Precision Solar Irradiance Measurement for Industrial & Environmental Monitoring
The Polwax PLXSRT300 Solar Radiation Transmitter is a high-accuracy pyranometer-based sensor designed for continuous measurement of global solar radiation (W/m²). Engineered with a full-spectrum photoelectric sensing element, it delivers stable, repeatable solar irradiance data across a 180° hemispherical field of view, even in harsh outdoor conditions
Solar Radiation Transmitter
PLXSRT300
- High-precision photosensitive element with full-spectrum absorption
- 180° hemispherical measurement for accurate global solar radiation
- High-transmittance dust cover with anti-dust surface treatment
- Built-in leveling bubble with mechanical adjustment for easy installation
- Multiple output options: RS485 / 4-20 mA / Voltage
- Rugged design suitable for outdoor and industrial environments
The Polwax PLXSRT300 Solar Radiation Transmitter is a precision-engineered pyranometer designed for continuous and accurate measurement of global solar radiation across a full 180° hemispherical field of view. Built with a high-accuracy photoelectric sensing element and a wide spectral response, the PLXSRT300 delivers stable and reliable solar irradiance data under varying environmental and climatic conditions.
For long-term outdoor performance, the sensor features a high-transparency protective dome with anti-dust surface treatment, ensuring minimal environmental interference while maintaining excellent light transmission. Its rugged industrial-grade housing, combined with a built-in leveling bubble and mechanical adjustment mechanism, enables quick, precise, and hassle-free installation in outdoor and industrial environments.
Product Overview
The Polwax PLXSRT300 Solar Radiation Transmitter is a precision-engineered pyranometer designed for continuous and accurate measurement of global solar radiation (W/m²) across a full 180° hemispherical field of view. Developed for demanding outdoor and industrial environments, the PLXSRT300 uses a high-accuracy photoelectric sensing element with wide spectral response, ensuring stable, repeatable, and reliable solar irradiance data under varying climatic and environmental conditions.
To support long-term outdoor operation, the transmitter is equipped with a high-transparency protective dome featuring anti-dust surface treatment. This advanced design minimizes environmental interference such as dust, moisture, and airborne particles while maintaining excellent light transmission for consistent measurement accuracy. The sensor’s industrial-grade aluminum alloy housing provides superior durability and resistance to harsh weather conditions, making it suitable for permanent outdoor installations.
The PLXSRT300 is designed for easy and precise installation. A built-in leveling bubble with mechanical adjustment allows accurate horizontal alignment, which is critical for correct global radiation measurement. The transmitter supports pole or flat surface mounting, enabling flexible deployment across solar plants, weather stations, and industrial facilities.
For seamless system integration, the PLXSRT300 offers multiple output options, including RS485 (Modbus RTU), 4–20 mA, 0–5 V, and 0–10 V, making it compatible with SCADA systems, data loggers, PLCs, and building management systems. With fast response time, low power consumption, and excellent long-term stability, the transmitter ensures dependable real-time monitoring and data acquisition. The Polwax PLXSRT300 is ideal for a wide range of applications such as solar power plant performance monitoring, renewable energy assessment, smart agriculture and greenhouse automation, weather and environmental monitoring stations, and building energy management systems.
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Technical Data
Measurement Parameter
Solar Radiation (Global Radiation)
Measurement Range
0 to 1800 W/m²
Temperature
–40 °C to +120 °C
Resolution
1 W/m²
Accuracy / Non-linearity
±3%
Response Time
≤ 10 seconds
Annual Stability
≤ ±2%
Spectral Response
Full spectrum (wide-band absorption)
Field of View
180°
Power Supply
DC 7–30 V (Analog) / DC 9–30 V (Rs485)
Power Consumption
≤ 0.6 W (RS485), ≤ 0.06 W (Analog)
Output Signals
Rs485 (Modbus RTU), 4-20 mA, 0-5 V, 0-10 V
Communication Protocol
Modbus RTU (Rs485)
Operating Temperature
–25 °C to +60 °C
Operating Humidity
0–95% RH (non-condensing)
Protection
Weather-resistant housing for outdoor use
Mounting
Pole / Flat surface mounting
Level Adjustment
Built-in leveling bubble with thumb screw
Housing Material
Industrial-grade aluminum alloy
Features
Solar Power Plant Monitoring
Installed across a utility-scale solar PV plant, the PLXSRT300 enabled accurate real-time irradiance data integration with SCADA systems, improving performance ratio analysis, fault detection.
Smart Agriculture & Greenhouses
Used in commercial greenhouses to automate shading and irrigation via 4–20 mA output, resulting in improved crop health, reduced energy use, and enhanced environmental control accuracy
Environmental & climate research
Accurate measurement of solar radiation is critical in environmental monitoring and climate research for understanding atmospheric behavior, energy balance, and long-term climate patterns.
Applications
Smart Agriculture & Greenhouse
In smart agriculture and greenhouse environments, the PLXSRT300 enables real-time monitoring of solar radiation to optimize shading control, irrigation cycles, and climate regulation. Accurate irradiance data helps improve crop health, reduce energy and water consumption, and enhance overall environmental.
Environmental & Climate Research
For environmental and climate research applications, the PLXSRT300 supports precise measurement of solar irradiance required for climate modeling, atmospheric studies, and long-term environmental monitoring. Its stability and accuracy make it ideal for research institutions and monitoring networks.
Weather Monitoring Stations
Solar Power Plant Performance Monitoring
The Polwax PLXSRT300 provides accurate real-time solar irradiance data essential for evaluating solar panel efficiency, energy yield, and performance ratio (PR). By integrating with SCADA systems, it enables reliable correlation between solar input and power output, supporting fault detection.
Renewable Energy & PV System Analysis
For renewable energy applications, the PLXSRT300 delivers stable and precise global solar radiation measurements that support PV system design, performance analysis, and long-term energy forecasting. Its high accuracy and wide spectral response help improve system efficiency.
Building Energy Management Systems
In Building Energy Management Systems (BEMS), the PLXSRT300 supplies real-time solar radiation data to optimize HVAC control, shading systems, and energy usage. Seamless integration with BMS and automation platforms helps reduce energy consumption, improve occupant comfort.