JPH06281565A - Absorbance type analyzer - Google Patents
Absorbance type analyzerInfo
- Publication number
- JPH06281565A JPH06281565A JP7015393A JP7015393A JPH06281565A JP H06281565 A JPH06281565 A JP H06281565A JP 7015393 A JP7015393 A JP 7015393A JP 7015393 A JP7015393 A JP 7015393A JP H06281565 A JPH06281565 A JP H06281565A
- Authority
- JP
- Japan
- Prior art keywords
- cell
- cleaning
- solenoid valve
- solution
- cleaning liquid
- 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.)
- Pending
Links
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
- Optical Measuring Cells (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、被測定溶液を透過する
光の強度を測定し、被測定溶液の分析を行う吸光度式分
析計に関し、更に詳しくは、汚れた測定セルの内壁に洗
浄液を噴射し、測定セルの汚れを自動洗浄することので
きる吸光度式分析計に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorbance type analyzer for measuring the intensity of light passing through a solution to be measured and analyzing the solution to be measured, and more specifically, to a cleaning liquid on the inner wall of a dirty measuring cell. The present invention relates to an absorbance type analyzer capable of jetting and automatically cleaning dirt on a measuring cell.
【０００２】[0002]
【従来の技術】図６は、従来の吸光度式分析計の構成図
である。図中、１は光路面にガラス窓１Ａを有したセル
で、被測定溶液ＳL0が流入口１Ｂから供給され、排出口
１Ｃから排出される。２はランプ３の光を平行光束にす
るレンズである。レンズ２からセル１に出射された光
は、検出器４で強度が測定され、電気信号に変換されて
から測定回路５に伝達される。測定回路５は、検出器４
から入力した電気信号に基づいて演算処理を行い、被測
定溶液ＳL0に関して濁度等の特性を得る。2. Description of the Related Art FIG. 6 is a block diagram of a conventional absorbance type analyzer. In the figure, 1 is a cell having a glass window 1A on the optical path surface, and a solution to be measured S L0 is supplied from an inlet 1B and discharged from an outlet 1C. Reference numeral 2 is a lens for converting the light of the lamp 3 into a parallel light flux. The intensity of the light emitted from the lens 2 to the cell 1 is measured by the detector 4, converted into an electric signal, and then transmitted to the measurement circuit 5. The measuring circuit 5 is a detector 4
A calculation process is performed on the basis of the electric signal input from to obtain characteristics such as turbidity of the measured solution S L0 .
【０００３】[0003]
【発明が解決しようとする課題】このような従来の吸光
度式分析計は、被測定溶液によって測定セルの内壁に生
じた汚れを落とすために、被測定溶液を排出した後、セ
ル窓を取り外して清掃しなければならず、清掃に多大な
時間が必要になるという欠点を有していた。In order to remove the dirt generated on the inner wall of the measuring cell by the solution to be measured, such a conventional absorbance type analyzer is designed to discharge the solution to be measured and then remove the cell window. It had a drawback that it had to be cleaned and required a lot of time for cleaning.
【０００４】本発明は、このような点に鑑みてなされた
もので、測定セルの汚れ具合に応じ、測定セルの内壁を
洗浄液を噴射して洗浄するようにしたもので、清掃に多
大な時間を必要とせず、且つ、最小限の洗浄液の量で測
定セルの洗浄を行うことのできる吸光度式分析計を提供
することを目的としている。The present invention has been made in view of the above point, and is designed to inject the cleaning liquid onto the inner wall of the measuring cell to clean the inner wall of the measuring cell according to the degree of contamination of the measuring cell. It is an object of the present invention to provide an absorbance type analyzer that does not require the above and can wash the measurement cell with a minimum amount of the washing solution.
【０００５】[0005]
【課題を解決するための手段】このような目的を達成す
るために、本発明は、測定セルに入れられた被測定溶液
を透過する光の強度を測定して被測定溶液の分析を行う
吸光度式分析計において、前記透過光が通過する測定セ
ルの内壁を洗浄液を噴射して洗浄する洗浄手段と、この
洗浄手段によって内壁を洗浄した後に、前記測定セルを
基準水で満たす基準水供給手段と、前記基準水が満たさ
れた測定セルを透過する透過光に基づいて測定セルの汚
れを判断し、前記洗浄手段から噴射する洗浄液を制御す
る制御手段と、を設けたことを特徴としている。In order to achieve such an object, the present invention is to measure the intensity of light passing through a solution to be measured contained in a measuring cell to analyze the solution to be measured. In the analyzer, a cleaning unit that sprays a cleaning liquid on the inner wall of the measurement cell through which the transmitted light passes, and a reference water supply unit that fills the measurement cell with reference water after cleaning the inner wall by the cleaning unit. And a control unit that determines the contamination of the measurement cell based on the transmitted light that passes through the measurement cell filled with the reference water and controls the cleaning liquid sprayed from the cleaning unit.
【０００６】[0006]
【作用】制御手段は、基準水が満たされた測定セルを透
過する透過光に基づいて測定セルの汚れを判断し、汚れ
の度合いに応じて洗浄周期を決定する。洗浄手段は、制
御手段のバルブ制御信号に基づいてオン／オフ制御さ
れ、洗浄周期毎に洗浄液を測定セルの内壁に噴射して測
定セルを洗浄する。The control means determines the contamination of the measurement cell based on the transmitted light that passes through the measurement cell filled with the reference water, and determines the cleaning cycle according to the degree of contamination. The cleaning means is on / off controlled based on the valve control signal of the control means, and cleans the measurement cell by injecting a cleaning liquid onto the inner wall of the measurement cell at each cleaning cycle.
【０００７】[0007]
【実施例】以下、図面を用いて本発明の一実施例を詳細
に説明する。図１は、本発明の吸光度式分析計の一実施
例を示した構成図である。図中、１０光源であるラン
プ、１１はランプ１０からの光を平行光束にする第１の
レンズ、１２は絞りで、第１のレンズ１１から出射され
た平行光束を適正な光束径ｄに絞る。１３は測定セル、
１４は測定セル１３のガラス窓１３Ａを洗浄する洗浄液
ＳL1を供給する洗浄手段で、一対のノズル１４Ａがガラ
ス窓１３Ａに向いて設けられている。An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a configuration diagram showing an embodiment of the absorbance analyzer of the present invention. In the figure, 10 is a lamp which is a light source, 11 is a first lens for collimating the light from the lamp 10 into a parallel light flux, and 12 is a diaphragm, which narrows the parallel light flux emitted from the first lens 11 to an appropriate light flux diameter d. . 13 is a measuring cell,
Reference numeral 14 is a cleaning means for supplying a cleaning liquid S L1 for cleaning the glass window 13A of the measurement cell 13, and a pair of nozzles 14A are provided facing the glass window 13A.
【０００８】ノズル１４Ａは、平行光束が通過する光路
から外れた位置、即ち、測定セル１３内に距離δ突き出
した位置に設けられていて、被測定溶液ＳL0を透過する
光を遮らないようになっている。１５は第２のレンズ
で、測定セル１３を透過した平行光束を検出器１６に結
像する。１７は測定回路で、検出器１６から入力した検
出信号Ｄiに基づいて、被測定溶液ＳL0に関する濁度／
色度等のデータを得る。The nozzle 14A is provided at a position deviated from the optical path through which the parallel light flux passes, that is, at a position projecting a distance δ into the measurement cell 13 so as not to block the light passing through the solution S L0 to be measured. Has become. Reference numeral 15 is a second lens, which forms an image on the detector 16 of the parallel light flux that has passed through the measurement cell 13. Reference numeral 17 denotes a measurement circuit, which is based on the detection signal D i input from the detector 16 and is based on the turbidity of the measured solution S L0.
Obtain data such as chromaticity.
【０００９】尚、この実施例では、基準水ＳL2を供給す
る基準水供給手段は、洗浄水を測定セルに供給する洗浄
手段１４と共通化されていて、この測定セルに供給する
基準水ＳL2は、一般にいうところの純水で、透明度の高
い水が用いられている。更に、被測定溶液ＳL0も同じ洗
浄手段１４から測定セル１３に供給される。In this embodiment, the reference water supply means for supplying the reference water S L2 is shared with the cleaning means 14 for supplying the cleaning water to the measurement cell, and the reference water S supplied to the measurement cell is used. L2 is generally pure water, which is highly transparent. Further, the solution to be measured S L0 is also supplied to the measurement cell 13 from the same cleaning means 14.
【００１０】Ｖ1は被測定溶液ＳL0の供給ラインＡに設
けられた電磁弁、Ｖ2は基準水ＳL2の供給ラインＢに設
けられた電磁弁、Ｖ3は洗浄水ＳL1の供給ラインＣに設
けられた電磁弁、Ｖ4は排出ラインＤに設けられた電磁
弁、Ｎ1〜Ｎ3は流量を制御するバルブである。電磁弁Ｖ
1〜Ｖ4及びバルブＮ1〜Ｎ3は、コントロールユニット
（以下、制御手段という）１８によって制御され、測定
セルに供給される溶液及び流量が選択制御される。V 1 is a solenoid valve provided on the supply line A of the measured solution S L0 , V 2 is a solenoid valve provided on the supply line B of the reference water S L2 , and V 3 is a supply line of the cleaning water S L1 . An electromagnetic valve provided at C, V 4 is an electromagnetic valve provided at the discharge line D, and N 1 to N 3 are valves for controlling the flow rate. Solenoid valve V
1 to V 4 and valves N 1 to N 3 are controlled by a control unit (hereinafter, referred to as control means) 18, and the solution and flow rate supplied to the measurement cell are selectively controlled.
【００１１】電磁弁Ｖ1が開かれると、被測定溶液ＳL0
は、バルブＮ1で調整された流量でノズル１４Ａから測
定セル１３に供給され、排出口１３Ｂから排出される。
測定セル１３の洗浄は、電磁弁Ｖ1を閉めてから電磁弁
Ｖ4を開き、排出ラインＤより被測定溶液ＳL0を排出し
た後、電磁弁Ｖ3を開きノズル１４Ａに洗浄液ＳL 1を供
給することで行われる。測定セル１３の洗浄は、既に、
被測定溶液ＳL0が排出されているので、洗浄が効率良く
行われる。When the solenoid valve V 1 is opened, the solution to be measured S L0
Is supplied from the nozzle 14A to the measurement cell 13 at a flow rate adjusted by the valve N 1 , and is discharged from the discharge port 13B.
To clean the measurement cell 13, after closing the solenoid valve V 1 , open the solenoid valve V 4 , discharge the solution to be measured S L0 from the discharge line D, then open the solenoid valve V 3 to supply the cleaning liquid S L 1 to the nozzle 14A. It is done by supplying. Cleaning of the measuring cell 13 has already been completed.
Since the measured solution S L0 has been discharged, the cleaning is efficiently performed.
【００１２】この洗浄プロセスは、供給ラインＢから基
準水ＳL2が測定セル１３に供給されて測定セル１３の汚
れの程度が測定された結果に基づき、汚れ度合いに応じ
て行われる。尚、被測定溶液ＳL0が汚れの少ない水の場
合は、被測定溶液ＳL0をフィルタ１９で濾過して基準水
ＳL2として用い、洗浄水ＳL1はバルブＮ3で被測定溶液
ＳL0を昇圧して用いてもよい。This cleaning process is carried out according to the degree of contamination, based on the result of measuring the degree of contamination of the measuring cell 13 by supplying the reference water S L2 from the supply line B to the measuring cell 13. When the measured solution S L0 is water with little contamination, the measured solution S L0 is filtered by the filter 19 and used as the reference water S L2 , and the washing water S L1 is the valve N 3 and the measured solution S L0 is the measured solution S L0 . It may be used after being boosted.
【００１３】図２は、本発明の制御手段を抽出して示し
た構成ブロック図で、測定セルに供給した基準水ＳL2に
よって得た検出信号Ｄi（ｉ＝０〜ｎ）から洗浄周期Ｔi
（ｉ＝０〜ｎ）を設定する場合を例にあげて説明したも
のである。図中、１８1は洗浄周期制御部で、Ａ／Ｄ変
換器でデジタル変換された検出器１６の検出信号Ｄiに
基づき、洗浄周期Ｔiを周期タイマ１８2に設定する。FIG. 2 is a block diagram showing the control means of the present invention in an extracted form. The cleaning cycle T is calculated from the detection signal D i (i = 0 to n) obtained by the reference water S L2 supplied to the measuring cell. i
This is described by taking the case of setting (i = 0 to n) as an example. In the figure, reference numeral 18 1 denotes a cleaning cycle control unit which sets the cleaning cycle T i in the cycle timer 18 2 based on the detection signal D i of the detector 16 which is digitally converted by the A / D converter.
【００１４】１８3は最初の洗浄周期Ｔ0が記憶された第
１のメモリ、１８4は検出器１６から入力された検出信
号Ｄiを記憶する第２のメモリで、洗浄毎に検出信号Ｄi
が更新される。洗浄周期制御部１８1は、動作開始と同
時に最初の洗浄周期Ｔ0を周期タイマ１８2に設定し、２
度目からは、第２のメモリ１８4に記憶された検出信号
Ｄiと続いて入力される検出信号Ｄi+1との差ΔＤi+1を
得、その変化量に基づいて時間テーブル１８5から選択
した洗浄周期Ｔiを周期タイマ１８2に設定する。Reference numeral 18 3 is a first memory in which the first cleaning cycle T 0 is stored, and reference numeral 18 4 is a second memory in which a detection signal D i input from the detector 16 is stored. i
Will be updated. The cleaning cycle control unit 18 1 sets the first cleaning cycle T 0 to the cycle timer 18 2 at the same time when the operation is started, and 2
From the fourth time, the difference ΔD i + 1 between the detection signal D i stored in the second memory 18 4 and the subsequently input detection signal D i + 1 is obtained, and the time table 18 5 is obtained based on the change amount. The cleaning cycle T i selected from is set in the cycle timer 18 2 .
【００１５】周期タイマ１８2は、設定時間がタイムア
ウトするとシーケンス制御部１８6に制御信号Ｓ1を出力
する。シーケンス制御部１８6は、周期タイマ１８2から
入力した制御信号Ｓ1に基づき、所定のシーケンスに従
ってバルブ制御信号Ｓ2〜Ｓ5を各バルブＶ1〜Ｖ4に出力
する。各バルブＶ1〜Ｖ4は、シーケンス制御部１８6から
入力したバルブ制御信号Ｓ2〜Ｓ5に基づいてオン／オフ
制御される。The cycle timer 18 2 outputs a control signal S 1 to the sequence controller 18 6 when the set time has timed out. Sequence controller 18 6, based on the control signals S 1 inputted from the cycle timer 18 2, and outputs a valve control signal S 2 to S 5 in the valve V 1 ~V 4 according to a predetermined sequence. Each valve V 1 ~V 4 is turned on / off controlled based on the valve control signal S 2 to S 5 inputted from the sequence controller 18 6.
【００１６】図３は、測定セルの汚れの変化を示した図
で、横軸に経過時間を示し、縦軸に検出信号を示したも
のである。尚、図中の破線は、洗浄動作を行わない場合
の検出信号の低下の様子を示し、実線は、洗浄動作の効
果を基準水で得られる検出信号をもって示したものであ
る。Ｄ0は動作開始前の検出信号、Ｄ1は最初の洗浄が行
われる前の検出信号、Ｄ2は２回目の洗浄が行われる前
の検出信号である。尚、ｎ回目の洗浄が行われる前に検
出信号Ｄnが一定基準以下になった時は、測定セル１３
は、従来の方法によって洗浄が行われる。FIG. 3 is a diagram showing changes in the contamination of the measuring cell, in which the abscissa indicates the elapsed time and the ordinate indicates the detection signal. The broken line in the figure shows how the detection signal drops when the cleaning operation is not performed, and the solid line shows the effect of the cleaning operation with the detection signal obtained with the reference water. D 0 is a detection signal before the operation is started, D 1 is a detection signal before the first cleaning is performed, and D 2 is a detection signal before the second cleaning is performed. When the detection signal D n falls below a certain standard before the n-th cleaning is performed, the measuring cell 13
Are washed by conventional methods.
【００１７】洗浄周期制御部１８1は、第２のメモリ１
８4に記憶した検出信号Ｄn-1と続いて入力される検出信
号Ｄnとの差ΔＤn（ΔＤn＝Ｄn−Ｄn-1）を得て、その
変化量ΔＤnに基づいて時間テーブル１８5から適正な洗
浄周期Ｔnを選択する。洗浄周期Ｔnは、前回の洗浄周期
Ｔn-1で検出信号の減衰がΔＤn-1の時、次式のようにな
る。 Ｔn＝（Ｔn-1／ΔＤn-1）×α ここでαは所定の係数である。The cleaning cycle control unit 18 1 includes the second memory 1
8 4 to obtain a difference ΔD n (ΔD n = D n -D n-1) of the detection signal D n that the stored detection signal D n-1 and subsequently inputted, based on the amount of change [Delta] D n An appropriate cleaning cycle T n is selected from the time table 18 5 . The cleaning cycle T n is expressed by the following equation when the attenuation of the detection signal is ΔD n-1 in the previous cleaning cycle T n-1 . T n = (T n-1 / ΔD n-1 ) × α where α is a predetermined coefficient.
【００１８】次に本発明の吸光度式分析計の動作をタイ
ムチャートをもって説明する。図４は、洗浄周期Ｔを示
したタイムチャート、図５は、洗浄作業の内容を示した
タイムチャートで、（Ａ）は電磁弁Ｖ1の動作状態、
（Ｂ）は電磁弁Ｖ2の動作状態、（Ｃ）は電磁弁Ｖ3の動
作状態、（Ｄ）は電磁弁Ｖ4の動作状態を示している。
洗浄作業は、測定が開始してからＴ0時間後にＴw時間の
間行われ、更にＴ1時間後にＴw時間の洗浄が行われる。
以後、測定セルは、汚れに応じて決定された洗浄周期Ｔ
iで洗浄が行われる。Next, the operation of the absorbance analyzer of the present invention will be described with reference to a time chart. FIG. 4 is a time chart showing the cleaning cycle T, and FIG. 5 is a time chart showing the details of the cleaning work. (A) shows the operating state of the solenoid valve V 1 ,
(B) shows the operating state of the solenoid valve V 2 , (C) shows the operating state of the solenoid valve V 3 , and (D) shows the operating state of the solenoid valve V 4 .
The cleaning operation is performed for T w time after T 0 time from the start of measurement, and further for T w time after T 1 time.
After that, the measuring cell has a cleaning cycle T determined according to the dirt.
Cleaning is performed with i .
【００１９】(1)時刻ｔ1で洗浄動作になると電磁弁Ｖ4
が開かれ、測定セル１３は、排水ラインＤより被測定溶
液ＳL0が排出される。 (2)時刻ｔ2で被測定溶液ＳL0の排出が完了と共に、電磁
弁Ｖ4が閉められ、電磁弁Ｖ2が開かれる。電磁弁Ｖ2が
開かれると、測定セル１３は、供給ラインＢより基準水
ＳL2が供給される。 (3)供給の途中、時刻ｔ3で一時、電磁弁Ｖ4が開かれ
る。これは測定セル１３に残った被測定溶液ＳL0を測定
セル１３内から速やかに排出するためである。(1) When the cleaning operation starts at time t 1 , the solenoid valve V 4
Is opened, and the measurement cell 13 discharges the measured solution S L0 from the drain line D. (2) At time t 2 , the discharge of the solution to be measured S L0 is completed, and the solenoid valve V 4 is closed and the solenoid valve V 2 is opened. When the solenoid valve V 2 is opened, the measuring cell 13 is supplied with the reference water S L2 from the supply line B. (3) During the supply, the solenoid valve V 4 is temporarily opened at time t 3 . This is because the measured solution S L0 remaining in the measuring cell 13 is quickly discharged from the measuring cell 13.
【００２０】(4)時刻ｔ4で電磁弁Ｖ2が閉じられ、基準
水ＳL2の測定が行われる。基準水ＳL2の測定が終了する
と、電磁弁Ｖ4が開かれ、排水ラインＤより基準水ＳL2
が排出される。 (5)排水ラインＤより基準水ＳL2が排出されると、時刻
ｔ5で電磁弁Ｖ3が開かれ、バルブＮ2で、例えば５リッ
トル／minに昇圧された洗浄水ＳL1が供給ラインＣによ
りノズル１４Ａからガラス窓１３Ａにｔj時間噴射され
る。 (6)このようにして、排水と洗浄が交互に行われる。時
刻ｔ6で再び基準水ＳL2が供給ラインＢより測定セル１
３に供給され、時刻ｔ7でゼロ点の校正が行われる。(4) At time t 4 , the solenoid valve V 2 is closed and the reference water S L2 is measured. When the measurement of the reference water S L2 is completed, the solenoid valve V 4 is opened and the reference water S L2 is discharged from the drain line D.
Is discharged. (5) When the reference water S L2 is discharged from the drainage line D, the solenoid valve V 3 is opened at time t 5 , and the cleaning water S L1 whose pressure is increased to, for example, 5 liters / min is supplied to the supply line by the valve N 2. It is jetted by C from the nozzle 14A to the glass window 13A for t j time. (6) In this way, drainage and washing are performed alternately. At time t 6 , the reference water S L2 is again supplied from the supply line B to the measuring cell 1
3 and the zero point is calibrated at time t 7 .
【００２１】(7)ゼロ点の校正が終了すると、電磁弁Ｖ4
が開かれ測定セル１３から基準水ＳL2が排出される。 (8)測定セル１３から基準水ＳL2が排出されると電磁弁
Ｖ4は閉じられ、時刻ｔ8から被測定溶液ＳL0が測定セル
１３に供給される。 このように、本発明では、測定セルの汚れに応じて洗浄
周期を変化しているが、洗浄時間ＴWを変化するように
してもよい。(7) When the zero point calibration is completed, the solenoid valve V 4
Is opened and the reference water S L2 is discharged from the measuring cell 13. (8) When the reference water S L2 is discharged from the measurement cell 13, the solenoid valve V 4 is closed, and the measured solution S L0 is supplied to the measurement cell 13 from time t 8 . As described above, in the present invention, the cleaning cycle is changed according to the contamination of the measuring cell, but the cleaning time T W may be changed.
【００２２】[0022]
【発明の効果】以上、詳細に説明したように本発明の吸
光度式分析計は、測定セルの汚れ具合に応じて汚れた測
定セルの内壁を洗浄液で噴射して洗浄するようにしてい
るので、清掃に多大な時間を必要とせず、且つ、最小限
の洗浄液の量で測定セルの洗浄を行うことができる。As described above in detail, the absorbance analyzer of the present invention is designed to spray the inner wall of a dirty measurement cell with a cleaning liquid according to the degree of dirt of the measurement cell, so that the measurement cell is cleaned. The measurement cell can be cleaned with a minimum amount of cleaning liquid without requiring a large amount of time for cleaning.
【図１】本発明の吸光度式分析計の一実施例を示した構
成図である。FIG. 1 is a configuration diagram showing an embodiment of an absorbance analyzer of the present invention.
【図２】本発明の制御手段を抽出して示した構成ブロッ
ク図である。FIG. 2 is a block diagram showing a configuration in which control means of the present invention is extracted and shown.
【図３】測定セルの汚れの変化を示した図である。FIG. 3 is a diagram showing a change in dirt of a measurement cell.
【図４】本発明の吸光度式分析計の動作のタイムチャー
トで、洗浄周期Ｔを示した図である。FIG. 4 is a time chart of the operation of the absorbance analyzer of the present invention, showing a cleaning cycle T.
【図５】洗浄作業の内容を示したタイムチャートであ
る。FIG. 5 is a time chart showing the content of the cleaning work.
【図６】従来の吸光度式分析計の構成図である。FIG. 6 is a configuration diagram of a conventional absorbance analyzer.
１３ 測定セル １４ 洗浄手段 １４Ａ ノズル １８ 制御手段 １８1 洗浄周期設定部 １８6 シーケンス制御部13 Measuring Cell 14 Cleaning Means 14A Nozzle 18 Controlling Means 18 1 Cleaning Cycle Setting Section 18 6 Sequence Control Section
Claims (1)
する光の強度を測定して被測定溶液の分析を行う吸光度
式分析計において、 前記透過光が通過する測定セルの内壁を洗浄液を噴射し
て洗浄する洗浄手段と、 この洗浄手段によって内壁を洗浄した後に、前記測定セ
ルを基準水で満たす基準水供給手段と、 前記基準水が満たされた測定セルを透過する透過光に基
づいて測定セルの汚れを判断し、前記洗浄手段から噴射
する洗浄液を制御する制御手段と、 を設けたことを特徴とした吸光度式分析計。1. An absorbance analyzer for measuring the intensity of light transmitted through a solution to be measured contained in a measurement cell to analyze the solution to be measured, wherein an inner wall of the measurement cell through which the transmitted light passes is washed with a cleaning liquid. Based on the transmitted light that passes through the reference water supply unit that fills the measurement cell with the reference water after the cleaning unit that sprays and cleans the inner wall by the cleaning unit, and the measurement cell that is filled with the reference water An absorbance analyzer, comprising: a control unit that determines the contamination of the measurement cell and controls the cleaning liquid sprayed from the cleaning unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7015393A JPH06281565A (en) | 1993-03-29 | 1993-03-29 | Absorbance type analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7015393A JPH06281565A (en) | 1993-03-29 | 1993-03-29 | Absorbance type analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06281565A true JPH06281565A (en) | 1994-10-07 |
Family
ID=13423351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7015393A Pending JPH06281565A (en) | 1993-03-29 | 1993-03-29 | Absorbance type analyzer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06281565A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08304270A (en) * | 1995-05-09 | 1996-11-22 | Tokyo Electric Power Co Inc:The | Near-infrared device for spectroscopic analysts |
| JPH0954076A (en) * | 1995-08-17 | 1997-02-25 | Meidensha Corp | Method for washing optical water quality measuring instrument |
| JP2007240181A (en) * | 2006-03-06 | 2007-09-20 | Hitachi High-Tech Science Systems Corp | Medical analyzer |
| JP2008064476A (en) * | 2006-09-04 | 2008-03-21 | Yokogawa Electric Corp | Turbidometer |
| JP2010164421A (en) * | 2009-01-15 | 2010-07-29 | Toshiba Corp | Automatic analysis apparatus |
| JP2015516076A (en) * | 2012-05-04 | 2015-06-04 | エコラボ ユーエスエー インコーポレイティド | Self-cleaning optical sensor |
| JP2015184273A (en) * | 2014-03-26 | 2015-10-22 | 栗田工業株式会社 | Concentration measuring apparatus and cleaning method of the same |
| JP2020046352A (en) * | 2018-09-20 | 2020-03-26 | 栗田工業株式会社 | Aggregation state monitoring sensor |
| CN115156187A (en) * | 2022-08-03 | 2022-10-11 | 安徽建筑大学 | Ultrasonic cleaning reaction kettle cleaning system and method |
-
1993
- 1993-03-29 JP JP7015393A patent/JPH06281565A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08304270A (en) * | 1995-05-09 | 1996-11-22 | Tokyo Electric Power Co Inc:The | Near-infrared device for spectroscopic analysts |
| JPH0954076A (en) * | 1995-08-17 | 1997-02-25 | Meidensha Corp | Method for washing optical water quality measuring instrument |
| JP2007240181A (en) * | 2006-03-06 | 2007-09-20 | Hitachi High-Tech Science Systems Corp | Medical analyzer |
| JP2008064476A (en) * | 2006-09-04 | 2008-03-21 | Yokogawa Electric Corp | Turbidometer |
| JP2010164421A (en) * | 2009-01-15 | 2010-07-29 | Toshiba Corp | Automatic analysis apparatus |
| JP2015516076A (en) * | 2012-05-04 | 2015-06-04 | エコラボ ユーエスエー インコーポレイティド | Self-cleaning optical sensor |
| JP2015184273A (en) * | 2014-03-26 | 2015-10-22 | 栗田工業株式会社 | Concentration measuring apparatus and cleaning method of the same |
| JP2020046352A (en) * | 2018-09-20 | 2020-03-26 | 栗田工業株式会社 | Aggregation state monitoring sensor |
| WO2020059366A1 (en) * | 2018-09-20 | 2020-03-26 | 栗田工業株式会社 | Flocculation state monitoring sensor |
| US11474036B2 (en) | 2018-09-20 | 2022-10-18 | Kurita Water Industries Ltd. | Flocculation state monitoring sensor |
| CN115156187A (en) * | 2022-08-03 | 2022-10-11 | 安徽建筑大学 | Ultrasonic cleaning reaction kettle cleaning system and method |
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