PYR2-485 – Class C Thermopile Pyranometer

Key Features

High-performance thermopile sensor with 300-2900 nm spectral sensitivity
Single dome construction with high-transparency hemispherical optical glass
Durable anodized aluminum body for optimal outdoor performance
RS485 Modbus RTU output for reliable long-distance signal transmission (up to 500m)
50m cable included (optional lengths available)
Superior weather resistance for consistent performance in varied environments
Fully compliant with ISO 9060:1990 and ISO 9060:2018 standards
Precise calibration against Secondary Standard (Class A) pyranometers
Fast response time of <25 seconds for near real-time monitoring
Integrated high-precision inclinometer for perfect positioning
Wide operating temperature range: -40°C to +80°C
2-year warranty for peace of mind

PYR2-485 – Class C Thermopile Pyranometer

ISO 9060:2018 Class C certified, ensuring adherence to international standards for solar radiation measurement instruments

Digital

Output

The PYR2-485 is a Class C (Second Class) Thermopile Pyranometer, designed for scientific and meteorological applications. It features RS485 Modbus output for long-distance communication up to 500m. While simpler in construction than Class B models, it maintains high-quality materials. The device incorporates advanced electronics for reliable data processing and transmission, ensuring accuracy across various conditions. Since 2022, it includes a “virtual bubble level” for precise horizontal positioning. The PYR2-485 is suitable for solar power measurement and photovoltaic system monitoring, offering 5-10% precision.

Key Features

High-performance thermopile sensor with 300-2900 nm spectral sensitivity
Single dome construction with high-transparency hemispherical optical glass
Durable anodized aluminum body for optimal outdoor performance
RS485 Modbus RTU output for reliable long-distance signal transmission (up to 500m)
50m cable included (optional lengths available)
Superior weather resistance for consistent performance in varied environments
Fully compliant with ISO 9060:1990 and ISO 9060:2018 standards
Precise calibration against Secondary Standard (Class A) pyranometers
Fast response time of <25 seconds for near real-time monitoring
Integrated high-precision inclinometer for perfect positioning
Wide operating temperature range: -40°C to +80°C
2-year warranty for peace of mind

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Details

Advanced Sensor Technology

At the core of the PYR2-485 is a high-quality 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 good accuracy.

Sophisticated Digital Output

The PYR2-485 is equipped with an advanced electronics board featuring a microcontroller that manages sampling, averaging, temperature reading, and 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 PYR2-485 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.

Durable Construction for Outdoor Use

Engineered for long-term outdoor deployment, the PYR2-485 features:

A single dome design with hemispherical optical glass, ensuring good 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 PYR2-485 undergoes meticulous calibration against a Secondary Standard (Class A Thermopile Pyranometer), which is rechecked every 12 months. This calibration process, compliant with ISO 9847 standards, ensures a high level of measurement accuracy and traceability.

Optional Accessories

Customizable cable lengths: 3, 5, 10, 20 m
Bracket for Plane of Array installation
Bracket for pole installation
Albedo mounting kit (available upon request)

Specifications

Product Name: PYR2-485
Classification: ISO 9060:2018 Class C (Second 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: < 25 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)