DEVICE FOR RECORDING CONDUCTION IN LIQUIDS Russian patent published in 2018 - IPC G01N27/06 

FIELD: measurement technology.

SUBSTANCE: invention relates to the study of the physicochemical properties of liquids by measuring electrical conduction. Device for recording the electrical conduction in liquids consists of a conductivity sensor, which includes a reference generator, output of which is connected to the input of a first signal rectangular pulse driver, and its output is connected to the input of a transformer converter and a cuvette with the electrolytic liquid, according to the invention, an amplifier is additionally inserted, input of which is connected to the output of the transformer converter, and the output to the input of a second driver, wherein the output of the second driver is connected to one of the inputs of the artificial signal driver, the second input of which is connected to the output of the reference generator, and the third input to the output of a frequency divider, wherein the input of the frequency divider is connected to the output of the reference frequency generator, the output of the artificial signal driver is connected to the input of a selective filter, output of which is connected to the input of a comparator, then to one of the inputs of a phase driver which second input is connected to the output of the frequency divider.

EFFECT: invention provides an increase in sensitivity and accuracy, and the sensitivity and accuracy values can vary over a wide range.

1 cl, 4 dwg