JP2006030105A - 熱式質量流量計 - Google Patents
熱式質量流量計 Download PDFInfo
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- JP2006030105A JP2006030105A JP2004212525A JP2004212525A JP2006030105A JP 2006030105 A JP2006030105 A JP 2006030105A JP 2004212525 A JP2004212525 A JP 2004212525A JP 2004212525 A JP2004212525 A JP 2004212525A JP 2006030105 A JP2006030105 A JP 2006030105A
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- Prior art keywords
- temperature sensor
- sensor
- heating temperature
- platinum wire
- thermal mass
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Abstract
【解決手段】 加熱感温センサ5は、センサリード線5aに接続される白金線5bを芯材5cに巻回固定して素子本体5dを形成し、その素子本体5dをセンサケース5e内に挿入して白金線5bをセンサケース5eの内面5f近傍に配置するとともに、白金線5bと内面5fとの間隙にモールド剤5gを介在させて素子本体5dをセンサケース5e内に固定してなる構造になっている。加熱感温センサ5は、白金線5bが被測定流体に対して近づく構造になっている。また、加熱感温センサ5は、白金線5bの周りに空気層が存在しない構造になっている。さらに、加熱感温センサ5は、白金線5bが固定される構造になっている。
【選択図】 図1
Description
図1は本発明の熱式質量流量計の一実施の形態を示す図であり、(a)は流管が鉛直方向に伸びる場合においての上流側から見た概略図、(b)は(a)のA−A線断面図、(c)は(b)のB−B線断面図、(d)は加熱感温センサの要部断面図である。また、図2は流量による出力の変化を示すグラフである。
2 流管
3 流路
4 感温センサ
5 加熱感温センサ
5a センサリード線
5b 白金線
5c 芯材
5d 素子本体
5e センサケース
5f 内面
5g モールド剤
5h 保護部
6 流管軸
7 流体方向
8 感温部分
9 固定部分
10 センサホルダ
11 仮想線(感温センサ及び加熱感温センサを結ぶ直線)
12 自然対流の方向
Claims (1)
- 感温センサと加熱感温センサを流管の流路に突出させ、前記感温センサと前記加熱感温センサの温度差を一定とするために前記加熱感温センサを加熱し、該加熱に係る電力供給量制御を行いその電力量から質量流量を算出する熱式質量流量計において、
前記加熱感温センサは、センサリード線に接続される白金線を芯材に巻回固定して素子本体を形成し、該素子本体をセンサケース内に挿入して前記白金線を前記センサケースの内面近傍に配置するとともに、前記白金線と前記内面との間隙にモールド剤を介在させて前記素子本体を前記センサケース内に固定してなる
ことを特徴とする熱式質量流量計。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2004212525A JP3907645B2 (ja) | 2004-07-21 | 2004-07-21 | 熱式質量流量計 |
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JP2004212525A JP3907645B2 (ja) | 2004-07-21 | 2004-07-21 | 熱式質量流量計 |
Publications (2)
Publication Number | Publication Date |
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JP2006030105A true JP2006030105A (ja) | 2006-02-02 |
JP3907645B2 JP3907645B2 (ja) | 2007-04-18 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2004212525A Expired - Lifetime JP3907645B2 (ja) | 2004-07-21 | 2004-07-21 | 熱式質量流量計 |
Country Status (1)
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JP (1) | JP3907645B2 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20160053131A (ko) * | 2014-10-31 | 2016-05-13 | 주식회사 골든룰 | 열식 질량 유량계 |
KR20200106444A (ko) * | 2019-03-04 | 2020-09-14 | 아즈빌주식회사 | 열식 유량계 및 유량 보정 방법 |
-
2004
- 2004-07-21 JP JP2004212525A patent/JP3907645B2/ja not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20160053131A (ko) * | 2014-10-31 | 2016-05-13 | 주식회사 골든룰 | 열식 질량 유량계 |
KR101660226B1 (ko) * | 2014-10-31 | 2016-09-28 | 주식회사 골든룰 | 열식 질량 유량계 |
KR20200106444A (ko) * | 2019-03-04 | 2020-09-14 | 아즈빌주식회사 | 열식 유량계 및 유량 보정 방법 |
KR102256904B1 (ko) | 2019-03-04 | 2021-05-28 | 아즈빌주식회사 | 열식 유량계 및 유량 보정 방법 |
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JP3907645B2 (ja) | 2007-04-18 |
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