Automatic Sun-Tracking Pyrheliometer: High-Precision Solar Radiation Monitoring Solution

Industrial-Grade Solar Radiation Monitoring: High-Precision Quantitative Solutions for Smart Energy and Meteorological Integration

In the process of smart energy transformation and refined meteorological observation, accurate “measurement” of solar energy is the cornerstone for evaluating photovoltaic system efficiency (PR value) and the accuracy of meteorological models. As a professional solar radiation measurement equipment manufacturer, NiuBoL deeply understands the deployment pain points of system integrators (SI) and engineering contractors in complex environments, providing one-stop sunlight quantitative data support from basic sensing to fully automatic tracking.

Core Dimensions of Solar Radiation Measurement: Full Coverage from GHI to DNI

For industrial-grade monitoring networks, a single radiation parameter can no longer meet the needs of modern prediction algorithms. The NiuBoL solution achieves full spectral coverage of solar energy.

1. Quantitative Foundation of Global Horizontal Irradiance (GHI)
GHI (Global Horizontal Irradiance) is the total amount of solar radiation received on a horizontal surface. NiuBoL pyranometers use precision thermopile sensing elements with a spectral response covering 280-3000nm.

Physical Conversion Logic: The sensing surface absorbs shortwave radiation and converts it into heat energy, generating a microvolt-level voltage signal proportional to the radiation power through the thermoelectric effect.

Application Significance: GHI is the core input data for photovoltaic power station site selection planning and power generation forecasting.

2. Direct Normal Irradiance (DNI) and Diffuse Horizontal Irradiance (DHI)
For tracking photovoltaic mounts (Tracker) or high-precision meteorological research, DNI (Direct Normal Irradiance) and DHI (Diffuse Horizontal Irradiance) are indispensable parameters.

DNI: Measures only the direct energy from the solar disk, key for evaluating CSP (Concentrated Solar Power) and bifacial module efficiency.

DHI: Uses a shading device to exclude direct light and obtain scattered energy from the atmosphere, used to analyze atmospheric turbidity and environmental radiation models.

NBL-W-ATSRM Three-in-One Fully Automatic Tracking System:

For national meteorological stations, photovoltaic empirical fields, and research institutions, NiuBoL has launched the NBL-W-ATSRM fully automatic sun-tracking pyrheliometer. This system perfectly integrates global radiation, direct radiation, diffuse radiation, and sunshine duration monitoring.

Core Technical Advantages: Dual-Mode Drive Tracking Algorithm

• Time Tracking and Optical Tracking Synergy: The system obtains real-time longitude, latitude, and time information through a built-in GPS module, using astronomical algorithms to predict the sun’s position (time mode); it also cooperates with a high-precision four-quadrant sensor for real-time deviation correction (optical tracking mode).

• Extremely High Tracking Accuracy: Dynamic tracking error<0.1°, ensuring the pyrheliometer tube is always perpendicular to the solar disk.

• All-Weather Stability: Automatically adjusts the solar declination angle, achieving dead-angle-free tracking from horizontal 0~360° and pitch 0~120°.

Digital Operation and Maintenance Optimization

• GPS Automatic Deployment: No manual entry of geographic coordinates required; upon power-on, the system automatically locates and synchronizes time, significantly shortening on-site debugging cycles.

• Environment-Adaptive Design: The device maintains excellent temperature characteristics (±2%) even in extreme environments from -30℃ to +60℃, ensuring data continuity.

System Compatibility and Reliability:

Electrical Performance and Signal Output

NiuBoL sensors are optimized for industrial bus environments, facilitating access to various data collectors or PLCs:

• Sensitivity: Stable at 7~14μV/Wm².

• Internal Resistance: Pyranometer approximately 180Ω, pyrheliometer approximately 90Ω, suitable for high-impedance acquisition ends.

• Multi-Voltage Support: Supports DC 12V (suitable for field solar stations) or AC 220V (suitable for permanent power stations).

Protection for Complex Working Conditions

• Wind Load Resistance: Uses high-torque industrial-grade motors with strong mechanical wind resistance.

• Anti-Condensation Design: The sensor is equipped with a color-changing silica gel viewing window inside to effectively monitor internal dryness and prevent condensation on optical lenses from affecting accuracy.

NBL-W-ATSRM Three-in-One Fully Automatic Solar Radiation Tracking System Key Technical Specifications List

Typical Engineering Application Selection Guide for Fully Automatic Solar Radiation Tracking System

FAQ:

1. How is the data output from NiuBoL pyranometers? Does it support Modbus protocol?
The sensor itself outputs microvolt-level signals. Through NiuBoL’s supporting data logger or transmitter, it can be converted to standard RS485 (Modbus-RTU) signals, seamlessly connecting to various SCADA systems or cloud platforms.

2. How does the NBL-W-ATSRM high-precision solar radiation monitoring solution define “sunshine duration”?
According to WMO specifications, when the daily direct radiation intensity (DNI) reaches or exceeds 120W/m², the system automatically starts accumulation. Data is recorded in minutes and is an important parameter for evaluating regional climate resources.

3. Can the equipment operate normally in areas with heavy sand and dust?
Yes. However, sand and dust can block the optical interface, leading to lower measured values. For such projects, we recommend that integrators include “regular cleaning of the sensing surface” in their operation and maintenance inspection SOPs.

4. How often should the sensor be calibrated?
To ensure data rigor, it is recommended to perform traceability calibration every 24 months.

5. How to use it in environments with high electromagnetic interference (such as near substations)?
NiuBoL sensor housings and cables feature industrial-grade shielding design, effectively suppressing common-mode interference and ensuring the integrity of microvolt-level signals during transmission.

6. What to do if water mist appears inside the pyrheliometer?

The device is equipped with an observable desiccant box. If the silica gel changes color, replace the desiccant promptly. The non-contact optical interface design ensures simple maintenance operations.

7. What are the installation site requirements for the NBL-W-ATSRM high-precision solar radiation monitoring solution?
The installation point should ensure no shading obstructions (including distant trees, utility poles, or buildings) within the sun’s annual trajectory. NiuBoL provides supporting installation bases with high-precision level adjustment.

Summary

In today’s pursuit of efficient energy utilization and precise forecasting, the solar radiation monitoring solutions provided by NiuBoL are not merely data collection tools but the “decision cornerstone” for large-scale energy projects. From precise GHI monitoring to complex three-in-one fully automatic tracking systems, we are committed to reducing system integration difficulty and enhancing data reliability under harsh working conditions.
Choosing NiuBoL means choosing a “solar measurement standard” aligned with international norms, transforming every bit of solar energy into clear, quantifiable, and decision-ready digital assets.

Pyranometer Solar Radiation Sensors data sheet

NBL-W-HPRS-Solar-Radiation-Sensor-Instruction-Manual-V3.0.pdf

NBL-W-SRS-Solar-radiation-sensor-instruction-manual-V4.0.pdf

3-in-1 Fully Automatic Tracking Solar Radiation Meter.pdf