Indepths
Details
Cutting-Edge Sensor Technology
At the heart of the PYR1-420 lies a high-performance 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 precision.
Advanced Signal Processing
The PYR1-420 incorporates sophisticated electronics to amplify the delicate signal from the thermopile sensor. Utilizing top-tier operational amplifiers, this pyranometer achieves outstanding performance in terms of linearity, noise immunity, and consistent behavior across temperature variations and extended periods. The result is a highly reliable and accurate measurement system that maintains its precision over time.
Optimized Output for Long-Distance Transmission
The sensor’s output is normalized to a 4-20mA current loop, a standard in industrial instrumentation. This analog output mode offers several advantages:
- Simple two-wire cabling for easy installation
- High immunity to electromagnetic interference
- Reliable signal transmission over distances exceeding ten meters
These features make the PYR1-420 particularly well-suited for large-scale solar installations and remote monitoring applications.
Robust Design for Outdoor Durability
Engineered for long-term outdoor deployment, the PYR1-420 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 PYR1-420 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: PYR1-420
- Classification: ISO 9060:2018 Class B (First Class) Thermopile Pyranometer
- Reference Standards: ISO 9060, WMO, ISO 9846
- Output: 4-20 mA current loop
- Calibration: ISO 9847 compliant, using Secondary Standard Pyranometer
- Spectral Sensitivity: 300-2900 nm
- Measurement Range: 0-1600 W/m²
- Response Time: < 20 seconds
- Output Precision:
- Tilt response (0°-90°): ± 2%
- Temperature response (∆t = 50°K): < 4%
- Power Supply: 9-30 VDC (protected against short circuit)
- Encapsulation:
- Dome: Quartz [k5]
- Optical Glass: Double layer with high transparency (0.3-3 μm)
- Body: Anodized Aluminum
- Connector: Standard M8 3-pin female
- 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.
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