JPS61748A - Malodor gas density measuring apparatus - Google Patents
Malodor gas density measuring apparatusInfo
- Publication number
- JPS61748A JPS61748A JP12066084A JP12066084A JPS61748A JP S61748 A JPS61748 A JP S61748A JP 12066084 A JP12066084 A JP 12066084A JP 12066084 A JP12066084 A JP 12066084A JP S61748 A JPS61748 A JP S61748A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- temperature
- measuring section
- malodorous
- concentration
- 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
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 230000008859 change Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 8
- 238000001514 detection method Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 51
- 238000010586 diagram Methods 0.000 description 9
- 239000010955 niobium Substances 0.000 description 8
- 239000010936 titanium Substances 0.000 description 7
- 229910052758 niobium Inorganic materials 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 229910052719 titanium Inorganic materials 0.000 description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 3
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 2
- 230000001877 deodorizing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 229910052586 apatite Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical compound [F-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
- G01N33/0016—Sample conditioning by regulating a physical variable, e.g. pressure or temperature
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発ａ）Ｉは、硫化水素、メチルメルカプタンなどの悪
臭ガス濃度を検知する悪臭ガス濃度計測装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] A) I of the present invention relates to a malodorous gas concentration measuring device for detecting the concentration of malodorous gases such as hydrogen sulfide and methyl mercaptan.
第３図は従来の悪臭ガス■度計測装置の一例を示すブロ
ック図である。（１）はチタン、ニオブの複合酸化物（
、チタン、ニオブの混合比は１：２）を主成分とする感
ガス材よりなる素子基板Ｎ （２） 、 （２）は素子
基板（１）に設けられたＲｕｎｇを主成分とする一対の
電極であり、（３）は素子基板（１）、電極（２） 、
（２）により構成された感ガス素子である。（４）は
感ガス素子（３）を加熱するためのヒータであシ、感ガ
ス素子（３）の周囲゛を取り囲むように配置されている
。、（５）は感ガス素子（３）、ヒータ（４）により構
成された計測部で、この計測部（５）は被測定ガスを吸
引する（ａ）で示される配管中に設けられている。（６
）はヒータ（４）用の電源であり、（Ｓｓ）で示される
リード線によってヒータ（４）と接続されている。（７
）は電極（２）間の電気抵抗文は電流を検知するための
検知器であり、（７ｇ）で示されるリード線により電極
（２） 、 （２）と接、続されている。（８）は検知
器（７）の出力を悪臭ガス濃度に換算するための演算器
で、（８ｇ）で示される信号線により検知器（７）と接
続されている。（９）は悪臭ガス濃度を表示するための
表示装置であり （９ｓ）で示される信号線により演算
器（８）と接続されている。FIG. 3 is a block diagram showing an example of a conventional malodorous gas temperature measuring device. (1) is a composite oxide of titanium and niobium (
, titanium, and niobium (with a mixing ratio of 1:2) as the main components. (3) is an element substrate (1), an electrode (2),
This is a gas-sensitive element constructed by (2). (4) is a heater for heating the gas-sensitive element (3), and is arranged so as to surround the periphery of the gas-sensitive element (3). , (5) is a measuring section composed of a gas sensing element (3) and a heater (4), and this measuring section (5) is installed in the piping shown in (a) that sucks the gas to be measured. . (6
) is a power source for the heater (4), and is connected to the heater (4) by a lead wire indicated by (Ss). (7
) is a detector for detecting the electric current between the electrodes (2), and is connected to the electrodes (2) and (2) by a lead wire indicated by (7g). (8) is a computing unit for converting the output of the detector (7) into malodorous gas concentration, and is connected to the detector (7) by a signal line indicated by (8g). (9) is a display device for displaying the concentration of malodorous gas, and is connected to the computing unit (8) by a signal line indicated by (9s).
上記のように構成し穴従来の悪臭ガス濃度計測装置によ
る悪臭成分濃度の測定原理は以下に示す通シである。ま
ず悪臭成分を含む被測定ガス中に設けられた感ガス素子
（３）は、測定感度、応答速度を考慮して、感ガス素子
（３）の周囲に配置されたヒータ（４）の入力をリード
ＩＩ（６ｇ）により接続された電源（６）により調節し
、所定の温度となるように加熱する。この状態で、素子
基板（１）の表面において、被測定ガス中に含まれる悪
臭成分は吸着・反応・イオン化し、第４図に示すように
悪臭成分濃度に応じた電極（２）間の電気抵抗変化を生
ずる。この抵抗変化量より悪臭成分濃度が測定される。The principle of measuring the concentration of malodorous components using the conventional malodorous gas concentration measuring device configured as described above is as follows. First, the gas-sensitive element (3) installed in the gas to be measured containing malodorous components receives input from the heater (4) placed around the gas-sensitive element (3), taking measurement sensitivity and response speed into consideration. It is heated to a predetermined temperature by adjusting it with a power source (6) connected through lead II (6g). In this state, the malodorous components contained in the gas to be measured are adsorbed, reacted, and ionized on the surface of the element substrate (1), and as shown in Figure 4, an electric current is generated between the electrodes (2) according to the concentration of malodorous components. Causes resistance change. The concentration of malodorous components is measured from this amount of change in resistance.
いま、悪臭ガス発生源よりファン等の吸引装置により配
管（ａ）中に被測定ガスが熱料されると、配管（ａ）中
に設けられた感ガス素子（３）Ｋより被測定ガス中に含
まれる悪臭成分濃度に応じて、電極（２） 、 （２’
１間に電気抵抗の変化を生ずる。この抵抗変化を電極（
２）とリード線（７ｓ）により接続された検知器（７）
Ｋより検知し、さらに検知器（７）と信号線（８ｓ）で
接続された演算器（８）で予め定められた演算式により
演算し、悪臭成分濃度として表示器（８）により表示す
る。Now, when the gas to be measured is heated in the pipe (a) by a suction device such as a fan from the source of the malodorous gas, the gas to be measured is heated by the gas sensing element (3) K provided in the pipe (a). Depending on the concentration of malodorous components contained in the electrode (2), (2'
A change in electrical resistance occurs over a period of 1 hour. This resistance change is measured by the electrode (
2) and a detector (7) connected by a lead wire (7s)
The malodorous component is detected by K, and is further calculated by a predetermined calculation formula in a calculation unit (8) connected to the detector (7) by a signal line (8s), and is displayed as the malodorous component concentration on a display (8).
上記のように構成した従来の悪臭濃度計測定装置によれ
ば、被測定ガスの流量・ガスの温度の変化に伴い、感ガ
ス素子（３）表面の温度変化がおこってしまう。即ち、
第５図に示すように感ガス素子（３）表面の温度変化に
ともなって電気抵抗が変化することになる。従って被測
定ガスの流量・温度等の差異によって感ガス素子（３）
の表面温度が変化すると、精度の良い濃度測定が出来な
いという欠点があった。そのため、脱臭プロセスの監視
、制御を精度よく安定して行なうことは困難であった。According to the conventional malodor concentration meter measuring device configured as described above, the temperature on the surface of the gas-sensitive element (3) changes as the flow rate and temperature of the gas to be measured change. That is,
As shown in FIG. 5, the electrical resistance changes as the temperature on the surface of the gas-sensitive element (3) changes. Therefore, depending on the difference in flow rate, temperature, etc. of the gas to be measured, the gas sensing element (3)
The disadvantage is that if the surface temperature changes, accurate concentration measurements cannot be made. Therefore, it has been difficult to accurately and stably monitor and control the deodorizing process.
本発明は、上記のような欠点を解決するためになされた
もので、計測部の温度を計測して、加熱手段の出力調節
あるいは電気抵抗値、電流値を修正することにより、い
かなる条件においても精度よい測定ができる悪臭濃度測
定装置を得るため、一対の電極と、該電極間に配置され
た感ガス材で構成される感ガス素子と、該感ガス素子を
加熱する手段とを有し、前記電極間の電気抵抗又は電流
の変化量により悪臭濃度を検知する悪臭ガス濃度計測装
置において、前記感ガス素子及び該感ガス素子の加熱手
段で構成される計測部の温度を計測する手段を有し、計
測された温度に応じて加熱手段の出力を調節する機構を
備えた悪臭ガス一度計測装置を提供するものである。The present invention was made to solve the above-mentioned drawbacks, and by measuring the temperature of the measuring section and adjusting the output of the heating means or correcting the electric resistance value and current value, the present invention can be used under any conditions. In order to obtain a malodor concentration measuring device that can perform accurate measurement, the device includes a pair of electrodes, a gas-sensitive element made of a gas-sensitive material disposed between the electrodes, and means for heating the gas-sensitive element, The malodorous gas concentration measuring device that detects malodor concentration based on the amount of change in electric resistance or current between the electrodes, further comprising means for measuring the temperature of a measuring section comprising the gas sensing element and heating means for the gas sensing element. The present invention also provides a malodorous gas measuring device that is equipped with a mechanism that adjusts the output of the heating means in accordance with the measured temperature.
さらにまた、本発明は、悪臭ガス両度計測装置において
、
前記感ガス素子及び該感ガス素子の加熱手段で構成され
る計測部の温度を計測する手段を有し、予め定められた
演算式により計測された感ガス素子表面温度、前記電気
抵抗値又は電流値の変化量を用いて悪臭ガスＳ度を清算
する演算回路を備えた悪臭ガス濃度計測装置を提供する
ものである。Furthermore, the present invention provides a malodorous gas temperature measuring device, comprising a means for measuring the temperature of a measuring section constituted by the gas-sensitive element and a heating means for the gas-sensitive element, and according to a predetermined calculation formula. The present invention provides a malodorous gas concentration measuring device equipped with an arithmetic circuit that calculates the S degree of malodorous gas using the measured gas-sensitive element surface temperature, the electrical resistance value, or the amount of change in the current value.
第１図は本発明の実施例を示すブロック図である。なお
第３図と同じ機能の部分には同じ記号を符し、説明を省
略する。０１は計測部（５）の温度を計測するための熱
電対で、（１０ｇ）で示される信号線によりｕで示され
る温度調節器に接続されておシ、温度調節器ａυは（Ｉ
Ｉｇ）で示される信号線を介してヒータ用電源（６）に
接続されている。FIG. 1 is a block diagram showing an embodiment of the present invention. Note that parts having the same functions as those in FIG. 3 are denoted by the same symbols, and explanations thereof will be omitted. 01 is a thermocouple for measuring the temperature of the measuring part (5), which is connected to the temperature regulator indicated by u by the signal line indicated by (10g), and the temperature regulator aυ is (I
It is connected to a heater power source (6) via a signal line indicated by Ig).
上記のように構成した本実施例の作用を説明すれば次の
通夛そある。配管（＆）中を流れる被測定ガスの流量、
ガス塩の変化等により計測部（５）の温度が変化した場
合、熱電対α１により計測部（５）の温度を検知する。The operation of this embodiment configured as described above can be explained as follows. The flow rate of the gas to be measured flowing through the piping (&),
When the temperature of the measuring section (5) changes due to a change in gas salt, etc., the temperature of the measuring section (5) is detected by the thermocouple α1.
検知された温度は信号線（１０ｇ）により温度調節器Ｑ
ｌ）に送られ、さらに信号線（１１ｇ）により計測部（
５）の温度が所定の温度となるようヒータ用電源（６）
の出力を調節する。The detected temperature is sent to the temperature controller Q via a signal line (10g).
l), and is further sent to the measurement unit (11g) via the signal line (11g).
Heater power supply (6) so that the temperature of 5) becomes the predetermined temperature.
Adjust the output.
なお上記以外の作用は第３図において説明した場合と同
様である。Note that the operations other than those described above are the same as those described in FIG. 3.
上記のように本実施例においては、計測部（５）の温度
を一定に保つようにしたので、悪臭成分濃度を風速、ガ
ス温が変化しｆｃ場合でも精度よく測定できる。As described above, in this embodiment, the temperature of the measuring section (5) is kept constant, so that the malodorous component concentration can be measured with high accuracy even when the wind speed and gas temperature change.
第２図は本発明の他の実施例を示すブロック図である。FIG. 2 is a block diagram showing another embodiment of the invention.
なお第１図と同じ機能の部分には同じ記号を付し説明を
省略する。本実施例においては、（１０ｉｓ）で示され
る信号線が演算器（８）に接続でれている。Note that parts having the same functions as those in FIG. 1 are given the same symbols, and explanations thereof will be omitted. In this embodiment, the signal line indicated by (10is) is connected to the arithmetic unit (8).
上記のように構成した本実施例の作用を説明すれば次の
通りである。まず配管（ａ）中を流れる被測定ガスの流
量、ガス温の変化により計測部（５）の温度が変化した
場合、熱電対α０により計測部（５）の温度を検知する
。検知された温度は信号線（１０ｉｓ）により演算器（
８）に送られ、演算器（８）で第５図に示す温度特性図
を用いて電気抵抗値を修正し、悪臭ガス成分濃度を定め
る。The operation of this embodiment configured as described above will be explained as follows. First, when the temperature of the measuring section (5) changes due to changes in the flow rate and gas temperature of the gas to be measured flowing through the pipe (a), the temperature of the measuring section (5) is detected by the thermocouple α0. The detected temperature is sent to the arithmetic unit (
8), the electric resistance value is corrected by the calculator (8) using the temperature characteristic diagram shown in FIG. 5, and the malodorous gas component concentration is determined.
なお、上記以外の作用は第３図において説明した場合と
同様である。Note that the operations other than those described above are the same as those described in FIG. 3.
以上のように本実施例においては、計測部（５）の温度
を計測して、電極（２）間の電気抵抗値を修正するよう
にしたので、風速、ガス温が変化し計測部（５）の温度
が変化した場合でも、悪臭成分濃度を精度よく測定でき
ることになる。As described above, in this embodiment, the temperature of the measuring part (5) is measured and the electrical resistance value between the electrodes (2) is corrected. ) Even if the temperature changes, the concentration of malodorous components can be measured with high accuracy.
上記の説明では、素子基板に感ガス材を用いた場合につ
いて示したが、素子基板にアパタイト系セラミックスを
用い、新たに電極間に感ガス材を配置した構造としても
よい。また上記の説明では素子基板の温度を測定したが
、計測部内、例えばヒータ表面、ヒータと感ガス素子の
間の空間の温度を計測してもよい。さらに表示装置によ
る濃度表示を行なう場合を示したが、計測信号を制御装
置に入力し、脱臭装置の吸引風量等の制御をおこなって
もよい。また、上記の説明ではチタンとニオブの混合比
（Ｔｉ／Ｎｂ ）が１７２の感ガス材について示したが
、使用できるガス材としては金属酸化物および金属の複
合酸化物がちシ、金属としては例えばＴｌ 、 Ｎｂ
＃ Ｚｎ ＊ Ｓｎ ＃ Ｆｅ等がある。また金属の複
合酸化物としてはＴｉ、Ｎｂの複合酸化物が好ましくさ
らには、ＴＩとＮｂの混合比（Ｔｉ／Ｎｂ ）が１７６
〜６／１の範囲が特に好ましい。In the above description, a case is shown in which a gas-sensitive material is used for the element substrate, but a structure may also be adopted in which an apatite-based ceramic is used for the element substrate and a gas-sensitive material is newly disposed between the electrodes. Further, in the above description, the temperature of the element substrate is measured, but the temperature inside the measuring section, for example, the surface of the heater or the space between the heater and the gas-sensitive element may be measured. Further, although the case where the concentration is displayed by the display device has been shown, the measurement signal may be inputted to the control device to control the suction air volume of the deodorizing device, etc. In addition, in the above explanation, the gas-sensitive material with a mixing ratio of titanium and niobium (Ti/Nb) of 172 was shown, but usable gas materials include metal oxides and composite oxides of metals, and examples of metals include Tl, Nb
#Zn*Sn#Fe etc. Further, as the metal composite oxide, a composite oxide of Ti and Nb is preferable, and furthermore, a mixture ratio of Ti and Nb (Ti/Nb) of 176
A range of 6/1 to 6/1 is particularly preferred.
以上の説明から明らかなように本発明によれば、悪臭ガ
スを計測する計測部の温度を計測し、加熱手段の出力調
節あるいは電極間の電気抵抗値、電流値を修正するよう
に構成したので、いかなる条件下においても精度のよい
測定ができるというきわめてすぐれた効果がある。As is clear from the above description, according to the present invention, the temperature of the measurement unit that measures malodorous gas is measured, and the output of the heating means is adjusted or the electric resistance value and current value between the electrodes are corrected. This method has the extremely advantageous effect of allowing highly accurate measurements under any conditions.
第１図は本発明の実施例を示すブロック図、第２図は本
発明の他の実施例を示すブロック図、第６図は従来の悪
臭ガス濃度計測装置の一例を示すブロック図、第４図“
は濃度と電気抵抗値の関係を示す線図、第５図は温度と
電気抵抗値の関係を示す線図である。
（１）・・・素子基板、（２）・・・電極、Ｃ３）・・
−感ガス素子、（４）・・・ヒータ、（５）・・・計測
部、（６）・・・電源、（７）・・・検知器、（８）・
・・演算器、（９）・・・表示装置、α１・・・熱電対
、＋１１）・・・温度調節器。
なお各図中同一符号は同一または相当部分を示すものと
する。
代理人 弁理士 木 村 三 朗
第１図
第２図
第３図
第４図 第５図
手続補正書FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a block diagram showing another embodiment of the present invention, FIG. 6 is a block diagram showing an example of a conventional malodorous gas concentration measuring device, and FIG. figure"
is a diagram showing the relationship between concentration and electrical resistance value, and FIG. 5 is a diagram showing the relationship between temperature and electrical resistance value. (1)...Element substrate, (2)...Electrode, C3)...
- Gas-sensitive element, (4)... Heater, (5)... Measuring unit, (6)... Power supply, (7)... Detector, (8)...
...Arithmetic unit, (9)...Display device, α1...Thermocouple, +11)...Temperature controller. Note that the same reference numerals in each figure indicate the same or corresponding parts. Agent Patent Attorney Sanro Kimura Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Procedural Amendment
昭和５９年 ９月２０日 September 20, 1982
Claims (2)
構成される感ガス素子と、該感ガス素子を加熱する手段
とを有し、前記電極間の電気抵抗又は電流の変化量より
悪臭濃度を検知する悪臭ガス濃度計測装置において、前
記感ガス素子及び該感ガス素子の加熱手段とで構成され
る計測部の温度を計測する手段を有し、計測された温度
に応じて加熱手段の出力を調節する機構を備えたことを
特徴とする悪臭ガス濃度計測装置。(1) A gas-sensitive element comprising a pair of electrodes, a gas-sensitive material disposed between the electrodes, and means for heating the gas-sensitive element, and changes in electrical resistance or current between the electrodes. A malodorous gas concentration measuring device that detects the concentration of malodor from the amount, comprising means for measuring the temperature of a measuring section composed of the gas-sensitive element and a heating means for the gas-sensitive element, and according to the measured temperature. A malodorous gas concentration measuring device characterized by comprising a mechanism for adjusting the output of a heating means.
構成される感ガス素子と、該感ガス素子を加熱する手段
とを有し、前記電極間の電気抵抗又は電流の変化量より
悪臭濃度を検知する悪臭ガス濃度計測装置において、前
記感ガス素子及びその加熱手段とで構成される計測部の
温度を計測する手段を有し、予め定められた演算式によ
り計測された感ガス素子表面温度、前記電気抵抗値又は
電流値の変化量を用いて悪臭ガス濃度を演算する演算回
路を備えたことを特徴とする悪臭ガス濃度計測装置。(2) A gas-sensitive element comprising a pair of electrodes, a gas-sensitive material disposed between the electrodes, and means for heating the gas-sensitive element, and changes in electrical resistance or current between the electrodes. A malodorous gas concentration measuring device that detects the concentration of malodor from the amount of malodor has a means for measuring the temperature of a measuring section composed of the gas sensing element and its heating means, A malodorous gas concentration measuring device characterized by comprising a calculation circuit that calculates malodorous gas concentration using the gas element surface temperature and the amount of change in the electric resistance value or the current value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12066084A JPS61748A (en) | 1984-06-14 | 1984-06-14 | Malodor gas density measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12066084A JPS61748A (en) | 1984-06-14 | 1984-06-14 | Malodor gas density measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61748A true JPS61748A (en) | 1986-01-06 |
Family
ID=14791737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12066084A Pending JPS61748A (en) | 1984-06-14 | 1984-06-14 | Malodor gas density measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61748A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5369695A (en) * | 1976-12-03 | 1978-06-21 | Shinagawa Furnace | Detector for offensive odor and harmful gases |
| JPS54114296A (en) * | 1978-02-27 | 1979-09-06 | Koukichi Nishimura | Device for measuring odor |
| JPS5514529B2 (en) * | 1976-12-25 | 1980-04-17 |
-
1984
- 1984-06-14 JP JP12066084A patent/JPS61748A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5369695A (en) * | 1976-12-03 | 1978-06-21 | Shinagawa Furnace | Detector for offensive odor and harmful gases |
| JPS5514529B2 (en) * | 1976-12-25 | 1980-04-17 | ||
| JPS54114296A (en) * | 1978-02-27 | 1979-09-06 | Koukichi Nishimura | Device for measuring odor |
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