JPH029828U - - Google Patents
Info
- Publication number
- JPH029828U JPH029828U JP8798188U JP8798188U JPH029828U JP H029828 U JPH029828 U JP H029828U JP 8798188 U JP8798188 U JP 8798188U JP 8798188 U JP8798188 U JP 8798188U JP H029828 U JPH029828 U JP H029828U
- Authority
- JP
- Japan
- Prior art keywords
- flow
- coil
- electromagnetic flowmeter
- magnetic field
- generate
- 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
- 230000005284 excitation Effects 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Measuring Volume Flow (AREA)
Description
第１図は本考案による電磁流量計を構成する励
磁回路の一実施例を示す回路図、第２図は本考案
による電磁流量計および従来の電磁流量計の動作
を説明するためのタイムチヤート、第３図は一般
的な電磁流量計を示す回路図、第４図は従来の電
磁流量計を構成する励磁回路を示す回路図である
。
Ｓ１〜Ｓ６…スイツチ、Ａ４，Ａ５，Ａ６…演
算増幅器、Ｑ１，Ｑ２…トランジスタ、Ｒ１，Ｒ
２〜Ｒ６…抵抗、Ｅ…励磁電源、Ｅｓ…第１の基
準電源、２…励磁コイル、ＴＸ，ＴＹ…出力端子
、１０…温度検出回路、Ｃ１，Ｃ２…コンデンサ
、Ｅｓ１…第２の基準電源。
FIG. 1 is a circuit diagram showing one embodiment of the excitation circuit constituting the electromagnetic flowmeter according to the present invention, and FIG. 2 is a time chart for explaining the operation of the electromagnetic flowmeter according to the present invention and the conventional electromagnetic flowmeter. FIG. 3 is a circuit diagram showing a general electromagnetic flowmeter, and FIG. 4 is a circuit diagram showing an excitation circuit constituting a conventional electromagnetic flowmeter. S1 to S6...Switch, A4, A5, A6...Operation amplifier, Q1, Q2...Transistor, R1, R
2 to R6...Resistor, E...Excitation power supply, E s ...First reference power supply, 2...Excitation coil, TX, TY...Output terminal, 10...Temperature detection circuit, C1, C2...Capacitor, E s1 ...Second Reference power supply.
Claims (1)
て磁界を発生させ、フアラデイの法則に従つて発
生する信号起電力を増幅して流量信号とする電磁
流量計において、前記励磁回路は、一定の励磁電
流を流すために必要な前記コイルの印加電圧を測
定し、前記印加電圧が所定電圧を越えたときにア
ラーム信号を出力する温度検出回路を有する電磁
流量計。 In an electromagnetic flowmeter in which a constant excitation current is passed through a coil by an excitation circuit to generate a magnetic field, and a signal electromotive force generated according to Faraday's law is amplified to produce a flow rate signal, the excitation circuit is configured to flow a constant excitation current through a coil to generate a magnetic field. An electromagnetic flowmeter having a temperature detection circuit that measures the voltage applied to the coil necessary to cause the flow to flow, and outputs an alarm signal when the applied voltage exceeds a predetermined voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8798188U JPH029828U (en) | 1988-07-04 | 1988-07-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8798188U JPH029828U (en) | 1988-07-04 | 1988-07-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH029828U true JPH029828U (en) | 1990-01-22 |
Family
ID=31312566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8798188U Pending JPH029828U (en) | 1988-07-04 | 1988-07-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH029828U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012526279A (en) * | 2009-05-04 | 2012-10-25 | ローズマウント インコーポレイテッド | Electromagnetic flow meter for flow velocity measurement |
-
1988
- 1988-07-04 JP JP8798188U patent/JPH029828U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012526279A (en) * | 2009-05-04 | 2012-10-25 | ローズマウント インコーポレイテッド | Electromagnetic flow meter for flow velocity measurement |
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