JPH0429829U - - Google Patents
Info
- Publication number
- JPH0429829U JPH0429829U JP6949090U JP6949090U JPH0429829U JP H0429829 U JPH0429829 U JP H0429829U JP 6949090 U JP6949090 U JP 6949090U JP 6949090 U JP6949090 U JP 6949090U JP H0429829 U JPH0429829 U JP H0429829U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- sampling
- excitation
- excitation coil
- excitation current
- 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 3
- 238000005070 sampling Methods 0.000 claims 4
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Measuring Volume Flow (AREA)
Description
第１図は本考案の１実施例の構成を示す構成図
、第２図は第１図に示す実施例の動作を説明する
波形図、第３図は従来の電磁流量計の構成を示す
構成図である。
１０……検出部、１１……信号処理部、１２…
…出力部、１４……電源回路、１７……定電流回
路、１８……制御回路、２０……励磁コイル、２
１……マイクロプロセツサ、２２……バツフアア
ンプ、２３……積分回路、２４……比較器。
Figure 1 is a configuration diagram showing the configuration of one embodiment of the present invention, Figure 2 is a waveform diagram explaining the operation of the embodiment shown in Figure 1, and Figure 3 is a configuration diagram showing the configuration of a conventional electromagnetic flowmeter. It is a diagram. 10...Detection section, 11...Signal processing section, 12...
... Output section, 14 ... Power supply circuit, 17 ... Constant current circuit, 18 ... Control circuit, 20 ... Excitation coil, 2
1...Microprocessor, 22...Buffer amplifier, 23...Integrator circuit, 24...Comparator.
Claims (1)
圧検出手段と、この電圧検出手段で検出した検出
電圧を前記励磁コイルに流れる励磁電流が定常値
に達した後一定期間サンプリングしてサンプリン
グ電圧として出力するサンプリング手段と、前記
励磁コイルの抵抗分の定格値に対応する基準電圧
と前記サンプリング電圧とを比較して比較信号を
出力する比較手段と、この比較電圧が前記基準電
圧を越えていると判断されたときには前記励磁電
流をオフとする制御手段とを具備することを特徴
とする電磁流量計。 Voltage detection means for detecting the excitation voltage applied to the excitation coil; and sampling the detected voltage detected by the voltage detection means for a certain period of time after the excitation current flowing through the excitation coil reaches a steady value and outputs it as a sampling voltage. a sampling means; a comparison means for comparing the sampling voltage with a reference voltage corresponding to a rated value of the resistance of the excitation coil and outputting a comparison signal; An electromagnetic flowmeter characterized by comprising: control means for turning off the excitation current when the excitation current is off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6949090U JPH0429829U (en) | 1990-06-29 | 1990-06-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6949090U JPH0429829U (en) | 1990-06-29 | 1990-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0429829U true JPH0429829U (en) | 1992-03-10 |
Family
ID=31604839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6949090U Pending JPH0429829U (en) | 1990-06-29 | 1990-06-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0429829U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016532087A (en) * | 2013-09-26 | 2016-10-13 | マイクロ モーション インコーポレイテッド | Electromagnetic flow meter with power limiting function and overcurrent detection function |
-
1990
- 1990-06-29 JP JP6949090U patent/JPH0429829U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016532087A (en) * | 2013-09-26 | 2016-10-13 | マイクロ モーション インコーポレイテッド | Electromagnetic flow meter with power limiting function and overcurrent detection function |
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