INFWIN PYR20-Solar Radiation/Pyranometer Sensor

$ 69.00 USD

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INFWIN P/N PYR20-AAC002

Quantity

SKU:123004243

Out of stock — Available on backorder

The INFWIN PYR20 is a pyranometer (solar radiation sensor) with RS485/Modbus-RTU, analog voltage, or analog current output, measuring global solar irradiance - both direct and diffuse. Internal temperature compensation minimizes the error caused by self-heating of the sensor. Each unit is calibrated against an Eppley Precision Spectral Pyranometer for excellent accuracy and consistency. Range, power supply, output interface, and cable length are configurable via ordering code - the default variant (PYR20-AAC002) ships with a 0–2000 W/m² range, RS485/Modbus-RTU output, 3.9–30V DC supply, and a 2 m cable.

A spring-loaded mounting bracket with a built-in level indicator makes it straightforward to install the sensor level and pointed skyward. Reverse power protection and built-in TVS/ESD protection are included.

Key Features

Reference-calibrated: Each sensor calibrated against an Eppley Precision Spectral Pyranometer for high accuracy and consistency across units
Temperature compensated: Internal compensation minimizes self-heating error
Broad spectral range: 400–1100 nm, covering the solar spectrum relevant to photovoltaic and plant growth applications
Flexible output interface: RS485/Modbus-RTU, RS485 + analog voltage, RS485 + analog current, analog voltage 0–2V, analog current 4–20mA, or SDI-12 (see ordering code)
Level indicator and spring-loaded mount: Simplifies accurate, level installation
Weatherproof: IP66 rated for direct outdoor use
Wide operating range: −40°C to +85°C
Reverse power protection: Built-in TVS/ESD protection
RS485 Modbus-RTU protocol: Standard Modbus register map; configurable slave address, baud rate, parity, and stop bits
Configuration utility: SensorOneSet software included for sensor configuration via RS485
Cable length: 2 m standard; custom lengths available

Applications

Scientific research
Solar power monitoring and photovoltaic system performance
Greenhouse and horticultural light management
Weather stations
LoRaWAN IoT deployments via the Catena-5310 or compatible RS485/Modbus-RTU gateway

Important Notes

Directional error grows off-axis: ±3% of reading from 0–70° incidence, widening to ±10% from 70–85° - mount the sensor level and unshaded for best accuracy.
4–20mA output requires 12–30V DC supply; the 3.9–30V DC and 2.7–16V DC supply options are not compatible with 4–20mA output.
Mounts via three screw holes.

Specifications

Solar Irradiance
Range	0–2000 W/m²
Resolution	1 W/m²
Accuracy	±5%
Spectral range	400–1100 nm
Directional error	±3% of reading (0–70° incidence); ±10% of reading (70–85° incidence)
Output Interface (selectable)
RS485 Modbus-RTU	Default for PYR20-AAC002
Analog voltage	0–2V (output resistance ~0 Ω)
Analog current	4–20mA (load resistor <500 Ω)
SDI-12	Available as ordering option
Power Supply (per output type)
RS485 / Analog voltage	3.9–30V DC (7mA @ 24V DC)
Analog current 4–20mA	12–30V DC (30mA @ 24V DC, with 20mA output signal)
Low-power option	2.7–16V DC (not applicable for 4–20mA output)
Mechanical
Dimensions	75 × 55 × 58 mm
IP rating	IP66
Installation	3 × screw hole mounting, spring-loaded with level indicator
Cable length	2 m standard; custom length available
Environmental
Operating temperature	−40°C to +85°C

Ordering Code Guide

Code 1: Product Series	PYR20	PYR20 pyranometer series
Code 2: Range	A B	2000 W/m² Customize
Code 3: Power Supply	A B	3.9–30V DC 2.7–16V DC
Code 4: Output Interface	A B C D E F G	Analog Voltage 0–2V Analog Current 4–20mA RS485, Modbus-RTU RS485, Modbus-RTU + Analog Voltage 0–2V RS485, Modbus-RTU + Analog Current 4–20mA SDI-12 Customize
Code 5: Cable Length	002 XXX	2 meters Custom (XXX = length in meters, e.g. 005 = 5 m)