Natural Resources Canada, Geological Survey of Canada [custom] Bottom Pressure Recorder
|Within Vocab||SeaVoX Device Catalogue|
|Alternative Labels||NRCan GSC BPR|
|Definition||A bottom pressure recorder designed by Natural Resources Canada's (NRCan) Geological Survey of Canada (GSC) Pacific Geoscience Centre (PGS). It was designed specifically for the Canadian underwater cable system NEPTUNE as part of the Ocean Networks Canada Ocean Observatory Project. As well as monitoring pressure, the system also measures temperature and conductivity, to facilitate detection and characterisation of tsunamis and other shallow and deep oceanographic transients. Data is recorded to onboard flash memory, and the BPR is supplied with an additional non-rechargeable lithium thionyl chloride battery pack to provide power during cable power outages. The BPR is supplied with analog-to-digital conversion electronics, a real-time clock, an on-board logger, pressure housing and a seafloor frame compatible with ROV constraints. Temperature sensor: GE Industries thermistor; Pressure sensor: Paroscientific 8B4000-1; Conductivity sensor: Sea-Bird 4M. When connected to the NEPTUNE cable system, the BPR produces pressure measurements at 1 Hz. The sample period is 1 second for pressure and 10 seconds for temperature and conductivity. The BPR has an absolute pressure accuracy < 1 ppm full scale.|
|Has Current Version||1|
|L05 SeaDataNet device categories - (3)|
||Natural Resources Canada, Geological Survey of Canada||Mapping: 1623000|
||Natural Resources Canada, Geological Survey of Canada||Mapping: 1623004|
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