JPS6013423U - Liningless electromagnetic flowmeter - Google Patents
Liningless electromagnetic flowmeterInfo
- Publication number
- JPS6013423U JPS6013423U JP10572783U JP10572783U JPS6013423U JP S6013423 U JPS6013423 U JP S6013423U JP 10572783 U JP10572783 U JP 10572783U JP 10572783 U JP10572783 U JP 10572783U JP S6013423 U JPS6013423 U JP S6013423U
- Authority
- JP
- Japan
- Prior art keywords
- excitation
- liningless
- electromagnetic flowmeter
- comparison means
- fluid
- 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.)
- Granted
Links
Landscapes
- Measuring Volume Flow (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第1図は従来の電磁流量計の実施例を示す図、第2図は
本考案の第1の実施例を示す図、第3図は本考案の第2
の実施例の要部を示すブロック図、第4図は本考案の第
3の実施例の要部を示すブロック図である。
1・・・・・・導電性管路、3a、 3b・・・・・
・測定電極、4a、 4b・・・・・・増幅器、5a
、 5b・・・・・・給電電極、9・・・・・・増幅
器、10・・・・・・サンプルホールド回路、13・・
・・・・定電流源、15・・・・・・タイミング信号発
生回路、17.18・・・・・・比較器、1.、1.・
・・・・・タイミング信号、S、・・・・・・出力信号
。
・ヱ 5
X←←幣丈。
II X 、/。
六大
・工
\
′” X大
1
1 :!
士−JI V)’−)
状
O
ぺFig. 1 is a diagram showing an embodiment of a conventional electromagnetic flowmeter, Fig. 2 is a diagram showing a first embodiment of the present invention, and Fig. 3 is a diagram showing a second embodiment of the present invention.
FIG. 4 is a block diagram showing the main parts of the third embodiment of the present invention. 1... Conductive conduit, 3a, 3b...
・Measurement electrodes, 4a, 4b...Amplifier, 5a
, 5b... feeding electrode, 9... amplifier, 10... sample hold circuit, 13...
... Constant current source, 15 ... Timing signal generation circuit, 17.18 ... Comparator, 1. , 1.・
...timing signal, S, ...output signal.・ヱ 5 X ← ← length. II X, /. Six majors/Engineering\ ′”
Claims (1)
と同じ電位分布を前記導電性管路に形成してライニング
を不要としたライニングレス電磁流量計において、前記
被測定流体の流速に対応した信号電圧を増幅する増幅手
段と、前記信号電圧が所定の値を越えたことを検出する
比較手段と、前記比較手段の出力により前記増幅器の利
得を変更する切換手段と、前記比較手段の出力により前
記利得変更に逆比例するように励磁コイルへ供給する励
磁電流または励磁電圧を制御する励磁制御手段とを具備
するライニングレス電磁流量計。A liningless electromagnetic flowmeter that eliminates the need for lining by forming the same potential distribution in the conductive conduit as that generated inside the conductive conduit through which the fluid to be measured flows, and corresponds to the flow velocity of the fluid to be measured. an amplification means for amplifying the signal voltage, a comparison means for detecting that the signal voltage exceeds a predetermined value, a switching means for changing the gain of the amplifier according to the output of the comparison means, and an output of the comparison means. and excitation control means for controlling the excitation current or excitation voltage supplied to the excitation coil so as to be inversely proportional to the gain change.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10572783U JPS6013423U (en) | 1983-07-07 | 1983-07-07 | Liningless electromagnetic flowmeter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10572783U JPS6013423U (en) | 1983-07-07 | 1983-07-07 | Liningless electromagnetic flowmeter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6013423U true JPS6013423U (en) | 1985-01-29 |
JPH0450503Y2 JPH0450503Y2 (en) | 1992-11-27 |
Family
ID=30247699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10572783U Granted JPS6013423U (en) | 1983-07-07 | 1983-07-07 | Liningless electromagnetic flowmeter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6013423U (en) |
-
1983
- 1983-07-07 JP JP10572783U patent/JPS6013423U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPH0450503Y2 (en) | 1992-11-27 |
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