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
4-20 mA current loop output for reliable long-distance signal transmission
50m current loop 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 pyranometers
Fast response time of <25 seconds for near real-time monitoring
Wide operating temperature range: -40°C to +80°C
2-year warranty for peace of mind

PYR2-420 – Class C Thermopile Pyranometer

Cost-effective Class C Thermopile Pyranometer for reliable solar radiation measurement in various photovoltaic and meteorological applications.

Analog

Output

The PYR2-420 is a Class C (Second Class) Thermopile Pyranometer that measures solar radiation. It offers a simpler design than Class B models while maintaining high-quality materials. The device features a 4-20mA current loop output, providing good linearity, noise immunity, and simplified wiring. It’s suitable for solar power measurement and photovoltaic system monitoring where 5-10% precision is adequate.

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
4-20 mA current loop output for reliable long-distance signal transmission
50m current loop 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 pyranometers
Fast response time of <25 seconds for near real-time monitoring
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 PYR2-420 is a robust 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.

Simplified Yet Effective Design

While featuring a simpler construction compared to Class B models, the PYR2-420 maintains the use of high-quality materials throughout. Its single dome design with hemispherical optical glass provides excellent protection and transparency, ensuring reliable measurements in various environmental conditions.

High-Performance Electronics

The PYR2-420 incorporates the same advanced electronics as its Class B counterpart, resulting in exceptional signal linearity and noise immunity. The sensor’s output is normalized to a 4-20mA current loop, offering several advantages:

Simple two-wire cabling for easy installation
High resistance to electromagnetic interference
Reliable signal transmission over distances exceeding ten meters

These features make the PYR2-420 well-suited for a wide range of solar monitoring applications, from small-scale installations to larger solar farms.

Durable Construction for Outdoor Use

Engineered for long-term outdoor deployment, the PYR2-420 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 PYR2-420 undergoes careful calibration against a Secondary Standard (Class A 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: PYR2-420
Classification: ISO 9060 Class C (Second Class) Thermopile Pyranometer
Reference Standards: ISO 9060:1990, ISO 9060:2018
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: < 25 seconds
Working Temperature: -40°C to +80°C
Output Precision:
- Tilt response (0°-90°): < ± 4%
- Temperature response (∆t = 50°K): < 8%
Power Supply: 9-30 VDC (protected against short circuit)
Encapsulation:
- Dome: Quartz [k5]
- Optical Glass: Single layer with high transparency (0.3-3 μm)
Body: Anodized Aluminum
Connector: Standard M8 3-pin female
Dimensions: Φ162 x 104mm (height)