The MS-57 Pyrheliometer is an ISO 9060:2018 Class A direct normal irradiance (DNI) sensor designed for high-accuracy solar radiation measurements. Offering ultra-fast response, exceptional long-term stability, and World Radiometric Reference (WRR)-traceable calibration, it delivers reliable performance in demanding outdoor environments. With an integrated anti-frost window heater and a rugged design, the MS-57 is ideal for continuous solar energy and meteorological monitoring.
Specifications
| ISO 9060:2018 | Class A |
|---|---|
| Response time 95% | < 0.2 Sec |
| Zero offset A – Thermal radiation (200W/m²) | 0 W/m² |
| Zero offset B – Temperature change (5K/hr) | ± 1W/m² |
| Zero offset C – Total zero off-set | ± 1W/m² |
| Non-stability (change/year) | < 0.5%/5 years |
| Non-linearity (at 1000W/m²) | ± 0.2% |
| Spectral Error | ± 0.2 % |
| Temperature response (-20°C to 50°C) | ± 0.5% |
| Tilt Response (0-90° | 1000W/m²) | ± 0.2% |
| Wavelength Range | 200 to 4000 nm (50% points) |
| Irradiance range (W/m²) | 0 to 4000 |
| Sensitivity (μV/W/m²) | Approx. 7 |
| Signal Output | Analog |
| Impedance (Ω) | < 15000 |
| Operating temperature | -40 to 80°C |
| Ingress protection | IP67 |
| Standard Cable Length | 10m (Optional lengths 20m, 30m, 50m) |
| Window heater power requirement | DC 12V / 0.5W |
| Temperature Sensors | PT-100 Class A, Thermistor 44031 10kΩ |
Environmental Monitoring
Climate Monitoring
Photovoltaic Monitoring
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