JPH0158151U - - Google Patents
Info
- Publication number
- JPH0158151U JPH0158151U JP15163287U JP15163287U JPH0158151U JP H0158151 U JPH0158151 U JP H0158151U JP 15163287 U JP15163287 U JP 15163287U JP 15163287 U JP15163287 U JP 15163287U JP H0158151 U JPH0158151 U JP H0158151U
- Authority
- JP
- Japan
- Prior art keywords
- infrared rays
- nitrogen oxide
- flow cell
- specific wavelength
- half mirror
- 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
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 15
- 239000007789 gas Substances 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 239000013307 optical fiber Substances 0.000 claims description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 claims 2
- 230000002238 attenuated effect Effects 0.000 claims 2
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 claims 2
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Description
第１図は本考案に係わる窒素酸化物計測装置の
一実施例を示す縦断側面図、第２図はフイルター
ユニツトの正面図である。
１……光源体、３……光フアイバー、４……濃
度測定用フローセル、４ａ……被測定ガスＡの入
口、４ｂ……被測定ガスＡの出口、５ａ，５ｂ…
…ハーフミラー、５ｃ……ガラス面、６……反射
ミラー、１０ａ……第１のバンドパスフイルター
、１０ｂ……第２のバンドパスフイルター、１０
ｃ……第３のバンドパスフイルター、１１……フ
イルターユニツトのフイルター支持板、１３ａ，
１３ｂ，１３ｃ……赤外線検出手段。
FIG. 1 is a longitudinal sectional side view showing an embodiment of the nitrogen oxide measuring device according to the present invention, and FIG. 2 is a front view of a filter unit. DESCRIPTION OF SYMBOLS 1... Light source body, 3... Optical fiber, 4... Flow cell for concentration measurement, 4a... Inlet of gas to be measured A, 4b... Outlet of gas to be measured A, 5a, 5b...
...half mirror, 5c...glass surface, 6...reflection mirror, 10a...first bandpass filter, 10b...second bandpass filter, 10
c...Third band pass filter, 11...Filter support plate of filter unit, 13a,
13b, 13c... Infrared detection means.
Claims (1)
との濃度を計測する窒素酸化物計測装置において
、被測定ガスの出入口と前壁部に設けた反射ミラ
ーと後部壁に設けたハーフミラー及びガラス面と
を有する濃度測定用フローセル、光源体からの赤
外線を同濃度測定用フローセル内へ導く光フアイ
バー、上記濃度測定用フローセル内の酸化窒素に
より吸収減衰されて上記ハーフミラーから出た特
定波長の赤外線のみを透過する第１のバンドパス
フイルターと上記濃度測定用フローセル内の二酸
化窒素により吸収減衰されて上記ハーフミラーか
ら出た特定波長の赤外線のみを透過する第２のバ
ンドパスフイルターと上記ガラス面から出た上記
各特定波長の赤外線以外の赤外線を透過する第３
のバンドパスフイルターとよりなるフイルターユ
ニツト、及び上記各バンドパスフイルター透過後
の赤外線を検出する赤外線検出手段を具えている
ことを特徴とした窒素酸化物計測装置。 In a nitrogen oxide measuring device that measures the concentration of nitrogen oxide and nitrogen dioxide contained in a gas to be measured, a reflective mirror installed at the entrance and exit of the gas to be measured and the front wall, a half mirror and a glass surface installed on the rear wall. an optical fiber that guides infrared rays from a light source into the concentration measurement flow cell, and only infrared rays of a specific wavelength emitted from the half mirror after being absorbed and attenuated by nitrogen oxide in the concentration measurement flow cell; a first bandpass filter that transmits infrared rays, a second bandpass filter that transmits only infrared rays of a specific wavelength that are absorbed and attenuated by nitrogen dioxide in the concentration measurement flow cell and that are emitted from the half mirror; A third filter that transmits infrared rays other than the infrared rays of each specific wavelength mentioned above.
What is claimed is: 1. A nitrogen oxide measuring device comprising: a filter unit comprising a bandpass filter; and an infrared detection means for detecting infrared rays after passing through each of the bandpass filters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15163287U JPH0158151U (en) | 1987-10-05 | 1987-10-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15163287U JPH0158151U (en) | 1987-10-05 | 1987-10-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0158151U true JPH0158151U (en) | 1989-04-11 |
Family
ID=31425843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15163287U Pending JPH0158151U (en) | 1987-10-05 | 1987-10-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0158151U (en) |
-
1987
- 1987-10-05 JP JP15163287U patent/JPH0158151U/ja active Pending
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