Homemade solution concentration detector ----- Concentration Monitor

Self-made solution concentration detector, Concentration Monitor Keywords: self-made solution concentration detector Self-made solution concentration detector The circuit shown in the drawings is a solution concentration detector. First, the principle of circuit The city is electrically converted to the transformer B by a pressure reduction of 10V, and then the flow rate of C1, C2 and RL, two 6.8V regulator tube knife two-way limits (stable voltage) to ensure voltage value detected at both ends of the probe. Objectively, accurately reflect the concentration value of the small solution. When the two stainless steel probes are inserted into the solution, the secondary electrical stabilizing pipe is subjected to a square wave, and the resistance between the two probes is added to the base of 9014, so that the base electron is concentrated with the solution concentration. The change in resistance changes, so that the on state of 9014 is related to the concentration of the solution. The head of the collecting electrode connected to 9014 can indicate the concentration of the detected solution. Second, production, correction and scale The two probes must be electrically conductive and produced for materials that are highly stabilized in solution. Stainless steel is preferred. The two-pin spacing can be inserted into the container port and fixed. The detection handle is connected to the two wires between the instruments. If you pick up the plug socket, you should ensure that contact resistance (ie introduced measurement error) will not be introduced in the future. Correction. The probe pointer "shorts", adjusting "RP (4.7kΩ), makes the table head pointer as" 0 points "," 0 points "starts to work as the" concentration "scale. Its concentration can be directly determined by the "percentage concentration", "gram molecule concentration", "equivalent concentration", and the standard solution, such as "percentage concentration", "gram molecule concentration", "equivalent concentration", and a standard solution of known concentrations. certainly. This "solution concentration detector" can also be used in a "water purity detector" as a "water purity detector".

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