JPH04130259A - Gas-concentration measuring apparatus - Google Patents

Gas-concentration measuring apparatus

Info

Publication number
JPH04130259A
JPH04130259A JP25211090A JP25211090A JPH04130259A JP H04130259 A JPH04130259 A JP H04130259A JP 25211090 A JP25211090 A JP 25211090A JP 25211090 A JP25211090 A JP 25211090A JP H04130259 A JPH04130259 A JP H04130259A
Authority
JP
Japan
Prior art keywords
gas
calibration
data
memory
measurement
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
JP25211090A
Other languages
Japanese (ja)
Inventor
Hideyuki Miki
三木 英之
Ryuzo Kano
龍三 加納
Shingo Sumi
心吾 角
Masaru Kozakura
優 小櫻
Hiroaki Matsuhisa
浩明 松久
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.)
Shimadzu Corp
Original Assignee
Shimadzu Corp
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 Shimadzu Corp filed Critical Shimadzu Corp
Priority to JP25211090A priority Critical patent/JPH04130259A/en
Publication of JPH04130259A publication Critical patent/JPH04130259A/en
Pending legal-status Critical Current

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  • 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

PURPOSE:To make it possible to read an indicating level in calibration definitely by relatively delaying the speed of the data of a standard gas in calibration when the data stored in a memory are outputted as analog signals, and outputting the data of the standard gas. CONSTITUTION:Before the measurement is started, a standard gas is introduced, and zero-span calibration is performed. The data of a detecting part 12 in calibration are sequentially stored in a gas-concentration memory 13. Then, a gas to be measured is introduced, and the measurement operation is started. The measured data are sequentially stored in the memory 13. After the measurement, the zero-span calibration is performed before the next measurement is started. The data in this calibration are stored into the memory 13 by the same way. After the measurement, the data stored in the memory 13 are outputted into a recorder 15 through an analog output part 14 and recorded in the chart of the recorder 15. At this time, the speed of the chart paper is constant. The output speed of the data in calibration when the standard gas is made to flow is made slower than the output speed of the data in measurement. Thus, the waveform in calibration becomes wide on the time axis. The record whose calibration waveform is clear to understand remains.

Description

【発明の詳細な説明】 (イ)産業上の利用分野 この発明は、ガス中の成分濃度を測定し、その値をレコ
ーダ等へ、アナログ出力するガス濃度測定装置に関する
DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to a gas concentration measuring device that measures the concentration of components in gas and outputs the value in analog form to a recorder or the like.

(ロ)従来の技術 従来のガス濃度測定は、第4図に示すように、入力され
たガスは検出部41で測定され、測定値はストアされる
ことなくアンプ42で増幅され、リアルタイムでアナロ
グ出力し、レコーダ43に記録している。この種のガス
濃度測定装置では、測定前に標準ガスを導入して校正し
、測定終了後にも分析計ドリフト確認の為、もう−度標
準ガスを分析計に流している。
(B) Conventional technology In conventional gas concentration measurement, as shown in FIG. It is output and recorded on the recorder 43. In this type of gas concentration measuring device, a standard gas is introduced into the analyzer for calibration before measurement, and after the measurement is completed, the standard gas is again passed through the analyzer in order to confirm analyzer drift.

(ハ)発明が解決しようとする課題 一般に、ガス濃度測定は、長時間にわたって行われるの
で、レコーダのチャートは2cm/時ぐらいの非常に遅
いスピードで送られることも多い。
(c) Problems to be Solved by the Invention In general, gas concentration measurements are carried out over a long period of time, so the recorder chart is often sent at a very slow speed of about 2 cm/hour.

また、長時間にわたる測定の間、何度か校正することが
あるが、校正時間は10分程度であり、さらにその間で
も実際校正をしている間は1程度度のため、上記した程
のスピードにレコードでは、第5図に示すように、チャ
ートを見ても標準ガス導入時の指示レベル、特に校正時
の指示レベルが判断し得ないという問題があった。例え
ば、第5図において、レコーダのチャートスピードを2
0mm/時とすると、標準ガスを3分流し、校正を30
秒間で行った場合、校正ガス導入幅が1胴、校正中の幅
は、ペン幅程度となり、ドリフト補正量をチャート上か
ら読み取ることが難しい。
Also, during long-term measurements, calibration may be performed several times, but the calibration time is about 10 minutes, and even during that time, the actual calibration is about 1 degree, so the speed described above is not sufficient. As shown in FIG. 5, the record had a problem in that the indicated level at the time of introducing the standard gas, especially the indicated level at the time of calibration, could not be determined even by looking at the chart. For example, in Figure 5, the chart speed of the recorder is set to 2.
If it is 0 mm/hour, the standard gas will flow for 3 minutes and the calibration will be performed for 30 minutes.
When the calibration is performed in seconds, the width of the calibration gas introduction is one cylinder, and the width during calibration is about the width of a pen, making it difficult to read the drift correction amount from the chart.

この発明は、上記問題点に着目してなされたものであっ
て、測定時は通常と変わらず、それでいて校正時の指示
レベルを明確に読み取り得るガス濃度測定装置を提供す
ることを目的としている。
The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a gas concentration measuring device that does not change from normal measurement and can clearly read the indicated level during calibration.

(ニ)課題を解決するための手段及び作用この出願の請
求項1記載の発明のガス濃度測定装置は、校正用の標準
ガスと被測定ガスを切替えて導入し、それぞれガス成分
濃度を検出する検出部と、標準ガス導入と被測定ガス導
入を判別する手段と、前記検出部で検出される校正時の
標準ガスの検出値と測定時の被測定ガスの検出値を時間
順次に記憶するメモリと、前記メモリに記憶されている
データをアナログ信号で出力するとともに、前記被測定
ガスのデータよりも、前記校正時の標準ガスのデータを
相対的にスピードを遅くして出力する手段とを備えてい
る。
(d) Means and operation for solving the problem The gas concentration measuring device of the invention described in claim 1 of this application switches and introduces a standard gas for calibration and a gas to be measured, and detects the concentration of each gas component. a detection unit, a means for determining whether a standard gas is introduced or a gas to be measured is introduced, and a memory for storing in time order the detected values of the standard gas during calibration and the detected values of the measured gas during measurement detected by the detection unit. and means for outputting the data stored in the memory as an analog signal, and outputting the data of the standard gas at the time of calibration at a relatively slower speed than the data of the gas to be measured. ing.

このガス濃度測定装置では、メモリに記憶されたデータ
を出力する際に、被測定ガスのデータよりも校正時の標
準ガスのデータを相対的にスピードを遅く出力するので
、第2図に示すように校正時のデータが幅広く、ゆっく
りとレコーダに記録される。
When this gas concentration measuring device outputs the data stored in the memory, it outputs the data of the standard gas at the time of calibration at a relatively slower speed than the data of the gas to be measured, as shown in Figure 2. A wide range of calibration data is slowly recorded on the recorder.

この出願の請求項2記載の発明のガス濃度測定装置は、
校正用の標準ガスと被測定ガスを切替えて導入し、それ
ぞれガス成分濃度を検出する検出部と、標準ガス導入と
被測定ガス導入を判別する手段と、前記検出部で検出さ
れる校正時の標準ガスの検出値と測定時の被測定ガスの
検出値を時間順次に記憶するメモリと、前記メモリに記
憶されているデータをアナログ信号で出力するとともに
、前記被測定ガスと前記標準ガスのデータを等速で出力
するのと、被測定ガスのデータより前記標準ガスのデー
タを相対的にスピードを遅くして出力するのを併せて出
力する手段とを備えている。
The gas concentration measuring device of the invention according to claim 2 of this application includes:
A detection unit that switches and introduces a standard gas and a gas to be measured for calibration and detects the respective gas component concentrations; a means for determining whether the standard gas is introduced or the gas to be measured; a memory that stores the detected value of the standard gas and the detected value of the gas to be measured during measurement in time order; and outputs the data stored in the memory as an analog signal, and the data of the gas to be measured and the standard gas. It is provided with a means for outputting at a constant speed and a means for outputting the data of the standard gas at a relatively slower speed than the data of the gas to be measured.

このガス濃度測定装置では、メモリに記録されたデータ
を出力する際に、被測定ガスのデータと標準ガスのデー
タを等速で出力するとともに、被測定ガスのデータより
標準ガスのデータを相対的にスピードを遅くして出力し
、両出力を重畳して出力する。そのため、この出力をレ
コードすると第3図に示すようになり、通常の時間経過
と測定値の関係、校正時のみ幅広くして波形が得られる
When outputting the data recorded in the memory, this gas concentration measuring device outputs the data of the measured gas and the data of the standard gas at the same speed, and also outputs the data of the standard gas relative to the data of the measured gas. output at a slower speed, and then output by superimposing both outputs. Therefore, when this output is recorded, it becomes as shown in FIG. 3, which shows the normal relationship between the passage of time and measured values, and a waveform that is widened only during calibration.

(ホ)実施例 以下、実施例により、この発明をさらに詳細に説明する
(E) Examples The present invention will be explained in more detail with reference to Examples below.

第1図は、この発明の一実施例を示すガス濃度測定装置
のブロック図である。このガス濃度測定装置10は、被
測定ガスと標準ガス(校正用ガス)を切り替えて導入す
るガス切替器11とは、入力されたガスを検出する検出
部12と、測定されたガス濃度を記憶するメモリ13と
、測定値をアナログでレコーダ15に出力するアナログ
出力部14とから構成されている。
FIG. 1 is a block diagram of a gas concentration measuring device showing an embodiment of the present invention. This gas concentration measurement device 10 includes a gas switcher 11 that switches between a gas to be measured and a standard gas (calibration gas), a detection unit 12 that detects the input gas, and a memory that stores the measured gas concentration. and an analog output section 14 that outputs measured values to a recorder 15 in analog form.

この実施例ガス濃度測定装置10において、測定を行う
場合は、測定に入る前に標準ガスを導入して、ゼロ・ス
パン校正を行う。この校正時の検出部12のデータはメ
モリ13に順次記憶する。
When performing measurement in this embodiment gas concentration measuring device 10, a standard gas is introduced and zero/span calibration is performed before starting measurement. The data of the detection unit 12 during this calibration is sequentially stored in the memory 13.

測定前の校正が終了すると、次に導入ガスを被測定ガス
に切り替えて測定動作に入り、測定データは、順次メモ
リ13に記憶する。測定後も、次の測定に移る前に、ゼ
ロ・スパン校正を行う(第3図のC参照)。この校正時
のデータも同様に、メモリ13に記憶する。メモリ13
には測定時と校正時の別がデータに対応して記憶しであ
る。このように、メモリ13に校正時と測定時のデータ
を一旦記憶する。
When the pre-measurement calibration is completed, the introduced gas is then switched to the gas to be measured and measurement operation begins, and the measured data are sequentially stored in the memory 13. After measurement, zero and span calibration is performed before proceeding to the next measurement (see C in Figure 3). The data at the time of this calibration is similarly stored in the memory 13. memory 13
The difference between measurement and calibration is stored in correspondence with the data. In this way, data at the time of calibration and measurement are temporarily stored in the memory 13.

測定後、メモリ13にストアされたデータは、アナログ
出力部14を経て、レコーダ15に出力し、レコーダ1
5のチャートに記録する。このとき、レコーダ15のチ
ャート紙のスピードは一定であるが、標準ガスを流した
校正時のデータの出力速度を、測定時のデータよりも遅
くする。その記録例を第2図に示す。この記録例では測
定時は従来(通常)と同様の記録速度、例えば20薗/
時でリアルタイムで行われるが、校正時は、これよりも
ゆっくりと出力されるため、その波形は時間軸上に幅広
いものとなり、校正波形がわかりやすい記録が残ること
になる。測定時の出力スピードを従来と同程度とすると
、実際には10分程度の校正時の出力を数10分かけて
レコーダ上に記録することになる。
After measurement, the data stored in the memory 13 is outputted to the recorder 15 via the analog output section 14, and
Record it on the chart in step 5. At this time, the speed of the chart paper of the recorder 15 is constant, but the output speed of the data during calibration in which the standard gas was flowed is made slower than the data during measurement. An example of the recording is shown in FIG. In this recording example, when measuring, the recording speed is the same as the conventional (normal), for example, 20
This is done in real time, but during calibration, it is output more slowly than this, so the waveform has a wide range on the time axis, leaving a record of the calibration waveform that is easy to understand. Assuming that the output speed during measurement is the same as in the past, the output during calibration, which takes about 10 minutes, will actually take several tens of minutes to be recorded on the recorder.

しかし、記録の時間短縮を要する場合は、メモリ13の
出力スピードを全体に早めればよい。この場合でも、校
正時の出力データは測定時のデータに比し、相対的に出
力スピードが遅くなっている。
However, if it is necessary to shorten the recording time, the overall output speed of the memory 13 may be increased. Even in this case, the output speed of the output data at the time of calibration is relatively slower than that at the time of measurement.

なお、上記実施例において、測定が全て完了しない状態
で、測定データをアナログ出力して記録してもよいが、
この場合校正のたびに出力が遅れるので、遅れたデータ
のみをメモリにストアしておく。
In addition, in the above embodiment, the measurement data may be output and recorded in analog form before all measurements are completed.
In this case, the output is delayed each time calibration is performed, so only the delayed data is stored in the memory.

次に、この発明の他の実施例について説明する。Next, other embodiments of the invention will be described.

この実施例において、ガス濃度測定装置の基本的な構成
は第1図に示したものと同様である。測定時及び測定前
後の校正時の検出部12よりのデータをメモリ13に記
憶することは、前記の実施例と同様である。この実施例
の特徴は、メモリ13より、アナログ出力部14を介し
てデータを出力する際に、校正時のデータと測定時のデ
ータを等速で出力するものと、校正時のデータと測定時
のデータに比し、出力スピードを相対的に遅くして出力
するものとを重畳して出力するようにした点である。な
お、測定値をメモリ13に記憶してゆく時に校正用標準
ガスを流した校正時刻も同時に記憶しておく。
In this embodiment, the basic configuration of the gas concentration measuring device is the same as that shown in FIG. Storing data from the detection unit 12 during measurement and during calibration before and after measurement in the memory 13 is the same as in the previous embodiment. The features of this embodiment are that when outputting data from the memory 13 through the analog output section 14, the data at the time of calibration and the data at the time of measurement are output at a constant speed, and the data at the time of calibration and the data at the time of measurement are output at a constant speed. The point is that the output speed is relatively slow compared to the data of , and the data is superimposed on the output. Note that when the measured values are stored in the memory 13, the calibration time at which the calibration standard gas was flowed is also stored at the same time.

この実施例ガス濃度測定装置の記録例を第3図に示して
いる。同図において、波形aは校正時のデータと測定時
のデータを通常の速度で出力した場合の波形(第5図と
同じ)であり、波形すは出力速度を遅くした場合の波形
である。
A recording example of this example gas concentration measuring device is shown in FIG. In the figure, waveform a is the waveform when the data at the time of calibration and data at the time of measurement are output at the normal speed (same as in FIG. 5), and waveform s is the waveform when the output speed is slowed down.

メモリ13からデータを出力する時に校正開始のA、(
C)点からB (D)点までのデータを印字する際に、
波形aのものについては、通常のスピード(リアルタイ
ム)で出力するが、波形すのものは、通常のスピードの
ものより時間を遅らして出力する。この場合、波形a用
の時間軸t1、波形す用の時間軸む、を2種卵字してお
くとわかりやすい。
A to start calibration when outputting data from memory 13, (
When printing data from point C) to point B (D),
Waveform a is output at normal speed (real time), but waveform A is output at a slower time than normal speed. In this case, it is easier to understand if the time axis t1 for waveform a and the time axis t1 for waveform a are drawn in two oval shapes.

この実施例において、リアルタイムで波形を見たい場合
は、プロッタのように一度印字して送られた記録紙を戻
すことが可能な出力装置で先の波形すをリアルタイムで
出力し、記録紙を戻し、ストアデータより波形aを印字
するようにしてもよい。
In this embodiment, if you want to view the waveform in real time, use an output device such as a plotter that can print once and return the chart paper that has been sent, output the previous waveform in real time, and then return the chart paper. , the waveform a may be printed from the stored data.

また、上記各実施例において、レコーダとして使用する
プリンタはハード的に別構成としているが、ガス濃度測
定装置本体内に設けてもよい。
Furthermore, in each of the above embodiments, the printer used as the recorder has a separate hardware configuration, but it may be provided within the main body of the gas concentration measuring device.

(へ)発明の効果 請求項1の発明によれば、校正時の標準ガスの検出値と
測定時の被測定ガスの検出値を時間順次に記憶するメモ
リと、このメモリに記憶されているデータをアナログ信
号で出力するとともに、被測定ガスのデータよりも校正
時の標準ガスのデータを相対的にスピードを遅くして出
力する手段を備えているので、遅いチャートスピードで
記録していても、校正時の補正がチャート上から正しく
読み取れるので、校正までのドリフトを正しく補正する
ことができる。ガス濃度測定装置のアナログ出力に接続
されるレコーダは外部コントロール不可のものでもよく
、手持ちのレコーダを用いて簡単に記録を得ることがで
きる。また、メモリに記録データを出力する際に、全体
的に印字速度を上げることにより、トータルの出力時間
も非常に短縮できる。
(F) Effect of the Invention According to the invention of claim 1, there is provided a memory that stores the detected value of the standard gas at the time of calibration and the detected value of the gas to be measured at the time of measurement in time order, and the data stored in this memory. In addition to outputting the data as an analog signal, it is also equipped with a means to output the data of the standard gas during calibration at a relatively slower speed than the data of the gas to be measured, so even when recording at a slow chart speed, Since the correction at the time of calibration can be read correctly from the chart, the drift up to the calibration can be corrected correctly. The recorder connected to the analog output of the gas concentration measuring device may be one that cannot be controlled externally, and records can be easily obtained using a handheld recorder. Furthermore, by increasing the overall printing speed when outputting recorded data to the memory, the total output time can be significantly shortened.

請求項2の発明によれば、校正時の標準ガスの検出値と
測定時の被測定ガスの検出値を時間順次に記憶するメモ
リと、このメモリに記憶されているデータをアナログ信
号で出力するとともに、前記被測定ガスと前記標準ガス
のデータを等速で出力するのと、被測定ガスのデータよ
り前記標準ガスのデータを相対的にスピードを遅くして
出力するのを併せて出力する手段を備えているので、校
正時の波形が幅広く記録され、ドリフト補正がチャート
上で明確にわかる上、通常の波形も重ねて記録されるの
で、双方の波形をチャート上で確認でき、便利である。
According to the invention of claim 2, there is provided a memory for storing the detected value of the standard gas at the time of calibration and the detected value of the gas to be measured at the time of measurement in time sequence, and the data stored in this memory is outputted as an analog signal. and a means for outputting the data of the gas to be measured and the standard gas at a constant speed, and outputting the data of the standard gas at a relatively slower speed than the data of the gas to be measured. Because it is equipped with a wide range of waveforms during calibration, the drift correction can be clearly seen on the chart, and the normal waveform is also recorded overlapping, so both waveforms can be checked on the chart, which is convenient. .

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

第1図は、この発明の一実施例を示すガスの濃度測定装
置のブロック図、第2図は、同実施例ガス濃度測定装置
の出力波形例を示す図、第3図は、他の実施例ガス濃度
測定装置の出力波形例を示す図、第4図は、従来のガス
濃度測定装置のブロック図、第5図は、同ガス濃度測定
装置の出力波形例を示す図である。 lO:ガス濃度測定装置、11:ガス切替器、12:検
出部、     13:メモリ、14:アナログ出力部
、15:レコーダ。 特許出願人      株式会社島津製作所代理人  
弁理士   中 村 茂 信第 図 第 図 第 図
FIG. 1 is a block diagram of a gas concentration measuring device showing one embodiment of the present invention, FIG. 2 is a diagram showing an example of the output waveform of the gas concentration measuring device of the same embodiment, and FIG. 3 is a diagram showing another embodiment of the gas concentration measuring device. FIG. 4 is a block diagram of a conventional gas concentration measuring device, and FIG. 5 is a diagram showing an example of an output waveform of the gas concentration measuring device. lO: gas concentration measuring device, 11: gas switching device, 12: detection section, 13: memory, 14: analog output section, 15: recorder. Patent applicant: Shimadzu Corporation Agent
Patent Attorney Shigeru Nakamura

Claims (2)

【特許請求の範囲】[Claims] (1)校正用の標準ガスと被測定ガスを切替えて導入し
、それぞれガス成分濃度を検出する検出部と、 標準ガス導入と被測定ガス導入を判別する手段と、 前記検出部で検出される校正時の標準ガスの検出値と測
定時の被測定ガスの検出値を時間順次に記憶するメモリ
と、 前記メモリに記憶されているデータをアナログ信号で出
力するとともに、前記被測定ガスのデータよりも、前記
校正時の標準ガスのデータを相対的にスピードを遅くし
て出力する手段と、 を備えたことを特徴とするガス濃度測定装置。
(1) A detection unit that switches and introduces a standard gas for calibration and a gas to be measured and detects the concentration of each gas component; a means for determining whether the standard gas is introduced or the gas to be measured; A memory that stores the detected value of the standard gas during calibration and the detected value of the measured gas during measurement in time order, and outputs the data stored in the memory as an analog signal, and also outputs the data stored in the memory as an analog signal. A gas concentration measuring device comprising: means for outputting data of the standard gas during calibration at a relatively slow speed.
(2)校正用の標準ガスと被測定ガスを切替えて導入し
、それぞれガス成分濃度を検出する検出部標準ガス導入
と被測定ガス導入を判別する手段と、 前記検出部で検出される校正時の標準ガスの検出値と測
定時の被測定ガスの検出値を時間順次に記憶するメモリ
と、 前記メモリに記憶されているデータをアナログ信号で出
力するとともに、前記被測定ガスと前記標準ガスのデー
タを等速で出力するのと、被測定ガスのデータより前記
標準ガスのデータを相対的にスピードを遅くして出力す
るのを併せて出力する手段と、 を備えたことを特徴とするガス濃度測定装置。
(2) A detection unit that switches and introduces a standard gas for calibration and a gas to be measured and detects the concentration of each gas component; and means for determining whether the standard gas is introduced or the gas to be measured is introduced; and the detection unit detects the calibration time. a memory that stores the detected value of the standard gas and the detected value of the gas to be measured during measurement in time order, and outputs the data stored in the memory as an analog signal, and A gas characterized by comprising: means for outputting data at a constant speed and means for outputting data on the standard gas at a relatively slower speed than data on the gas to be measured. Concentration measuring device.
JP25211090A 1990-09-20 1990-09-20 Gas-concentration measuring apparatus Pending JPH04130259A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25211090A JPH04130259A (en) 1990-09-20 1990-09-20 Gas-concentration measuring apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25211090A JPH04130259A (en) 1990-09-20 1990-09-20 Gas-concentration measuring apparatus

Publications (1)

Publication Number Publication Date
JPH04130259A true JPH04130259A (en) 1992-05-01

Family

ID=17232629

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25211090A Pending JPH04130259A (en) 1990-09-20 1990-09-20 Gas-concentration measuring apparatus

Country Status (1)

Country Link
JP (1) JPH04130259A (en)

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