JPH0395923U - - Google Patents
Info
- Publication number
- JPH0395923U JPH0395923U JP329990U JP329990U JPH0395923U JP H0395923 U JPH0395923 U JP H0395923U JP 329990 U JP329990 U JP 329990U JP 329990 U JP329990 U JP 329990U JP H0395923 U JPH0395923 U JP H0395923U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- flow rate
- detects
- diode
- detection
- 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
- 238000001514 detection method Methods 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 1
Landscapes
- Measuring Volume Flow (AREA)
Description
第１図は本考案の１実施例の構成を示す回路図
、第２図は第１図に示す実施例の一部を改良した
他の部分実施例、第３図は第１図に示す実施例の
一部を改良した第２の部分実施例、第４図は第１
図に示す実施例をマイクロプロセツサを用いて実
現した実施例、第５図は従来の空検知回路の１例
を示す回路図である。
１０……導管、１１Ａ，１１Ｂ……流量検出電
極、１２……接液電極、１３……ダイオード、１
４……直流電源、１５……バツフア増幅器、１６
……比較器、１７……検出抵抗、１９……比較器
。
FIG. 1 is a circuit diagram showing the configuration of one embodiment of the present invention, FIG. 2 is another partial embodiment that is a partial improvement of the embodiment shown in FIG. 1, and FIG. 3 is an implementation of the embodiment shown in FIG. A second partial embodiment that improves a part of the example, FIG.
FIG. 5 is a circuit diagram showing an example of a conventional empty detection circuit, which is an example in which the embodiment shown in the figure is realized using a microprocessor. 10...Conduit, 11A, 11B...Flow rate detection electrode, 12...Liquid contact electrode, 13...Diode, 1
4...DC power supply, 15...Buffer amplifier, 16
... Comparator, 17 ... Detection resistor, 19 ... Comparator.
Claims (1)
とアースリングとの間に逆方向に流れるように接
続されたダイオードと検出抵抗とが直列に接続さ
れた直列回路に直流電流を流す直流電源と、前記
流量検出電極とダイオードとの接続点に接続され
前記流量検出電極に発生する直流電圧を検出する
第１電圧検出手段と、前記検出抵抗の両端の電圧
を検出する第２電圧検出手段と、これ等の第１、
第２電圧検出手段の出力信号の大きさを比較して
比較信号を出力する比較手段とを具備し、この比
較信号により前記導管の中の流体が空になつたか
否かを検出することを特徴とする電磁流量計。 a DC power source that causes a DC current to flow through a series circuit in which a diode and a detection resistor are connected in series between a flow rate detection electrode that detects the flow rate flowing in the conduit and a ground ring, and a detection resistor and a diode connected so that the flow flows in opposite directions; a first voltage detection means that is connected to a connection point between the flow rate detection electrode and the diode and detects a DC voltage generated in the flow rate detection electrode; a second voltage detection means that detects a voltage across the detection resistor; etc. 1st,
and comparing means for comparing the magnitudes of the output signals of the second voltage detecting means and outputting a comparison signal, and detecting whether or not the fluid in the conduit is empty based on the comparison signal. Electromagnetic flowmeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP329990U JPH0395923U (en) | 1990-01-18 | 1990-01-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP329990U JPH0395923U (en) | 1990-01-18 | 1990-01-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0395923U true JPH0395923U (en) | 1991-09-30 |
Family
ID=31507127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP329990U Pending JPH0395923U (en) | 1990-01-18 | 1990-01-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0395923U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009250302A (en) * | 2008-04-03 | 2009-10-29 | Jakuetsu Corp | Coupling fitting for play equipment |
-
1990
- 1990-01-18 JP JP329990U patent/JPH0395923U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009250302A (en) * | 2008-04-03 | 2009-10-29 | Jakuetsu Corp | Coupling fitting for play equipment |
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