$745.96
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Pyranometer Shadow Ring
Specifications
| Material | Anodised Aluminium |
|---|---|
| Function | Forming a diffusometer when combined with a pyranometer |
| BASE PLATE DIAMETER | 250 x 10-3 m |
| Weight | 15 kg |
| Diffusometer measurand | Diffuse solar radiation in W/m2 |
| Ring inner diameter | 476 x 10 power-3 m |
| Ring rim height | 22 |
| Ring width | 44 |
| Ring profile | U-profile |
| Average view angle | 10.6 Degree |
| Ring height/radius ratio | 0.185 |
| Maximum diameter shaded area | 40 x 10-3 m |
| Pyranometer tilt angle range | -90 to 90 Degree |
| Sliding bar resolution | 1 x 10-3 m |
| Sliding bar accuracy | +/- 0.5 x 10-3 m |
| Sliding bar range | +/-110 x 10-3 m |
| Maximum bounding box height | 770 x 10-3 m |
| Maximum bounding box depth | 725 x 10-3 m |
| Maximum bounding box width | 516 x 10-3 m |
| Horizontal bar height | 246 x 10-3 m |
| Rated operating temperature range | -40 to +80 Degree C |
Key Features
- cost effective solution for deriving the constitute global short-wave diffuse and direct beam solar
Product Description
When properly installed and routinely adjusted, the Shadow-Ring obstructs the daily direct beam solar component from irradiating the radiometer mounted within the shadow-ring, from sunrise to sunset. Mechanical adjustment of the Shadow Ring is recommended every two days for optimal measurement performance.The resulting measurement when optioned with a class 1 pyranometer is representative of the total global diffuse short-wave irradiance signal in W/m. Because the shadow-ring obstructs a portion of the diffuse sky field measured by the pyranometer, it is recommended to apply a small multiplier correction to account for the sky-field obstruction in the calculated diffuse irradiance measurement results. When used in conjunction with a second non-shaded pyranometer, it is possible to infer direct beam solar disk irradiance by subtracting the corrected shaded pyranometer diffuse irradiance values from the non-shaded pyranometer global solar irradiance values, for the same time indices sampled.The Shadow Ring provides a reliable cost effective solution for deriving the constitute global short-wave diffuse and direct beam solar irradiance components, in contrast to auto-tracking radiometer instrument solutions costing thousands more.
- auto-tracking radiometer instrument solutions costing thousands
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