JPS6438530U - - Google Patents
Info
- Publication number
- JPS6438530U JPS6438530U JP13263187U JP13263187U JPS6438530U JP S6438530 U JPS6438530 U JP S6438530U JP 13263187 U JP13263187 U JP 13263187U JP 13263187 U JP13263187 U JP 13263187U JP S6438530 U JPS6438530 U JP S6438530U
- Authority
- JP
- Japan
- Prior art keywords
- pair
- electrodes
- amplifiers
- guard
- electromotive force
- 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
- 230000003321 amplification Effects 0.000 claims 1
- 239000003990 capacitor Substances 0.000 claims 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 1
Landscapes
- Measuring Volume Flow (AREA)
Description
第１図は本考案の１実施例の要部の構成を示す
ブロツク図、第２図は本考案の第２の実施例の要
部を示すブロツク図、第３図は本考案の第３の実
施例の要部を示すブロツク図、第４図は本考案の
第４の実施例の要部を示すブロツク図、第５図は
本考案の第５の実施例の要部を示すブロツク図、
第６図は従来の電磁流量計の変換部の初段の近傍
の構成を示す構成図である。
１０，１１……電極、１２……共通電位点、１
３……信号ケーブル、１４，１５……心線、１６
，１７……内側シールド、１９，２０，２３……
演算増幅器、２１……差動増幅器。
Fig. 1 is a block diagram showing the configuration of the main part of one embodiment of the present invention, Fig. 2 is a block diagram showing the main part of the second embodiment of the invention, and Fig. 3 is a block diagram showing the main part of the second embodiment of the invention. FIG. 4 is a block diagram showing the main parts of the fourth embodiment of the present invention; FIG. 5 is a block diagram showing the main parts of the fifth embodiment of the present invention;
FIG. 6 is a configuration diagram showing the configuration near the first stage of the conversion section of a conventional electromagnetic flowmeter. 10, 11...electrode, 12...common potential point, 1
3... Signal cable, 14, 15... Core wire, 16
, 17... Inner shield, 19, 20, 23...
Operational amplifier, 21...differential amplifier.
Claims (1)
極と、この一対の電極からの各リード線に沿いこ
のリード線を絶縁して囲んだガードと、前記各電
極で検出された起電力が加えられる高入力インピ
ーダンスでかつ高利得の一対の増幅器と、この各
増幅器の出力に関連する電圧が入力に負帰還され
ると共に前記各ガードに一対のコンデンサを介し
て加え各電極と前記各ガードとの電位を実質的に
同一にする一対の接続手段と、前記一対の増幅器
の出力の差を出力する差動増幅手段とを具備する
ことを特徴とする電磁流量計。 A pair of electrodes detects the electromotive force generated in the liquid to be measured, a guard insulates and surrounds the lead wires along each lead wire from the pair of electrodes, and the electromotive force detected by each of the electrodes is added. a pair of amplifiers with high input impedance and high gain, and a voltage associated with the output of each amplifier is negatively fed back to the input and applied to each of the guards via a pair of capacitors, and a voltage is applied between each electrode and each guard. An electromagnetic flowmeter characterized by comprising: a pair of connection means for making potentials substantially the same; and a differential amplification means for outputting a difference between the outputs of the pair of amplifiers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13263187U JPH0545932Y2 (en) | 1987-08-31 | 1987-08-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13263187U JPH0545932Y2 (en) | 1987-08-31 | 1987-08-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6438530U true JPS6438530U (en) | 1989-03-08 |
| JPH0545932Y2 JPH0545932Y2 (en) | 1993-11-30 |
Family
ID=31389772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13263187U Expired - Lifetime JPH0545932Y2 (en) | 1987-08-31 | 1987-08-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0545932Y2 (en) |
-
1987
- 1987-08-31 JP JP13263187U patent/JPH0545932Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0545932Y2 (en) | 1993-11-30 |
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