JPH09210787A - Method for determining water quality signal of city water - Google Patents

Method for determining water quality signal of city water

Info

Publication number
JPH09210787A
JPH09210787A JP1857496A JP1857496A JPH09210787A JP H09210787 A JPH09210787 A JP H09210787A JP 1857496 A JP1857496 A JP 1857496A JP 1857496 A JP1857496 A JP 1857496A JP H09210787 A JPH09210787 A JP H09210787A
Authority
JP
Japan
Prior art keywords
water
water quality
sensor
abnormal
pressure sensor
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
Application number
JP1857496A
Other languages
Japanese (ja)
Other versions
JP3582202B2 (en
Inventor
Mutsuhisa Hiraoka
睦久 平岡
Naohiro Noda
直広 野田
Tokio Oodo
時喜雄 大戸
Kenji Harada
健治 原田
Fumio Toyama
文生 外山
Hideo Kanai
秀夫 金井
Hiroshi Tada
弘 多田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP01857496A priority Critical patent/JP3582202B2/en
Publication of JPH09210787A publication Critical patent/JPH09210787A/en
Application granted granted Critical
Publication of JP3582202B2 publication Critical patent/JP3582202B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Spectrometry And Color Measurement (AREA)

Abstract

PROBLEM TO BE SOLVED: To transmit a service interruption signal accurately from an abnormality signal of a water quality sensor by making a decision that the water service is interrupted when a plurality of abnormal water quality signals are transmitted. SOLUTION: A signal processor 7 has a function for determining a water quality signal and makes a decision that the water service is interrupted when the output level from a water pressure sensor 3 drops and the output level from a color/turbidity sensor 5 increases. A decision is made that the water pressure sensor 3 is abnormal when only the output level therefrom drops. A signal indicative of interruption of city water supply or a signal indicative of failure of the water pressure sensor 3 is then delivered through a communication unit 8. Furthermore, a decision is made that the water supply is interrupted when the output level from both water pressure sensor 3 and a residual chlorine sensor 6 drop and a decision is made that the water pressure sensor 3 is abnormal when only the output level therefrom drops. Since a decision is made that the water supply is interrupted when a plurality of abnormal water quality signals are transmitted, a decision can be made easily whether the sensor is abnormal or the water supply is interrupted.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】この発明は水道水質自動計測
装置の発信する異常な水道水質信号の判別方法に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for discriminating an abnormal tap water quality signal transmitted by an automatic tap water quality measuring device.

【0002】[0002]

【従来の技術】水道法では水道事業者に対して、水道水
の色,濁り,残留塩素濃度の3項目の水質検査を給水区
域内の複数の給水栓水を対象に毎日1回以上行うことを
義務づけている。この検査を自動化して行う装置が水道
水質自動監視装置であり色・濁り,残留塩素の各測定セ
ンサを主体として、これに水温,水圧,電気伝導率,p
Hの各水質センサを追加した構成のものが一般的であ
る。
2. Description of the Related Art Under the Water Supply Act, a water quality test for a water supplier is performed once or more every day for a plurality of tap water in a water supply area. Is obligatory. A device for automatically performing this inspection is a tap water quality automatic monitoring device, which mainly uses color, turbidity, and residual chlorine measurement sensors, and also water temperature, water pressure, electrical conductivity, p
Generally, the water quality sensor of H is added.

【0003】色・濁りの測定に関しては、色を色度で代
用測定し、濁りを濁度で代用測定することが認められて
いるため、色・濁りセンサとして、色度・濁度計が用い
られることが多い。「上水試験方法」第73頁〜第74
頁(1993年)(厚生省生活衛生局水道環境部監修,
(社)日本水道協会発行)によれば、色度は「水中に含
まれる溶解性物質およびコロイド性物質が呈する類黄色
ないし黄褐色の程度」とされ、目視による比色法と波長
390nmの吸光度が公定法として示されている。一
方、濁度は「水の濁りの程度」とされ、目視による比濁
法と波長660nmの吸光度が公定法として示されてい
る。
Regarding the measurement of color and turbidity, it is recognized that the color is measured by the chromaticity as a substitute and the turbidity is measured by the turbidity. Therefore, a chromaticity / turbidity meter is used as a color / turbidity sensor. It is often done. "Water supply test method" pp. 73-74
Page (1993) (Ministry of Health and Welfare Bureau of Public Health, Water Environment Department,
According to (published by the Japan Water Works Association), the chromaticity is “the degree of yellowish or yellowish brown exhibited by soluble substances and colloidal substances contained in water”, and the colorimetric method by visual observation and the absorbance at a wavelength of 390 nm Is shown as the official method. On the other hand, the turbidity is defined as “the degree of turbidity of water”, and the visual turbidimetric method and the absorbance at a wavelength of 660 nm are shown as official methods.

【0004】このような色度と濁度を自動的に計測する
センサは、すでに各種市販されており、センサは基本的
に光源、フローセル、390nmと660nmの光を透
過させる各光学フィルタ、光電変換器からなり、連続的
に試料水が流れるフローセルに390nmと660nm
の光を順に透過させ、その吸光度を各々測定し、換算式
または換算表から色度、濁度に変換して出力する。
Various types of sensors for automatically measuring such chromaticity and turbidity are already on the market, and the sensors are basically light sources, flow cells, optical filters for transmitting light of 390 nm and 660 nm, and photoelectric conversion. 390nm and 660nm in the flow cell which consists of a vessel and the sample water flows continuously.
Light is sequentially transmitted, and the respective absorbances are measured, converted into chromaticity and turbidity from a conversion formula or conversion table, and output.

【0005】色・濁りを計測するセンサは、上述の色
度、濁度計測タイプのほかに、本発明者らが特願平6−
206227号により出願中のものがあり、これはより
目視検査に近い原理による色の測定をR( 赤) 、G(
緑) 、B( 青) 3原色の各吸光度解析から行うものであ
る。また残留塩素を自動計測するセンサとしては、ポー
ラログラフ電極法によるセンサが一般的に用いられる。
ポーラログラフ電極法は、検水に浸した金電極と銀電極
間に適当な電圧を加え、そのとき流れる拡散電流から残
留塩素量を測定する。電極表面のイオン拡散の制御のた
めに、金電極を回転したり、電極表面に水流を衝突させ
る。
In addition to the above-mentioned chromaticity and turbidity measurement type, the present inventors have proposed a sensor for measuring color and turbidity in Japanese Patent Application No. 6-
There is a patent pending by No. 206227, which measures color by the principle closer to visual inspection, R (red), G (
This is performed from the respective absorbance analyzes of the three primary colors of green) and B (blue). Further, as a sensor for automatically measuring residual chlorine, a sensor by a polarographic electrode method is generally used.
In the polarographic electrode method, an appropriate voltage is applied between a gold electrode and a silver electrode immersed in test water, and the amount of residual chlorine is measured from the diffusion current flowing at that time. In order to control the ion diffusion on the electrode surface, the gold electrode is rotated or a water stream is collided with the electrode surface.

【0006】水道水質自動監視装置は、3ヶ月程度ノー
メンテナンスで運転され、水質測定値は、通信回線を介
して中央監視局にあるホストコンピュータに電送され
る。自動運転中に水質センサが異常信号を発信した場合
には、この異常信号は中央監視局にあるホストコンピュ
ータに伝送される。異常信号のうち水圧センサの出力値
の低下は従来、断水検知の方法として使用されてきた。
The automatic tap water quality monitoring device is operated without maintenance for about 3 months, and the measured water quality value is transmitted to the host computer in the central monitoring station via the communication line. When the water quality sensor emits an abnormal signal during automatic operation, this abnormal signal is transmitted to the host computer in the central monitoring station. The decrease of the output value of the water pressure sensor in the abnormal signal has been used as a method of water cut detection.

【0007】[0007]

【発明が解決しようとする課題】しかしながら従来の断
水検知の方法によるときは、水圧センサが故障して出力
がゼロになった場合にも断水警報を発してしまうという
問題があり、そのために正確に断水警報を発信すること
が困難であった。この発明は上述の点に鑑みてなされそ
の目的は、水道水質センサの異常信号により正確に断水
警報を発信することが可能な水道水質信号の判別方法を
提供することにある。
However, according to the conventional method of detecting water cutoff, there is a problem that the water cutoff alarm is issued even when the output becomes zero due to a failure of the water pressure sensor. It was difficult to issue a water cut warning. The present invention has been made in view of the above points, and an object thereof is to provide a method of discriminating a tap water quality signal capable of accurately issuing a water cut warning by an abnormal signal of a tap water quality sensor.

【0008】[0008]

【課題を解決するための手段】上述の目的はこの発明に
よれば複数の水質センサを有する水道水質自動監視装置
の発信する異常な水道水質信号の判別方法であって、異
常な水道水質信号の発信が単一であるときに、その水道
水質信号を発信する水質センサの異常あるいは前記水質
センサの検知する水質の異常と判定し、異常な水道水質
信号の発信が複数であるときに水道の断水と判定するこ
とにより達成される。
According to the present invention, the above object is a method for discriminating an abnormal tap water quality signal transmitted by an automatic tap water quality monitoring device having a plurality of water quality sensors. When there is only one transmission, it is judged that there is an abnormality in the water quality sensor that emits the tap water quality signal or an abnormality in the water quality detected by the water quality sensor, and when there are multiple transmissions of abnormal tap water quality signals, the water supply is cut off. It is achieved by determining

【0009】上述の発明において複数の異常な水道水質
信号は水圧センサと色・濁りセンサの各出力信号である
とすること、または複数の異常な水道水質信号は水圧セ
ンサと残留塩素センサの各出力信号であるとすることが
有効である。水道水質信号の組み合わせとしては例えば
水圧センサ,色・濁りセンサ,残留塩素センサ,電気伝
導度セルまたはpH計の各センサの発信する水道水質信
号のうちの少なくとも二つが用いられる。色・濁りセン
サの発信する水道水質信号には色度,濁度,着色度,色
相が含まれる。
In the above invention, the plurality of abnormal tap water quality signals are output signals of the water pressure sensor and the color / turbidity sensor, or the plurality of abnormal tap water quality signals are output by the water pressure sensor and the residual chlorine sensor. It is effective to assume that it is a signal. As the combination of the tap water quality signals, for example, at least two of the tap water quality signals transmitted from the water pressure sensor, the color / turbidity sensor, the residual chlorine sensor, the electric conductivity cell or the pH meter are used. The tap water quality signal transmitted by the color / turbidity sensor includes chromaticity, turbidity, coloring, and hue.

【0010】水道断水のときには色・濁りセンサのフロ
ーセルが空になり屈折率の変化から光透過率が低下して
色・濁りセンサの出力値上昇が起こる。従って水道断水
のときには水圧センサの出力値低下と色・濁りセンサの
出力値上昇の両方が起こる。水圧センサの出力値低下の
みが起こったときには水圧センサの異常または水圧の低
下と判断し、水圧センサの出力値低下と色・濁りセンサ
の出力値上昇の両方が起こったときに水道断水と判定す
ることにより水道断水であるか水道水質自動監視装置の
水圧センサ故障であるかの判別ができる。
When the water supply is cut off, the flow cell of the color / turbidity sensor becomes empty, and the light transmittance decreases due to the change in the refractive index, causing an increase in the output value of the color / turbidity sensor. Therefore, when the water supply is cut off, both the output value of the water pressure sensor and the output value of the color / turbidity sensor increase. If only the output value of the water pressure sensor decreases, it is determined that the water pressure sensor is abnormal or the water pressure decreases.If both the output value of the water pressure sensor and the output value of the color / turbidity sensor increase, it is determined that the water supply is cut off. By doing so, it is possible to determine whether the water supply is cut off or the water pressure sensor of the automatic water quality monitoring device has failed.

【0011】また水道断水のときには残留塩素センサに
試料水が流れなくなることにより電極表面付近のイオン
拡散電流が減少し、残留塩素測定値が低下する。断水の
ときには水圧センサの出力値低下と残留塩素センサの出
力値低下の両方が起こるため、水圧センサの出力値低下
のみ起こったときには水圧センサの異常または水圧の低
下と判定し、水圧センサの出力値低下と残留塩素センサ
の出力値低下の両方が起こったときに水道断水と判定す
ることによって水道断水であるか水道水質自動監視装置
の水圧センサ故障であるかの判別ができる。
Further, when the water supply is cut off, the sample water does not flow to the residual chlorine sensor, so that the ion diffusion current near the surface of the electrode decreases and the measured value of residual chlorine decreases. When water is cut off, the output value of the water pressure sensor and the output value of the residual chlorine sensor both decrease, so if only the output value of the water pressure sensor decreases, it is judged that the water pressure sensor is abnormal or the water pressure has decreased, and the output value of the water pressure sensor When both the decrease and the output value of the residual chlorine sensor decrease, it is possible to determine whether the water supply is cut off or whether the water pressure sensor of the automatic water quality monitoring device is defective.

【0012】水圧センサは水道水質自動監視装置に設置
するセンサのなかで最も先位に配置されるので水圧セン
サは水道水質自動監視装置の他の要素、例えばバルブ等
の影響を受けにくく、水道水質自動監視装置のバルブに
起因する断水の誤報がなくなるから水圧センサの発信す
る信号は他の水質センサの信号よりも信頼性が高くな
る。
Since the water pressure sensor is arranged at the highest position among the sensors installed in the automatic tap water quality monitoring device, the water pressure sensor is not easily affected by other elements of the automatic tap water quality monitoring device, for example, a valve and the like. Since the false alarm of water cutoff caused by the valve of the automatic monitoring device is eliminated, the signal transmitted by the water pressure sensor is more reliable than the signals of other water quality sensors.

【0013】[0013]

【発明の実施の形態】図1はこの発明の実施例に係る水
道水質自動監視装置を示す配置図である。測定試料であ
る水道水1は、取水配管2を介して装置に導かれ、水圧
センサ3で水圧が測定される。水道水1は、T型継手4
により2つの流路に分かれ、色・濁りセンサ5で色、濁
りの測定が、残留塩素センサ6で残留塩素の測定が行わ
れる。各センサの出力は信号処理装置7に集められたの
ち通信装置8により図示しない外部装置に出力される。
測定終了後の水道水1は、排水9として系外に流出させ
る。
1 is a layout view showing an automatic tap water quality monitoring apparatus according to an embodiment of the present invention. Tap water 1, which is a measurement sample, is guided to the apparatus via an intake pipe 2, and the water pressure is measured by a water pressure sensor 3. Tap water 1 is T-type fitting 4
Is divided into two flow paths, and the color / turbidity sensor 5 measures color and turbidity, and the residual chlorine sensor 6 measures residual chlorine. The output of each sensor is collected by the signal processing device 7 and then output to an external device (not shown) by the communication device 8.
The tap water 1 after the measurement is made to flow out of the system as drainage 9.

【0014】信号処理装置7は水質信号判定機能を有し
水圧センサの出力値低下と色・濁りセンサの出力値上昇
の両方が起こったときに水道断水と判定し、水圧センサ
の出力値低下のみ起こったときには水圧センサの異常と
判定して、通信装置7を経由し、図示しない外部装置に
水道断水であることを表す信号または水圧センサが故障
であることを表す信号を出力する。
The signal processing device 7 has a water quality signal judging function and judges that the water supply is cut off when both the output value of the water pressure sensor and the output value of the color / turbidity sensor increase, and only the output value of the water pressure sensor decreases. When it occurs, it is determined that the water pressure sensor is abnormal, and a signal indicating that the water supply is cut off or a signal indicating that the water pressure sensor is defective is output to an external device (not shown) via the communication device 7.

【0015】上述と同様にして水圧センサの出力値低下
と残留塩素センサの出力値低下の両方が起こったときに
水道断水と判定し、水圧センサの出力値低下のみ起こっ
たときには水圧センサの異常と判定して通信装置7を経
由し図示しない外部装置に水道断水であることを表す信
号または水圧センサが故障であることを表す信号を出力
する。
In the same manner as described above, it is determined that the water supply is cut off when both the output value decrease of the water pressure sensor and the output value decrease of the residual chlorine sensor occur, and when only the output value decrease of the water pressure sensor occurs, the water pressure sensor is abnormal. A determination is made and a signal indicating that the water supply is cut off or a signal indicating that the water pressure sensor has failed is output to an external device (not shown) via the communication device 7.

【0016】[0016]

【発明の効果】この発明によれば異常な水道水質信号の
発信が単一であるときにはその水道水質信号を発信する
水質センサの異常あるいは前記水質センサの検知する水
質の異常と判定し、異常な水道水質信号の発信が複数で
あるときに断水と判定するので、水道水質自動監視装置
の水質センサが異常であるか、水道水質自動監視装置に
断水が起こっているかの判別が容易となり、その結果正
確に断水警報を発信することが可能となる。
According to the present invention, when there is only one abnormal water quality signal transmission, it is determined that the water quality sensor which transmits the abnormal water quality signal or the water quality detected by the water quality sensor is abnormal. When there are multiple tap water quality signals, it is determined that the water is out of service, so it is easy to determine whether the water quality sensor of the automatic water quality monitoring device is abnormal or whether the water quality automatic monitoring device is running out of water. It becomes possible to transmit a water cut warning accurately.

【0017】水圧センサは水道水質自動監視装置の水質
センサのなかで最も信頼性が高いので水圧センサと色・
濁りセンサの出力信号の組み合わせ、水圧センサと残留
塩素センサの出力信号の組み合わせを用いて精度の高い
断水警報の発信が可能となる。
Since the water pressure sensor has the highest reliability among the water quality sensors of the automatic tap water quality monitoring device,
Using the combination of the output signals of the turbidity sensor and the combination of the output signals of the water pressure sensor and the residual chlorine sensor, it is possible to transmit a water cut warning with high accuracy.

【図面の簡単な説明】[Brief description of drawings]

【図1】この発明の実施例に係る水道水質自動監視装置
を示す配置図
FIG. 1 is a layout view showing an automatic tap water quality monitoring device according to an embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1 上水道 2 取水配管 3 水圧センサ 4 T型継手 5 色・濁りセンサ 6 残留塩素センサ 7 信号処理装置 8 通信装置 9 排水 1 Waterworks 2 Water intake pipe 3 Water pressure sensor 4 T-type joint 5 Color / turbidity sensor 6 Residual chlorine sensor 7 Signal processor 8 Communication device 9 Drainage

───────────────────────────────────────────────────── フロントページの続き (72)発明者 原田 健治 神奈川県川崎市川崎区田辺新田1番1号 富士電機株式会社内 (72)発明者 外山 文生 神奈川県川崎市川崎区田辺新田1番1号 富士電機株式会社内 (72)発明者 金井 秀夫 神奈川県川崎市川崎区田辺新田1番1号 富士電機株式会社内 (72)発明者 多田 弘 神奈川県川崎市川崎区田辺新田1番1号 富士電機株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenji Harada, No. 1 Tanabe Shinden, Kawasaki-ku, Kawasaki-shi, Kanagawa Fuji Electric Co., Ltd. (72) Fumio Sotoyama No. 1, Nitta Tanabe, Kawasaki-ku, Kawasaki-shi, Kanagawa No. 1 in Fuji Electric Co., Ltd. (72) Hideo Kanai No. 1 Tanabe Shinden, Kawasaki-ku, Kawasaki-shi, Kanagawa No. 1 Fuji Electric Co., Ltd. (72) Hiroshi Tada No. 1 Tanabe Nitta, Kawasaki-ku, Kawasaki-shi, Kanagawa No. 1 inside Fuji Electric Co., Ltd.

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】複数の水質センサを有する水道水質自動監
視装置の発信する異常な水道水質信号の判別方法であっ
て、異常な水道水質信号の発信が単一であるときに、そ
の水道水質信号を発信する水質センサの異常あるいは前
記水質センサの検知する水質の異常と判定し、異常な水
道水質信号の発信が複数であるときに水道の断水と判定
することを特徴とする水道水質信号の判別方法。
1. A method for discriminating an abnormal tap water quality signal transmitted by an automatic tap water quality monitoring device having a plurality of water quality sensors, wherein the abnormal tap water quality signal is transmitted once. Of the water quality sensor that transmits the water quality abnormality or the water quality detected by the water quality sensor is determined, and when there are multiple abnormal water quality signal transmissions, it is determined that the water supply is cut off. Method.
【請求項2】請求項1に記載の判別方法において、複数
の異常な水道水質信号は水圧センサと色・濁りセンサの
出力信号であることを特徴とする水道水質信号の判別方
法。
2. The method of determining a tap water quality signal according to claim 1, wherein the plurality of abnormal tap water quality signals are output signals of a water pressure sensor and a color / turbidity sensor.
【請求項3】請求項1に記載の判別方法において、複数
の異常な水道水質信号は水圧センサと残留塩素センサの
出力信号であることを特徴とする水道水質信号の判別方
法。
3. The method of determining a tap water quality signal according to claim 1, wherein the plurality of abnormal tap water quality signals are output signals of a water pressure sensor and a residual chlorine sensor.
JP01857496A 1996-02-05 1996-02-05 How to determine tap water quality signal Expired - Lifetime JP3582202B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP01857496A JP3582202B2 (en) 1996-02-05 1996-02-05 How to determine tap water quality signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP01857496A JP3582202B2 (en) 1996-02-05 1996-02-05 How to determine tap water quality signal

Publications (2)

Publication Number Publication Date
JPH09210787A true JPH09210787A (en) 1997-08-15
JP3582202B2 JP3582202B2 (en) 2004-10-27

Family

ID=11975398

Family Applications (1)

Application Number Title Priority Date Filing Date
JP01857496A Expired - Lifetime JP3582202B2 (en) 1996-02-05 1996-02-05 How to determine tap water quality signal

Country Status (1)

Country Link
JP (1) JP3582202B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017040537A (en) * 2015-08-19 2017-02-23 住重環境エンジニアリング株式会社 Water quality meter protection system and water quality measurement system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017040537A (en) * 2015-08-19 2017-02-23 住重環境エンジニアリング株式会社 Water quality meter protection system and water quality measurement system
WO2017030029A1 (en) * 2015-08-19 2017-02-23 住重環境エンジニアリング株式会社 Water-quality meter protection system and water-quality measurement system

Also Published As

Publication number Publication date
JP3582202B2 (en) 2004-10-27

Similar Documents

Publication Publication Date Title
CN102292450B (en) Device and method for detection of humidity-compromised urine test strips
CA1130604A (en) Oil-in-water method and detector
FI73835B (en) VATTENNAAAAETARE MED FELDETEKTOR.
EP2734037B1 (en) Detector system, sensor and dairy animal treatment device comprising the same
CN110208199A (en) One kind can be used for the device and method of ultraviolet in on-line determination water-visible absorption spectra
CA2693631A1 (en) Oil quality sensor and oil heater for deep fryers
IES81138B2 (en) Photometric analysis of water suspensions
JPH09210787A (en) Method for determining water quality signal of city water
CN210180617U (en) Valve leakage detection device
JP3505560B2 (en) Self-diagnosis method for liquid color / turbidity measurement device
US20100047848A1 (en) Colorimetric determination of somatic cell count in milk
US20080057596A1 (en) Colorimetric determination of somatic cell count in milk
JP3095954B2 (en) Tap water color and turbidity detector
JP7530791B2 (en) Measurement device and method for measuring turbidity or color of liquid sample
JPH08313436A (en) Deterioration detection method of filter for automatic tap water quality monitoring apparatus
JP3427580B2 (en) Deterioration detection method for filter of automatic tap water quality monitoring device
JP5637278B2 (en) Automatic measurement method of lysate concentration
JPH10339697A (en) Lamp burnout detector of colorimetry analyzer
JP2588441B2 (en) Method for correcting characteristics of individual sensors constituting multi-point detection device
JPH0125017B2 (en)
TWM660957U (en) Optical brake fluid status detection system
JPH09304373A (en) Method for detecting red and black water using optical water quality measuring instrument and method for operating water distribution monitor
JPS63238453A (en) Apparatus for inspecting property of liquid
US11428639B2 (en) Device and method for detection of humidity-compromised urine test strips
JP2003512601A (en) Method and system for counting particles and detecting water

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20040325

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20040406

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20040607

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20040706

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20040719

R150 Certificate of patent (=grant) or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20070806

Year of fee payment: 3

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080806

Year of fee payment: 4

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080806

Year of fee payment: 4

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080806

Year of fee payment: 4

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080806

Year of fee payment: 4

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313113

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080806

Year of fee payment: 4

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080806

Year of fee payment: 4

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090806

Year of fee payment: 5

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313111

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090806

Year of fee payment: 5

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090806

Year of fee payment: 5

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100806

Year of fee payment: 6

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110806

Year of fee payment: 7

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110806

Year of fee payment: 7

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120806

Year of fee payment: 8

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120806

Year of fee payment: 8

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130806

Year of fee payment: 9

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term