JP2008180533A - Specific gravity measuring kit and specific gravity measuring device - Google Patents

Specific gravity measuring kit and specific gravity measuring device Download PDF

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JP2008180533A
JP2008180533A JP2007012590A JP2007012590A JP2008180533A JP 2008180533 A JP2008180533 A JP 2008180533A JP 2007012590 A JP2007012590 A JP 2007012590A JP 2007012590 A JP2007012590 A JP 2007012590A JP 2008180533 A JP2008180533 A JP 2008180533A
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specific gravity
dish
liquid
solid sample
sample
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Junji Iizuka
淳史 飯塚
Akira Hizume
亮 日詰
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Shimadzu Corp
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Shimadzu Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a specific gravity measuring kit and a specific gravity measuring device capable of reducing an influence of a measuring error resulting from adhering bubbles and water drops caused by being put into/out of liquid in a sample receiver. <P>SOLUTION: In the sample receiver 12 wherein an aerial dish 12a for placing thereon a solid sample S whose weight in the air is to be measured is placed on an upper position, and an in-liquid dish 12b for placing thereon the solid sample S whose weight in liquid L the specific gravity of which is known in a water tank 11 is to be measured is placed on a lower position, and both dishes are connected by wires 12c, 12d, titanium oxide coating is applied to each surface of the wires 12c, 12d and the in-liquid dish 12b, to thereby add a photocatalyst function thereto. In measurement, the wires 12c, 12d and the in-liquid dish 12b are used by being irradiated with an ultraviolet ray. Hereby, super-hydrophilicity is added to the sample receiver 12, to thereby reduce adhesion of bubbles or water drops. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、空気中における重量と比重既知の液体中の重量を測定して、固体試料の比重を測定する比重測定キットおよび比重測定装置に関する。   The present invention relates to a specific gravity measuring kit and a specific gravity measuring device for measuring the specific gravity of a solid sample by measuring the weight in air and the weight in a known liquid.

アルキメデスの原理を利用して固体試料の比重を求める場合、従来、図５に示すような比重測定装置４が用いられている。この比重測定装置４は、空気中での重量を測定するために固体試料Ｓを載置する空中皿４１と液体中での重量を測定する液中皿４２とをワイヤ４３で結合した試料受け４４と、この試料受け４４を支持する皿受けフレーム４５と、比重既知の液体Ｌを収容した水槽４６と、この水槽４６を載せる水槽受台４７を備え、前記皿受けフレーム４５を電子天びん４８に載置して、試料受け４４に載置した固体試料Ｓの空気中および液体中での重量を測定するようにしたものである。   When obtaining the specific gravity of a solid sample by utilizing Archimedes' principle, a specific gravity measuring device 4 as shown in FIG. 5 has been conventionally used. The specific gravity measuring device 4 includes a sample receiver 44 in which an air dish 41 on which a solid sample S is placed and a liquid dish 42 for measuring the weight in a liquid are connected by a wire 43 in order to measure the weight in air. A dish receiving frame 45 for supporting the sample receiver 44, a water tank 46 containing a liquid L with a known specific gravity, and a water tank receiving base 47 on which the water tank 46 is placed. The dish receiving frame 45 is mounted on an electronic balance 48. The weight of the solid sample S placed on the sample receiver 44 in the air and in the liquid is measured.

前記空中皿４１に固体試料Ｓを載せた場合の空気中での固体試料Ｓの重量Ｗａと液中皿４２に固体試料Ｓを載せ代えた場合の液体Ｌ中での固体試料Ｓの重量Ｗｌを電子天びん４８で測定し、液体Ｌの比重ρｌを入力することにより、固体試料Ｓの空気中での比重ρを、（１）式によって算出して表示している（特許文献１参照）。
ρ＝Ｗａρｌ／（Ｗａ−Ｗｌ） （１） The weight W a of the solid sample S in the air when the solid sample S is placed on the aerial dish 41 and the weight W of the solid sample S in the liquid L when the solid sample S is placed on the submerged dish 42. By measuring l with the electronic balance 48 and inputting the specific gravity ρ l of the liquid L, the specific gravity ρ in the air of the solid sample S is calculated and displayed by the equation (1) (see Patent Document 1). ).
ρ = W a ρ l / (W a −W l ) (1)

上記の比重測定装置４で固体試料Ｓの比重を高精度で測定する必要がある場合、通常電子天びん４８として分析用の電子天びん等の高精度電子天びんが用いられている。このような高精度電子天びんを使用して比重測定を行う場合、固体試料Ｓを空中皿４１から液中皿４２に移し替えるために試料受け４４を上下に移動させる際、液中皿４２やワイヤ４３に気泡や水滴が付着して測定精度を低下させる。例えば１ｍｍ３の気泡が１個付着している場合、液体Ｌ中での浮力は約１ｍｇ大きく測定されるので、電子天びん４８では下２桁の測定誤差が生じ、有効数字も減少する。 When it is necessary to measure the specific gravity of the solid sample S with high accuracy using the specific gravity measuring device 4 described above, a high-precision electronic balance such as an analytical electronic balance is usually used as the electronic balance 48. When performing a specific gravity measurement using such a high-precision electronic balance, when moving the sample receiver 44 up and down in order to transfer the solid sample S from the aerial dish 41 to the submerged dish 42, the submerged dish 42 and the wire are moved. Bubbles and water droplets adhere to 43 and decrease the measurement accuracy. For example, when one bubble of 1 mm 3 is attached, the buoyancy in the liquid L is measured to be about 1 mg larger, so that the measurement error of the last two digits occurs in the electronic balance 48, and the effective number also decreases.

前記液中皿４２への気泡の付着を低減するため図６の液中皿４２の平面図に示すように円周上に多数の長孔４２ａを貫通させて気泡を生じにくくしたり、液体Ｌ中に浸漬する液中皿４２およびワイヤ４３など液体Ｌ中に浸漬する部分を洗浄して油分などの汚れを取り除いたり、あるいは液体Ｌ中に界面活性剤を投入して親水性を高めて濡れ性を良くし水滴の付着を無くしたり、前記ワイヤ４３をできるだけ細くして浮力の影響を受けなくするような方法が採られている。しかし、ワイヤ４３をあまり細くすると試料受け４４の形状の保持が難しくなり、測定のしやすさと耐荷重の面から直径０．５ｍｍより細くすることは難しく、通常直径０．５ｍｍ程度のＳＵＳ３０４製ワイヤが使用されている。
特開２００５−２７４３９２号公報 In order to reduce the adhesion of bubbles to the submerged dish 42, as shown in the plan view of the submerged dish 42 in FIG. The parts immersed in the liquid L, such as the submerged dish 42 and the wire 43, are washed away to remove dirt such as oil, or a surfactant is added to the liquid L to increase hydrophilicity and wettability. A method is adopted in which adhesion of water droplets is eliminated and the wire 43 is made as thin as possible so as not to be affected by buoyancy. However, if the wire 43 is made too thin, it is difficult to maintain the shape of the sample receiver 44, and it is difficult to make it thinner than a diameter of 0.5 mm in terms of ease of measurement and load resistance, and a SUS304 wire having a diameter of about 0.5 mm is usually difficult. Is used.
JP 2005-274392 A

従来の比重測定装置４は上記のように構成されているが、前記液中皿４２やワイヤ４３の洗浄だけでは、液体Ｌに対して十分な濡れ性（親水性）が確保できず、気泡や水滴の付着を十分減らすことができないという問題がある。また、濡れ性を向上するための界面活性剤（例えば洗剤のようなもの）の必要量は、ワイヤ４３や液中皿４２の表面状態により異なるのでユーザが適量を決めることは面倒で難しく、適量を判断するためには、界面活性剤の量を少しずつ増やしていきながら測定結果を検討する必要があるという問題がある。あまり多量に界面活性剤を入れると泡立して測定精度に悪影響を与える。
本発明は、このような事情に鑑みてなされたものであり、液中皿および吊下用のワイヤへの気泡や水滴の付着を排除して、高精度で比重測定が可能な比重測定キットおよび比重測定装置を提供することを目的とする。 Although the conventional specific gravity measuring device 4 is configured as described above, it is not possible to ensure sufficient wettability (hydrophilicity) with respect to the liquid L only by washing the submerged dish 42 and the wire 43, and there are no There is a problem that adhesion of water droplets cannot be reduced sufficiently. Further, since the necessary amount of a surfactant (such as a detergent) for improving the wettability varies depending on the surface condition of the wire 43 and the submerged dish 42, it is troublesome and difficult for the user to determine the appropriate amount. Therefore, there is a problem that it is necessary to examine the measurement result while gradually increasing the amount of the surfactant. If too much surfactant is added, it will foam and adversely affect measurement accuracy.
The present invention has been made in view of such circumstances, and a specific gravity measurement kit capable of measuring specific gravity with high accuracy by eliminating the attachment of bubbles and water droplets to the submerged dish and the suspension wire, and An object is to provide a specific gravity measuring device.

本発明の比重測定キットは、固体試料を空気中で載置する空中皿を上位に、水槽内の比重既知の液体中で載置する液中皿を下位にしてワイヤで接続した試料受けと、前記空中皿を取外し自在に載着する上位部位と電子天びんの荷重検出軸に載着する下部部位を有する皿受けフレームを備えた比重測定キットにおいて、液体中に浸漬させる前記ワイヤおよび液中皿は、その表面に超親水性のコーティングが施されているものである。
また、本発明の比重測定装置は、固体試料を空気中で載置する空中皿を上位に、水槽内の比重既知の液体中で載置する液中皿を下位にしてワイヤで接続した試料受けと、前記空中皿を取外し自在に載着する上位部位と電子天びんの荷重検出軸に載着する下部部位を有する皿受けフレームを備えるとともに、液体中に浸漬させる前記ワイヤおよび液中皿は、その表面に超親水性のコーティングが施されている比重測定キットと、風袋重量、固体試料の空気中重量、液体中重量を選択して測定する測定選択手段と、各測定値を記憶する記憶手段と、各測定値から固体試料の比重値を算出表示する算出表示手段とからなるものである。 The specific gravity measurement kit of the present invention is a sample receiver in which an aerial dish on which a solid sample is placed in the air is placed on the upper side, a submerged dish placed in a liquid with a known specific gravity in the water tank is placed on the lower side, and a wire is connected. In the specific gravity measurement kit comprising a pan receiving frame having an upper part on which the air pan is detachably mounted and a lower part mounted on the load detection shaft of the electronic balance, the wire and the submerged dish immersed in the liquid are: The surface is provided with a super-hydrophilic coating.
In addition, the specific gravity measuring apparatus of the present invention is a sample receiver in which an air pan on which a solid sample is placed in the air is placed on the upper side and a liquid dish placed in a liquid of known specific gravity in the water tank is placed on the lower side and connected by a wire. And a dish receiving frame having an upper part for detachably mounting the air dish and a lower part for mounting on a load detection shaft of the electronic balance, and the wire and the liquid dish immersed in the liquid are: Specific gravity measurement kit having a superhydrophilic coating on the surface, measurement selection means for selecting and measuring the tare weight, the weight of the solid sample in the air and the weight in the liquid, and storage means for storing each measurement value And a calculation display means for calculating and displaying the specific gravity value of the solid sample from each measurement value.

本発明による比重測定キットおよび比重測定装置は、表面に酸化チタンをコーティングした液中皿とこれを空中皿から吊り下げるワイヤを用いてこれに蛍光を照射することによりその表面が超親水性になるため、気泡や水滴の付着が無く安定した測定ができ、測定精度が向上する。   The specific gravity measurement kit and the specific gravity measurement device according to the present invention make the surface superhydrophilic by irradiating the surface with a submerged dish coated with titanium oxide and a wire that suspends it from the aerial dish. Therefore, there is no adhesion of bubbles or water droplets, stable measurement can be performed, and measurement accuracy is improved.

本発明の比重測定キットの実施例を図面を参照しながら説明する。図１は比重測定キットを構成する構成部材を組み立てた状態を示す斜視図である。本比重測定キット１は比重既知の液体（通常水を使用する）Ｌを収容する水槽１１と、図２（Ａ）に示すような液体Ｌに沈む固体試料を測定する場合に用いる試料受け１２または図２（Ｂ）に示すような液体Ｌに浮く固体試料を測定する場合に用いる試料受け１３と、前記試料受け１２または１３を取外し自在に係着する皿受けフレーム１４と、前記水槽１１を支持する水槽受台１５と、液体Ｌの温度を測定する温度計１６と、この温度計１６を水槽１１内に固着するホルダー１７から構成されている。   Embodiments of the specific gravity measuring kit of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a state where components constituting the specific gravity measurement kit are assembled. The specific gravity measurement kit 1 includes a water tank 11 that contains a liquid L of known specific gravity (usually using water) and a sample receiver 12 that is used for measuring a solid sample that sinks in the liquid L as shown in FIG. A sample receiver 13 used when measuring a solid sample floating in the liquid L as shown in FIG. 2 (B), a pan receiver frame 14 on which the sample receiver 12 or 13 is detachably attached, and the water tank 11 are supported. A water tank cradle 15, a thermometer 16 for measuring the temperature of the liquid L, and a holder 17 for fixing the thermometer 16 in the water tank 11.

前記試料受け１２は固体試料Ｓを載置して空気中でその重量を測定する空中皿１２ａと、円周方向に沿って打ち抜かれた複数の長孔を有して下方に湾曲し、固体試料Ｓを載置し液体Ｌ中でその重量を測定する液中皿１２ｂと、この液中皿１２ｂを空中皿１２ａから吊り下げるために空中皿１２ａの裏面中心部に固定するとともに下部を開いて液中皿１２ｂに固定している２本のワイヤ１２ｃ、１２ｄと、この上側部分を通して密着させるための筒体１２ｅから構成されている。また、前記試料受け１３は前記試料受け１２の液中皿１２ｂの代わりに上方に湾曲した液中皿１３ａを取り付けたものである。前記ワイヤ１２ｃ、１２ｄは、直径０．５ｍｍ程度のＳＵＳ３０４ワイヤを使用し、空中皿１２ａ、液中皿１２ｂ、１３ａにはＳＵＳ３０４が用いられ、これらの表面にはアナターゼ型酸化チタン、ブルッカイト型酸化チタン、ルチル型酸化チタンなどの酸化チタン（ＴｉＯ２）類や酸化錫や酸化亜鉛などの超親水性物質含有処理液がコーティングされている。 The sample receiver 12 has an aerial dish 12a on which a solid sample S is placed and measures its weight in the air, and has a plurality of long holes punched out in the circumferential direction, and is bent downward. A submerged dish 12b on which S is placed and its weight is measured in the liquid L, and in order to suspend the submerged dish 12b from the aerial dish 12a, the bottom is opened and the lower part is opened to fix the liquid. It consists of two wires 12c and 12d fixed to the inner tray 12b and a cylindrical body 12e to be brought into close contact through the upper portion. The sample receiver 13 is provided with a submerged dish 13a that is curved upward instead of the submerged dish 12b of the sample receiver 12. As the wires 12c and 12d, SUS304 wires having a diameter of about 0.5 mm are used, and SUS304 is used for the air dish 12a and the liquid dishes 12b and 13a. Anatase type titanium oxide and brookite type titanium oxide are used on these surfaces. Further, titanium oxide (TiO 2 ) such as rutile-type titanium oxide and a superhydrophilic substance-containing treatment liquid such as tin oxide and zinc oxide are coated.

前記ワイヤ１２ｃ、１２ｄおよび液中皿１２ｂ、１３ａは、その表面にブラックライトや蛍光ランプ（図示省略）などからの４００ｎｍ以下の紫外光線を照射することにより、光触媒作用が機能してその表面が超親水性となり液体Ｌとの濡れが良好化し、固体試料Ｓを空気中から液体Ｌ中へ移し替える際の上下移動に伴い発生していた気泡や水滴の付着が排除される。   The wires 12c and 12d and the submerged dishes 12b and 13a are irradiated with ultraviolet light of 400 nm or less from a black light, a fluorescent lamp (not shown) or the like on their surfaces, so that the photocatalytic function functions and the surfaces are superfluous. It becomes hydrophilic and the wettability with the liquid L is improved, and the adhesion of bubbles and water droplets that have occurred along with the vertical movement when the solid sample S is transferred from the air to the liquid L is eliminated.

前記比重測定キット１を図１に示すような分析用の電子天びん２と組み合わせて比重測定装置を構成し、液体Ｌに沈む固体試料Ｓの比重測定を行う場合の操作手順を以下に説明する。
（１）図３(Ａ)に示すように電子天びん２から測定皿２１、皿受け２２、対流防止リング２３を取り除く。
（２）図３（Ｂ）に示すように電子天びん２の皿受け軸２４に比重測定キット１の皿受けフレーム１４を載置する。
（３）図３（Ｃ）に示すように水槽受台１５を皿受けフレーム１４に接触しないように配設する。
（４）水槽受台１５の上に液体Ｌを入れた水槽１１を載せる。
（５）皿受けフレーム１４に空中皿１２ａを係着させる。このとき、前記ワイヤ１２ｃ、１２ｄの途中までが水槽１１の液体Ｌ中に沈む。試料受け１２のワイヤ１２ｃ、１２ｄから下部をバックライトまたは蛍光ランプで紫外光を照射する。
（６）この状態で風袋重量Ｗ０と固体試料Ｓを空中皿１２ａに載置した時の重量Ｗａを測定する。
（７）皿受けフレーム１４から空中皿１２ａを外して持ち上げ、液中皿１２ｂを液体Ｌから引き上げ、固体試料Ｓを液中皿１２ｂに載置した後、空中皿１２ａを再度皿受けフレーム１４に係着し、固体試料Ｓを液体Ｌ中に沈める。
（８）固体試料Ｓの液中重量Ｗｌを測定する。
これより固体試料Ｓの比重ρは次式（２）より求められる。
ρ＝（Ｗａ−Ｗ０）ρｌ／（Ｗａ−Ｗｌ） （２）
ここで、ρｌは、液体Ｌの比重値で、温度計１６で測定された温度により補正される値を使用する。 An operation procedure in the case where the specific gravity measurement device 1 is configured by combining the specific gravity measurement kit 1 with an analytical electronic balance 2 as shown in FIG. 1 and the specific gravity of the solid sample S submerged in the liquid L is measured will be described below.
(1) As shown in FIG. 3A, the measuring pan 21, the pan receiver 22, and the convection prevention ring 23 are removed from the electronic balance 2.
(2) Place the pan support frame 14 of the specific gravity measurement kit 1 on the pan support shaft 24 of the electronic balance 2 as shown in FIG.
(3) As shown in FIG. 3C, the water tank cradle 15 is disposed so as not to contact the dish receiving frame 14.
(4) The water tank 11 containing the liquid L is placed on the water tank cradle 15.
(5) The aerial dish 12 a is engaged with the dish receiving frame 14. At this time, the middle of the wires 12c and 12d sinks in the liquid L in the water tank 11. The lower part of the sample receiver 12 is irradiated with ultraviolet light by a backlight or a fluorescent lamp from the wires 12c and 12d.
(6) In this state, the tare weight W0 and the weight Wa when the solid sample S is placed on the air dish 12a are measured.
(7) Remove and lift the aerial dish 12a from the dish receiving frame 14, lift the submerged dish 12b from the liquid L, place the solid sample S on the submerged dish 12b, and then place the aerial dish 12a on the dish receiving frame 14 again. The solid sample S is submerged in the liquid L.
(8) The in-liquid weight Wl of the solid sample S is measured.
Accordingly, the specific gravity ρ of the solid sample S is obtained from the following equation (2).
ρ = (Wa−W0) ρ 1 / (Wa−W1) (2)
Here, ρ l is a specific gravity value of the liquid L, and a value corrected by the temperature measured by the thermometer 16 is used.

図４は本発明の比重測定装置に使用される電子天びん３の概略構成を示すブロック図である。荷重検出部３１は、例えば電磁力平衡方型の電子天びん機構を主体とするもので、前記皿受けフレーム１４を載置する皿受け台３１ａ上の荷重に対応した電気信号を出力する。その出力はＡ−Ｄ変換器３２によってディジタル化された後、所定の微小時間間隔で制御部３３に採りこまれる。   FIG. 4 is a block diagram showing a schematic configuration of the electronic balance 3 used in the specific gravity measuring apparatus of the present invention. The load detector 31 is mainly composed of, for example, an electromagnetic balance type electronic balance mechanism, and outputs an electrical signal corresponding to the load on the pan support 31a on which the pan support frame 14 is placed. The output is digitized by the A-D converter 32 and then taken into the control unit 33 at predetermined minute time intervals.

制御部３３はマイクロコンピュータを主体として構成されており、ＣＰＵ３４、前記（１）式の演算や入力平均化などの処理を行うプログラムが書き込まれたＲＯＭ３５、ディジタル変換された荷重データが書き込まれるＲＡＭ３６、および外部機器との接続のための入出力インターフェース３７等を備えている。この制御部３３には、上述のＡ−Ｄ変換器３２のほか、固体試料の比重値を表示するための表示器３８と、固体試料の空気中重量、液体中重量、風袋重量の測定項目を選択指令する選択スイッチ３９Ａ、各測定値の測定記憶を指令する測定記憶スイッチ３９Ｂおよびこれらの測定値から比重値を算出して表示することを指令する表示スイッチ３９Ｃが設けられた入力部３９が接続されている。   The control unit 33 is mainly composed of a microcomputer, and includes a CPU 34, a ROM 35 in which a program for performing processing such as calculation and input averaging of the equation (1) is written, a RAM 36 in which digitally converted load data is written, And an input / output interface 37 for connection with an external device. In addition to the above-described A-D converter 32, the control unit 33 includes a display 38 for displaying the specific gravity value of the solid sample, and measurement items for the weight of the solid sample in the air, the weight of the liquid, and the tare weight. An input unit 39 provided with a selection switch 39A for instructing selection, a measurement memory switch 39B for instructing measurement storage of each measurement value, and a display switch 39C for instructing to calculate and display a specific gravity value from these measurement values is connected. Has been.

本比重測定装置は、前記比重測定キット１を使用して比重測定を行う手順と同様の手順で比重測定を行うが、前記電子天びん３を備えているので風袋重量、固体試料の空気中重量および液体中重量測定時に、前記選択スイッチ３９Ａをその測定項目に合わせその都度測定記憶スイッチ３９Ｂを押し、液中重量を測定後表示スイッチ３９Ｃを押すことにより、比重値が表示器３８に表示される。
本発明の比重測定キット１および比重測定装置の構成は上記実施例に限定されるものでなく、例えば液中皿１２ｂ、１３ａを２本のワイヤ１２ｃ、１２ｄで吊り下げているが１本または３本以上のワイヤで吊り下げるようにしてもよい。 This specific gravity measuring device performs specific gravity measurement in the same procedure as the specific gravity measurement procedure using the specific gravity measurement kit 1, but includes the electronic balance 3, so that the tare weight, the weight of the solid sample in the air, and At the time of measuring the weight in the liquid, the specific gravity value is displayed on the display 38 by setting the selection switch 39A to the measurement item and pressing the measurement storage switch 39B each time and pressing the display switch 39C after measuring the weight in the liquid.
The configurations of the specific gravity measuring kit 1 and the specific gravity measuring device of the present invention are not limited to the above-described embodiments. For example, the submerged dishes 12b and 13a are suspended by two wires 12c and 12d, but one or three are used. You may make it hang with more than a wire.

本発明は、空気中における重量と比重既知の液体中の重量を測定して、固体試料の比重を測定する比重測定キットおよび比重測定装置に関する。   The present invention relates to a specific gravity measuring kit and a specific gravity measuring device for measuring the specific gravity of a solid sample by measuring the weight in air and the weight in a known liquid.

本発明実施例の比重測定キット１の組立状態を示す斜視図である。It is a perspective view which shows the assembly state of the specific gravity measurement kit 1 of an Example of this invention. 実施例に係わる試料受け１２の側面図（Ａ）と試料受け１３の側面図（Ｂ）である。It is the side view (A) of the sample receptacle 12 concerning an Example, and the side view (B) of the sample receptacle 13. FIG. 比重測定キット１の電子天びん２への据付工程図（Ａ）、（Ｂ）、（Ｃ）である。FIG. 4 is a process diagram (A), (B), and (C) for installing the specific gravity measurement kit 1 on the electronic balance 2. 本発明実施例の比重測定装置の電子天びん３の概略構成を示すブロック図である。It is a block diagram which shows schematic structure of the electronic balance 3 of the specific gravity measuring apparatus of this invention Example. 従来の比重測定装置の一部断面で示す側面図である。It is a side view shown in the partial cross section of the conventional specific gravity measuring apparatus. 液中皿の平面図である。It is a top view of a submerged dish.

符号の説明Explanation of symbols

１ 比重測定キット
２、３、４８ 電子天びん
４ 比重測定装置
１１、４６ 水槽
１２、１３、４４ 試料受け
１２ａ、４１ 空中皿
１２ｂ、１３ａ、４２ 液中皿
１２ｃ、１２ｄ、４３ ワイヤ
１２ｅ 筒体
１４、４５ 皿受けフレーム
１５、４７ 水槽受台
１６ 温度計
１７ ホルダー
２１ 測定皿
２２ 皿受け
２３ 対流防止リング
２４ 皿受け軸
３１ 荷重検出部
３１ａ 皿受け台
３２ Ａ−Ｄ変換器
３３ 制御部
３４ ＣＰＵ
３５ ＲＯＭ
３６ ＲＡＭ
３７ 入出力インターフェース
３８ 表示器
３９ 入力部
３９Ａ 選択スイッチ
３９Ｂ 測定記憶スイッチ
３９Ｃ 表示スイッチ
４２ａ 長孔
Ｌ 液体
Ｓ 固体試料 DESCRIPTION OF SYMBOLS 1 Specific gravity measurement kit 2, 3, 48 Electronic balance 4 Specific gravity measuring apparatus 11, 46 Water tank 12, 13, 44 Sample receptacle 12a, 41 Air dish 12b, 13a, 42 Liquid dish 12c, 12d, 43 Wire 12e Cylindrical body 14, 45 Dish receiving frame 15, 47 Water tank receiving table 16 Thermometer 17 Holder 21 Measuring plate 22 Dish receiving plate 23 Convection prevention ring 24 Dish receiving shaft 31 Load detecting unit 31a Dish receiving table 32 AD converter 33 Control unit 34 CPU
35 ROM
36 RAM
37 I / O interface 38 Display 39 Input section 39A Selection switch 39B Measurement storage switch 39C Display switch 42a Long hole L Liquid S Solid sample

Claims (2)

固体試料を空気中で載置する空中皿を上位に水槽内の比重既知の液体中で載置する液中皿を下位にしてワイヤで接続した試料受けと、前記空中皿を取外し自在に載着する上位部位と電子天びんの荷重検出軸に載着する下位部位を有する皿受けフレームを備えた比重測定キットにおいて、液体中に浸漬させる前記ワイヤおよび液中皿は、その表面に超親水性のコーティングが施されていることを特徴とする比重測定キット。 A sample receiver connected with a wire with a submerged dish placed in a liquid of known specific gravity in a water tank placed on the upper side with an air dish on which a solid sample is placed in the air, and the aerial dish are detachably mounted In a specific gravity measurement kit having a pan receiving frame having a lower part mounted on the load detection axis of the electronic balance, the wire immersed in the liquid and the submerged dish are coated with a super-hydrophilic surface. A specific gravity measurement kit characterized by that. 固体試料を空気中で載置する空中皿を上位に、水槽内の比重既知の液体中で載置する液中皿を下位にしてワイヤで接続した試料受けと、前記空中皿を取外し自在に載着する上位部位と電子天びんの荷重検出軸に載着する下位部位を有する皿受けフレームを備えるとともに、液体中に浸漬させる前記ワイヤおよび液中皿は、その表面に超親水性のコーティングが施されている比重測定キットと、風袋重量、固体試料の空気中重量、液体中重量を選択して測定する測定選択手段と、各測定値を記憶する記憶手段と、各測定値から固体試料の比重値を算出表示する算出表示手段とからなることを特徴とする比重測定装置。 The sample tray connected with a wire with the aerial dish for placing the solid sample in the air placed on the upper side and the submerged dish placed in the liquid of known specific gravity in the water tank placed on the lower side, and the aerial dish can be removed and placed freely In addition to the dish receiving frame having the upper part to be worn and the lower part to be placed on the load detection shaft of the electronic balance, the wire and the liquid dish to be immersed in the liquid have a super hydrophilic coating on the surface thereof. Specific gravity measurement kit, measurement selection means for selecting and measuring tare weight, weight in air of solid sample, weight in liquid, storage means for storing each measurement value, and specific gravity value of solid sample from each measurement value A specific gravity measuring device comprising: calculation display means for calculating and displaying
JP2007012590A 2007-01-23 2007-01-23 Specific gravity measuring kit and specific gravity measuring device Pending JP2008180533A (en)

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CN105115847A (en) * 2015-10-12 2015-12-02 吉林大学 Rapid determination device adopting microwave buoyancy method and rapid determination method adopting microwave buoyancy method
CN112394005A (en) * 2020-11-09 2021-02-23 中国空间技术研究院 Device and method suitable for testing density of solid and liquid
CN117054617A (en) * 2023-10-12 2023-11-14 西南石油大学 High-temperature high-pressure acid rock reaction rate measuring device
CN117054617B (en) * 2023-10-12 2023-12-12 西南石油大学 High-temperature high-pressure acid rock reaction rate measuring device

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