The utility model relates to the technical field of online
sodium degree instruments, and particularly discloses an online
sodium degree analyzer pretreatment device which comprises a box body, an online
sodium degree instrument, a basifier
bottle, a measuring
cell and a Venturi tube, and the online sodium degree instrument, the basifier
bottle, the measuring
cell and the Venturi tube are arranged in the box body, and a detection
electrode used for being inserted into the measuring
cell is arranged on the online sodium degree instrument; one end of the venturi tube is used for being connected with a
sample water feeding tube, the other end of the venturi tube is connected with the measuring cell through a water outlet tube, the inner
diameter of the venturi tube is large at the two ends and small in the middle, and the alkalizer
bottle is communicated with the position, with the smaller inner
diameter, of the venturi tube through a
feeding tube. The
diisopropylamine adding device has the effect of solving the problems that frequent maintenance and repair are needed when an external pump is adopted for adding
diisopropylamine, and the use cost is increased.