JPS5932926U - vortex flow meter - Google Patents
vortex flow meterInfo
- Publication number
- JPS5932926U JPS5932926U JP12828482U JP12828482U JPS5932926U JP S5932926 U JPS5932926 U JP S5932926U JP 12828482 U JP12828482 U JP 12828482U JP 12828482 U JP12828482 U JP 12828482U JP S5932926 U JPS5932926 U JP S5932926U
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric sensor
- ratio
- electrode
- vortex
- noise component
- 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
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図は従来より一般に使用されている渦流針の従来例
、第２図は第１図の圧電センサの構成説明図、第３図は
第１図の動作説明図、第４図は第１図の電気接続図、第
５図は第１図の動作説明図、第６図は本考案の一実施例
の要部構成説明図である。
１・・・管路、１１・・・ノズル、２・・・受力体、２
１・・・フランジ部、２２・・・凹部、３・・・ねじ、
４ａ’ 。
４ｂ’・・・圧電センサ、４１ａ’ 、 ４ ｌｂ’
・・・素子本体、４２ａ’ 〜４５ａ’ 、 ４２ｂ’
〜４５ｂ’ −・・厚膜電極、４６ｂ’ 、 ４７
ｂ’−・・ダミー電極、５ａ。
５ｂ、・５Ｃ・・・絶縁体、６・・・固定体、７・・・
電気回路、７１・・・第１人力処理回路、７２・・・第
２人力処理回路、７３・・・加算器。Fig. 1 is a conventional example of a vortex needle that has been commonly used in the past, Fig. 2 is an explanatory diagram of the configuration of the piezoelectric sensor in Fig. 1, Fig. 3 is an explanatory diagram of the operation of Fig. 1, and Fig. 4 is an illustration of the piezoelectric sensor shown in Fig. 1. FIG. 5 is an explanatory diagram of the operation of FIG. 1, and FIG. 6 is an explanatory diagram of the main part configuration of an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Pipeline, 11... Nozzle, 2... Force receiving body, 2
1... Flange part, 22... Recessed part, 3... Screw,
4a'. 4b'...Piezoelectric sensor, 41a', 4 lb'
...Element body, 42a' to 45a', 42b'
~45b'--thick film electrode, 46b', 47
b'--Dummy electrode, 5a. 5b, 5C... Insulator, 6... Fixed body, 7...
Electric circuit, 71... First human power processing circuit, 72... Second human power processing circuit, 73... Adder.
Claims (1)
体の流速または流量を測定する渦流量計において、前記
受力体の凹部内に固定され板状の圧電素子本体と該本体
の両平面に設けられた厚膜の電極とを具える第１、第２
の圧電セシサを有するセンサ部と、前記第１の圧電セン
サの出力と第２の圧電センサの出力とが加えられ外乱振
動に基づくノイズ成分を除去する演算器とを備え、前記
第１の圧電センサと第２の圧電センサとを外乱振動に基
づくノイズ成分の比と渦の揚力に基づく信号成分の比が
異なる二点に配置し、かつ、ノイズ成分の検出感度比が
常に所要比になるように前記第１の圧電センサの電極面
積に対して第２の圧電センサの電極の面積を異ならしめ
残された前記平面にダミー電極が設けられたことを特徴
とする渦流量計。In a vortex flowmeter that measures the flow velocity or flow rate of fluid by detecting the alternating force acting on a force receiving body due to Karman vortices, a plate-shaped piezoelectric element body fixed in a recess of the force receiving body and both flat surfaces of the body are used. a first and a second thick film electrode provided on the
a sensor unit having a piezoelectric sensor, and a computing unit to which the output of the first piezoelectric sensor and the output of the second piezoelectric sensor are added and removes a noise component based on disturbance vibration, the first piezoelectric sensor and the second piezoelectric sensor are arranged at two points where the ratio of the noise component based on disturbance vibration and the ratio of the signal component based on the lift of the vortex are different, and the detection sensitivity ratio of the noise component is always the required ratio. A vortex flow meter characterized in that the area of the electrode of the second piezoelectric sensor is made different from the area of the electrode of the first piezoelectric sensor, and a dummy electrode is provided on the remaining plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12828482U JPS5932926U (en) | 1982-08-25 | 1982-08-25 | vortex flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12828482U JPS5932926U (en) | 1982-08-25 | 1982-08-25 | vortex flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5932926U true JPS5932926U (en) | 1984-02-29 |
Family
ID=30291068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12828482U Pending JPS5932926U (en) | 1982-08-25 | 1982-08-25 | vortex flow meter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5932926U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS625258U (en) * | 1985-06-03 | 1987-01-13 |
-
1982
- 1982-08-25 JP JP12828482U patent/JPS5932926U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS625258U (en) * | 1985-06-03 | 1987-01-13 |
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