensor specific sensitivity found on calibration report in units μV/Wm-2)		 RS485 Modbus RTU
Sensitivity (6 to 11) uV/(W/m^2) n/a
Accuracy Class A (Secondary Standard) per ISO 9060:2018 Class A (Secondary Standard) per ISO 9060:2018
Calibration n/a Characterization report included with each sensor; traceable to World Radiometric Reference (WRR)
Uncertainty Calibration uncertainty < 2% Calibration uncertainty < 2%
Power requirements
Supply voltage n/a (5 to 30) V DC
Power Required Zero (passive) n/a
Installation
Mounting Mounts to tower using NRG's Mounting Plate | Pyranometer, Gen II (14357)
more mounting options available		 Mounts to tower using NRG's Mounting Plate | Pyranometer, Gen II (14357)
more mounting options available
Tools required
  • Phillips head screwdriver (No. 1)
  • 4 mm hex key
  • 7 mm wrench
  • 8 mm wrench
  • coin for removing desiccant cartridge
  • Phillips head screwdriver (No. 1)
  • 4 mm hex key
  • 7 mm wrench
  • 8 mm wrench
  • coin for removing desiccant cartridge
Environmental
Operating temperature range -40°C to 80°C (-40°F to 176°F) -40°C to 80°C (-40°F to 176°F)
Operating humidity range 0 to 100% 0 to 100%
Physical
Connections 4-pole M12 connector on sensor body
  • Bare wire leads from cable connect directly to logger
  • See also logger user manual for wiring diagram
 5-pole M12 connector on sensor body
  • Bare wire leads from cable connect directly to logger
  • See also logger user manual for wiring diagram
Cable length Sold separately; options include:
  • 5 m (16.4 feet)
  • 10 m (32.8 feet)
  • 20 m (65.6 feet)
  • 30 m (98.4 feet)
  • 50 m (164 feet)
 Sold separately; options include:
  • 5 m (16.4 feet)
  • 10 m (32.8 feet)
  • 20 m (65.6 feet)
  • 30 m (98.4 feet)
  • 50 m (164 feet)
Weight 1.65 lbs. 0.75kg 1.98 lbs. 0.90kg
Dimensions 160 mm diameter x 103 mm high (with feet)
160 mm diameter x 83 mm high (without feet)		 160 mm diameter x 118 mm high (with feet)
160 mm diameter x 106 mm high (without feet)
Materials
Detector Thermopile Thermopile
Enclosure IP67 weatherproof anodized aluminum enclosure and stainless steel hardware IP67 weatherproof anodized aluminum enclosure and stainless steel hardware