JPH0676937B2 - Electronic pressure gauge - Google Patents
Electronic pressure gaugeInfo
- Publication number
- JPH0676937B2 JPH0676937B2 JP12852686A JP12852686A JPH0676937B2 JP H0676937 B2 JPH0676937 B2 JP H0676937B2 JP 12852686 A JP12852686 A JP 12852686A JP 12852686 A JP12852686 A JP 12852686A JP H0676937 B2 JPH0676937 B2 JP H0676937B2
- Authority
- JP
- Japan
- Prior art keywords
- ram
- pressure
- cylinder
- permanent magnet
- electromagnet
- 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.)
- Expired - Fee Related
Links
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- Measuring Fluid Pressure (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、気体や液体等の所謂流体の圧力を連続して高
精度に測定し得る装置に係り、とりわけ、差圧力を測定
するものに関する。Description: TECHNICAL FIELD The present invention relates to a device capable of continuously and highly accurately measuring the pressure of a so-called fluid such as gas or liquid, and more particularly to a device for measuring a differential pressure. .
（従来の技術） 従来、この種の測定装置としては、例えば特開昭59−94
029号に開示されたものが知られている。(Prior Art) Conventionally, as a measuring device of this type, for example, Japanese Patent Laid-Open No. 59-94
The one disclosed in No. 029 is known.
これは、電子ばかりを利用する事に依り流体の圧力を連
続的に測定する様にしたものであると共に、シリンダと
ラムとの間にスリーブを介設してこれを回転駆動機構に
依り回転させる事に依りとりわけ、スリーブとラム間の
摩擦抵抗を減じてラムの昇降を適確に行なわしる様にし
たものである。This is one in which the pressure of the fluid is continuously measured by utilizing only electrons, and a sleeve is provided between the cylinder and the ram and rotated by a rotary drive mechanism. In particular, the frictional resistance between the sleeve and the ram is reduced so that the ram can be properly moved up and down.
ところが、この様な測定装置は、シリンダとスリーブの
間の流体の洩れを阻止する為に実際にはゴムのＯリング
を使用する等のシール機構が必要となるが、このシール
機構は高圧になるとスリーブの回転に大きな抵抗を示
し、回転駆動機構の動力を大きくし、且つシール機構の
耐久性も要求される等、不利な点がある。However, such a measuring device actually requires a sealing mechanism such as using a rubber O-ring in order to prevent the fluid from leaking between the cylinder and the sleeve. There are disadvantages such as great resistance to the rotation of the sleeve, increased power of the rotary drive mechanism, and durability of the seal mechanism.
又、スリーブは、回転駆動機構に所謂機械的に連繋され
てこれに依り回転されるので、回転駆動機構で発生した
振動等がスリーブに直接伝達され、これに依りスリーブ
とラムとの間の摩擦抵抗に著しい影響を与えてラムの昇
降が適確に行なわれなくなり、測定誤差がでるという難
点もあつた。Further, the sleeve is so-called mechanically connected to the rotary drive mechanism and is rotated by this, so that vibrations and the like generated in the rotary drive mechanism are directly transmitted to the sleeve, which causes friction between the sleeve and the ram. There was also a drawback that the resistance was significantly affected and the ram could not be lifted and lowered accurately, resulting in a measurement error.
更に、前記測定装置は、単一の圧力流体を導入してその
圧力を測定するものであるので、異なる二つの圧力流体
の差圧力を連続して測定する事ができなかった。Furthermore, since the measuring device introduces a single pressure fluid and measures the pressure, it is not possible to continuously measure the differential pressure between two different pressure fluids.
（発明が解決しようとする問題点） 本発明は、叙上の問題点に鑑み、これを解消する為に創
案されたもので、その目的とする処は、製作が容易であ
ると共に、測定誤差を極力少なくする様にし、然も、異
なる二つの圧力流体の差圧力を連続して測定する様にし
た電子圧測装置を提供するにある。(Problems to be Solved by the Invention) In view of the above problems, the present invention was devised to solve the problems, and the purpose thereof is that the production is easy and the measurement error is It is an object of the present invention to provide an electronic pressure measuring device in which the differential pressure between two different pressure fluids can be continuously measured by minimizing the pressure.
（問題点を解決するための手段） 本発明の電子圧測装置は、内部に上下のシリンダ室が形
成されたシリンダと、シリンダに回転且つ昇降可能に貫
通して嵌合されると共に上下のシリンダ室に臨む部分に
は上下の受圧面が形成されたラムと、シリンダに設けら
れて上下のシリンダ室に夫々圧力流体を導びく為の導圧
路と、ラムの下端が接触する受皿を上部に備えた電子ば
かりと、ラムの外突部分に付設された永久磁石と、永久
磁石に近接して固定側に設けられ永久磁石をラムの軸心
廻りに揺動させ得る電磁石と、から構成した事に特徴が
存する。(Means for Solving the Problems) An electronic pressure measuring device according to the present invention is a cylinder in which upper and lower cylinder chambers are formed, and a cylinder which is rotatably and vertically pierced through and fitted to the cylinder. A ram with upper and lower pressure receiving surfaces is formed in the part facing the chamber, pressure guiding paths provided in the cylinder for guiding the pressure fluid to the upper and lower cylinder chambers, respectively, and a receiving plate at the lower end of the ram is in the upper part. Electron included, a permanent magnet attached to the outer protruding portion of the ram, and an electromagnet that is provided near the permanent magnet on the fixed side and can swing the permanent magnet around the axis of the ram. There is a feature in.
（作 用） ラムが下動すべく、被測定物である異なる圧力を有する
二つの圧力流体を夫々導圧路を介して上下のシリンダ室
に導入する。(Operation) In order for the ram to move downward, two pressure fluids having different pressures, which are the objects to be measured, are introduced into the upper and lower cylinder chambers via the pressure guiding paths.
そうすると、ラムの上下の受圧面には、夫々異なる二つ
の圧力流体の圧力が作用するので、下向きの差圧力が発
生し、これに呼応してラムが下動する。Then, the pressures of the two different pressure fluids act on the upper and lower pressure receiving surfaces of the ram, so that a downward pressure difference is generated, and in response thereto, the ram moves downward.
そして、その下動力が電子ばかりの受皿に伝達されてこ
の電子ばかりに依り二つの圧力流体の差圧力を測定でき
る。Then, the motive power is transmitted to a pan containing only electrons, and the differential pressure between the two pressure fluids can be measured only by the electrons.
この時、電磁石と永久磁石とに依る磁力的揺動作用にて
ラムがその軸心廻りに揺動されるので、ラムとシリンダ
間の摩擦抵抗がなくなり、この為にラムの昇降動作が適
確に行なわれる。At this time, the ram is rocked around its axis by the magnetically oscillating action of the electromagnet and the permanent magnet, so that the frictional resistance between the ram and the cylinder is eliminated, and therefore the ram lifting operation is properly performed. To be done.
（実施例） 以下、本発明の実施例を、図面に基づいて説明する。(Example) Hereinafter, the Example of this invention is described based on drawing.
第１図は、本発明の実施例に係る電子圧測装置の一部を
縦断して示す概要正面図。第２図は、永久磁石と電磁石
との関係を示す要部拡大平面図である。FIG. 1 is a schematic front view showing a part of an electronic pressure measuring device according to an embodiment of the present invention in a longitudinal section. FIG. 2 is an enlarged plan view of an essential part showing the relationship between the permanent magnet and the electromagnet.
電子圧測装置１は、シリンダ２、ラム３、導圧路4,5、
電子ばかり６、永久磁石７、電磁石８とからその主要部
が構成されている。The electronic pressure measuring device 1 includes a cylinder 2, a ram 3, pressure guiding paths 4,5,
The electron balance 6, the permanent magnet 7, and the electromagnet 8 constitute the main part.
シリンダ２は、内部に上下のシリンダ室9,10が形成され
たものである。The cylinder 2 has upper and lower cylinder chambers 9 and 10 formed therein.
この例では、金属に依り作製された蓋体11とこの下の本
体12とを備えて居り、蓋体11の内部には下方が開放した
上部シリンダ室９が形成されていると共に、本体12の内
部には下部シリンダ室10が形成され、これらはその間に
シール材13,14を介装してボルト15に依り合体されてい
る。In this example, a lid 11 made of metal and a main body 12 below the lid 11 are provided. Inside the lid 11, an upper cylinder chamber 9 with an open bottom is formed, and A lower cylinder chamber 10 is formed inside, and these are united by a bolt 15 with sealing materials 13 and 14 interposed therebetween.
而して、蓋体11には、上部シリンダ室９から上方外部に
達する上部穴が穿設されていると共に、本体12には、下
部シリンダ室10から上部シリンダ室９に達する中央穴と
下部シリンダ室10から下方外部に達する下部穴とが穿設
されて居り、これらの穴には、夫々中心に貫孔16,17,18
を備えてセラミックに依り作製された鍔付きのブッシュ
19,20,21が夫々接着剤を介して嵌挿固定されている。ブ
ッシュ19と20は、連通路を介して一体に作製されてい
る。Thus, the lid body 11 is provided with an upper hole reaching from the upper cylinder chamber 9 to the upper outside, and the main body 12 is provided with a central hole reaching from the lower cylinder chamber 10 to the upper cylinder chamber 9 and a lower cylinder. There is a lower hole that extends downward from the chamber 10 to the outside, and these holes respectively have through holes 16, 17, 18 in the center.
Bush with collar made of ceramic with
19, 20 and 21 are fitted and fixed via an adhesive respectively. The bushes 19 and 20 are integrally manufactured via a communication passage.
ラム３は、シリンダ２に回転且つ昇降可能に貫通して嵌
合されると共に上下のシリンダ室9,10に臨む部分には上
下の受圧面22,23が形成されたものである。The ram 3 is fitted through the cylinder 2 so as to be rotatable and vertically movable, and has upper and lower pressure receiving surfaces 22 and 23 formed in portions facing the upper and lower cylinder chambers 9 and 10.
この例では、上、中、下の軸部24,25,26を備えて上下の
軸部24,26が同一径で中央の軸部25より細径にしてあ
り、中央の軸部25の上下に同一面積を有する上下の受圧
面22,23が形成されて居り、これらはセラミックに依り
一体的に作製されている。In this example, the upper, middle, and lower shaft portions 24, 25, 26 are provided, and the upper and lower shaft portions 24, 26 have the same diameter and a smaller diameter than the central shaft portion 25. Upper and lower pressure-receiving surfaces 22 and 23 having the same area are formed in, and these are integrally made of ceramic.
而して、上、中、下の軸部24,25,26は、夫々上、中、下
のブッシュ19,20,21の各貫孔16,17,18に回転且つ昇降可
能に嵌合され、上下の軸部24,26はシリンダ２から外突
しいると共に、上下の受圧面22,23は上下のシリンダ室
9,10に臨んでいる。Thus, the upper, middle, and lower shaft portions 24, 25, 26 are fitted in the through holes 16, 17, 18 of the upper, middle, and lower bushes 19, 20, 21 respectively so as to be rotatable and vertically movable. , The upper and lower shaft portions 24 and 26 project from the cylinder 2, and the upper and lower pressure receiving surfaces 22 and 23 are the upper and lower cylinder chambers.
It faces 9,10.
導圧路4,5は、シリンダ２に設けられて上下のシリンダ
室9,10に夫々圧力流体を導びく為のものである。The pressure guiding paths 4 and 5 are provided in the cylinder 2 and are for guiding the pressure fluid to the upper and lower cylinder chambers 9 and 10, respectively.
この例では、一方の導圧路４がシリンダ２の蓋体11に設
けられて上部シリンダ室９の上部に達すると共に、他方
の導圧路５がシリンダ２の本体12に設けられて下部シリ
ンダ室10の上部に達して居り、導圧路４には高圧の圧力
流体が、導圧路５には低圧の圧力流体が夫々供給され
る。In this example, one pressure guiding path 4 is provided in the lid 11 of the cylinder 2 and reaches the upper part of the upper cylinder chamber 9, and the other pressure guiding path 5 is provided in the main body 12 of the cylinder 2 and is in the lower cylinder chamber. High pressure fluid is supplied to the pressure guiding passage 4 and low pressure fluid is supplied to the pressure guiding passage 5, respectively.
而して、シリンダ２の本体12には、上下のシリンダ室9,
10の下部に達するドレン路27,28が設けられていると共
に、これらには夫々通断路（図示せず）が接続されてい
る。Thus, in the main body 12 of the cylinder 2, the upper and lower cylinder chambers 9,
Drain passages 27, 28 reaching the lower part of 10 are provided, and a disconnecting passage (not shown) is connected to each of them.
電子ばかり６は、ラム３の下端が接触する受皿29を上部
に備えたものである。The electronic balance 6 is provided with a tray 29 at the upper part, which the lower end of the ram 3 contacts.
この例では、表示部30を備えた本体31と、これの上部に
設けられた受皿29とから構成されて居り、被測定物の重
量をその表示部30に表示すると共に、被測定物の重量に
所定の修正値若しくは換算値を加味して演算し、演算後
の数値を同時に表示するものが用いられている。表示部
30での表示は、デジタル表示されるものが望ましい。In this example, a main body 31 having a display unit 30 and a saucer 29 provided on the upper portion of the main unit 31 are provided, and the weight of the measured object is displayed on the display unit 30 and the weight of the measured object is displayed. There is used a device which calculates by adding a predetermined correction value or a conversion value and displays the numerical value after the calculation at the same time. Display
The display at 30 is preferably digital.
而して、電子ばかり６の本体31には支脚32を介してシリ
ンダ２が取付けられていると共に、電子圧ばかり６の受
皿29の上面にはラム３の下端が当触される。Thus, the cylinder 2 is attached to the main body 31 of the electronic balance 6 via the supporting leg 32, and the lower end of the ram 3 is in contact with the upper surface of the pan 29 of the electronic pressure balance 6.
永久磁石７は、ラム３の外突部分に付設されたものであ
る。The permanent magnet 7 is attached to the outer protruding portion of the ram 3.
この例では、ラム３の下突部分に水平なるアーム33を介
して付設されて居り、両端のN,S極がラム３と同心円周
上に沿う様に配されている。In this example, it is attached to the lower projecting portion of the ram 3 via a horizontal arm 33, and the N and S poles at both ends are arranged so as to be concentric with the ram 3.
電磁石８は、永久磁石７に近接して固定側に設けられ永
久磁石７をラム３の軸心廻りに揺動させ得るものであ
る。The electromagnet 8 is provided near the permanent magnet 7 on the fixed side and can swing the permanent magnet 7 around the axis of the ram 3.
この例では、鉄心とコイルとから成る通常のものをブラ
ケット34を介してシリンダ２に取付けて居り、鉄心の両
端はラム３と同心円周上に沿う様に配置されている。In this example, a normal one composed of an iron core and a coil is attached to the cylinder 2 via a bracket 34, and both ends of the iron core are arranged so as to be concentric with the ram 3.
而して、電磁石８のコイルには発振器35が接続されて居
り、これは鉄心の両端にできるN,S極が所定時間毎に反
転させるものが用いられる。Thus, the oscillator 35 is connected to the coil of the electromagnet 8, and the one in which the N and S poles formed at both ends of the iron core are inverted at predetermined time intervals is used.
次に、この様な構成に基づいて作用を述解する。Next, the operation will be described based on such a configuration.
先ず、ドレン路27,28に接続されている通断路（図示せ
ず）を遮断状態にする。First, a communication path (not shown) connected to the drain paths 27 and 28 is turned off.
そして、被測定物である高圧の圧力流体を導圧路４を介
してシリンダ２の上部シリンダ室９に導入すると共に、
低圧の圧力流体を導圧路５を介して下部シリンダ室10に
導入し、発振器35を作動させる。Then, while introducing a high-pressure fluid, which is the object to be measured, into the upper cylinder chamber 9 of the cylinder 2 through the pressure guiding path 4,
A low pressure fluid is introduced into the lower cylinder chamber 10 through the pressure guiding path 5 to activate the oscillator 35.
そうすると、ラム３の上部受圧面22と下部受圧面23に
は、夫々高圧と低圧の圧力流体が作用するので、ラム３
には下向きの差圧力が発生し、これに呼応してラム３が
下動する。Then, high pressure and low pressure fluids act on the upper pressure receiving surface 22 and the lower pressure receiving surface 23 of the ram 3, respectively.
A downward differential pressure is generated in the ram 3, and the ram 3 moves downward in response to this.
そして、その下動力が電子ばかり６の受皿29に伝達され
る。Then, the lower power is transmitted to the tray 29 of the electronic balance 6.
電子ばかり６では、前記下動力に所定の変換値が加味さ
れて演算され、高低二つの圧力流体の差圧力をその表示
部30に表示する。The electronic balance 6 is calculated by adding a predetermined conversion value to the lower power, and displays the differential pressure between the high and low pressure fluids on the display unit 30.
他方、発振器35の制御に依り電磁石８の鉄心の両端にで
きるN,S極は、短時間毎に反転される。つまり、（N,S）
→（S,N）→（N,S）……という様に反転されるので、そ
の磁力線の方向も変り、これに隣接した永久磁石７とは
反発したり吸引したりする。On the other hand, the N and S poles formed at both ends of the iron core of the electromagnet 8 under the control of the oscillator 35 are reversed every short time. That is, (N, S)
Since it is reversed as → (S, N) → (N, S) ..., the direction of the line of magnetic force also changes, and the permanent magnet 7 adjacent thereto repels or attracts.
そうすると、固定された電磁石８に対して可動できる永
久磁石７が第２図に示す矢印方向に揺動する事になり、
この揺動はアーム33を介してラム３に伝達され、これが
軸心廻りに揺動する。Then, the permanent magnet 7 movable with respect to the fixed electromagnet 8 swings in the arrow direction shown in FIG.
This swing is transmitted to the ram 3 via the arm 33, and this swings about the axis.
ラム３がその軸心廻りに揺動すると、シリンダ２とラム
３との間、つまり、シリンダ２の上部ブッシュ19の貫孔
16とラム３の上軸部24間、中央ブッシュ20の貫通17と中
央軸部25間、下部ブッシュ21の貫孔18と下軸部26間に夫
々発生する摩擦抵抗は、動的なものとなり、静的なもの
に比べて小さくなる。When the ram 3 swings around its axis, it is between the cylinder 2 and the ram 3, that is, the through hole of the upper bush 19 of the cylinder 2.
The frictional resistance generated between 16 and the upper shaft 24 of the ram 3, between the penetration 17 of the central bush 20 and the central shaft 25, and between the through hole 18 of the lower bush 21 and the lower shaft 26 is dynamic. , Smaller than static ones.
この為、ラム３に作用する下動力は、適確に電子ばかり
６の受皿29に伝達される。Therefore, the lower power acting on the ram 3 is accurately transmitted to the pan 29 of the electron balance 6.
電磁石８と永久磁石７とは、離隔していてこの間には磁
力線が飛び交うだけであるので、所謂機械的に連繋した
ものの様に駆動源の振動等がこの間から伝達される事は
ない。Since the electromagnets 8 and the permanent magnets 7 are separated from each other and magnetic force lines only fly between them, vibrations of the drive source and the like are not transmitted between them, unlike what is called mechanically connected.
ラム３の昇降量は、僅かであるので、ラム３に作用する
揺動力がほとんど変らないと共に、揺動力以外の昇降力
がラム３に作用する事もほとんどない。Since the amount of elevation of the ram 3 is small, the oscillating force acting on the ram 3 hardly changes, and the elevation force other than the oscillating force hardly acts on the ram 3.
上下のシリンダ室9,10内の圧力流体をドレンさせる場合
は、ドレン路27,28に接続された通断路（図示せず）を
連通状態にする。When the pressure fluid in the upper and lower cylinder chambers 9 and 10 is to be drained, the disconnecting passages (not shown) connected to the drain passages 27 and 28 are brought into a communicating state.
尚、シリンダ２は、先の実施例では、蓋体11と本体12と
に依り二分割したが、これに限らず、例えば一体的にし
たり、三以上に分割しても良い。In the above embodiment, the cylinder 2 is divided into two parts depending on the lid 11 and the main body 12, but the present invention is not limited to this, and it may be integrated or divided into three or more parts.
シリンダ２は、先の実施例では、蓋体11と本体12を金属
製にすると共に、上、中、下のブッシュ19,20,21をセラ
ミック製にして合体させたが、これに限らず、例えばこ
れらを同一材料にして一体的に作製しても良い。In the cylinder 2, the lid 11 and the main body 12 are made of metal, and the upper, middle, and lower bushes 19, 20, 21 are made of ceramic to be united in the above embodiment, but the present invention is not limited to this. For example, these may be made of the same material and integrally manufactured.
ラム３は、先の実施例では、上下の軸部24,26を中央の
軸部25より細径にする事に依り上下の受圧面22,23を形
成したが、これに限らず、例えば上下の軸部24,26を中
央の軸部25より大径にする事に依り上下の受圧面を形成
しても良い。この場合、シリンダ２の上、中、下のブッ
シュ19,20,21は、これに呼応させると共に、上部シリン
ダ室９には低圧の圧力流体を、下部シリンダ室10には高
圧の圧力流体を夫々導入する。In the above embodiment, the ram 3 has the upper and lower pressure receiving surfaces 22 and 23 formed by making the upper and lower shaft portions 24 and 26 smaller in diameter than the central shaft portion 25, but the present invention is not limited to this. The upper and lower pressure-receiving surfaces may be formed by making the shaft portions 24 and 26 of the shaft diameter larger than that of the central shaft portion 25. In this case, the upper, middle, and lower bushes 19, 20, 21 of the cylinder 2 respond to this, and low pressure fluid is supplied to the upper cylinder chamber 9 and high pressure fluid is supplied to the lower cylinder chamber 10, respectively. Introduce.
ラム３は、先の実施例では、セラミック製であつたが、
これに限らず、他の材料のものであつても良い。The ram 3 was made of ceramic in the previous embodiment,
The material is not limited to this, and other materials may be used.
電子ばかり６は、先の実施例では、検出した圧力流体の
差圧力をその表示部30で表示するものであつたが、これ
に限らず、例えば検出した圧力流体の差圧力を出力信号
として外部に出力できるものであつても良い。この様に
すれば、出力信号に依り遠隔地にある他の表示部に圧力
流体の差圧力を表示したり、出力信号を利用して圧力流
体の圧力制御を行なつたりする事ができる。Although the electronic balance 6 displays the detected differential pressure of the pressure fluid on the display unit 30 in the above embodiment, the present invention is not limited to this. For example, the detected differential pressure of the pressure fluid is output as an external signal. It may be one that can be output to. By doing so, it is possible to display the differential pressure of the pressure fluid on another display unit at a remote location according to the output signal, and to control the pressure of the pressure fluid using the output signal.
永久磁石７は、先の実施例では、ラム３の下突部分に付
設したが、これに限らず、例えばラム３の上突部分に付
設しても良い。この場合、電磁石８もこれに対応させ
る。Although the permanent magnet 7 is attached to the lower protruding portion of the ram 3 in the above-described embodiment, the permanent magnet 7 is not limited to this and may be attached to the upper protruding portion of the ram 3, for example. In this case, the electromagnet 8 also corresponds to this.
（発明の効果） 以上既述した如く本発明に依れば、次の様な優れた効果
を奏する事ができる。(Effects of the Invention) As described above, according to the present invention, the following excellent effects can be achieved.
（１） ラムを揺動する様にしたので、従来の圧力測定
装置の如くシリンダとラムとの間に精度の高いスリーブ
を設ける必要がなく、この為、製作が容易になる。(1) Since the ram is oscillated, it is not necessary to provide a highly accurate sleeve between the cylinder and the ram as in the conventional pressure measuring device, which facilitates the manufacture.
（２） 電磁石と永久磁石を用いて所謂磁力的にラムを
揺動させる様にしたので、従来の圧力測定装置の如く回
転駆動機構で発生した振動等に依り測定誤差が起生する
事がなく、それだけ測定誤差の少ない流体の圧力測定を
行なう事ができる。(2) Since the ram is so-called magnetically oscillated using the electromagnet and the permanent magnet, the measurement error is not caused by the vibration generated by the rotary drive mechanism like the conventional pressure measuring device. Therefore, it is possible to measure the pressure of the fluid with less measurement error.
（３） シリンダには上下のシリンダ室を形成すると共
に、これらに夫々達する導圧路を設け、ラムには上下の
シリンダ室に臨む上下の受圧面を形成したので、異なる
二つの圧力流体の差圧力を連続して測定する事ができ
る。(3) The upper and lower cylinder chambers are formed in the cylinder, the pressure guiding paths reaching each of them are provided, and the upper and lower pressure receiving surfaces facing the upper and lower cylinder chambers are formed in the ram. The pressure can be measured continuously.
（４） 単一の圧力流体を一方のシリンダ室に送る事に
依り従来の圧力測定装置と同様にこの流体の圧力を連続
して測定する事もできる。(4) By sending a single pressure fluid to one of the cylinder chambers, the pressure of this fluid can be continuously measured as in the conventional pressure measuring device.
（５） 永久磁石をラムに設けたので、これをできるだ
け小さく且つ軽くする事ができ、この為、ラムの昇降動
作に極力影響を与えない様にする事ができる。(5) Since the permanent magnet is provided on the ram, it can be made as small and light as possible, and therefore, the raising and lowering operation of the ram can be prevented as much as possible.
（６） 電磁石を固定側に設けたので、その配線等が行
ない易く、然もラムに無関係でこれが行なえる。(6) Since the electromagnet is provided on the fixed side, its wiring and the like are easy to perform, and this can be done regardless of the ram.
（７） 永久磁石と電磁石は、ラムやシリンダ等の外側
に設けるので、その取付けや調整が極めて容易に行なう
事ができる。(7) Since the permanent magnet and the electromagnet are provided outside the ram, the cylinder, etc., they can be attached and adjusted very easily.
第１図は、本発明の実施例に係る電子圧測装置の一部を
縦断して示す概要正面図。 第２図は、永久磁石と電磁石との関係を示す要部拡大平
面図である。 １……電子圧測装置 ２……シリンダ ３……ラム 4,5……導圧管 ６……電子ばかり ７……永久磁石 ８……電磁石FIG. 1 is a schematic front view showing a part of an electronic pressure measuring device according to an embodiment of the present invention in a longitudinal section. FIG. 2 is an enlarged plan view of an essential part showing the relationship between the permanent magnet and the electromagnet. 1 …… Electronic pressure measuring device 2 …… Cylinder 3 …… Ram 4,5 …… Pressure tube 6 …… Electron only 7 …… Permanent magnet 8 …… Electromagnet
Claims (1)
ンダと、シリンダに回転且つ昇降可能に貫通して嵌合さ
れると共に上下のシリンダ室に臨む部分には上下の受圧
面が形成されたラムと、シリンダに設けられて上下のシ
リンダ室に夫々圧力流体を導びく為の導圧路と、ラムの
下端が接触する受皿を上部に備えた電子ばかりと、ラム
の外突部分に付設された永久磁石と、永久磁石に近接し
て固定側に設けられ永久磁石をラムの軸心廻りに揺動さ
せ得る電磁石と、から構成した事を特徴とする電子圧測
装置。1. A cylinder in which upper and lower cylinder chambers are formed, and a cylinder which is fitted through the cylinder so as to be rotatable and can move up and down, and upper and lower pressure receiving surfaces are formed in portions facing the upper and lower cylinder chambers. The ram, a pressure guiding path for guiding the pressure fluid to the upper and lower cylinder chambers respectively in the cylinder, and an electronic instrument equipped with a pan at the top for contacting the lower end of the ram are attached to the outer projecting part of the ram. An electronic pressure measuring device comprising: a permanent magnet; and an electromagnet that is provided near the permanent magnet on a fixed side and can swing the permanent magnet around the axis of a ram.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12852686A JPH0676937B2 (en) | 1986-06-03 | 1986-06-03 | Electronic pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12852686A JPH0676937B2 (en) | 1986-06-03 | 1986-06-03 | Electronic pressure gauge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62285030A JPS62285030A (en) | 1987-12-10 |
| JPH0676937B2 true JPH0676937B2 (en) | 1994-09-28 |
Family
ID=14986926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12852686A Expired - Fee Related JPH0676937B2 (en) | 1986-06-03 | 1986-06-03 | Electronic pressure gauge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0676937B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7185543B2 (en) | 2003-02-20 | 2007-03-06 | Fujikin Incorporated | Ultra-precision micro-differential pressure measuring device and ultra-precision differential pressure measuring device |
-
1986
- 1986-06-03 JP JP12852686A patent/JPH0676937B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7185543B2 (en) | 2003-02-20 | 2007-03-06 | Fujikin Incorporated | Ultra-precision micro-differential pressure measuring device and ultra-precision differential pressure measuring device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62285030A (en) | 1987-12-10 |
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