Concept
Chelsea Technologies 4-pi Photosynthetically Active Radiation sensor HB 071
| URI | http://vocab.nerc.ac.uk/collection/L22/current/TOOL0480/1/ | |
|---|---|---|
| Within Vocab | SeaVoX Device Catalogue | |
| Alternative Labels | CTG HB 071 4-pi PAR | |
| Definition | A submersible instrument designed to measure irradiance over the photosynthetically active radiation (PAR) spectral range. It includes two hemispherical sensors to provide a spherical field of view and uses a logarithmic amplification to provide light measurements over several orders of magnitude. It uses a photodiode with enhanced blue/green sensitivity which, when used in conjunction with blue-tint glass, produces a quantum response that is flat to +/- 3% over the range 450 to 700nm, and 8% at 400nm The instrument has a depth rating of 500m. | |
| Date | None | |
| Identifier | TOOL0480 | |
| Note | accepted | |
| Is Version Of | TOOL0480 | |
| version | 1 | |
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