JPS6363937A - Industrial gas measuring apparatus - Google Patents

Industrial gas measuring apparatus

Info

Publication number
JPS6363937A
JPS6363937A JP61206688A JP20668886A JPS6363937A JP S6363937 A JPS6363937 A JP S6363937A JP 61206688 A JP61206688 A JP 61206688A JP 20668886 A JP20668886 A JP 20668886A JP S6363937 A JPS6363937 A JP S6363937A
Authority
JP
Japan
Prior art keywords
gas
measured
dust
orifice
intake port
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
Application number
JP61206688A
Other languages
Japanese (ja)
Inventor
Toru Kodachi
小太刀 徹
Jun Usami
宇佐美 諄
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.)
NGK Insulators Ltd
Original Assignee
NGK Insulators 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 NGK Insulators Ltd filed Critical NGK Insulators Ltd
Priority to JP61206688A priority Critical patent/JPS6363937A/en
Publication of JPS6363937A publication Critical patent/JPS6363937A/en
Pending legal-status Critical Current

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  • Measuring Oxygen Concentration In Cells (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

PURPOSE:To achieve a higher response of gas detection while reducing the adhesion of dust, by a method wherein a gas to be measured is drawn on the upstream of an orifice opened in the direction of the gas being measured flows to be supplied to a gas detector and discharged on the downstream thereof. CONSTITUTION:A tip opening 25 of a cylinder tube 24 of a probe 20 mounted on a furnace wall 21 is divided in two, a gas intake port 29 and a gas exhaust port 30, with a partition 28 along the direction A of a gas flows. The gas being measured flows in along the partition 28 at the intake port 29 and discharged at the exhaust port 30. At the same time, the gas is supplied to a detecting section 40 through a filter 42 of a gas detector 27 to be measured. Dust contained in the gas being measured is guided to a tilt plate 33 to be discharged directly through a slot 34, resulting in a reduction in the adhesion thereof to the filter 2. This facilitates the drawing of the gas to achieve a higher response in gas detection and reduces the adhesion of dust, thereby checking the lowering of measuring capacity.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、工業用ガス測定装置に関し、特に各種燃焼炉
の煙道内または炉内等に挿入して燃焼排ガス中の酸素濃
度の測定等に用いて好適な工業用ガス測定装置に関する
ものである。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an industrial gas measuring device, and in particular to a device for measuring oxygen concentration in flue gas by inserting it into the flue or furnace of various combustion furnaces. The present invention relates to an industrial gas measuring device suitable for use.

(従来の技術) この種の従来装置については、実開昭58−17054
6号公開実用新案公報に示されている。次に、この測定
装置について、第7図を参照しつつ説明する。
(Prior art) Regarding this type of conventional device,
This is shown in Public Utility Model Publication No. 6. Next, this measuring device will be explained with reference to FIG.

煙道の炉壁1に形成された開口2に挿通位置され、プロ
ーブ3が設けられているとともに、このプローブ3は円
筒管4より構成されている。この円筒管4の先端開口部
5は、図示されるように側面視において、ハの字状に形
成されてガス流路中に突出されているとともに、基部に
はガス検出具6が設けられている。また、この円筒管4
の内部空間には、図示されるガス流動方向において2分
するように、仕切板7が設けられている。これにより、
ガス流入路8と排出路9とが形成されていIる。さらに
、この仕切板7に連設されて、前記先端開口部5におい
て、円筒管4の内部空間から突出される状態で、ガス流
動方向に向って傾斜される傾斜板10が設けられている
。したがって、被測定ガスである排ガスは、図示される
ように、傾斜板10等より捕らえられて流入路8に案内
され、前記ガス検出具6に接して、その後排出路9を通
って再び煙道内に排出される。
A probe 3 is inserted through an opening 2 formed in a furnace wall 1 of the flue, and the probe 3 is constituted by a cylindrical tube 4. As shown in the figure, the tip opening 5 of the cylindrical tube 4 is formed in a V-shape and protrudes into the gas flow path, and a gas detection device 6 is provided at the base. There is. Also, this cylindrical tube 4
A partition plate 7 is provided in the internal space so as to divide it into two in the illustrated gas flow direction. This results in
A gas inlet passage 8 and an exhaust passage 9 are formed. Furthermore, an inclined plate 10 that is connected to the partition plate 7 and is inclined toward the gas flow direction is provided at the tip opening 5 so as to protrude from the internal space of the cylindrical tube 4. Therefore, as shown in the figure, the exhaust gas, which is the gas to be measured, is captured by the inclined plate 10 and the like, guided to the inflow path 8, comes into contact with the gas detection device 6, and then passes through the exhaust path 9 and enters the flue again. is discharged.

(発明が解決しようとする問題点) しかしながら、このものにおいては、傾斜板10等によ
って排ガスが捕らえられて流入路8に案内される一方、
排ガス中に含まれるダストも同様に積掻的に捕らえられ
て流入路8に案内されることになる。したがって、この
ダストは、プローブ3(円筒管4)内に溜まるとともに
、ガス検出具6に付着して、測定能力を劣化させるとい
う問題点を生じさせる。
(Problems to be Solved by the Invention) However, in this device, while the exhaust gas is captured by the inclined plate 10 and the like and guided to the inlet passage 8,
The dust contained in the exhaust gas is similarly trapped and guided into the inlet passage 8. Therefore, this dust accumulates in the probe 3 (cylindrical tube 4) and adheres to the gas detection device 6, causing a problem of deteriorating the measurement ability.

本発明は、このような問題点を解消する目的でなされた
ものである。
The present invention has been made to solve these problems.

(問題点を解決するための手段) 本発明は、前記目的を達成するために、雰囲気中の被測
定ガスの流動方向に向って開口するオリフィスを設け、
このオリフィスに対して前記被測定ガスの上流側にガス
取込み口を設け、またその下流側にガス排出口を設ける
とともに、前記被測定ガスが前記ガス取込み口からガス
排出口に至る間にその被測定ガスに接するようにガス検
出具を設けることを特徴とするものである。
(Means for Solving the Problems) In order to achieve the above object, the present invention provides an orifice that opens in the flow direction of the gas to be measured in the atmosphere,
A gas intake port is provided on the upstream side of the gas to be measured with respect to the orifice, and a gas discharge port is provided on the downstream side thereof, and the gas to be measured is This method is characterized in that a gas detection tool is provided in contact with the measurement gas.

(作 用) ガスの流動方向に向って開口するオリフィスが設けられ
ることから、このオリフィスに対して被測定ガスの上流
側に位置するガス取込み口には正圧域が、またその下流
側に位置するガス排出口には負圧域が生じる。したがっ
て、正圧域および負圧域にもとづく被測定ガスに対する
装置への取込み力および装置からの排出力が形成される
(Function) Since an orifice is provided that opens in the direction of gas flow, there is a positive pressure area at the gas intake port located upstream of the gas to be measured with respect to this orifice, and a positive pressure area located downstream of the orifice. A negative pressure area is created at the gas outlet. Therefore, a force for taking in the gas to be measured into the device and a force for discharging it from the device are formed based on the positive pressure region and the negative pressure region.

被測定ガス中に含まれるダストは、ガスに較べて比較的
にfflが大で慣性力が大であるために、ガス取込み口
から取り込まれずに、ガスの流動方向に向って開口する
オリフィスを介して直接に排出することが可能になる。
Since the dust contained in the gas to be measured has a relatively large ffl and a large inertial force compared to the gas, it is not taken in through the gas intake port, but rather through the orifice that opens in the direction of gas flow. This makes it possible to discharge directly.

(実施例) 次に、本発明による工業用ガス測定装置の具体的一実施
例につき、第1図乃至第3図を参照しつつ説明する。
(Example) Next, a specific example of the industrial gas measuring device according to the present invention will be described with reference to FIGS. 1 to 3.

図面において、被測定ガスである例えば、燃焼排ガスを
採用するプローブ20は、燃焼炉の煙道の炉壁21に形
成される開口22に挿通位置されて設けられているとと
もに、取付はフランジ23を介して炉壁21に取り付け
られている。このプローブ20は、図示されるガス流動
方向Aに対して、同様に図示されるその軸線Xが垂直と
なるように配される円筒管24等により構成されている
。この円筒管24の左端側の先端開口部25は、ガス流
路内に位置されているとともに、右端側の基部26には
ガス検出具27が設けられている。
In the drawing, a probe 20 that employs a gas to be measured, for example, combustion exhaust gas, is inserted into an opening 22 formed in a furnace wall 21 of a flue of a combustion furnace, and is attached using a flange 23. It is attached to the furnace wall 21 via. The probe 20 is composed of a cylindrical tube 24 and the like arranged so that its axis X, which is also shown, is perpendicular to the gas flow direction A, which is shown. A tip opening 25 on the left end side of this cylindrical tube 24 is located within the gas flow path, and a gas detection tool 27 is provided on the base 26 on the right end side.

前記円筒管24の内部空間には、この空間をガス流動方
向Aに2分するようにして、前記軸線Xに沿って仕切板
28が設けられている。これにより、先端開口部25が
ガス取込み口29とガス排出口30とに分けられている
とともに、この先端開口部25のガス取込み口29から
採取される被測定ガスを前記ガス検出具27に導(流入
路31と、この被測定ガスをガス検出具27に接した後
に前記先端開口部25のガス排出口30を介して再び煙
道内に排出する排出路32とが形成されている。また、
この仕切板28に円筒管24の内部空間から突出される
状態で、ガス流動方向Aに折れ曲がるようにして連設さ
れる傾斜板33が設けられている。さらに、この傾斜板
33の先端との間に、その先端に沿ってスリット状の長
孔34が形成されるように、先端開口部25に対向して
円盤状の対向板35が設けられている。前記傾斜板33
は、第2図に示されるように、円筒管24の両側部から
延出される周壁の舌片部36.36により、溶接等の固
着手段を介して支持されている。また、対向板35は、
舌片部36.36夫々に穿設された前記軸線Xに沿う一
対の長孔37.37を介して、ネジ38によって舌片部
36.36に固定支持されている。したがって、これら
傾斜板33、対向板35および舌片部36.36によっ
て、ガス流動方向Aに開口するオリフィスである長孔3
4が形成されている。なお、39は、ダストが流入路3
1内に入るのを阻止する邪魔板である。
A partition plate 28 is provided in the internal space of the cylindrical tube 24 along the axis X so as to divide the space into two in the gas flow direction A. As a result, the tip opening 25 is divided into a gas intake port 29 and a gas discharge port 30, and the gas to be measured sampled from the gas intake port 29 of this tip opening 25 is guided to the gas detection tool 27. (An inflow path 31 and a discharge path 32 are formed which discharge the gas to be measured into the flue again through the gas discharge port 30 of the tip opening 25 after coming into contact with the gas detection tool 27.
An inclined plate 33 is provided on the partition plate 28 so as to protrude from the inner space of the cylindrical tube 24 and to be bent in the gas flow direction A. Further, a disk-shaped opposing plate 35 is provided opposite the tip opening 25 so that a slit-shaped long hole 34 is formed along the tip between the inclined plate 33 and the tip. . The inclined plate 33
As shown in FIG. 2, is supported by tongue portions 36, 36 of the peripheral wall extending from both sides of the cylindrical tube 24 via fixing means such as welding. Further, the facing plate 35 is
It is fixedly supported on the tongue portion 36.36 by a screw 38 through a pair of elongated holes 37.37 along the axis X that are bored in each of the tongue portions 36.36. Therefore, the long hole 3, which is an orifice opening in the gas flow direction A, is formed by the inclined plate 33, the opposing plate 35, and the tongue portion 36.
4 is formed. Note that 39 indicates that the dust is inflow path 3.
This is a baffle plate that prevents people from entering the room.

前記ガス検出具27は、保護キャップで被われた例えば
酸素濃度センサ素子である検出部40と、この検出部4
0を収納するとともに測定空間を形成する筒状部41と
、この筒状部41の先端部に配されるセラミックフィル
タ42とから構成されている。前記検出部40は、筒状
部41の右端側の基端側からねじ込みによって筒状部4
1内に挿入位置されて固定されている。また、ガス検出
具27は、前記円筒管24のフランジ23の開口44と
筒状部41の先端外周とを螺合させることによって円筒
管24に固着されている。なお、45はガス検出具27
に校正用ガスを供給する校正ガス供給器であるとともに
、46.4T夫々は、検出部40に基準空気を供給する
空気孔、および検出部40からの信号等のリード線であ
る。
The gas detection device 27 includes a detection section 40, which is, for example, an oxygen concentration sensor element covered with a protective cap, and a detection section 40, which is an oxygen concentration sensor element covered with a protective cap.
It is composed of a cylindrical part 41 that accommodates 0 and forms a measurement space, and a ceramic filter 42 disposed at the tip of this cylindrical part 41. The detection part 40 is inserted into the cylindrical part 4 by screwing from the base end side of the right end side of the cylindrical part 41.
1 and is fixed in the inserted position. Further, the gas detection device 27 is fixed to the cylindrical tube 24 by screwing together the opening 44 of the flange 23 of the cylindrical tube 24 and the outer periphery of the distal end of the cylindrical portion 41 . In addition, 45 is the gas detection tool 27
46.4T is a calibration gas supply device that supplies calibration gas to the detector 40, and each of 46.4T is an air hole that supplies reference air to the detection unit 40 and a lead wire for signals from the detection unit 40.

以上から、オリフィス、詳しくはオリフィスを形成する
傾斜板33に対して上流側に位置する上部空間48には
正圧域が生じ、またその下流側に位置する下部空間49
には負圧域が生じる。これら正圧域および負圧域にもと
づく被測定ガスのガス取込み口29への取込み力、また
ガス排出口30からの排出力が相撲って、被測定ガスの
ガス検出具27へのガス取り込みが容易に行われる。ま
た、ガス取り込みが容易で、速やかに被測定ガスがガス
検出具27に到達するために、ガス検出の応答が早くな
る。
From the above, a positive pressure area is generated in the upper space 48 located upstream of the orifice, more specifically, the inclined plate 33 forming the orifice, and the lower space 49 located downstream thereof.
A negative pressure region occurs. The force of taking in the gas to be measured into the gas intake port 29 and the force of ejecting the gas from the gas outlet 30 based on these positive pressure areas and negative pressure areas work together, and the gas to be measured is taken into the gas detection device 27. easily done. In addition, since the gas is easily taken in and the gas to be measured quickly reaches the gas detection tool 27, the response of gas detection becomes faster.

また、被測定ガス中に含まれるダストは、ガスに較べて
比較的に質量が大でti性力が大なるために、傾斜板3
3に案内されて長孔34から直接に排出される。比較的
に質量が小なるダストも邪魔板39に阻止されて、長孔
34から排出される。したがって、プローブ20の円筒
管24でのダストの溜まりにくくなるとともに、ガス検
出具27、詳しくはフィルタ42への付着が少なくなり
、測定能力の劣化が阻止される。なお、取り込まれるダ
ストは、比較的重量が軽いダストのみになるため、速や
かに円筒管24外に排出される。
In addition, since the dust contained in the gas to be measured has a relatively large mass and a large Ti force compared to the gas, the inclined plate 3
3 and is directly discharged from the elongated hole 34. Even dust whose mass is relatively small is blocked by the baffle plate 39 and discharged from the elongated hole 34. Therefore, it becomes difficult for dust to accumulate in the cylindrical tube 24 of the probe 20, and the amount of dust attached to the gas detection device 27, specifically, the filter 42, is reduced, and deterioration of the measurement ability is prevented. Note that since the dust that is taken in is only relatively light in weight, it is quickly discharged out of the cylindrical tube 24.

さらに、被測定ガスの煙道での流速により、対向板35
を平行移動させて長孔34のスリット巾を調節すること
により、ガス取込み量を容易に調節でき、適正な測定を
行うことができる。
Furthermore, depending on the flow velocity of the gas to be measured in the flue, the opposing plate 35
By adjusting the slit width of the elongated hole 34 by moving in parallel, the amount of gas taken in can be easily adjusted and appropriate measurements can be performed.

なお、本実施例では、ガス検出具27を検出部40と、
筒状部41と、フィルタ42とから構成したが、少なく
とも検出部40より構成されておればよいことはいうま
でもない。
In addition, in this embodiment, the gas detection tool 27 is the detection part 40,
Although it is composed of the cylindrical part 41 and the filter 42, it goes without saying that it is sufficient that it is composed of at least the detection part 40.

次に、変形例を第4図乃至第6図を参照しつつ説明する
が、前記実施例と同一符号は同一内容を示し、重複する
説明は省略する。
Next, a modified example will be explained with reference to FIGS. 4 to 6. The same reference numerals as in the above embodiment indicate the same contents, and redundant explanation will be omitted.

図面において、円筒管24の先端開口部25には、この
先端開口部25に螺合によって嵌合される円盤状の蓋部
50と、この蓋部50に溶接等によって固着される柱状
体の半割り形状のオリフィス部51とから構成されるオ
リフィス蓋体52が設けられている。
In the drawing, the tip opening 25 of the cylindrical tube 24 includes a disk-shaped lid 50 that is screwed into the tip opening 25, and a columnar half that is fixed to the lid 50 by welding or the like. An orifice cover body 52 is provided which is composed of a split-shaped orifice portion 51.

この蓋部50には、前記流入路31および排出路32夫
々に対応させてガス取込み口29′およびガス排出口3
0′が設けられている。また、オリフィス部51には、
これらガス取込み口29′およびガス排出口30′夫々
に対応させて、連通ずる上部空間48′および下部空間
49′が形成されているとともに、雨空間48’、49
’の間には流動方向Aに向って開口するオリフィスであ
る孔53が形成されている。すなわち、オリフィス部5
1は、ガス流動方向Aにおいて、孔53に向って先窄ま
りになる周壁面により上部空間48′が形成されている
とともに、孔53から先広がりになる周壁面により下部
空間49′が形成されている。
The lid portion 50 includes a gas intake port 29' and a gas discharge port 3 corresponding to the inflow path 31 and the discharge path 32, respectively.
0' is provided. In addition, the orifice portion 51 includes
An upper space 48' and a lower space 49' which communicate with each other are formed corresponding to the gas intake port 29' and the gas discharge port 30', respectively, and rain spaces 48', 49' are formed.
A hole 53, which is an orifice that opens in the flow direction A, is formed between '. That is, the orifice portion 5
1, in the gas flow direction A, an upper space 48' is formed by a peripheral wall surface that tapers toward the hole 53, and a lower space 49' is formed by a peripheral wall surface that widens from the hole 53. ing.

したがって、ガス取込み口29′、ガス排出口30’お
よび孔53の開口面積の異なるオリフィス蓋体52を複
数個準備しておき、被測定ガスの煙道での流速により適
宜選択することによって、ガス取込み量を容易に調整で
きるようになる。
Therefore, by preparing a plurality of orifice lids 52 with different opening areas for the gas intake port 29', the gas discharge port 30', and the hole 53, and selecting the appropriate one depending on the flow rate of the gas to be measured in the flue, the gas The amount of intake can be easily adjusted.

(発明の効果) 正圧域および負圧域にもとづ(被測定ガスに対する取込
み力および排出力が相撲って、被測定ガスのガス検出具
へのガス取り込みが容易になる。
(Effects of the Invention) Based on the positive pressure region and the negative pressure region (the intake force and the exhaust force for the gas to be measured are balanced, it becomes easy to take the gas to be measured into the gas detection tool).

また、ガス取り込みが容易であることから、被測定ガス
が速やかにガス検出具に到達するために、ガス検出の応
答が早くなる。
Furthermore, since the gas can be taken in easily, the gas to be measured quickly reaches the gas detection tool, resulting in a faster response for gas detection.

さらに、ダストがオリフィスを介して直接に排出するこ
とが可能であるために、ガス取込み口からガス排出口に
至る間でのダストの溜り、ガス検出具への付着を少なく
することができる。
Further, since the dust can be directly discharged through the orifice, it is possible to reduce the accumulation of dust between the gas intake port and the gas discharge port and the amount of dust attached to the gas detection tool.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図乃至第3図は、本発明による工業用ガス測定装置
の具体的一実施例を説明する図面であって、第1図は断
面図、 第2図は側面図、 第3図は正面図である。 第4図乃至第6図は、本発明による工業用ガス測定装置
の変形例を説明するための図面であって、第4図は断面
図、 第5図は正面図、 第6図は一部の斜視図である。 さらに、第7回は、従来例を説明するための図面である
。 27・・・ガス検出具    29・・・ガス取込み口
30・・・ガス排出口    34・・・長孔53・・
・孔 特許出願人  日本碍子株式会社 代理人弁理士  杉 村 暁 秀 同  弁  理  士    杉   村   興  
 作第7図
1 to 3 are drawings illustrating a specific embodiment of the industrial gas measuring device according to the present invention, in which FIG. 1 is a sectional view, FIG. 2 is a side view, and FIG. 3 is a front view. It is a diagram. 4 to 6 are drawings for explaining modified examples of the industrial gas measuring device according to the present invention, in which FIG. 4 is a sectional view, FIG. 5 is a front view, and FIG. 6 is a partial view. FIG. Furthermore, the seventh issue is a drawing for explaining a conventional example. 27... Gas detection tool 29... Gas intake port 30... Gas discharge port 34... Long hole 53...
・Kou patent applicant Nippon Insulator Co., Ltd. Representative Patent Attorney: Hidetoshi Sugimura Patent Attorney: Oki Sugimura
Figure 7

Claims (1)

【特許請求の範囲】[Claims] 1、雰囲気中の被測定ガスの流動方向に向って開口する
オリフィスを設け、このオリフィスに対して前記被測定
ガスの上流側にガス取込み口を設け、またその下流側に
ガス排出口を設けるとともに、前記被測定ガスが前記ガ
ス取込み口から排出口に至る間にその被測定ガスに接す
るようにガス検出具を設けることを特徴とする工業用ガ
ス測定装置。
1. Provide an orifice that opens in the flow direction of the gas to be measured in the atmosphere, provide a gas intake port on the upstream side of the gas to be measured with respect to this orifice, and provide a gas discharge port on the downstream side thereof. . An industrial gas measuring device, characterized in that a gas detection tool is provided so as to be in contact with the gas to be measured while the gas to be measured travels from the gas intake port to the discharge port.
JP61206688A 1986-09-04 1986-09-04 Industrial gas measuring apparatus Pending JPS6363937A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61206688A JPS6363937A (en) 1986-09-04 1986-09-04 Industrial gas measuring apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61206688A JPS6363937A (en) 1986-09-04 1986-09-04 Industrial gas measuring apparatus

Publications (1)

Publication Number Publication Date
JPS6363937A true JPS6363937A (en) 1988-03-22

Family

ID=16527465

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61206688A Pending JPS6363937A (en) 1986-09-04 1986-09-04 Industrial gas measuring apparatus

Country Status (1)

Country Link
JP (1) JPS6363937A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1179726A2 (en) * 2000-08-11 2002-02-13 NGK Spark Plug Company Limited Split-flow-type flowmeter
US6474177B2 (en) 2000-03-13 2002-11-05 Ngk Spark Plug Co., Ltd. Flow measurement device for measuring flow rate and flow velocity
JP2006047272A (en) * 2004-06-29 2006-02-16 Ngk Spark Plug Co Ltd Flow sensor
JP2010261771A (en) * 2009-05-01 2010-11-18 Denso Corp Device for measurement of air flow rate
US8146445B2 (en) * 2008-02-25 2012-04-03 Delta Measurement And Combustion Controls, Llc Extractive probe for hot flue gas and process measurement
JP2012145523A (en) * 2011-01-14 2012-08-02 Miura Co Ltd Exhaust gas measuring device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59212756A (en) * 1983-05-18 1984-12-01 Fuji Electric Co Ltd Gas analyzer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59212756A (en) * 1983-05-18 1984-12-01 Fuji Electric Co Ltd Gas analyzer

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6474177B2 (en) 2000-03-13 2002-11-05 Ngk Spark Plug Co., Ltd. Flow measurement device for measuring flow rate and flow velocity
EP1179726A2 (en) * 2000-08-11 2002-02-13 NGK Spark Plug Company Limited Split-flow-type flowmeter
EP1179726A3 (en) * 2000-08-11 2007-01-17 NGK Spark Plug Company Limited Split-flow-type flowmeter
JP2006047272A (en) * 2004-06-29 2006-02-16 Ngk Spark Plug Co Ltd Flow sensor
US8146445B2 (en) * 2008-02-25 2012-04-03 Delta Measurement And Combustion Controls, Llc Extractive probe for hot flue gas and process measurement
JP2010261771A (en) * 2009-05-01 2010-11-18 Denso Corp Device for measurement of air flow rate
JP2012145523A (en) * 2011-01-14 2012-08-02 Miura Co Ltd Exhaust gas measuring device

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