Dual-Sensing for Solar Radiation and Temperature

The MBMet-502 Series provides accurate, real-time measurement of both global solar irradiance and sensor surface temperature, making it ideal for precise monitoring of photovoltaic (PV) system performance. It supports data-driven optimization of energy generation and array efficiency.
The MBMet-502 uses a High- Quality Monocrystaline solar cell connected to a High accuracy shunt. Each sensor uses active temperature compensation to compensate for any measurement shifts and errors caused by the temperature co-efficient relationship with the Short Circuit Current. This compensation is done by using a small and highly accurate PT1000 Class A Temperature Sensor attached to the backside of the Solar Cell.
The Sensor MBMet-502 is housed in a rugged cast aluminum enclosure that is IP65-rated for protection against dust and water. It is also equipped with an RS-485 interface for easy integration with data acquisition systems. The sensor is easy to install and use, making it a great choice for both professional and DIY solar installers.
Each MBMet-502 Sensor is individually calibrated using a Specially Calibrated Reference Cell along with a Class AAA Solar Simulator. Each Sensor comes along with a serialised and Traceable Calibration Certificate. The Calibration process is strictly followed as per IEC-60904-2 Standard as specified by the IEC-61724-1 Standard, ensuring Reliable and Precise Data.
Advanced Input & Communication Support
The sensor is equipped to handle RTD inputs (PT100/PT1000), analog signals (4–20 mA), and digital inputs, offering high flexibility for mixed-signal PV monitoring setups. With RS-485 Modbus RTU output as standard, MBMet-502 ensures reliable integration with SCADA, MBLogger, and cloud-based analytics platforms.
Built for Harsh and Variable Environments
Housed in a compact enclosure rated for -30°C to +70°C operation, the MBMet-502 is designed for continuous use in diverse field conditions—from solar rooftops to ground-mounted plants in remote locations. Its rugged design supports high-humidity environments up to 99% RH without performance loss.