SR05-L ISO 9060 Second Class Pyranometer with Analog and RS-485 Modbus Communications

Overview

The SR05-L, manufactured by Hukseflux Thermal Sensors as the SR05-D1A3, is an ISO 9060:2018 spectrally flat Class C (second class) pyranometer designed for general solar radiation measurements in agricultural and meteorological networks and PV monitoring. Both analog output and Modbus over RS-485 are supported.

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Benefits and Features

  • Industry-standard analog and digital outputs for easy implementation and servicing
  • Affordable second class pyranometer, suitable for large networks
  • Employs a thermopile sensor with black-coated surface, one dome, and an anodized aluminum body with visible bubble level

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Detailed Description

The SR05 measures solar radiation received by a plane surface, in W/m², from a 180° field of view angle with a high-quality blackened thermopile protected by a glass dome. The blackened thermopile provides a flat spectral response for the full solar spectrum range, which allows the SR05 to be used under plant canopies or lamps, when the sky is cloudy, and for reflected radiation measurements.

The SR05 produces two different outputs that are measured directly by a Campbell Scientific data logger: a 0 to 1000 mV signal and a Modbus over RS-485 signal.

Specifications

Sensor Blackened thermopile protected by a dome
Measurement Description Measures hemispherical solar radiation
Heater No
ISO Classification Spectrally flat Class C (second class) ISO 9060:2018
IEC 61724-1:2017 Compliance Class C
Digital Output Modbus over two-wire RS-485
Voltage Output 0 to 1 V
Analog Output 0 to 1600 W/m2
Calibration Uncertainty < 1.8% (k = 2)
Calibration Traceability To WRR
Spectral Range 285 to 3000 x 10-9 m
Operating Temperature Range -40° to +80°C
Rated Operating Voltage Range 5 to 30 Vdc
Communication Protocol Modbus over RS-485
Transmit Range 0 to 1600 W/m2
Power Consumption (Digital) < 75 x 10-3 W (at 12 Vdc)

Compatibility

Note: The following shows notable compatibility information. It is not a comprehensive list of all compatible or incompatible products.

Data Loggers

Product Compatible Note
CR1000X
CR300
CR310
CR350
CR6
MeteoPV

Downloads

SR05 Example Programs v.1 (2 KB) 10-09-2021

Two CR1000X data logger programs that read the SR05 sensor. An example program is included for each output option (digital Modbus, analog). Although these programs are written for a CR1000X data logger, program code for other data loggers will be similar.

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Common Accessory for the following products:
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