The precision UV-A Radiometer MS-212A is designed to measure UV-A radiation with high reliability. It is calibrated against a NIST traceable standard. The combination of a well-designed UV-A filter and a GaAsP photodiode guarantees its high performance to measure UV-A between 315 and 400nm. The energy in this spectral range accounts for 4 to 5% of the total solar radiation.
| Specifications (Typical) | MS-212A |
| Response time | 1 second (90% response) |
| Non-linearity | Less than ±2.0% |
| Directional response | < ± 10 % (Incident Angle 0° to 70°) |
| Temperature response | < ±1.5% (range of -10 to +50°C) |
| Output | 0 to 1V, 0 to 10mV |
| Sensivity | 0.01±0.001V/W/m² 0.1±0.01mV/W/m² |
| Impedance | 500Ω (V output), 100Ω (mV output) |
| Operating temperature range (°C) | -10 to +50°C |
| Cable length | 10m |
| Wavelength range | 315 to 400nm |
| Power supply | AC 85 to 264V , 47 to 440 Hz , 10W |
| Directional response at 1000W/m² | < 10 W/m² |