JPS638549A - Anticorrosiveness detection circuit of liquid containing rust preventives - Google Patents
Anticorrosiveness detection circuit of liquid containing rust preventivesInfo
- Publication number
- JPS638549A JPS638549A JP61151778A JP15177886A JPS638549A JP S638549 A JPS638549 A JP S638549A JP 61151778 A JP61151778 A JP 61151778A JP 15177886 A JP15177886 A JP 15177886A JP S638549 A JPS638549 A JP S638549A
- Authority
- JP
- Japan
- Prior art keywords
- output
- current
- detection circuit
- switch
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 18
- 238000001514 detection method Methods 0.000 title claims description 35
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 title claims description 15
- 230000003449 preventive effect Effects 0.000 title claims description 12
- 238000005260 corrosion Methods 0.000 claims description 40
- 230000007797 corrosion Effects 0.000 claims description 33
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 150000002739 metals Chemical class 0.000 claims description 5
- 230000004913 activation Effects 0.000 claims description 3
- 239000013556 antirust agent Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 2
- 239000000498 cooling water Substances 0.000 description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 239000003112 inhibitor Substances 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000002826 coolant Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000037213 diet Effects 0.000 description 2
- 235000005911 diet Nutrition 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、防食剤を含有する液体の防食性検出回路、
特に防食性検出回路の腐食センサとして使用する電極の
消耗又は劣化を減少できる防食性検出回路に関連する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a circuit for detecting corrosion resistance of a liquid containing an anticorrosion agent;
In particular, the present invention relates to a corrosion-resistant detection circuit that can reduce wear or deterioration of electrodes used as corrosion sensors of the corrosion-resistant detection circuit.
従来の技術
自動車のラジェータには、通常、不凍液又は防錆剤を添
加した冷却水が使用されている。即ち、ＬＬＣ（ロング
ライフクーラント）液と相称される添加剤を所定濃度（
約３０％）で水（約７０％）に混合した冷却液を自動車
エンジンの冷却剤として使用し、冷却水系の腐食及び凍
結を防止する方法が一般的に採用されている。このよう
な冷却水の防食剤としてアミン系有機防食剤又は亜硝酸
塩無機防食剤が使用される。この冷却水の防食性は、冷
却水を定期的に交換したり或いは部分的に補給する時間
的管理により良好な状態に維持されている。BACKGROUND OF THE INVENTION Automotive radiators typically use cooling water with added antifreeze or rust inhibitors. That is, an additive called LLC (Long Life Coolant) liquid is added to a predetermined concentration (
A commonly used method is to use a coolant mixture of water (about 70%) and water (about 70%) as a coolant for automobile engines to prevent corrosion and freezing of the cooling water system. An amine organic corrosion inhibitor or a nitrite inorganic corrosion inhibitor is used as a corrosion inhibitor for such cooling water. The anti-corrosion properties of this cooling water are maintained in a good condition by periodically replacing or partially replenishing the cooling water.
近年、防錆剤を含有する冷却水内にイオン化傾向の異な
る二種の金属を浸漬したときに発生するガルバノ電流を
測定することにより冷却水の防食性を自動的にｄｍ定す
る防食性検出装置が開発された。この装置は、第５図に
示すように、イオン化傾向の異なる二種の金属により形
成されかつラジェータの冷却水内に浸漬された一対の電
極１．２と、電極１．２間を流れる電流を増幅する増幅
器を有しこの増幅器の出力が所定レベルを越えると警報
出力を生ずるレベル検出回路３と、レベル検出回路の警
報出力で作Δ」される警報装置４とを有する。レベル検
出回路３は、イグニッションスイッチ５を通じて電源６
に接続される。In recent years, a corrosion resistance detection device has been developed that automatically determines the corrosion resistance of cooling water by measuring the galvano current generated when two types of metals with different ionization tendencies are immersed in cooling water containing a rust inhibitor. was developed. As shown in FIG. 5, this device uses a pair of electrodes 1.2 made of two types of metals with different ionization tendencies and immersed in cooling water of a radiator, and a current flowing between the electrodes 1.2. It has a level detection circuit 3 which has an amplifier for amplification and generates an alarm output when the output of the amplifier exceeds a predetermined level, and an alarm device 4 which is activated by the alarm output of the level detection circuit. The level detection circuit 3 connects the power supply 6 through the ignition switch 5.
connected to.
イグニッションスイッチ５をオンにしたとき、冷却水の
防食性が低下すると、電極１，２間を流れる電流が増大
し、レベル検出回路３が出力を発生して、発光ダイオー
ド又は音響警報装置を有する警報装置４が作動する。こ
のように、警報装置４の作動により自動車の運転者に冷
却水の防食性劣化を警告していた。When the ignition switch 5 is turned on, when the corrosion protection of the cooling water decreases, the current flowing between the electrodes 1 and 2 increases, and the level detection circuit 3 generates an output, causing an alarm with a light emitting diode or an audible alarm device. Device 4 is activated. In this manner, the activation of the alarm device 4 warns the driver of the vehicle of the deterioration of the anticorrosion properties of the cooling water.
一明が解決しようとする問題点
上記従来の防食性検出装置では、電極１，２が常時冷却
ノド中に浸漬されかつイグニッションスイッチ５をオン
状態に保持する間、電極１．２聞に継続的にガルバノ電
流が流れている。ガルバノ電流は、数十μＡ程度の微小
電流であるが、この電流が流れている間、アノード側の
電極を構成する金属は、冷却水中に溶出し、電食により
消損する。Problems that Kazumei tries to solve In the above-mentioned conventional anti-corrosion detection device, while the electrodes 1 and 2 are constantly immersed in the cooling nozzle and the ignition switch 5 is kept in the on state, the electrodes 1 and 2 are continuously A galvano current is flowing through. The galvano current is a minute current of about several tens of microamperes, and while this current is flowing, the metal constituting the anode side electrode is eluted into the cooling water and is consumed by electrolytic corrosion.
また、各電極の表面には冷却水中に含まれる荷電粒子、
腐食生成物、錆及びスケール等が付着しかつ堆積する。In addition, on the surface of each electrode, charged particles contained in the cooling water,
Corrosion products, rust, scale, etc. adhere and accumulate.
特に、冷却水の防食性が低下した場合は、電極の腐食及
び異物の付着により、電極は腐食減斌し、かつ１発生す
るガルバノ電流を正確にａｌり定できない欠陥が生ずる
。Particularly, when the anticorrosion properties of the cooling water deteriorate, the electrodes become corroded and deteriorated due to the corrosion of the electrodes and the adhesion of foreign substances, and a defect occurs in which the generated galvano current cannot be accurately determined.
この発明は、上記欠陥の無い防錆剤を含有する液体の防
食性検出回路を提供することを目的とする。An object of the present invention is to provide a corrosion protection detection circuit for a liquid containing a rust preventive agent that is free from the above-mentioned defects.
間１１点を解゛するための手段
この発明の防錆剤を含有する液体の防食性検出回路は、
防錆剤を含有する液体内にイオン化傾向の異なる二種の
金属を浸漬したときに発生するガルバノ電流を測定する
防食性検出装置において、イオン化傾向の異なる二種の
金属により形成された一対の電極と、これらの電極間を
流れる電流を増幅する増幅器と、この増幅器の出力が所
定レベルを越えると出力を生ずるレベル検出回路と、レ
ベル検出回路の出力で作動する警報装置と、前記電極に
流れる電流を制御する電流制御回路と、手動操作される
スイッチとを設け、このスイッチを操作した後、一定時
間の間のみ、前記電流制御回路を通じて前記電極間にガ
ルバノ電流を流す回路構成を有する。Means for solving the 11 points in between
In a corrosion protection detection device that measures the galvano current generated when two types of metals with different ionization tendencies are immersed in a liquid containing a rust preventive agent, a pair of electrodes formed of two types of metals with different ionization tendencies are used. , an amplifier that amplifies the current flowing between these electrodes, a level detection circuit that generates an output when the output of this amplifier exceeds a predetermined level, an alarm device that is activated by the output of the level detection circuit, and a current that flows between the electrodes. A current control circuit for controlling the current control circuit and a manually operated switch are provided, and after the switch is operated, a galvano current is caused to flow between the electrodes through the current control circuit only for a certain period of time.
土■
スイッチを手動操作した後一定時間のみｆｆ１ｍにガル
バノ電流を発生させ、防食性の測定を行い、一定時間経
過後は、ガルバノ電流の発生を阻止する。Soil ■ After manual operation of the switch, galvano current is generated at ff1m for a certain period of time to measure corrosion resistance, and after the elapse of a certain period of time, generation of galvano current is blocked.
実施例
以下、この発明の実施例を第１図ないし第４図について
説明する。これらの図面では、第５図に示す部分と同一
の部分は同一符号を付し、説明を省略する。EXAMPLE Hereinafter, an example of the present invention will be explained with reference to FIGS. 1 to 4. In these drawings, parts that are the same as those shown in FIG. 5 are designated by the same reference numerals, and explanations thereof will be omitted.
第１図に示すように、この発明の防錆剤を含有する液体
の防食性検出回路は、電極１．２間を流れる電流を増幅
する増幅器７と、増幅器７の出力が所定レベルを越える
と警報出力を生ずるレベル検出回路８と、レベル検出回
路の警報出力で作動される警報装置４と、電極１．２に
流れる電流を制御する電流制御回路９とを有する。一対
の電極１．２のうち、アノードは、イオン化傾向の高い
金属例えば、亜鉛、アルミニウム又は鉄等の金属で形成
され、カソードは、イオン化傾向の低い金属例えば白金
等で形成される。As shown in FIG. 1, the anticorrosion detection circuit for a liquid containing a rust preventive agent of the present invention includes an amplifier 7 that amplifies the current flowing between the electrodes 1 and 2, and an amplifier 7 that amplifies the current flowing between the electrodes 1 and 2. It has a level detection circuit 8 that generates an alarm output, an alarm device 4 that is activated by the alarm output of the level detection circuit, and a current control circuit 9 that controls the current flowing through the electrode 1.2. Of the pair of electrodes 1.2, the anode is made of a metal with a high ionization tendency, such as zinc, aluminum or iron, and the cathode is made of a metal with a low ionization tendency, such as platinum.
電流制御回路９は、第２図に示すように、ゲート素子と
してのトランジスタ１ｏと、手動操作されるスイッチ１
１が操作された時、一定時間の間、ダイオードを通じて
トランジスタ１０に作動信号を供給するタイマ回路１２
を有する。スイッチ１１は、電源６に接続された自動車
のイグニッションスイッチである６増幅器７の出力は、
そのレベルを表示する指針表示装置１４及びレベル検出
回路８に与えられる。As shown in FIG. 2, the current control circuit 9 includes a transistor 1o as a gate element and a manually operated switch 1.
1 is operated, a timer circuit 12 supplies an activation signal to the transistor 10 through the diode for a certain period of time;
has. The switch 11 is an automobile ignition switch connected to the power source 6. The output of the amplifier 7 is:
The signal is applied to a pointer display device 14 that displays the level and a level detection circuit 8.
レベル検出回路８は、シュミットトリガ回路で構成され
、一方の入力端子に印加される増幅器７の出力と他方の
入力端子に印加される一定電圧とを比較し、増幅器７の
出力が上記一定電圧より高いとき出力を発生する比較器
１５と、比較器１５の出力で警報装置４への出力を保持
する自己保持回路１６とを有する。上記比較器１５の他
方の入力端子には、可変抵抗を含む複数の抵抗で構成さ
れた分圧器１３により設定された一定レベルの電圧が印
加される。自己保持回路１６は、比較器１５の出力が与
えられるベースを有するトランジスタ１７と、トランジ
スタ１７のコレクタに接続されたベースを有するトラン
ジスタ１８とをイアする。The level detection circuit 8 is composed of a Schmitt trigger circuit, and compares the output of the amplifier 7 applied to one input terminal with a constant voltage applied to the other input terminal, so that the output of the amplifier 7 is higher than the constant voltage. It has a comparator 15 that generates an output when it is high, and a self-holding circuit 16 that holds the output of the comparator 15 to the alarm device 4. The other input terminal of the comparator 15 is applied with a voltage at a constant level set by a voltage divider 13 made up of a plurality of resistors including a variable resistor. The self-holding circuit 16 isolates a transistor 17 having a base to which the output of the comparator 15 is applied, and a transistor 18 having a base connected to the collector of the transistor 17.
トランジスタ１７のエミッタは接地され、１−ランジス
タ１８のコレクタは、ダイオード２２を介してトランジ
スタ１７のベースに接続されろ。また、トランジスタ１
８のエミッタは、抵抗１９を通じてスイッチ１１に接続
され、コレクタは、警報装置４の発光ダイオード２０と
抵抗２１を通じて接地される。The emitter of transistor 17 is grounded, and the collector of transistor 18 is connected to the base of transistor 17 via diode 22. Also, transistor 1
The emitter of 8 is connected to the switch 11 through a resistor 19, and the collector is grounded through a light emitting diode 20 of the alarm device 4 and a resistor 21.
上記構成において、使用時に、スイッチ１１を手動でオ
ンにすると、タイマ回路１２は、ワンショットマルチバ
イブレータを有し、入力電圧の立上りにより所定時間間
隔の出力パルスを発生して、トランジスタ１０をオンに
する。タイマ回路１２の出力を発生する時間間隔は、ト
ランジスタ１０を通じて液体内に浸漬した一対の電極１
．２間にガルバノ電流が流れ始め、この電流が定常レベ
ルに達するのに必要な時間で、約０．５〜３秒である。In the above configuration, when the switch 11 is manually turned on during use, the timer circuit 12, which has a one-shot multivibrator, generates output pulses at predetermined time intervals according to the rise of the input voltage, and turns on the transistor 10. do. The time interval for generating the output of the timer circuit 12 is determined by the time interval between the pair of electrodes 1 immersed in the liquid through the transistor 10.
．． The time required for the galvano current to start flowing between the two and for this current to reach a steady level is approximately 0.5 to 3 seconds.
しかし、この時間間隔は、測定条件に応じて当業者が適
宜設定する値である。この時間が経過した後は、タイマ
回路１２は、出力を停止するので、トランジスタ１０が
オフとなり、電極１，２間にガルバノ電流は生じない。However, this time interval is a value appropriately set by a person skilled in the art depending on the measurement conditions. After this time has elapsed, the timer circuit 12 stops outputting, so the transistor 10 is turned off and no galvano current is generated between the electrodes 1 and 2.
発生したガルバノ電流は、増幅器７により増幅されてレ
ベル検出回路８を構成する比較器１５の一方の端子に供
給される。防食性が低下していると、電極１．２のうち
、亜鉛又はアルミニウム等の金属で形成されたアノード
は、液体内に多伝に溶出し、電極１．２間に大きなガル
バノ電流が発生する。比較器１５の一方の端子に供給さ
れる増幅器７の出力レベルが分圧器１３で設定されたレ
ベル以上であると、比較器１５は出力を生じ、トランジ
スタ１７がオンとなる。このとき、トランジスタ１８の
ベースが接地電圧になるため、トランジスタ１８もオン
となり１発光ダイオード２０が点灯し、使用者に対し、
防食性が低下していることを警告する。トランジスタ１
８がオンになると、そのコレクタ及びダイオード２２を
通じてトランジスタ１７のベースに電流が供給され、ト
ランジスタ１７と１８は、スイッチ１１がオフになるま
で、導通状態を自己保持する。The generated galvano current is amplified by an amplifier 7 and supplied to one terminal of a comparator 15 forming a level detection circuit 8 . If the corrosion resistance is reduced, the anode formed of metal such as zinc or aluminum among the electrodes 1.2 will be dissolved into the liquid, and a large galvano current will be generated between the electrodes 1.2. . When the output level of the amplifier 7 supplied to one terminal of the comparator 15 is equal to or higher than the level set by the voltage divider 13, the comparator 15 produces an output and the transistor 17 is turned on. At this time, the base of the transistor 18 becomes the ground voltage, so the transistor 18 is also turned on and one light emitting diode 20 lights up, giving the user a
Warns that corrosion protection has deteriorated. transistor 1
When 8 is turned on, current is supplied to the base of transistor 17 through its collector and diode 22, and transistors 17 and 18 self-maintain conduction until switch 11 is turned off.
第３図は、この発明の防食性検出装置を使用して電極１
，２間を流れるガルバノ電流（μＡ）と腐食減量（ｍｇ
／ｃｍ）との関係を示す。この図から明かなように、安
全域Ａは、ガルバノ電流が約４０μＡ以下、注意域Ｂは
、約４０〜６０μ八で、危険域Ｃは、約６０μＡ以上で
あることが理解できる。第４図では、アノードとしてア
ルミニウム、鉄及び亜鉛を使用した例をそれぞれＡ１、
Ｆｅ及びＺｎで示す。FIG. 3 shows electrode 1 using the anti-corrosion detection device of the present invention.
, galvano current flowing between 2 (μA) and corrosion loss (mg
/cm). As is clear from this figure, it can be understood that the safe area A is a galvano current of about 40 μA or less, the caution area B is about 40 to 60 μA, and the dangerous area C is about 60 μA or more. In Figure 4, examples using aluminum, iron, and zinc as anodes are shown in A1 and A1, respectively.
Indicated by Fe and Zn.
この発明の上記実施例は、種々の変更が可能である。例
えば、第４図に示すように、スイッチ１１として３接点
スイッチを使用できる。通常は。The above-described embodiments of the invention can be modified in various ways. For example, as shown in FIG. 4, a three-contact switch can be used as the switch 11. Normally.
スイッチ１１は、接点２５と２７とを接続し、電源２８
からコンデンサ２９に電流を供給し、コンデンサ２９を
充電する。防食性を測定するときスイッチ１１を接点２
５がら２６に切り換えて、トランジスタ３０にベース電
流を供給し、コンデンサ２９が一定レベルまで放電する
間、トランジスタ；３０をオン状態に保持し、トランジ
スタ３０のコレクタ・エミッタ間を通じて端子３１がら
トランジスタ１０にベース電流を供給してもよい。Switch 11 connects contacts 25 and 27 and connects power supply 28.
A current is supplied from the capacitor 29 to the capacitor 29, and the capacitor 29 is charged. When measuring corrosion resistance, switch 11 is connected to contact 2.
5 to 26, the base current is supplied to the transistor 30, and while the capacitor 29 is discharged to a certain level, the transistor 30 is kept in the on state, and the terminal 31 is connected to the transistor 10 through the collector-emitter of the transistor 30. A base current may also be supplied.
上記実施例では、ゲート素子として、２個のトランジス
タを使用する例を示したが、トランジスタは１個でも良
く、またリレーを使用できることも理解されよう。タイ
マ回路１２が出力を発生する間、ゲート素子がオンする
ように、サイリスタも使用できる。同様に、自己保持回
路１６は、トランジスタの替わりに、サイリスタを使用
し１．そのゲートに比較器１５の短いパルス幅の出力を
印加することができる。In the above embodiment, an example is shown in which two transistors are used as the gate element, but it will be understood that the number of transistors may be one, and it is also possible to use a relay. A thyristor may also be used so that the gate element is turned on while timer circuit 12 produces an output. Similarly, the self-holding circuit 16 uses a thyristor instead of a transistor.1. The short pulse width output of comparator 15 can be applied to its gate.
発明の効果
この発明の防錆剤を含有する液体の防食性検出回路は、
スイッチを手り＋ｍ作した後一定時間のみ電極にガルバ
ノ電流を発生させ、防食性の測定を行い、一定時間経過
後は、ガルバノ電流の発生を阻止する電流制御回路を設
けたので、電極、特にアノード電極が長時間電食されず
、電極の碍命を長くかつ防食性測定精度を高いレベルに
保持することができる。Effects of the Invention The anti-corrosion detection circuit for a liquid containing a rust preventive agent according to the present invention has the following features:
After the switch was manually operated, a galvano current was generated in the electrode for a certain period of time to measure corrosion resistance.After a certain period of time, a current control circuit was installed to prevent the generation of galvano current. The anode electrode is not electrolytically corroded for a long time, and the life of the electrode can be extended and the accuracy of corrosion resistance measurement can be maintained at a high level.
この発明の防錆剤を含有する液体の防食性検出回路を作
成して防食性検出装置を作ると共に、同様の保ぶ回路の
無い従来の防食性検出装置と比較した耐久性試験を行っ
た。その結果、従来の装置では、約１′Ｍ間後に電極の
電食が大きく進行したのに対し、この発明の保護回路を
有する装置では。A corrosion protection detection circuit for a liquid containing the rust preventive of the present invention was created to produce a corrosion protection detection device, and a durability test was conducted to compare it with a conventional corrosion protection detection device that does not have a similar circuit. As a result, in the conventional device, electrolytic corrosion of the electrodes significantly progressed after about 1'M, whereas in the device having the protection circuit of the present invention.
３週間以上経過した後、電極に発生する電食が僅かに認
められた。After more than 3 weeks, a slight amount of electrolytic corrosion was observed on the electrodes.
第１図は、この発明による防錆剤を含有する液体の防食
性検出回路の回路図、第２図は、第１図の回路に使用す
る電流制御回路の回路図、第３図は、電極を流れるガル
バノ電流とＭ食減量との関係を示すグラフ、第４図は、
第２図に示す電流制御回路の他の実施例を示す回路図、
第５図は、従来の防食性検出回路の略示回路図である。
１．２．、電極、 ７０．増幅器、 ８０．レベル検出
回路、 ９０．電流制御回路、 １ｏ、。
トランジスタ（ゲート素子）、 １１０．スイッチ、
１２１．タイマ回路、１３．、分圧器、１４０．指
針表示装置、 １５０．比較器、 １６０．自己保持
回路、 １７．１８．、トランジスタ、 ２０００
発光ダイオード、
ゝ・？＼
Ｉ
ン
第１図
第２図
、２９
第３図
ガルバノ電流 （μＡ）
第４図
■
第５図
］ ＺFig. 1 is a circuit diagram of a corrosion protection detection circuit for a liquid containing a rust preventive agent according to the present invention, Fig. 2 is a circuit diagram of a current control circuit used in the circuit of Fig. 1, and Fig. 3 is an electrode Figure 4 is a graph showing the relationship between the galvanic current flowing through the M diet and the weight loss of the M diet.
A circuit diagram showing another embodiment of the current control circuit shown in FIG. 2,
FIG. 5 is a schematic circuit diagram of a conventional corrosion protection detection circuit. 1.2. , electrode, 70. amplifier, 80. Level detection circuit, 90. Current control circuit, 1o. Transistor (gate element), 110. switch,
121. Timer circuit, 13. , voltage divider, 140. Pointer display device, 150. Comparator, 160. Self-holding circuit, 17.18. , Transistor, 2000
Light emitting diode, ゝ・? ＼ I N Figure 1 Figure 2, 29 Figure 3 Galvano current (μA) Figure 4■ Figure 5] Z
Claims (5)
二種の金属を浸漬したときに発生するガルバノ電流を測
定する防食性検出装置において、イオン化傾向の異なる
二種の金属により形成された一対の電極と、該電極間を
流れる電流を増幅する増幅器と、該増幅器の出力が所定
レベルを越えると出力を生ずるレベル検出回路と、該レ
ベル検出回路の出力で作動する警報装置と、前記電極に
流れる電流を制御する電流制御回路と、手動操作される
スイッチとを設け、該スイッチを操作した後、一定時間
の間のみ、前記電流制御回路を通じて前記電極間にガル
バノ電流を流すことを特徴とする防錆剤を含有する液体
の防食性検出回路。(1) In a corrosion protection detection device that measures the galvano current generated when two types of metals with different ionization tendencies are immersed in a liquid containing a rust preventive, a a pair of electrodes, an amplifier that amplifies the current flowing between the electrodes, a level detection circuit that produces an output when the output of the amplifier exceeds a predetermined level, an alarm device that is activated by the output of the level detection circuit, and the electrodes. A current control circuit for controlling the current flowing through the electrode and a manually operated switch are provided, and after the switch is operated, a galvano current is caused to flow between the electrodes through the current control circuit only for a certain period of time. Anti-corrosion detection circuit for liquids containing anti-rust agents.
接続されたゲート素子と、上記スイッチを操作したとき
、前記ゲート素子に作動信号を供給するタイマ回路とを
有する特許請求の範囲第（１）項記載の防錆剤を含有す
る液体の防食性検出回路。(2) The current control circuit includes a gate element connected between the electrode and the amplifier, and a timer circuit that supplies an activation signal to the gate element when the switch is operated. (1) A corrosion protection detection circuit for a liquid containing the rust preventive agent described in item (1).
れる上記増幅器の出力と他方の入力端子に印加される一
定電圧とを比較し、上記増幅器の出力が上記一定電圧よ
り高いとき出力を発生する比較器と、該比較器の出力で
上記警報装置への出力を保持する自己保持回路とを有す
る特許請求の範囲第（１）項記載の防錆剤を含有する液
体の防食性検出回路。(3) The level detection circuit compares the output of the amplifier applied to one input terminal with a constant voltage applied to the other input terminal, and outputs an output when the output of the amplifier is higher than the constant voltage. A circuit for detecting corrosion resistance of a liquid containing a rust preventive agent according to claim (1), comprising a comparator that generates a signal, and a self-holding circuit that maintains the output of the comparator to the alarm device. .
チである特許請求の範囲第（１）項記載の防錆剤を含有
する液体の防食性検出回路。(4) The anti-corrosion detection circuit for a liquid containing a rust preventive agent according to claim (1), wherein the switch is an ignition switch for an automobile.
を構成する上記スイッチから電流が供給される特許請求
の範囲第（３）項記載の防錆剤を含有する液体の防食性
検出回路。(5) The anti-corrosion detection circuit for a liquid containing a rust preventive agent according to claim (3), wherein the self-holding circuit is supplied with current from the switch constituting an ignition switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61151778A JPH0758277B2 (en) | 1986-06-30 | 1986-06-30 | Anticorrosion detector for liquid containing rust preventive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61151778A JPH0758277B2 (en) | 1986-06-30 | 1986-06-30 | Anticorrosion detector for liquid containing rust preventive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS638549A true JPS638549A (en) | 1988-01-14 |
| JPH0758277B2 JPH0758277B2 (en) | 1995-06-21 |
Family
ID=15526091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61151778A Expired - Lifetime JPH0758277B2 (en) | 1986-06-30 | 1986-06-30 | Anticorrosion detector for liquid containing rust preventive |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0758277B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015181859A1 (en) * | 2014-05-30 | 2015-12-03 | 都市拡業株式会社 | Reforming-water-antirust-effect determination device and reforming-water-antirust-effect determination method |
| WO2017064754A1 (en) * | 2015-10-13 | 2017-04-20 | 都市拡業株式会社 | Reformed water rust-prevention-effect determination device and reformed water rust-prevention-effect determination method |
| US10175189B2 (en) | 2016-03-30 | 2019-01-08 | Toshikogyo Co., Ltd. | Determination device for determining an improvement in water quality |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57211052A (en) * | 1981-06-22 | 1982-12-24 | Fujitsu Ltd | Detecting apparatus for abnormality in process of anodic oxidation |
| JPS6038383U (en) * | 1983-08-12 | 1985-03-16 | 住友精密工業株式会社 | air cooled heat exchanger |
-
1986
- 1986-06-30 JP JP61151778A patent/JPH0758277B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57211052A (en) * | 1981-06-22 | 1982-12-24 | Fujitsu Ltd | Detecting apparatus for abnormality in process of anodic oxidation |
| JPS6038383U (en) * | 1983-08-12 | 1985-03-16 | 住友精密工業株式会社 | air cooled heat exchanger |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015181859A1 (en) * | 2014-05-30 | 2015-12-03 | 都市拡業株式会社 | Reforming-water-antirust-effect determination device and reforming-water-antirust-effect determination method |
| WO2017064754A1 (en) * | 2015-10-13 | 2017-04-20 | 都市拡業株式会社 | Reformed water rust-prevention-effect determination device and reformed water rust-prevention-effect determination method |
| US10175189B2 (en) | 2016-03-30 | 2019-01-08 | Toshikogyo Co., Ltd. | Determination device for determining an improvement in water quality |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0758277B2 (en) | 1995-06-21 |
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