5V Solar Irradiance Meter SM206 Pyranometer with RS232 Aluminum Sensor - Precise BTU Measurement, Protective Cover, Weather - Resistant for Meteorology & Energy

Product description Item Type: Solar Radiation SensorMaterial: Aluminum alloyWeight: Approx. 298.00g/10.5ozProduct Size: Approx. 65x52x49mm/2.56x2.05x1.93inBottom Hole Distance: Approx. 57mm/2.24inOutput: RS232 (default for Modbus protocol)Red Wire: Power positiveBlack Wire: Connect to device RX, computer serial port pin 2Yellow Wire: Connect to device TX, computer serial port pin 3Green Wire: Power negativePower Supply: 5VSpectrum Range: 300 to 1100nmResolution: 1W/m2Measurement Range: 0 to 1500W/m2Sensitivity: 7 to 14μV/Wm-2Accuracy: ±5%Load Capacity: Current output impedance RL250ΩVoltage output impedance RL1KΩResponse Time: Cosine Response: Non Linearity: Annual Variation: Operating Environment: Temperature -40°C to 60°C; Humidity 100%RHPower Consumption: 0.48WFor Modbus CRC Checksum Steps:1. Initialize a 16 bit register to hex FFFF, referred to as the CRC register.2. XOR the first 8 bits of data with the low byte of the CRC register and store the result in the CRC register.3. Right shift the contents of the register by one bit, filling the highest bit with 0, and check the lowest bit.4. If the lowest bit is 0: Repeat step 3 (shift again). If the lowest bit is 1: XOR the CRC register with the polynomial A001 (1010 0000 0000 0001).5. Repeat steps 3 and 4 for a total of 8 shifts, processing the entire 8 bit data.6. Repeat steps 2 to 5 for the next 8 bit data. The final CRC register obtained is the CRC code (low byte first, high byte last).Troubleshooting:The displayed value on the instrument is incorrect during output. This may be due to wiring issues or communicating port failure, preventing the correct data acquisition. Please check the wiring for correctness and stability, make sure the serial port is not being used by other devices, and verify the serial port settings are correct.Package List：1 x Solar Radiation Manufacturer Contact Information 1

• [PRECISE SENSOR PERFORMANCE]: Equipped with a high accuracy photosensitive core and ±5% accuracy, this solar irradiance meter measures total solar radiation from 300 to 1100nm with rapid response 5 seconds — ideal for precise BTU monitoring and energy studies.
• [DURABLE ALUMINUM CONSTRUCTION]: Crafted from premium aluminum alloy with a quartz glass cover featuring optical cold work, this sensor resists harsh environmental impact ensuring long-lasting stability and reliable outdoor use in variable weather.
• [USER-FRIENDLY DESIGN]: The protective cover safeguards the sensor during transport and adverse weather; it can be easily removed by rotating and unscrewing, providing convenient maintenance and ensuring accurate measurements anytime.
• [VERSATILE APPLICATIONS]: Supports RS232 output with Modbus protocol compatibility; for meteorological research, solar energy monitoring, construction projects, and professionals needing accurate sunshine hour and BTU data.
• [TRUSTED ACCURACY & SUPPORT]: Features cosine response error ±10% and annual variation less than ±5%, backed by detailed wiring and troubleshooting guides to ensure seamless integration and dependable long-term performance.