Bucket S.T.D. measurements

Abstract

It is shown that both bubble effects and small temperature differences between the conductivity cell and the temperature sensing elements are important considerations when using conventional S.T.D. systems for monitoring sea surface salinity whilst steaming. By carefully attending to these details, merely placing an S.T.D. in a bucket flushed with a hose will provide a system capable of absolute accuracy of 0·01% and resolution 0·001%.