JPH03123219U - - Google Patents

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Publication number
JPH03123219U
JPH03123219U JP3337590U JP3337590U JPH03123219U JP H03123219 U JPH03123219 U JP H03123219U JP 3337590 U JP3337590 U JP 3337590U JP 3337590 U JP3337590 U JP 3337590U JP H03123219 U JPH03123219 U JP H03123219U
Authority
JP
Japan
Prior art keywords
temperature
heat
fluid
detection unit
sensitive resistor
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
JP3337590U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP3337590U priority Critical patent/JPH03123219U/ja
Publication of JPH03123219U publication Critical patent/JPH03123219U/ja
Pending legal-status Critical Current

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Description

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

第1図は本考案の一実施例における検出部の正
面図、第2図は第1図の検出部を吸気管に取付け
た状態を示す図、第3図のa,b,c及びdは本
考案の一実施例における検出部の抵抗値調整用ト
リミングパターンの実施例の一部を示す正面図、
第4図は本考案の一実施例における検出回路の回
路図、第5図は本考案の他の実施例における検出
部の平面図である。 1……検出部、2……ホルダ、3……吸気管、
5……ケース、10……ブリツジ回路、11……
絶縁基板、RT……第1感熱抵抗体、RS……第
2感熱抵抗体、RT……第1接続体、RS
…第2接続体、RTA,RTB,RTC…
…抵抗値調整用トリミングパターン。
Fig. 1 is a front view of the detection unit in an embodiment of the present invention, Fig. 2 is a view showing the detection unit of Fig. 1 attached to the intake pipe, and a, b, c, and d of Fig. 3 are A front view showing a part of an example of a trimming pattern for adjusting the resistance value of the detection unit in an example of the present invention,
FIG. 4 is a circuit diagram of a detection circuit in one embodiment of the present invention, and FIG. 5 is a plan view of a detection section in another embodiment of the present invention. 1...Detection part, 2...Holder, 3...Intake pipe,
5...Case, 10...Bridge circuit, 11...
Insulating substrate, RT...first heat-sensitive resistor, RS...second heat-sensitive resistor, RTl ...first connection body, RSl ...
...Second connection body, RT l A, RT l B, RT l C...
...Trimming pattern for adjusting resistance value.

Claims (1)

【実用新案登録請求の範囲】 (1) 流体の温度によつて抵抗値が変化する第1
感熱抵抗体と該流体の温度と流速によつて放熱量
が変化する第2感熱抵抗体とを含んでブリツジ回
路が構成され、前記第2感熱抵抗体の通電電流が
前記ブリツジ回路の平衡を維持するように調整さ
れて当該通電電流値から前記流体の流速に関する
信号を出力する感熱式流量計のための検出部であ
つて、 前記検出部は 前記第1感熱抵抗体と、該第1感熱抵抗体を前
記ブリツジ回路を構成するように接続する第1接
続体と、前記第2感熱抵抗体と、該第2感熱抵抗
体を前記ブリツジ回路を構成するように接続する
第2接続体とを有し、 前記第1接続体と第2接続体の少なくとも一方
は基板上に形成された膜パターンからなり、かつ
当該膜パターンが抵抗値調整用のトリミングパタ
ーンを含んで形成されていることを特徴とする感
熱式流量計のトリミング可能な検出部。 (2) 実用新案登録請求の範囲第1項に記載の検
出部であつて、当該トリミングパターンが流体の
温度による影響を受け易い部位と、当該検出部の
取付部の温度による影響を受け易い部位の双方ま
たは一方に形成されていることを特徴とする感熱
式流量計のトリミング可能な検出部。 (3) 実用新案登録請求の範囲第1項に記載の検
出部であつて、当該トリミングパターンが流体の
温度と当該検出部の取付部の温度による影響がほ
ぼ等しい部位に形成されていることを特徴とする
感熱式流量計のトリミング可能な検出部。
[Claims for Utility Model Registration] (1) A first device whose resistance value changes depending on the temperature of the fluid.
A bridge circuit is configured including a heat-sensitive resistor and a second heat-sensitive resistor whose heat radiation amount changes depending on the temperature and flow rate of the fluid, and the current flowing through the second heat-sensitive resistor maintains the balance of the bridge circuit. A detection unit for a thermal flowmeter that is adjusted to output a signal related to the flow velocity of the fluid from the current value, the detection unit including the first thermal resistor and the first thermal resistor. the second heat-sensitive resistor; and a second connection body that connects the second heat-sensitive resistor to form the bridge circuit. At least one of the first connecting body and the second connecting body is formed of a film pattern formed on a substrate, and the film pattern is formed to include a trimming pattern for adjusting a resistance value. A trimmable detection part of a thermal flowmeter. (2) In the detection unit described in Claim 1 of the Utility Model Registration Claim, a part where the trimming pattern is easily affected by the temperature of the fluid and a part where the mounting part of the detection part is easily affected by the temperature. A trimmable detection section of a thermal flowmeter, characterized in that the detection section is formed on either or both of the above. (3) In the detection unit as set forth in claim 1 of the utility model registration claim, the trimming pattern is formed in a portion where the influence of the temperature of the fluid and the temperature of the mounting part of the detection unit are approximately equal. Features a trimmable detection section of a thermal flowmeter.
JP3337590U 1990-03-29 1990-03-29 Pending JPH03123219U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3337590U JPH03123219U (en) 1990-03-29 1990-03-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3337590U JPH03123219U (en) 1990-03-29 1990-03-29

Publications (1)

Publication Number Publication Date
JPH03123219U true JPH03123219U (en) 1991-12-16

Family

ID=31536981

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3337590U Pending JPH03123219U (en) 1990-03-29 1990-03-29

Country Status (1)

Country Link
JP (1) JPH03123219U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011220696A (en) * 2010-04-05 2011-11-04 Mitsubishi Electric Corp Thermal sensor element

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011220696A (en) * 2010-04-05 2011-11-04 Mitsubishi Electric Corp Thermal sensor element

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