Instrument: sea level recorder

Dataset: 
pH temp sal
Instrument: 
sea level recorder
Instrument Short Name:
Community Standard Description
(http://vocab.nerc.ac.uk/collection/L05/current/111/)
Instrument Description:

Instrument that makes smoothed measuremeants of the elevation of the sea surface relative to a fixed vertical datum. Also called a tide gauge, various types.

PI supplied instrument name: water level logger
Dataset-specific description