FSP10 Pyranometer Solution

• Date：12/05/2025/
• Source：
• Author：

I. Project Background & Requirements

Accurate measurement of solar radiation is crucial for meteorological observation, solar energy utilization, ecological research, and related fields. The precision of these measurements directly impacts the efficiency evaluation of photovoltaic power plants, climate model development, and material weather resistance testing results. Currently, high-precision radiation sensors on the market are predominantly imported, which are costly and insufficient for large-scale applications. The FSP10 Pyranometer, a domestically developed device compliant with international Class I standards, delivers equivalent accuracy at one-fourth the cost of imported counterparts, offering an economical and efficient solution for solar radiation monitoring.

II. Product Overview

The FSP10 Pyranometer is a Class I short-wave radiation sensor compliant with the latest ISO and WMO standards, designed to measure solar radiation flux (in W/m²) within a 180-degree field of view (hemispherical direction). Featuring a dual-spherical quartz glass housing, it generates an output voltage proportional to the radiation flux via a thermocouple sensor. The device covers a spectral range of 305–2800 nm (at 50% transmittance), has a measurement range of 0–2000 W/m², and offers a sensitivity of 7–14 μV/Wm⁻², making it suitable for high-precision monitoring applications in meteorology, photovoltaics, scientific research, and other fields.

III. Core Advantages

1.High Precision and Stability:

Nonlinearity <±1% (100–1000 W/m²), directional response error <±10 W/m² (at 80 degrees zenith angle), annual stability variation <±0.5%, with measurement accuracy comparable to that of the Kipp & Zonen CMP21 Class II standard radiometer; short-term comparative tests show errors of only –0.10% to –0.14% on sunny days and –1.48% to –1.67% on cloudy days, demonstrating high data reliability.

Excellent environmental adaptability:

Equipped with an independent temperature compensation unit, it exhibits a temperature response of <±2% (-10°C to +40°C) and operates within a temperature range of-40°C to +80°C, ensuring stable performance under extreme climatic conditions. Featuring a optimized cosine-response design, it maintains accurate measurements even at low solar elevation angles, significantly reducing tilt errors (<±1%).

3.Low cost and easy integration:

The price is only one-fourth that of imported equipment, significantly reducing monitoring costs; it operates in a fully passive mode with output signals directly readable via millivolt meters and is compatible with most data acquisition systems. The 5-meter cable weighs only 0.9 kg, ensuring convenient installation and deployment.

4.Low maintenance requirements:

The device contains built-in silica gel desiccant; regular cleaning of the glass cover ensures optimal performance. Calibration is traceable to WRR (per ISO 9847 procedure), with a recommended biennial calibration for low maintenance costs.

IV. Technical Solution Details

Photovoltaic power station:

Meteorological observation:

Material Testing:

Research and Education:

V. Application Scenarios

The device is certified under ISO 9001:2015 and comes with a maximum 5-year warranty, supported by professional calibration services. A 24/7 technical hotline is available to assist with installation and maintenance issues, ensuring long-term reliable operation.

The FSP10 Pyranometer is designed around the principles of "high precision, low cost, and strong adaptability," offering a cost-effective solution for solar radiation monitoring and advancing efficient development in both solar energy utilization and meteorological research.