JP2002139355A - Electromagnetic flow meter - Google Patents
Electromagnetic flow meterInfo
- Publication number
- JP2002139355A JP2002139355A JP2000337019A JP2000337019A JP2002139355A JP 2002139355 A JP2002139355 A JP 2002139355A JP 2000337019 A JP2000337019 A JP 2000337019A JP 2000337019 A JP2000337019 A JP 2000337019A JP 2002139355 A JP2002139355 A JP 2002139355A
- Authority
- JP
- Japan
- Prior art keywords
- liquid contact
- electrode
- contact electrode
- electrode chamber
- insulating layer
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、接液電極室内への
測定流体の液漏れ自己診断が可能となる電磁流量計に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic flowmeter capable of performing self-diagnosis of leakage of a measurement fluid into a liquid contact electrode chamber.
【０００２】[0002]
【従来の技術】図３は、従来より一般に使用されている
従来例の構成説明図である。図において、1は測定管、
２は測定管１に設けられたライニング体である。３はラ
イニング体２に設けられた接液電極である。４は接液電
極３の上部を覆う絶縁材のスペーサである。2. Description of the Related Art FIG. 3 is an explanatory view of the configuration of a conventional example generally used in the prior art. In the figure, 1 is a measuring tube,
Reference numeral 2 denotes a lining body provided in the measuring tube 1. Reference numeral 3 denotes a liquid contact electrode provided on the lining body 2. Reference numeral 4 denotes an insulating spacer covering the upper part of the liquid contact electrode 3.
【０００３】５は電極キャップで、測定管１と接液電極
室６を構成する。７は接液電極室６内の電極キャップ５
とスペーサ４との間に設けられ、接液電極３をライニン
グ体２に押圧するスプリングである。。[0005] Reference numeral 5 denotes an electrode cap, which forms the measuring tube 1 and the liquid contact electrode chamber 6. 7 is an electrode cap 5 in the wetted electrode chamber 6
A spring provided between the lining body 2 and the spacer 4. .
【０００４】以上の構成において、接液電極３はスプリ
ング７により、ライニング体２に押圧固定され、接液電
極３の測定流体ＦＬに対するシールが保たれる。In the above configuration, the liquid contact electrode 3 is pressed and fixed to the lining body 2 by the spring 7, and the seal of the liquid contact electrode 3 with respect to the measurement fluid FL is maintained.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、このよ
うな装置においては、以下の問題点がある。図３従来例
の構造では、過大圧等で接液電極室６に測定流体ＦＬが
浸入しても、浸入しているかどうかを、測定中に判断す
る事が出来なかった。However, such an apparatus has the following problems. In the structure of the conventional example shown in FIG. 3, even if the measurement fluid FL enters the liquid contact electrode chamber 6 due to excessive pressure or the like, it cannot be determined during the measurement whether or not the measurement fluid FL has entered.
【０００６】接液電極室６に測定流体ＦＬが浸入する
と、測定値が変化するが、測定流体ＦＬの変化との区別
が出来ないからである。When the measurement fluid FL enters the liquid contact electrode chamber 6, the measurement value changes, but it cannot be distinguished from the change in the measurement fluid FL.
【０００７】本発明の目的は、上記の課題を解決するも
ので、接液電極室内への測定流体の液漏れ自己診断が可
能となる電磁流量計を提供することにある。An object of the present invention is to solve the above-mentioned problems, and to provide an electromagnetic flowmeter capable of self-diagnosis of leakage of a measurement fluid into a liquid contact electrode chamber.
【０００８】[0008]
【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、本発明では、請求項１の電磁流量計において
は、測定管に設けられた接液電極室を具備する電磁流量
計において、前記接液電極室内に設けられた漏れチェッ
ク電極と、この漏れチェック電極と接液電極室とを絶縁
する絶縁層とを具備したことを特徴とする。In order to achieve the above object, according to the present invention, there is provided an electromagnetic flow meter having a liquid contact electrode chamber provided in a measuring tube. A leak check electrode provided in the liquid contact electrode chamber, and an insulating layer for insulating the leak check electrode from the liquid contact electrode chamber.
【０００９】本発明の請求項２においては、請求項1記
載の電磁流量計において、漏れチェック電極と接液電極
室とを絶縁する絶縁層として、接液電極を絶縁する絶縁
層が使用されたことを特徴とする。According to a second aspect of the present invention, in the electromagnetic flow meter according to the first aspect, an insulating layer that insulates the wet electrode is used as an insulating layer that insulates the leak check electrode from the wet electrode chamber. It is characterized by the following.
【００１０】本発明の請求項３においては、請求項１記
載の電磁流量計において、前記漏れチェック電極とし
て、前記接液電極室内に設けられ前記接液電極を押圧す
るスプリングが兼用使用されると共に、このスプリング
の一端が前記接液電極室より絶縁される第２の絶縁層が
使用されたことを特徴とする。According to a third aspect of the present invention, in the electromagnetic flowmeter according to the first aspect, a spring provided in the wetted electrode chamber and pressing the wetted electrode is also used as the leak check electrode. A second insulating layer is used in which one end of the spring is insulated from the liquid contact electrode chamber.
【００１１】[0011]
【発明の実施の形態】以下図面を用いて本発明を詳しく
説明する。図１は本発明の一実施例の要部構成説明図で
ある。図において、図３と同一記号の構成は同一機能を
表す。以下、図３と相違部分のみ説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. FIG. 1 is an explanatory diagram of a main configuration of an embodiment of the present invention. In the figure, the configuration of the same symbol as FIG. 3 represents the same function. Hereinafter, only differences from FIG. 3 will be described.
【００１２】図において、漏れチェック電極１１が接液
電極室６に設けられている。絶縁層１２は、漏れチェッ
ク電極１１と接液電極室６とを絶縁する。この場合は、
絶縁層１２は、接液電極３を絶縁する絶縁層であるスペ
ーサ４が兼用使用されている。In the figure, a leak check electrode 11 is provided in a liquid contact electrode chamber 6. The insulating layer 12 insulates the leak check electrode 11 from the liquid contact electrode chamber 6. in this case,
As the insulating layer 12, the spacer 4, which is an insulating layer for insulating the liquid contact electrode 3, is also used.
【００１３】２１，２２は漏れチェック電極１１と測定
管１との間に設けられた電源と抵抗である。Reference numerals 21 and 22 denote a power source and a resistor provided between the leak check electrode 11 and the measuring tube 1.
【００１４】以上の構成において、漏れチェック電極１
１と測定管１との間に電圧をかけておき、この間の電流
値を、常にまたは一定間隔でチェックする。接液電極室
６に測定流体ＦＬの漏れが発生すると、漏れチェック電
極１１と測定管１との間に電流が流れる。In the above configuration, the leak check electrode 1
A voltage is applied between the measuring tube 1 and the measuring tube 1, and the current value during this period is checked constantly or at regular intervals. When a leak of the measurement fluid FL occurs in the liquid contact electrode chamber 6, a current flows between the leak check electrode 11 and the measurement tube 1.
【００１５】この電流を検出することにより、接液電極
室６への測定流体ＦＬの漏れ診断が可能となる。By detecting this current, it is possible to diagnose leakage of the measurement fluid FL into the liquid contact electrode chamber 6.
【００１６】この結果、 （１）漏れチェック電極１１が設けられたので、測定流
体ＦＬが過大圧等により接液電極室６に侵入しても、直
ちにチェック出来、接液電極３の漏れの自己診断が可能
で、トラブルの早期発見が可能な電磁流量計が得られ
る。As a result, (1) Since the leak check electrode 11 is provided, even if the measurement fluid FL enters the liquid contact electrode chamber 6 due to excessive pressure or the like, it can be checked immediately, and the leak of the liquid contact electrode 3 can be checked. It is possible to obtain an electromagnetic flowmeter that enables diagnosis and enables early detection of trouble.
【００１７】（２）漏れチェック電極１１が採用された
ので、リモートメンテナンスが可能となる電磁流量計が
得られる。 （３）漏れチェック電極１１と接液電極室６とを絶縁す
る絶縁層１２として、接液電極３を絶縁する絶縁層が兼
用使用されたので、安価な電磁流量計が得られる。(2) Since the leak check electrode 11 is employed, an electromagnetic flowmeter capable of remote maintenance can be obtained. (3) Since the insulating layer that insulates the liquid contact electrode 3 is also used as the insulating layer 12 that insulates the leak check electrode 11 from the liquid contact electrode chamber 6, an inexpensive electromagnetic flow meter can be obtained.
【００１８】図２は本発明の他の実施例の要部構成説明
図である。本実施例においては、漏れチェック電極１１
として、接液電極室６に設けられ、接液電極３を押圧す
るスプリング７が兼用使用されている。また、このスプ
リング７の一端が、接液電極室６より絶縁される第２の
絶縁層３１が使用されている。FIG. 2 is an explanatory view of the structure of a main part of another embodiment of the present invention. In this embodiment, the leak check electrode 11
The spring 7 provided in the liquid contact electrode chamber 6 and pressing the liquid contact electrode 3 is also used. Further, a second insulating layer 31 is used in which one end of the spring 7 is insulated from the liquid contact electrode chamber 6.
【００１９】この結果、漏れチェック電極１１として、
接液電極室６に設けられ、接液電極３を押圧するスプリ
ング７が兼用使用されたので、従来の構成部品が兼用利
用出来、更に、安価な電磁流量計が得られる。As a result, as the leak check electrode 11,
Since the spring 7 that is provided in the liquid contact electrode chamber 6 and presses the liquid contact electrode 3 is also used, conventional components can be used for both purposes, and an inexpensive electromagnetic flow meter can be obtained.
【００２０】なお、以上の説明は、本発明の説明および
例示を目的として、特定の好適な実施例を示したに過ぎ
ない。したがって本発明は、上記実施例に限定されるこ
となく、その本質から逸脱しない範囲で更に多くの変
更、変形をも含むものである。It is to be noted that the above description has shown only specific preferred embodiments for the purpose of explanation and illustration of the present invention. Therefore, the present invention is not limited to the above-described embodiment, but includes many more changes and modifications without departing from the essence thereof.
【００２１】[0021]
【発明の効果】以上説明したように、本発明の請求項１
によれば、次のような効果がある。 （１）漏れチェック電極が設けられたので、測定流体が
過大圧等により接液電極室内に浸入しても直ちにチェッ
ク出来、接液電極漏れの自己診断が可能で、トラブルの
早期発見が可能な電磁流量計が得られる。As described above, according to the first aspect of the present invention,
According to the above, the following effects are obtained. (1) Since the leak check electrode is provided, even if the measured fluid enters the wetted electrode chamber due to excessive pressure or the like, it can be checked immediately, the self-diagnosis of the wetted electrode leak is possible, and the trouble can be found early. An electromagnetic flow meter is obtained.
【００２２】（２）漏れチェック電極が採用されたの
で、リモートメンテナンスが可能となる電磁流量計が得
られる。(2) Since the leak check electrode is employed, an electromagnetic flow meter capable of remote maintenance can be obtained.
【００２３】本発明の請求項２によれば、次のような効
果がある。漏れチェック電極と接液電極室とを絶縁する
絶縁層として、接液電極を絶縁する絶縁層が兼用使用さ
れたので、安価な電磁流量計が得られる。According to the second aspect of the present invention, the following effects can be obtained. Since the insulating layer for insulating the liquid contact electrode is also used as the insulating layer for insulating the leak check electrode and the liquid contact electrode chamber, an inexpensive electromagnetic flowmeter can be obtained.
【００２４】本発明の請求項３によれば、次のような効
果がある。漏れチェック電極として、前記接液電極室内
に設けられ前記接液電極を押圧するスプリングが使用さ
れたので、従来の構成部品が兼用利用出来、更に、安価
な電磁流量計が得られる。According to the third aspect of the present invention, the following effects can be obtained. Since a spring provided in the wetted electrode chamber and pressing the wetted electrode is used as the leak check electrode, conventional components can be used for both purposes, and an inexpensive electromagnetic flowmeter can be obtained.
【００２５】従って、本発明によれば、接液電極室内へ
の測定流体の液漏れ自己診断が可能となる電磁流量計を
実現することが出来る。Therefore, according to the present invention, it is possible to realize an electromagnetic flowmeter capable of performing self-diagnosis of leakage of a measurement fluid into a liquid contact electrode chamber.
【図１】本発明の一実施例の要部構成説明図である。FIG. 1 is an explanatory diagram of a main part configuration of an embodiment of the present invention.
【図２】本発明の他の実施例の要部構成説明図である。FIG. 2 is an explanatory diagram of a main part configuration of another embodiment of the present invention.
【図３】従来より一般に使用されている従来例の要部構
成説明図である。FIG. 3 is an explanatory diagram of a configuration of a main part of a conventional example generally used in the related art.
１ 測定管 ２ ライニング体 ３ 接液電極 ４ スペーサ ５ 電極キャップ ６ 接液電極室 ７ スプリング １１ 漏れチェック電極 １２ 絶縁層 ２１ 電源 ２２ 抵抗 ３１ 第２の絶縁層 ＦＬ 測定流体 DESCRIPTION OF SYMBOLS 1 Measurement tube 2 Lining body 3 Wetted electrode 4 Spacer 5 Electrode cap 6 Wetted electrode chamber 7 Spring 11 Leak check electrode 12 Insulating layer 21 Power supply 22 Resistance 31 Second insulating layer FL Measurement fluid
Claims (3)
電磁流量計において、 前記接液電極室内に設けられた漏れチェック電極と、 この漏れチェック電極と接液電極室とを絶縁する絶縁層
とを具備したことを特徴とする電磁流量計。1. An electromagnetic flowmeter having a wetted electrode chamber provided in a measuring tube, wherein a leak check electrode provided in the wetted electrode chamber is insulated from the leak check electrode and the wetted electrode chamber. An electromagnetic flowmeter comprising an insulating layer.
る絶縁層として、接液電極を絶縁する絶縁層が使用され
たことを特徴とする請求項1記載の電磁流量計。2. The electromagnetic flow meter according to claim 1, wherein an insulating layer for insulating the liquid contact electrode is used as an insulating layer for insulating the leak check electrode and the liquid contact electrode chamber.
極室内に設けられ前記接液電極を押圧するスプリングが
兼用使用されると共に、 このスプリングの一端が前記接液電極室より絶縁される
第２の絶縁層が使用されたことを特徴とする請求項１記
載の電磁流量計。3. A spring provided in the liquid contact electrode chamber and pressing the liquid contact electrode is also used as the leak check electrode, and one end of the spring is insulated from the liquid contact electrode chamber. The electromagnetic flowmeter according to claim 1, wherein the insulating layer is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000337019A JP4045528B2 (en) | 2000-11-06 | 2000-11-06 | Electromagnetic flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000337019A JP4045528B2 (en) | 2000-11-06 | 2000-11-06 | Electromagnetic flow meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002139355A true JP2002139355A (en) | 2002-05-17 |
| JP4045528B2 JP4045528B2 (en) | 2008-02-13 |
Family
ID=18812469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000337019A Expired - Lifetime JP4045528B2 (en) | 2000-11-06 | 2000-11-06 | Electromagnetic flow meter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4045528B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3070441A3 (en) * | 2015-03-16 | 2017-03-08 | Invensys Systems, Inc. | Systems and methods for detecting leaks in an electromagnetic flowmeter |
| JP2017530359A (en) * | 2014-09-30 | 2017-10-12 | マイクロ モーション インコーポレイテッド | Electromagnetic flow meter with vapor transmission sensor |
-
2000
- 2000-11-06 JP JP2000337019A patent/JP4045528B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017530359A (en) * | 2014-09-30 | 2017-10-12 | マイクロ モーション インコーポレイテッド | Electromagnetic flow meter with vapor transmission sensor |
| EP3201574B1 (en) * | 2014-09-30 | 2023-11-22 | Micro Motion, Inc. | Magnetic flowmeter with vapor permeation sensor |
| EP3070441A3 (en) * | 2015-03-16 | 2017-03-08 | Invensys Systems, Inc. | Systems and methods for detecting leaks in an electromagnetic flowmeter |
| US9810559B2 (en) | 2015-03-16 | 2017-11-07 | Invensys Systems, Inc. | Systems and methods for detecting leaks in an electromagnetic flowmeter |
| US10175074B2 (en) | 2015-03-16 | 2019-01-08 | Schneider Electric Systems Usa, Inc. | Systems and methods for detecting leaks in an electromagnetic flowmeter |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4045528B2 (en) | 2008-02-13 |
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