Concept
Unisense oxygen microsensor
| URI | http://vocab.nerc.ac.uk/collection/L22/current/TOOL0461/1/ | ||
|---|---|---|---|
| Within Vocab | SeaVoX Device Catalogue | ||
| Alternative Labels | Unisense oxygen microsensor | ||
| Definition | A miniaturized Clark-type dissolved oxygen instrument, including glass micro-sensors with minute tips (diameters ranging from 1 to 800 um). A gold sensing cathode is polarized against an internal reference and, driven by external partial pressure, oxygen from the environment penetrates through the sensor tip membrane and is reduced at the sensing cathode surface. A picoammeter converts the resulting reduction current to a signal. The sensor also includes a polarized guard cathode, which scavenges oxygen in the electrolyte, thus minimizing zero-current and pre-polarization time. | ||
| Date | 2012-02-16T10:05:14 | ||
| Identifier | SDN:L22::TOOL0461 | ||
| Note | accepted | ||
| Is Version Of | TOOL0461 | ||
| version | 1 | ||
| Broader | L05:351 |
dissolved gas sensors | |
L19:SDNKG17 |
sensor_model | ||
| Related | B75:ORG00575 |
Unisense A/S | |
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