3 April 2013 Principle and implementations of a refracto-nephelo-turbidimeter for seawater measurements
Author Affiliations +
Optical Engineering, 52(4), 044402 (2013). doi:10.1117/1.OE.52.4.044402
Salinity and turbidity are two important seawater properties in physical oceanography. The study of physical oceanography requires a compact high-resolution in situ salino-turbidimeter to measure these two parameters in different ocean zones. Refractometry has proved to be an effective method to measure seawater salinity with a high resolution. Previous studies have shown that the transmission and scattering of light in a turbid medium impact the light beam deviation measurements, which makes the combination of salinity and turbidity measurements with the same sample mandatory. We analyze the requirements and challenges of a refracto-turbidimeter design from their measurement principles and correlations. According to these requirements, we propose a miniature refracto-nephelo-turbidimeter with a charge-coupled device, providing a salinity measurement resolution of 2  mg⋅kg −1 and a turbidity measurement resolution of 1% of the measurement range. Based on this refracto-nephelo-turbidimeter, different embodiments are discussed to meet the different requirements for different ocean zones.
Bo Hou, Philippe Grosso, Jean-Louis M. de Bougrenet de la Tocnaye, Marc Le Menn, "Principle and implementations of a refracto-nephelo-turbidimeter for seawater measurements," Optical Engineering 52(4), 044402 (3 April 2013). http://dx.doi.org/10.1117/1.OE.52.4.044402

Refractive index

Light scattering


Optical testing

Charge-coupled devices

Temperature metrology

Light sources

Back to Top