EKO Instruments MS-57 Pyrheliometer
Ultra-fast and incredibly accurate, with competition-beating long-term stability and exceptional reliability; the ISO 9060:2018 Class A MS-57 Pyrheliometer is a unique, second-to-none, direct normal incidence (DNI) solar irradiance sensor fully traceable to the World Radiometric Reference.
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Designed for solar energy research, monitoring, and meteorological applications and built to weather extreme conditions, the MS-57 features an operating temperature range from -40 to +80°C and comes with an integrated low power heater to prevent dew and frost deposition on the outside window.
- ISO 9060:2018 Class A, Spectrally Flat & Fast Response
- <0.2s Ultra-fast response for always accurate measurements
- Unique <0.5% non-stability change of 5-years
- Operating temperature range from -40 to +80°C
- Integrated anti-frost & dew window heater
- Efficient, low power consumption
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 |