GENEQ > Météorologie > Photomètre pour soleil
| Photomètre pour soleil |
|
The SPUV Sun Photometer measures direct normal
solar irradiance at up to ten narrowband wavelengths from 300 in the UV-B
through 1020 nm in the near-IR, and is the world's most advanced commercial
solar sun photometer. Thermally stabilized, environmentally sealed state-of-the-art
interference filters, with energy-absorbing visible pre-filters on UV channels
provide long term calibration stability. Instead of using a rotating filter
wheel, it makes measurements simultaneously across all channels meeting
the Baseline Solar Radiation Network's requirements for atmospheric turbidity
measurements.
A modular mechanical design permits rapid channel service. The SPUV mounts on most solar trackers (shown here mounted on the ST-1). The SPUV system includes the YESDAS-2 datalogger and works with YESDAS Manager data analysis software. For applications such as column ozone or atmospheric turbidity measurements, which require the measurement of discrete spectral lines in the solar spectrum, the SPUV offers the capabilities and accuracy of a scanning spectroradiometer but at a fraction of the cost and with less maintenance overhead. The SPUV filter spectrophotometers enable you to measure up to ten seperate wavelengths, extending from 300 nm in the UV-B to 940 nm in the near IR. Each instrument can be configured with six or ten channels at various wavelengths, depending on your applications requirements. (Except for the number of channels, the SPUV-6 and SPUV-10 are identical.) The modular design of the instruments allows you to easily upgrade a SPUV-6 to a SPUV10. Each SPUV channel is connectorized assembly that can be replaced in the field. Each channel contains a state-of-the-art ion-assisted deposition (hard coat) interference filter that is designed for long-term field operation and excellent calibration stability. The SPUV-6 is designed for UV-B applications and is typically configured with 300, 311, 317, 325, 332, and 368 nm channels. SPUV-10 configurations typically include the WMO-recommended wavelengths for atmospheric turbidity measurements (368, 500, 673, 778, and 870 nm) and collumn ozone measurements (300, 311, and 317 nm or 500, 615, 673 nm). Other wavelengths are also available, including 305, 325, and 940 nm. UV-wavelengths from 300 to 368 use 2 nm FWHM filters, while longer visible wavelengths use filters with 10 nm FWHM. |
| SPECIFICATIONS | |
| Wavelengths | Standard configuration includes choice of any six or ten of the following wavelengths: 300, 305.5, 311.4, 317.5, 325.5, 332.5, 368, 500, 615, 673, 778, 870, or 940 nm (UV filters: 2 nm FWHM bandpass; visible filters: 10 nm FWHM) |
| Field of view | Opening angle of 2.5° as prescribed by WMO #7 |
| Temperature range | ± 50°C |
| Signal output | Analog outputs 0-4 VDC low impedance, single-ended, interfaces to YESDAS datalogger |
| Size | Spectrometer is 28.5 cm (11") long and 17.5 cm (6") in diameter; weight is 5 kg (11 lb.). Mounts on most standard trackers |
| Power input | +11 to 14 VDC, @2A, 3-4 A at startup; drops to 1A typical |
| Weight | 11 lb. (5 kg) |
| Tracker | The base plate of the SPUV adapts to most solar trackers |
| YESPUV6SYS | SPUV6, Direct Beam Filter Spectrometer System. Measures at six 2 nm wavelenghts : (300, 311, 317, 325, 332 and 368nm), including Datalogger, Cable set, Tracker mount bracket (for ST-1) and user manual. |
| YESPUV10SYS | SPUV10, Direct Beam Filter Spectrometer System. Measures at ten wavelenghts : 2 nm wavelenghts at (300, 311, 317, 325, 332 and 368 nm and 4 additional 10 nm visible channels), including Datalogger, Cable set, Tracker mount bracket (for ST-1) and user manual. |
| YEYDASMGRK |
YESDAS Manager Sofware Kit |
| YEST1-0000 |
ST-1, Solar Tracker, AC Powered (manual) |
| YESMT3-000 | SMT-3, MOD2, Automatic Solar Tracker |