JPS594461U

JPS594461U - Solution concentration change detection device

Info

Publication number: JPS594461U
Application number: JP9821182U
Authority: JP
Inventors: 明男丸山
Original assignee: ホシザキ電機株式会社
Priority date: 1982-07-01
Filing date: 1982-07-01
Publication date: 1984-01-12
Also published as: JPH035899Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の溶液の濃度変化検知装置を示す回路図、
第２図は第１図の装置の一部を等価回路で示した図、第
３図ａ　”−ｃは第１図の装置に関して得られる波形図
、第４図は本考案に係る溶液の濃度変化検知装置を示す
回路図、第５図は第４図の装置の一部を等価回路で示し
た図、第６図ａ及びｂは第４図の装置に関して得られる
波形図、そして第７図は矩形波の立上りが遅れた場合の
波形図である。１・・・・・・矩形波発振器、２，３・・・・・・電極
、４・・・・・・容器、５・・・・・・溶液、６・・・
・・・抵抗器、７・・・・・・増幅・検波装置、８・・
・・・・出力計、９・・・・・・コンデンサ。尚、図中
、同一符号は同−又は相当部分を示す。Figure 1 is a circuit diagram showing a conventional solution concentration change detection device.
Figure 2 is an equivalent circuit diagram of a part of the apparatus shown in Figure 1, Figure 3 a''-c are waveform diagrams obtained for the apparatus shown in Figure 1, and Figure 4 is the concentration of the solution according to the present invention. A circuit diagram showing a change detection device, FIG. 5 is a diagram showing an equivalent circuit of a part of the device in FIG. 4, FIG. 6 a and b are waveform diagrams obtained for the device in FIG. 4, and FIG. is a waveform diagram when the rise of the square wave is delayed. 1... Square wave oscillator, 2, 3... Electrode, 4... Container, 5... ...solution, 6...
...Resistor, 7...Amplification/detection device, 8...
...output meter, 9...capacitor. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

(1) A pair of electrodes placed apart in a solution; a rectangular wave oscillator connected in series to the pair of electrode plates via a resistor; a device for amplifying and detecting the voltage across the resistor; and the amplification and detection. A solution concentration change detection device comprising: an output meter connected to the device, wherein a capacitor of a predetermined capacity is connected in parallel with the resistor.

(2) The required capacitance has a relationship of C1R1≧C2R2, where C is the capacitance between the electrodes, R is the resistance between the electrodes, C2 is the predetermined capacitance, and R2 is the resistor. The device for detecting a change in concentration of a solution according to claim 1, which is a resistance value of the utility model.