Class A Thermopile Pyranometer
The SEVEN thermopile pyranometer 3S-TP-MB-A is designed to meet the ISO 9060:2018 (fast-response, spectrally flat, Class A) and IEC 61724-1:2021 Class A standards.
Equipped with cutting-edge thermopile detector and diffuser technology, this high-precision device features low zero-offset behavior and exceptional stability, ensuring highly accurate solar radiation measurements. This advanced technology makes it an ideal solution for meeting the highest standards in solar energy system performance monitoring.
The SEVEN pyranometer also includes a humidity sensor and two temperature sensors, enabling multi-parameter environmental monitoring. These additional features allow for precise adjustments and accurate readings under varying conditions.
The measured irradiance, humidity, and temperature data are transmitted to data loggers and other receiving units via a serial RS485 interface with the Modbus RTU protocol.
Additionally, SEVEN offers Class B and Class C pyranometers upon request.
TECHNICAL SPECIFICATIONS
| Item Code | 3S-TP-MB-A |
| Measured Data | Global Horizontal (GHI) or POA Irradiance, Internal and Housing Temperature and Internal Humidity |
| Sensor Type | Thermopile |
| Spectral range (50% points) | 280 to 3000 nm |
| Irradiance Range | 0 – 4000 W/m² |
| Response time (95%) | 0.5 s (less than 10s; as per ISO9060:2018 standard Class A) |
| Zero offset A – Thermal Radiation (200W/m²) | ± 1 W/m² (± 7 W/m²; as per ISO9060:2018 standard Class A) |
| Zero offset B – Temperature change (5K/hr) | ± 1.5 W/m² (± 2 W/m²; as per ISO9060:2018 standard Class A) |
| Total zero off C – Total zero off-set | ± 3 W/m² (± 10 W/m²; as per ISO9060:2018 standard Class A) |
| Non-stability (change/year) | < 0.5% (± 0.8%; as per ISO9060:2018 standard Class A) |
| Non-linearity (100 to 1000 W/m²) | ± 0.2% (± 0.5%; as per ISO9060:2018 standard Class A) |
| Directional response (at 1000W/m² | 0 to 80°) | ± 10 W/m² (± 10 W/m²; as per ISO9060:2018 standard Class A) |
| Spectral Error | ± 0.2% (± 0.5%; as per ISO9060:2018 standard Class A) |
| Temperature response (-20°C to 50°C) | ± 0.4% (± 1%; as per ISO9060:2018 standard Class A) |
| Irradiance Resolution | 0.1 W/m² |
| Internal Humidity | |
| Range | 0% to 100% |
| Accuracy | ± 1% RH (20…70 %) @ 25°C |
| Resolution | 1% |
| Internal Temperature | |
| Range | -40°C to +85°C |
| Accuracy | ± 0.1°C (5…60°C) @ 20…80% RH |
| Resolution | 0.1°C |
| Housing Temperature | |
| Range | -40°C to +85°C |
| Accuracy | ± 0.2°C |
| Resolution | 0.1°C |
| Accuracy of Bubble Level | ± 0.1° |
| Viewing angle | 2π sr |
| Data Output | RS485 up to 38400 Baud |
| Communication Protocol | Modbus RTU (Optional Modbus TCP/IP) |
| Output Rate | 1/s |
| Operating Temperature Range | -40°C to 85°C |
| Supply voltage | 12 to 30 V DC |
| Power Consumption | 20 mA @ 24 V DC |
| Cable Features | 3x2x0,14 mm² Cable – LI2(ST)C11Y- PUR, UV and weather resistant |
| Cable Length | 3 m standard length (Custom length available) |
| Galvanic Isolation | 1000 V between power supply and RS485 Bus |
| IP Rating | IP 67 |
| Dimensions | Ø 140 mm x 110 mm |
| Sensor Housing Material | Alloy Aluminum |
| Shade Disk Material | ABS |
| Weight | 0,98 kg |
| Standards | ISO 9060:2018, Fast Response Spectrally Flat Class A (Secondary Standard), IEC 61724-1:2021, Class A, ISO/TR 9901:1990 ISO 9847 |