APPARATUS FOR DOSING ALKALISING REAGENT OF SODIUM ANALYSER Russian patent published in 2008 - IPC G01N27/26 

FIELD: chemistry.

SUBSTANCE: invention refers to the field of measuring tools and is designed for using in devices of analytical control realising continuous measurement of activity of sodium ions in feedwater and in chemically desalinated water. Apparatus for dosing alkalising reagent of sodium analiser contains an insulated vessel for reagent, mixer and a means for regulating supply of the reagent. The vessel is connected with mixer by a pipe junction. The mixer is realised in the form of a chamber with controlled media feeder and offtake channels. The device is equipped with an air compressor for cutting operating costs for maintenance, enhancing stability and precision of measurements. The lower section of the outlet of compressor is situated in the bottom part of the vessel for reagent. The volume of the mixer chamber is made for a larger potential volume of the mixture of air and vapor reagents that is delivered in it. The upper section of the mixer chamber has a channel that communicates with atmosphere. The device is equipped with an automatic means of regulating the feed of the reagent. Inside of the vessel for reagent there's a heating element. The heating element is connected with a means of regulating the feed of reagent. Operating costs are brought down due to the lower consumption of reagent and, correspondingly, due to the lesser number of scheduled operations for its replacement. Enhancement of stability and precision of measurements is ensured by consistency of reagent concentration in the controlled medium.

EFFECT: enhancement of stability and precision of measurements of activity of sodium ions in feedwater and in chemically desalinated water.

6 cl, 1 dwg