Product Introduction
Description of Japan EKO Photoelectric Sensors MS-802 and MS-802F:
The MS-802 standard pyranometer is a reference sensor for measuring solar energy, providing high-precision irradiance. Its robust brass mechanical structure makes it a durable sensor suitable for use in harsh environments. The MS-802 is used as a standard for PV research and climate research worldwide. Combined with a solar tracker (STR series) or manual shading ring (RSR-01), global normal incidence (GNI) and diffuse (DHI) irradiance can be measured respectively.
The MS-802F is the MS-802 with an integrated ventilator unit to improve performance under various environmental conditions (preventing or reducing the effects of dew, rain, snow, ice, and dust).
Features of Japan EKO Photoelectric Sensors MS-802 and MS-802F:
Secondary Standard Pyrheliometer
Fast Response Time (95% < 5s)
Temperature Compensation
Wide Temperature Range
High-Quality Optical Glass Dome
Proper Cosine Response
MS-802F is MS-802 with a 110 Vac / 12 VDC ventilation system
Prevents any possible effects of frost, snow, and dust
Japan EKO Photoelectric Sensors MS-802 and MS-802FSpecifications:
| Model |
MS-802 / MS-802F |
| ISO 9060 Classification |
Secondary Standard |
| Response Time (sec) 95% |
5 |
| Zero Offset - Thermal Radiation (200W/m²) |
<6W/m² |
| Zero Offset - Temperature Change (5K/hr) |
<2W/m² |
| Instability (Change/Year) |
<0.5% |
| Non-linearity (1000 W/m²) |
<0.2% |
| Directional Response (at 1000 W/m²) |
< 10 W/m² |
| Spectral Selectivity (0.35 - 1.5 µm) |
< 1 % |
| Temperature Response (50°C band) |
<1 % |
| Tilt Response (at 1000 W/m²) |
<0.22% |
| Sensitivity (µV/W•m⁻²) |
Approx. 7 |
| Impedance (Ω) |
Approx. 500 |
| Operating Temperature Range (°C) |
- 40 to +80 |
| Irradiance Range (W/m²) |
0 - 4000 W/m2 |
| Cable Length |
10m |
| Wavelength Range |
285 to 3000 nm |
