JPS61272630A - Measuring instrument for solid specific gravity - Google Patents
Measuring instrument for solid specific gravityInfo
- Publication number
- JPS61272630A JPS61272630A JP11589285A JP11589285A JPS61272630A JP S61272630 A JPS61272630 A JP S61272630A JP 11589285 A JP11589285 A JP 11589285A JP 11589285 A JP11589285 A JP 11589285A JP S61272630 A JPS61272630 A JP S61272630A
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- JP
- Japan
- Prior art keywords
- sample
- weight
- data
- water
- air
- 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.)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、試料の空気中重量と水中重量を測定し、その
各測定値から、試料の比重を求める装置に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an apparatus for measuring the weight in air and weight in water of a sample, and determining the specific gravity of the sample from each of the measured values.
〈従来の技術〉
この種の比重測定装置においては、一般に、試料皿を下
方に懸吊した電子天ぴんと、その試料皿上の試料を水没
させる為の水槽装置とを備えており、試料皿への試料の
載せ降ろしと、後述する手作業を除いて、他は自動的に
一定のシーケンスのもとに次のような手順で測定動作が
行われる。すなわち、空気中の重量測定、水槽装置の駆
動による試料の水没、水中重量測定、そして空気中重量
と水中重量とから試料の比重を演算する。この比重の演
算に当たっては、水の比重、空気の比重。<Prior art> This type of specific gravity measuring device is generally equipped with an electronic balance with a sample plate suspended below, and a water tank device for submerging the sample on the sample plate. Except for the loading and unloading of the sample and the manual operations described below, the measurement operation is performed automatically in a fixed sequence according to the following steps. That is, the weight is measured in air, the sample is immersed in water by driving an aquarium, the weight is measured in water, and the specific gravity of the sample is calculated from the weight in air and the weight in water. When calculating this specific gravity, the specific gravity of water and the specific gravity of air are used.
および試料の水中への浸漬に伴う水面上昇による試料皿
懸吊具への浮力の変化分等に関して、補正が行われる。Also, corrections are made for changes in the buoyancy force on the sample plate suspension due to the rise in the water level as the sample is immersed in the water.
〈発明が解決しようとする問題点〉
ところで、水中重量の測定値に誤差を与える大きな要因
として、試料が水没したときに、試料や試料皿等に付着
する気泡がある。この気泡の付着は、演算時における補
正は不可能であるばかりでなく、外観上その付着の有無
の確認も困難である。<Problems to be Solved by the Invention> By the way, a major factor causing errors in the measured value of weight in water is air bubbles that adhere to the sample, sample plate, etc. when the sample is submerged in water. Not only is it impossible to correct the adhesion of bubbles during calculation, but it is also difficult to confirm the presence or absence of the adhesion from the outside.
その為、従来の装置においては、空気中重量の測定完了
後に、試料を一珪装置外に取り出して、別途用意された
水槽内に浸し、試料の濡れ性を向上させて気泡の付着を
防止する等の手作業を必要としていた。Therefore, in conventional devices, after the measurement of weight in air is completed, the sample is taken out of the Ikkei device and immersed in a separately prepared water tank to improve the wettability of the sample and prevent air bubbles from adhering to it. This required manual labor.
本発明の目的は、」二連の如き手作業を要することなく
、水中重量の測定時に自動的に試料や試料皿への気を包
の付着を防止することのできる、固体比重測定装置のI
に供を目的としている。The object of the present invention is to provide an I/O solid specific gravity measuring device that can automatically prevent air from adhering to a sample or sample dish when measuring weight in water without requiring two manual operations.
It is intended to serve as a food source.
く問題点を解決する為の手段〉
本発明の特徴とするところは、試料凱上の試料を水没さ
せる為の水槽装置を、試料を空気中および水中の間で所
定回数往復させるよう構成するとともに、その往復の後
、水中重量の測定値を得るよう構成したことにある。Means for Solving the Problems> The present invention is characterized by configuring a water tank device for submerging the sample on the sample container so as to cause the sample to reciprocate between air and water a predetermined number of times. , after the reciprocation, the underwater weight measurement value is obtained.
〈作用〉
水中重量の測定値を得る前に、水槽装置によって試料を
空気中と水中との間で往復させることにより、試料およ
び試料皿等番ご付着する気泡が取り除かれ、気泡イχ1
着による水中重量測定誤差の発生が防止される。<Operation> Before obtaining the measured value of the weight in water, the sample is moved back and forth between the air and the water using the water tank device, which removes air bubbles that adhere to the sample and the sample plate, and eliminates air bubbles.
Errors in underwater weight measurement due to wear are prevented.
〈実施例〉 本発明の実施例を、以下、図面に基づいて説明する。<Example> Embodiments of the present invention will be described below based on the drawings.
第1図は本発明実施例の構成図である。架台1のL面に
載せられた電子天びん2には、試料皿2aが懸耐されて
いる。試料皿2aの下方には、水槽上下駆動装置3にに
載l゛られた水槽4が配設されている。水槽に下駆動装
置3は、モータ駆動回路5によって駆動される。内蔵す
るモータの回動により、水41v4を4一方又は下方に
変位させることができる。七〜り駆動回路5ば、シーケ
ンスコントローラ6からの指令に基づいて作動される。FIG. 1 is a block diagram of an embodiment of the present invention. A sample dish 2a is suspended from an electronic balance 2 placed on the L side of the pedestal 1. A water tank 4 mounted on a water tank vertical drive device 3 is disposed below the sample dish 2a. The aquarium lower drive device 3 is driven by a motor drive circuit 5. By rotating the built-in motor, the water 41v4 can be displaced to one side or downward. The seventh drive circuit 5 is operated based on commands from the sequence controller 6.
電子天びん2は、試料皿2a−トの荷重を測定し、シー
ケンスコント夏コーラ6からの指令があったときに、そ
のデジタル変換データを出力する。このデータは演算制
御部7に採り込まれる。The electronic balance 2 measures the load on the sample plate 2a-to, and outputs the digitally converted data when there is a command from the sequence control summer cola 6. This data is taken into the arithmetic control section 7.
演算制御部7はマイクロコンピュータによって構成され
、プログラムの実行や各周辺機器の制御を行うCPU7
a、後述するプログラムが書き込まれたROM7b、電
子天びん2がらのデータや。The arithmetic control unit 7 is composed of a microcomputer, and includes a CPU 7 that executes programs and controls each peripheral device.
a, ROM 7b in which a program to be described later is written, and data from the electronic balance 2.
CPU7aによる各種演算結果等を記憶するエリアを備
えたRAM7C,および外部機器との接続の為の入出カ
ポ−]・74等を備え、これらは互いにパスラインによ
って接続されている。It is provided with a RAM 7C having an area for storing various calculation results etc. by the CPU 7a, and an input/output capo 74 for connection with external equipment, which are connected to each other by a pass line.
演算制御部7の入出カポ−)7dには、電子天びん2の
ほかに、比重算出結果を表示する表示器8、同しくその
結果を印字するプリンタ9.およびシーケンスコントロ
ーラ6が接続されている。In addition to the electronic balance 2, the input/output capo 7d of the arithmetic control unit 7 includes a display 8 for displaying the specific gravity calculation results, and a printer 9 for printing the results. and a sequence controller 6 are connected.
シーケンスコントローラ6はこの演算制御部7に支配さ
れており、ROM7bに書き込まれたプログラムに従っ
て、各部への指令信号を発生するよう構成されている。The sequence controller 6 is controlled by the arithmetic control section 7, and is configured to generate command signals to each section according to a program written in the ROM 7b.
第2図はROM7bに書き込まれたプログラムを示すフ
ローチャー]・で、以下、この図を参照しつつ本発明実
施例の動作および作用を説明する。FIG. 2 is a flowchart showing a program written in the ROM 7b. The operation and effect of the embodiment of the present invention will be described below with reference to this diagram.
まず、水温や気温等の測定条件等をインプットして初期
化すると、電子天びん2の零調整が行ゎれる。その浅、
試料を試料皿2a上に載せると、以下、自動的に測定動
作が実行される。第1に、試料の空中M量の測定データ
Wを採り込み、RAM7Cに格納する。次に、水槽4を
」二昇させて試料を水没させ、第1回目の水中M量デー
タW/1を採取した後、水槽4を下降させて試料を再び
空気中に出す。この動作を3回繰り返し、水中重量デー
タW’ l 、W’ 2.W’ 3を得る。そして、こ
のうち最新のデータw′3が、その直前のデータW/2
よりも重い値である場合に限り、次のステップへと進む
。W/3がw′2よりも軽い場合は、もう一度水槽4を
下降、」二昇させて、更に水中重量データW′4を採取
し、同様な比較を行う。最新の水中重量データW′カが
その直前の水中重量データw’L−,よりも重いという
ことば、W′L−1の採取時に比べて気泡が取り除かれ
ているということであって、その確認の後、次いで最新
の3個のデー’) WA 、 W7; −1、Wi、
−2の値が、あらかじめ設定されたばらつきの範囲内に
収まっているか否かを判別する。もし、範囲内に収まっ
ていなければ、未だ気泡付着に」、る影響の虞れがある
として、更にもう一度水槽4を士降、ト昇させて新たな
データを採取する。最新の311?ilのデータ間のば
らつきが所定の範囲内に収まっているならば、もはや気
を包付着の影響が無いということであって、この場合に
限り、そのうりの最新のデータW′Lを水中重量測定値
として採用し、そのW′えと、空気中重量データWとか
ら、試料の比重を算出する。なお、このとき、従来通り
水や空気の比重、水面−1−昇分等に関する補正が行わ
れることは云うまでもない。このようにして算出された
比重は、表示器8に表示される。同時に、水槽4が原位
置にまで下降され、こごで試料を除去することによって
測定を終了する。First, when initialization is performed by inputting measurement conditions such as water temperature and air temperature, the zero adjustment of the electronic balance 2 is performed. That shallow,
When the sample is placed on the sample plate 2a, measurement operations are automatically executed thereafter. First, measurement data W of the amount of M in the air of the sample is captured and stored in the RAM 7C. Next, the water tank 4 is raised twice to submerge the sample in water, and after collecting the first water M amount data W/1, the water tank 4 is lowered to expose the sample to the air again. Repeat this operation three times to obtain underwater weight data W' l , W' 2. Get W' 3. Among these, the latest data w'3 is the immediately preceding data W/2.
Proceed to the next step only if the value is heavier than . If W/3 is lighter than w'2, the water tank 4 is lowered and then raised again, further underwater weight data W'4 is collected, and a similar comparison is made. The fact that the latest underwater weight data W' is heavier than the immediately previous underwater weight data W'L-, means that air bubbles have been removed compared to when W'L-1 was collected, and it is necessary to confirm this. After that, then the latest three days') WA, W7; -1, Wi,
It is determined whether the value of -2 falls within a preset variation range. If it is not within the range, there is still a risk of air bubbles adhering, so the tank 4 is lowered and raised again to collect new data. The latest 311? If the variation between the data of il is within a predetermined range, it means that there is no longer any influence of air envelopment, and only in this case, the latest data W'L can be calculated as the underwater weight. The specific gravity of the sample is calculated from the measured value W' and the in-air weight data W. It goes without saying that at this time, corrections regarding the specific gravity of water and air, the water surface minus 1 minus the rise, etc. are performed as usual. The specific gravity calculated in this way is displayed on the display 8. At the same time, the water tank 4 is lowered to its original position, and the sample is removed with a shovel to complete the measurement.
なお、ばらつき有無の判別に供するデータ個数は3個に
限られることは云うまでもムく、史に、以上の実施例で
は、試料を水没さ−1るごとに水中重量を測定し、気泡
(スj着の影響が無くな−、たことを確認して、最新の
データを水中重量測定値として採用したが、この確認は
必ずしも必要ではなく、あらかしめ設定された所定回数
だけ水槽4を無条件にトW下降させ、その後の水中小量
データを測定値として採用するよう構成してもよい。It goes without saying that the number of data items used to determine the presence or absence of variation is limited to three, and in the above embodiment, the weight of the sample in water is measured each time the sample is submerged in water, and air bubbles ( After confirming that there was no effect of water damage, the latest data was adopted as the underwater weight measurement value.However, this confirmation is not necessarily necessary, and the aquarium 4 may be removed for a predetermined number of times. It may be configured such that the water is lowered according to the condition and the subsequent small amount of underwater data is adopted as the measured value.
くリノ果〉
以1−説明したように、本発明によれば、水中重量の測
定前に、自動的に試料を空気中と水中との間で所定回数
往復させるよう構成したから、従来のように、測定動作
の途中において別設された水槽内に試料を浸す等の手作
業を必要とゼす、気泡付着を防止して高精度の水中電量
を測定することができる。その結果、常に能率、1く信
頼性の晶い比重測定イ1へを得ることができ・も。As described above, according to the present invention, the sample is automatically moved back and forth between the air and the water a predetermined number of times before measuring the weight in water, so it is possible to In addition, it is possible to measure the coulometric value in water with high precision by preventing the adhesion of air bubbles and eliminating the need for manual work such as dipping the sample into a separate water tank during the measurement operation. As a result, you can always obtain efficient, reliable and crystalline specific gravity measurements.
第1図は本発明実施例の構成[ン1 第21ソjはその
ROM7bに書き込まれたプロ7シ゛うムを示J−2+
’1−チャートである。
1 架台 2 電子天び4−5
2a 試料朋 、3 ?に槽1:駅!号装置4 水槽
fi:’、i−’)、・♂ン11−4−−一7
/iii算制御部FIG. 1 shows the configuration of the embodiment of the present invention [1] The 21st program shows the program 7 written in the ROM 7b.
'1-Chart. 1 mount 2 electronic balance 4-5 2a sample , 3 ? Tank 1: Station! Equipment No. 4 Water tank fi:', i-'), ♂n 11-4--17
/iii arithmetic control section
Claims (2)
水槽装置を有し、試料の空気中および水中の重量測定値
から、当該試料の比重を求める装置において、上記水槽
装置を、試料を空気中および水中の間で所定回数往復さ
せるよう構成するとともに、その往復の後、上記水中重
量の測定値を得るよう構成したことを特徴とする固体比
重測定装置。(1) In a device that has a water tank device for submerging a sample suspended in a weight measuring device, and determines the specific gravity of the sample from the measured weight of the sample in air and water, the water tank device is used to submerge the sample. What is claimed is: 1. A solid specific gravity measuring device, characterized in that it is configured to reciprocate between air and water a predetermined number of times, and to obtain a measured value of the weight in water after the reciprocation.
るとともに、その測定値が、あらかじめ設定された回数
連続して所定のばらつきの範囲内に収まるまで、上記往
復を継続するよう構成したことを特徴とする特許請求の
範囲第1項記載の固体比重測定装置。(2) The underwater weight of the sample is measured each time during the above reciprocation, and the above reciprocation is continued until the measured value falls within a predetermined variation range for a preset number of consecutive times. A solid specific gravity measuring device according to claim 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60115892A JPH0774775B2 (en) | 1985-05-29 | 1985-05-29 | Solid specific gravity measuring device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60115892A JPH0774775B2 (en) | 1985-05-29 | 1985-05-29 | Solid specific gravity measuring device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61272630A true JPS61272630A (en) | 1986-12-02 |
JPH0774775B2 JPH0774775B2 (en) | 1995-08-09 |
Family
ID=14673778
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP60115892A Expired - Lifetime JPH0774775B2 (en) | 1985-05-29 | 1985-05-29 | Solid specific gravity measuring device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0774775B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0862738A1 (en) * | 1995-11-26 | 1998-09-09 | PMI-Accurate Measurements Ltd. | Measuring the gold ratio of cast gold |
JP2008180533A (en) * | 2007-01-23 | 2008-08-07 | Shimadzu Corp | Specific gravity measuring kit and specific gravity measuring device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5821124A (en) * | 1981-07-29 | 1983-02-07 | Sumitomo Rubber Ind Ltd | Measuring device for volume and specific gravity of rubber test piece or the like |
JPS5990031A (en) * | 1982-11-15 | 1984-05-24 | Sumitomo Rubber Ind Ltd | Apparatus for measuring weight |
-
1985
- 1985-05-29 JP JP60115892A patent/JPH0774775B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5821124A (en) * | 1981-07-29 | 1983-02-07 | Sumitomo Rubber Ind Ltd | Measuring device for volume and specific gravity of rubber test piece or the like |
JPS5990031A (en) * | 1982-11-15 | 1984-05-24 | Sumitomo Rubber Ind Ltd | Apparatus for measuring weight |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0862738A1 (en) * | 1995-11-26 | 1998-09-09 | PMI-Accurate Measurements Ltd. | Measuring the gold ratio of cast gold |
EP0862738A4 (en) * | 1995-11-26 | 2000-10-18 | Pmi Accurate Measurements Ltd | Measuring the gold ratio of cast gold |
JP2008180533A (en) * | 2007-01-23 | 2008-08-07 | Shimadzu Corp | Specific gravity measuring kit and specific gravity measuring device |
Also Published As
Publication number | Publication date |
---|---|
JPH0774775B2 (en) | 1995-08-09 |
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