RBR's portable salinometer, the MS-315e is based on a new concept where the salinity of a sample is derived from the ratio of the conductance of the sample simultaneously compared with the conductance of a reference (ratiometric). Every sample is therefore standardized, and the standard itself is enclosed in glass to preserve the integrity of measurement for weeks. This dual cell innovation removes the need for highly stable bath temperatures, and the cells are surrounded by a well stirred oil bath to ensure thermal uniformity. This instrument achieves an accuracy of ±0.002 Practical Salinity Units (PSU).
The MS-315e provides oceanographers with a reliable shipboard method to verify the performance of sophisticated modern CTD instruments. By giving a direct measurement of RT against the reference it gives a rapid confirmation of accuracy of a CTD with low operating costs. Remote control and automation is achieved with the the MS-315e through the Ethernet (10 or 100baseT) interface. Using Ruskin and this Ethernet connection the MS-315e is capable of automatically measuring directly from sample bottles, pipelines, saltwater reservoirs, fish tanks, and calibration baths without the operator being present at the measuring site. Ruskin (our configuration and analysis software) interfaces with the MS-315e through an Ethernet connection and can command the MS-315e to fill or flush the measuring cells. The number of cycles of fills and flushes before a measurement is defined by the operator. TCP/IP sockets complement the graphical interface with both data output and a control channel using a simple command language, permitting complete integration into laboratory workflows.
The instrument has been developed in collaboration with the Marine Hydrophysical Institute (Ukraine), and it complements laboratory salinometers.
"Why change your sample to suit your salinometer? - Change your salinometer and measure salinity reliably"
|A New Method of Salinometry|
|Salinometer User Manual|