Indepths
Details
Advanced Sensor Technology
At the heart of the PYR1-485 lies a thermopile sensor, capable of measuring solar radiation across a broad spectral range of 300 to 2900 nm. This wide spectrum coverage ensures comprehensive solar radiation measurement, capturing both visible and near-infrared wavelengths with high precision.
Sophisticated Digital Architecture
The PYR1-485 is equipped with an advanced electronics board featuring a microcontroller that manages:
- Sampling and averaging of measurements
- Temperature reading
- RS485 transmissions
This digital architecture provides:
- Exceptional noise immunity
- Consistent behavior over time and temperature variations
- Modbus RTU output over RS485, allowing for reliable signal transmission up to 500 meters
Innovative “Virtual Bubble Level”
Since 2022, the PYR1-485 has incorporated a high-precision inclinometer (14-bit resolution for X and Y inclinations), enabling a “virtual bubble level” feature. This can be accessed through the Allconfig program, allowing users to ensure perfect horizontal positioning. The inclinometer registers are published, enabling remote monitoring of the instrument’s orientation.

Robust Design for Outdoor Durability
Engineered for long-term outdoor deployment, the PYR1-485 features:
- A double dome design with hemispherical optical glass, ensuring high transparency and protection
- An anodized aluminum body that withstands harsh environmental conditions
- Enhanced weather resistance for reliable operation in diverse climates
Precision Calibration and Quality Assurance
Each PYR1-485 undergoes rigorous calibration against a Secondary Standard (Class A Thermopile Pyranometer), which is rechecked every 12 months. This meticulous calibration process, compliant with ISO 9847 standards, ensures the highest level of measurement accuracy and traceability.
Optional Accessories
- Bracket for Plane of Array installation can be used also for Albedo mounting kit (available upon request)
- Bracket for pole installation
Thermopile Pyranometer Comparison Table

Specifications
- Product Name: PYR1-485
- Classification: ISO 9060:2018 Class B (First Class) Thermopile Pyranometer
- Reference Standards: ISO 9060:1990, ISO 9060:2018
- Output: Modbus RTU on RS485
- Calibration: ISO 9847 compliant, using Secondary Standard (Class A) Pyranometer
- Spectral Sensitivity: 300-2900 nm
- Measurement Range: 0-1600 W/m²
- Response Time: < 20 seconds
- Resolution:
- Irradiance: ± 1 W/m²
- Inclination: 0.1°
- Working Temperature: -40°C to +80°C
- Field of View: 180°
- Stability: < ± 1% (over 1 year)
- Modbus Addresses:
- Irradiance: 257
- Pyranometer Temperature: 34817
- Inclination X-axis: 259
- Inclination Y-axis: 260
- Power Supply: 9-30 VDC (protected against short circuit)
- Encapsulation:
- Dome: Quartz [k5] (0.3μm - 3μm)
- Body: Anodized Aluminum
- Connector: Standard female M8 4-pin
- Dimensions: Φ162 x 104mm (height)
Compatibility
Our devices are engineered with high precision and reliability, designed to seamlessly integrate with a wide range of photovoltaic systems and installations. We recommend consulting the compatibility table to ensure that your chosen sensor is fully compatible with your specific configuration.
Indephts
Possible combinations
This table outlines the various configurations and their corresponding applications, helping you quickly identify the best solution for your system.
Downloads
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