JPH03127225U - - Google Patents
Info
- Publication number
- JPH03127225U JPH03127225U JP3591990U JP3591990U JPH03127225U JP H03127225 U JPH03127225 U JP H03127225U JP 3591990 U JP3591990 U JP 3591990U JP 3591990 U JP3591990 U JP 3591990U JP H03127225 U JPH03127225 U JP H03127225U
- Authority
- JP
- Japan
- Prior art keywords
- heat
- sensitive resistor
- temperature
- fluid
- bridge circuit
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims 4
- 238000013459 approach Methods 0.000 claims 1
- 230000005855 radiation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 1
Description
第１図は本考案の一実施例に係わる検出部３を
流路１に取付けた図、第２図は第２実施例の検出
部の斜視図、第３図は感熱式流量計の基本回路図
である。
Ｒｓｐ……第２感熱抵抗体、Ｒｓｌ，Ｒｓｌ１
，Ｒｓｌ２……第２接続体、４，１２Ａ，１２Ｂ
……放熱手段。
Fig. 1 is a diagram of a detection unit 3 according to an embodiment of the present invention attached to a flow path 1, Fig. 2 is a perspective view of the detection unit of the second embodiment, and Fig. 3 is a basic circuit of a thermal flowmeter. It is a diagram. R sp ... second heat-sensitive resistor, R sl , R sl1
, R sl2 ... second connection body, 4, 12A, 12B
...heat dissipation means.
Claims (1)
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
、 前記検出部は少なくとも前記第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、前記第２接続体
の温度を該流体の温度に近づける放熱手段とを有
することを特徴とする感熱式流量計の検出部。[Claims for Utility Model Registration] A bridge circuit comprising a first heat-sensitive resistor whose resistance value changes depending on the temperature of a fluid and a second heat-sensitive resistor whose heat radiation amount changes depending on the temperature and flow velocity of the fluid. A detecting unit for a thermal flowmeter configured such that the current flowing through the second heat sensitive resistor is adjusted so as to maintain the balance of the bridge circuit, and outputs a signal regarding the flow rate of the fluid from the current flowing current value. The detection unit includes at least the second heat-sensitive resistor, a second connection body that connects the second heat-sensitive resistor to form the bridge circuit, and a temperature control unit that detects the temperature of the second connection body based on the fluid. A detecting section of a thermal flowmeter, characterized in that it has a heat dissipating means that approaches a temperature of
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3591990U JPH03127225U (en) | 1990-04-03 | 1990-04-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3591990U JPH03127225U (en) | 1990-04-03 | 1990-04-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03127225U true JPH03127225U (en) | 1991-12-20 |
Family
ID=31541691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3591990U Pending JPH03127225U (en) | 1990-04-03 | 1990-04-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03127225U (en) |
-
1990
- 1990-04-03 JP JP3591990U patent/JPH03127225U/ja active Pending
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