JPH0429830U - - Google Patents
Info
- Publication number
- JPH0429830U JPH0429830U JP6949290U JP6949290U JPH0429830U JP H0429830 U JPH0429830 U JP H0429830U JP 6949290 U JP6949290 U JP 6949290U JP 6949290 U JP6949290 U JP 6949290U JP H0429830 U JPH0429830 U JP H0429830U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- pair
- resistor
- input terminal
- series
- 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
- 238000001514 detection method Methods 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Measuring Volume Flow (AREA)
Description
第１図は本考案の第１の実施例の構成を示すブ
ロツク図、第２図は本考案の第２の実施例の構成
を示すブロツク図、第３図は従来の電磁流量計の
構成を示すブロツク図である。
１０……導管、１１Ａ，１１Ｂ……検出電極、
１２……接地電極、１３Ａ，１３Ｂ，２０Ａ，２
０Ｂ……ダイオード、１４，２１……直流電源、
１５Ａ，１５Ｂ……演算増幅器、１６Ａ，１６Ｂ
……比較器、１７……信号処理回路。
Figure 1 is a block diagram showing the configuration of a first embodiment of the present invention, Figure 2 is a block diagram showing the configuration of a second embodiment of the present invention, and Figure 3 is a diagram showing the configuration of a conventional electromagnetic flowmeter. FIG. 10... conduit, 11A, 11B... detection electrode,
12...Ground electrode, 13A, 13B, 20A, 2
0B...Diode, 14,21...DC power supply,
15A, 15B...Operation amplifier, 16A, 16B
... Comparator, 17 ... Signal processing circuit.
Claims (1)
他方の入力端に一対の検出電極からの信号が入力
されこれをインピーダンス変換して電極信号とし
て出力する一対の演算増幅器と、前記一対の検出
電極間にダイオードと抵抗とが直列に接続された
一対の直列回路が直列に接続されると共にこれ等
の直列回路の接続点と接地電極間に前記ダイオー
ドが逆バイアスになるように接続された直流電源
と、前記ダイオードと抵抗との各接続点と前記演
算増幅器の一方の入力端との間に接続され前記抵
抗に対して十分に小さいインピーダンスを持つ一
対のコンデンサと、前記各電極信号とあらかじめ
決定された基準電圧と比較して比較信号を信号処
理回路に出力する比較手段を具備することを特徴
とする電磁流量計。 A pair of operational amplifiers that receive signals from a pair of detection electrodes from an output terminal to one input terminal to which negative feedback is applied to the other input terminal, convert the impedance of the signal, and output the signal as an electrode signal; A pair of series circuits in which a diode and a resistor are connected in series between electrodes are connected in series, and the diodes are connected between the connection point of these series circuits and a ground electrode so that the diodes are reverse biased. a pair of capacitors connected between a power source, each connection point between the diode and the resistor, and one input terminal of the operational amplifier and having a sufficiently small impedance with respect to the resistor; An electromagnetic flowmeter characterized in that it is equipped with a comparison means for comparing the reference voltage with a reference voltage and outputting a comparison signal to a signal processing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6949290U JP2505817Y2 (en) | 1990-06-29 | 1990-06-29 | Electromagnetic flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6949290U JP2505817Y2 (en) | 1990-06-29 | 1990-06-29 | Electromagnetic flow meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0429830U true JPH0429830U (en) | 1992-03-10 |
| JP2505817Y2 JP2505817Y2 (en) | 1996-08-07 |
Family
ID=31604843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6949290U Expired - Fee Related JP2505817Y2 (en) | 1990-06-29 | 1990-06-29 | Electromagnetic flow meter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2505817Y2 (en) |
-
1990
- 1990-06-29 JP JP6949290U patent/JP2505817Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2505817Y2 (en) | 1996-08-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |