JPH0224336B2 - - Google Patents
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- Publication number
- JPH0224336B2 JPH0224336B2 JP56116259A JP11625981A JPH0224336B2 JP H0224336 B2 JPH0224336 B2 JP H0224336B2 JP 56116259 A JP56116259 A JP 56116259A JP 11625981 A JP11625981 A JP 11625981A JP H0224336 B2 JPH0224336 B2 JP H0224336B2
- Authority
- JP
- Japan
- Prior art keywords
- refractive index
- light
- cell
- sample
- optical rotation
- 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 - Lifetime
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、糖分分析計に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a sugar analyzer.
例えば蔗糖大根における糖分含有率を測定する
等試料中の糖分を分析するのに、糖度と固形分濃
度（ブリツクス）及びこれら糖度と固形分濃度か
ら求められる純糖率の測定が必要であり、そし
て、旋光度によつて糖度を、又、屈折率によつて
固形分濃度をそれぞれ求め得ることが知られてい
る。
For example, in order to analyze the sugar content in a sample, such as measuring the sugar content in sucrose radish, it is necessary to measure the sugar content, solid content concentration (brix), and the pure sugar rate determined from these sugar content and solid content concentration. It is known that the sugar content can be determined by the optical rotation, and the solid content concentration can be determined by the refractive index.
ところが、屈折率測定のために試料セルにおい
ては、試料流入空間と基準物質との間に光の入射
方向に対して傾斜した境界面が必要であるのに対
し、旋光度測定のための試料セルにおいては、前
記境界面は不要であつた。 However, in the sample cell for refractive index measurement, a boundary surface between the sample inflow space and the reference material that is inclined with respect to the direction of light incidence is required, whereas in the sample cell for optical rotation measurement In this case, the boundary surface was not necessary.
そこで、従来においては、各別に専用の試料セ
ルを準備し、それぞれの試料セルに試料を流して
旋光度及び屈折率を測定していたが、試料セルの
設置場所の相違、測定時間のズレ、両セルへの試
料流入タイミングのズレ等によつて測定時の試料
温度が変化して、糖度及び固形分濃度が変化し測
定精度が低いものとなつていた。 Conventionally, a dedicated sample cell was prepared for each sample cell, and the optical rotation and refractive index were measured by flowing the sample into each sample cell. Due to a difference in the timing of sample inflow into both cells, the sample temperature during measurement changes, resulting in changes in sugar content and solid content concentration, resulting in low measurement accuracy.
本発明は、上述の事柄に留意してなされたもの
で、その目的とするところは、糖度及び固形分濃
度を同一条件下の試料を対象として測定し、糖分
分析における測定精度を工場できるようにすると
共に、糖度、固形分濃度及び純糖率を容易に知る
ことができる実用上極めて便利な糖分分析計を提
供することにある。 The present invention has been made with the above-mentioned considerations in mind, and its purpose is to measure the sugar content and solid content concentration of samples under the same conditions, and to improve the measurement accuracy in sugar content analysis at a factory. In addition, it is an object of the present invention to provide a sugar content analyzer that is extremely convenient in practice and can easily determine sugar content, solid content concentration, and pure sugar percentage.
上述の目的を達成するため、本発明に係る糖分
分析計は、屈折率が知られた屈折率測定用基準物
質によつて、旋光度測定用セル部と屈折率測定用
セル部とを一体的に形成し、かつ、前記屈折率測
定用セル部内の光の透過側に、前記屈折率測定用
基準物質と同一物質よりなり所定角度だけ光の透
過側に傾斜した境界面を光の入射側に備えたプリ
ズム部を、前記屈折率測定用セル部と一体的に形
成した試料セルを設け、光源と前記旋光度測定用
セル部との間に、前記光源からの光を直線偏光す
る偏光子とその偏光面を回転させるフアラデーセ
ルを設け、前記旋光度測定用セル部を透過した光
を偏光する前記偏光子に対し偏光面が90゜異なる
検光子を設け、この検光子からの光を受ける検出
器を設け、この検出器からの信号を前記フアラデ
ーセルに入力して前記検出器の受光量が零或いは
最小になるように前記フアラデーセルにより偏光
面を回転し、その回転角度に基づいて試料の旋光
度を測定するように構成し、他方、前記屈折率測
定用セル部を透過した光の位置を検出する検出器
を設けてその検出位置に基づいて試料の屈折率を
測定するように構成し、かつ、測定された旋光度
及び屈折率に基づいて試料の糖度、固形分濃度並
びに純糖率を算出する演算器、及び、算出された
糖度、固形分濃度並びに純糖率を表示する表示装
置を設けている。
In order to achieve the above object, the sugar analyzer according to the present invention integrates a cell part for measuring optical rotation and a cell part for measuring refractive index using a reference material for measuring refractive index with a known refractive index. and a boundary surface made of the same material as the reference material for refractive index measurement and inclined at a predetermined angle toward the light transmission side on the light transmission side in the refractive index measurement cell section. A sample cell having a prism section formed integrally with the refractive index measurement cell section is provided, and a polarizer for linearly polarizing the light from the light source is provided between the light source and the optical rotation measurement cell section. A Faraday cell that rotates the plane of polarization is provided, an analyzer whose polarization plane differs by 90 degrees from the polarizer that polarizes the light transmitted through the optical rotation measurement cell section, and a detector that receives the light from the analyzer. A signal from this detector is input to the Faraday cell, the plane of polarization is rotated by the Faraday cell so that the amount of light received by the detector becomes zero or minimum, and the optical rotation of the sample is determined based on the rotation angle. a detector configured to measure the refractive index of the sample, and further configured to include a detector that detects the position of the light transmitted through the refractive index measurement cell section, and to measure the refractive index of the sample based on the detected position, and Provided with a calculator that calculates the sugar content, solid content concentration, and pure sugar percentage of the sample based on the measured optical rotation and refractive index, and a display device that displays the calculated sugar content, solid content concentration, and pure sugar percentage. There is.
以下、本発明の一実施例を、図面を参照しなが
ら説明する。
An embodiment of the present invention will be described below with reference to the drawings.
第１図において、１はヘリウム−ネオンレーザ
等の光源、２はこの光源１からの光を、その一部
を直線的に透過させると共に残部を反射により直
角方向に向かわせるハーフミラー、３はこのハー
フミラー２によつて反射された光を前記透過光と
平行な方向に向かうように反射する反射鏡、４は
前記透過光及び反射光を共に透過させる試料セル
（図示してないが、試料の流入口及び排出口を備
えている）４である。 In Fig. 1, 1 is a light source such as a helium-neon laser, 2 is a half mirror that transmits part of the light from this light source 1 in a straight line, and reflects the rest to direct it in a right-angled direction, and 3 is this light source. A reflecting mirror 4 reflects the light reflected by the half mirror 2 in a direction parallel to the transmitted light; 4 is a sample cell (not shown) that transmits both the transmitted light and the reflected light; (equipped with an inlet and an outlet) 4.
そして、ハーフミラー２及び試料セル４を透過
した光に対して旋光度を測定するように構成さ
れ、他方、反射鏡３で反射された後試料セル４を
透過した光に対して示差屈折率を測定するように
構成され、糖度、固形分濃度及び純糖率を測定す
る糖分分析計が構成されている。 It is configured to measure the optical rotation of the light that has passed through the half mirror 2 and the sample cell 4, and to measure the differential refractive index of the light that has been reflected by the reflector 3 and then passed through the sample cell 4. A sugar content analyzer is configured to measure sugar content, solid content concentration, and pure sugar content.
即ち、旋光度を測定するに、ハーフミラー２と
試料セル４との間に特定の光のみを透過させて完
全な直線偏光にするための偏光子５及び直線偏光
を強制的に振動させて偏光面を回転させるフアラ
デーセル６が設けられ、一方、試料セル４の後方
に、偏光子５に対して偏光面を90゜傾けた検光子
７が設けられると共に、その後方に例えば電子増
倍管等の検出器８が設けられ、この検出器８によ
る受光に伴いその受光信号を増幅器９により増幅
してフアラデーセル６に入力し、このフアラデー
セル６に、検出器８からの信号が最小（基本波成
分において零）になるように電流を流し、この電
流と偏光面回転角度とが比例することを利用し
て、電流量に基づいて旋光度が測定されるのであ
る。 That is, to measure the optical rotation, only a specific light is transmitted between the half mirror 2 and the sample cell 4, and the polarizer 5 is used to forcibly vibrate the linearly polarized light to make it completely linearly polarized light. A Faraday cell 6 whose surface is rotated is provided, and an analyzer 7 whose plane of polarization is tilted at 90 degrees with respect to the polarizer 5 is provided behind the sample cell 4, and an analyzer 7, such as an electron multiplier, is provided behind it. A detector 8 is provided, and as the light is received by the detector 8, the received light signal is amplified by an amplifier 9 and inputted to the Faraday cell 6. ), and by utilizing the fact that this current is proportional to the rotation angle of the plane of polarization, the optical rotation is measured based on the amount of current.
又、屈折率を測定するに、試料セル４を透過し
た光を受けるように、半導体素子１０の両端に電
極１１，１１を設けてなる半導体位置検出器１２
が設けられ、半導体素子１０上の一個所に集中し
て投射される光スポツト電極１１，１１との距離
に応じて按分される光電流を、増幅器１３，１３
によつてそれぞれ増幅した後演算器１４に入力
し、その電流差に基づいて電極１１，１１と光ス
ポツトとの距離を検出し、この検出された距離
と、予め設定された試料セル４と半導体素子１０
との相対関係に基づいて屈折角度が求められ、こ
の角度に基づいて屈折率が測定されるのである。 In order to measure the refractive index, a semiconductor position detector 12 is used, which has electrodes 11, 11 provided at both ends of the semiconductor element 10 so as to receive the light transmitted through the sample cell 4.
Amplifiers 13 and 13 transmit a photocurrent that is distributed proportionally according to the distance from the light spot electrodes 11 and 11, which are concentrated and projected onto one spot on the semiconductor element 10.
The distance between the electrodes 11, 11 and the light spot is detected based on the current difference, and the distance between the detected distance and the preset sample cell 4 and semiconductor element 10
The refraction angle is determined based on the relative relationship with the refractive index, and the refractive index is measured based on this angle.
ところで、前記光源１は特定波長（例えば6328
オングストローム）の光線を発するものであり、
又、ハーフミラー２や反射鏡３を設けずに、それ
ぞれ専用に一個ずつ光源を設けてもよい。 By the way, the light source 1 has a specific wavelength (for example, 6328
It emits light rays of angstroms,
Furthermore, without providing the half mirror 2 or the reflecting mirror 3, one light source may be provided for each of them.
前記ハーフミラー２の後方に凸レンズ１５が設
けられ、ハーフミラー２を透過した光を太いビー
ムに拡大し、試料セル４透過に際し、気泡や浮遊
物等の影響により光が散乱されて偏光性が乱され
ないように構成してある。 A convex lens 15 is provided behind the half mirror 2 to expand the light that has passed through the half mirror 2 into a thick beam, and when it passes through the sample cell 4, the light is scattered due to the effects of air bubbles, floating objects, etc., and its polarization is disturbed. It is configured so that it does not occur.
又、前記検光子７の後方にも凸レンズ１６が設
けてあつて、太いビームに拡大された光を細いビ
ームに復帰するように構成してある。 A convex lens 16 is also provided behind the analyzer 7, and is configured to return the light expanded into a thick beam to a narrow beam.
１７は検出器８の前に設けたピンホールを示
し、散乱光を除去するためのものである。 Reference numeral 17 indicates a pinhole provided in front of the detector 8 for removing scattered light.
前記試料セル４は、第２図に示すように、ガラ
スや透明な樹脂等予め屈折率が知られているもの
を基準物質Ａとして、この屈折率測定用基準物質
Ａにより、横断面視における外周形状を矩形に形
成すると共に内部に試料流入空間Ｓを形成し、か
つ、この試料流入空間Ｓに臨む内周面のうち、上
方側において、光の入射方向に対して直交する互
いに対向した面F1，F2を備えさせて旋光度測定
用セル部１８が形成され、他方、下方側におい
て、光の入射方向に対して直交する面F2を光の
入射側に、そして、所定角度（例えば45゜）だけ
傾斜した境界面Ｆを透過側にそれぞれ備えさせて
屈折率測定用セル部１９が、旋光度測定用セル部
１８と一体的に形成されている。 As shown in FIG. 2, the sample cell 4 uses a material whose refractive index is known in advance, such as glass or transparent resin, as a reference material A, and uses this reference material A for measuring the refractive index to measure the outer periphery in a cross-sectional view. Surfaces F that are rectangular in shape, form a sample inflow space S therein, and face each other perpendicularly to the light incident direction on the upper side of the inner circumferential surface facing the sample inflow space S. 1 and F 2 to form an optical rotation measurement cell part 18. On the other hand, on the lower side, a plane F 2 perpendicular to the light incident direction is on the light incident side, and a predetermined angle (e.g. The cell section 19 for measuring the refractive index is formed integrally with the cell section 18 for measuring the optical rotation angle, and the cell section 19 for measuring the refractive index is provided with a boundary surface F inclined at an angle of 45 degrees on the transmission side.
即ち、屈折率測定用セル部１９内の光の透過側
に、境界面Ｆによつてプリズム部が、屈折率測定
用基準物質Ａと同一物質で屈折率測定用セル部１
９と一体的に形成されている。 That is, on the light transmission side in the refractive index measurement cell section 19, the prism section is formed of the same material as the refractive index measurement reference material A by the boundary surface F.
It is formed integrally with 9.
このように試料セル４は形成され、かつ、その
一端部に設けた流入口（図外）から試料流入空間
Ｓに流入される同一条件下の試料に対し、旋光度
及び屈折率測定のための両方の光を同時に透過さ
せられるように構成されている。 The sample cell 4 is formed in this way, and is used to measure the optical rotation and refractive index of a sample under the same conditions that flows into the sample inflow space S from the inlet (not shown) provided at one end of the sample cell 4. It is configured to allow both types of light to pass through at the same time.
尚、試料セル４としては、例えば旋光度測定用
セル部１８と屈折率測定用セル部１９との間に位
置させて、試料流入空間Ｓ内に仕切板を設けて流
入試料の整流化を図つたり、試料セル４の中央に
旋光度測定用セル部１８を形成し、その上下両端
側に屈折率測定用セル部１９を形成する等種々の
変形が可能である。 The sample cell 4 may be located, for example, between the optical rotation measurement cell section 18 and the refractive index measurement cell section 19, and a partition plate may be provided in the sample inflow space S to rectify the flow of the inflowing sample. Various modifications are possible, such as forming the optical rotation measuring cell part 18 in the center of the sample cell 4 and forming the refractive index measuring cell parts 19 on both upper and lower ends thereof.
前記演算器１４はマイクロコンピユータで構成
され、この演算器１４に、検出器８からの信号に
基づくフアラデーセル６の電流変化量も入力さ
れ、旋光度及び屈折率が測定されると共に、これ
ら旋光度及び屈折率に温度の補正を加え、屈折率
に基づいて固形分濃度（重量％）が算出され、か
つ、屈折率によつて算出される比重と旋光度に基
づいて糖度（重量％）が算出され、それぞれ固形
分濃度と、糖度から純糖率（％）（＝（糖度／固形
分濃度）×100）が算出されるように構成してあ
る。 The arithmetic unit 14 is composed of a microcomputer, and the amount of current change in the Faraday cell 6 based on the signal from the detector 8 is also input to the arithmetic unit 14, and the optical rotation and refractive index are measured. By adding temperature correction to the refractive index, the solid content concentration (wt%) is calculated based on the refractive index, and the sugar content (wt%) is calculated based on the specific gravity and optical rotation calculated by the refractive index. , are configured so that the pure sugar rate (%) (=(sugar content/solid content concentration)×100) is calculated from the solid content concentration and sugar content, respectively.
前記表示装置は、演算器１４からの信号が入力
されることにより、糖度、固形分濃度及び純糖率
をそれぞれデイジタル的に表示するように構成さ
れている。尚、この表示装置２０は例えばメータ
等によつてアナログ表示するものであつてもよ
い。 The display device is configured to digitally display the sugar content, solid content concentration, and pure sugar percentage by receiving signals from the calculator 14. Note that this display device 20 may be one that provides analog display using, for example, a meter.
そして、試料としては、例えば蔗糖大根を例に
とれば、製品製糖液、製糖工程液、蔗糖大根搾汁
液等を用いることができるが、その他、砂糖キビ
等糖分を含む各種のものを用いることができる。
尚、上記蔗糖大根搾汁液を用いる場合、気泡や浮
遊物に起因して誤差が出やすいため、遠心分離器
等により予め濾過処理するのが好ましい。 As a sample, for example, taking sucrose radish, product sugar solution, sugar production process solution, sucrose radish juice, etc. can be used, but in addition, various substances containing sugar such as sugar cane can be used. can.
In addition, when using the above-mentioned sucrose radish juice, it is preferable to filter it in advance using a centrifuge or the like, since errors are likely to occur due to air bubbles and suspended matter.
上記実施例では、示差屈折率を測定するのに、
半導体位置検出器１２を用いているが、例えば試
料セル４と受光部との間に、試料セル４を透過し
た光を受けるように、回転自在な反射鏡を設け、
この反射鏡の回転によつて反射光の方向を変更
し、反射光が受光部に到達する状態における反射
鏡の回転角度を検出し、これに基づいて示差屈折
率を測定したり、或いは、全反射を利用して測定
する等、各種の位置検出器１２を用いることがで
きる。 In the above embodiment, to measure the differential refractive index,
Although the semiconductor position detector 12 is used, for example, a rotatable reflecting mirror is provided between the sample cell 4 and the light receiving section so as to receive the light transmitted through the sample cell 4.
The direction of the reflected light is changed by rotating this reflecting mirror, and the rotation angle of the reflecting mirror is detected when the reflected light reaches the light receiving part, and the differential refractive index is measured based on this, or the total Various position detectors 12 can be used, such as those that measure using reflection.
又、検出器８として光電子増倍管以外の各種の
検出器を用いてもよいことは云うまでもない。 Furthermore, it goes without saying that various types of detectors other than a photomultiplier tube may be used as the detector 8.
以上説明したように、本発明に係る糖分分析計
は、試料セルに、旋光度及び屈折率をそれぞれ測
定するためのセル部を一体的に形成すると共に、
前記試料セルに対して、光源、旋光度測定用の偏
光子、フアラデーセル、検光子、検出器、屈折率
測定用の位置検出器を設けているので、試料セル
内に流入した試料に対し、同一条件下で同時的に
旋光度及び屈折率、即ち、糖度及び固形分濃度を
測定することができ、相対温度差に起因する測定
精度の低下を回避することができて、糖分分析に
おける大幅に向上させるに至つた。
As explained above, the sugar analyzer according to the present invention has cell parts for measuring the optical rotation and the refractive index integrally formed in the sample cell, and
The sample cell is equipped with a light source, a polarizer for optical rotation measurement, a Faraday cell, an analyzer, a detector, and a position detector for refractive index measurement. Optical rotation and refractive index, that is, sugar content and solid content concentration, can be measured simultaneously under different conditions, and the reduction in measurement accuracy caused by relative temperature differences can be avoided, greatly improving sugar analysis. I ended up letting it happen.
そして、前記試料セルの屈折率測定用セル部の
プリズム部は、試料セルを形成した屈折率測定用
基準物質と同一の屈折率測定用基準物質で、屈折
率測定用セル部と一体的に形成してあるので、屈
折率測定用セル部に入射した光を、前記プリズム
部でその屈折率に対応して屈折させて検出器に入
射させることができ、屈折率の検出精度をより向
上させることができると共に、前記プリズム部
は、所定角度だけ光の透過側に傾斜した境界面を
光の入射側に備えてなるものであるから、プリズ
ム部を透過した光を検光子側に近づきすぎること
なく、位置検出器に入射させることができる。 The prism portion of the refractive index measurement cell portion of the sample cell is formed integrally with the refractive index measurement cell portion using the same refractive index measurement reference material that formed the sample cell. Therefore, the light incident on the refractive index measuring cell section can be refracted by the prism section in accordance with the refractive index and enter the detector, thereby further improving the detection accuracy of the refractive index. In addition, since the prism section is provided with a boundary surface on the light incident side that is inclined at a predetermined angle toward the light transmission side, the light transmitted through the prism section can be transmitted without getting too close to the analyzer side. , can be made incident on a position detector.
その上、測定された旋光度及び屈折率に基づい
て、糖度、固形分濃度及び純糖率を算出すると共
にそれらを表示装置によつて表示させるから、別
途換算せずに済むのみならず、糖度、固形分濃度
及び純糖率を極めて容易に知ることができ、例え
ば糖分取引市場での糖分分析結果が信頼性の高い
値として迅速に判る等使用上の効果が極めて大き
い。 Furthermore, based on the measured optical rotation and refractive index, the sugar content, solid content concentration, and pure sugar percentage are calculated and displayed on the display device, which not only eliminates the need for separate conversion, but also , the solid content concentration and the pure sugar percentage can be known very easily, and the effects in use are extremely large, such as, for example, the sugar content analysis results in the sugar trading market can be quickly determined as highly reliable values.
第１図は本発明に係る糖分分析計の一例を示す
フローシート、第２図は試料セルの一例を示す斜
視図である。
１…光源、４…試料セル、５…偏光子、６…フ
アラデーセル、７…検光子、８…検出器、１２…
位置検出器、１４…演算器、１８…旋光度測定用
セル部、１９…屈折率測定用セル部、２０…表示
装置、Ａ…屈折率測定用基準物質、Ｆ…境界面。
FIG. 1 is a flow sheet showing an example of a sugar analyzer according to the present invention, and FIG. 2 is a perspective view showing an example of a sample cell. DESCRIPTION OF SYMBOLS 1...Light source, 4...Sample cell, 5...Polarizer, 6...Faraday cell, 7...Analyzer, 8...Detector, 12...
Position detector, 14... Arithmetic unit, 18... Cell section for optical rotation measurement, 19... Cell section for refractive index measurement, 20... Display device, A... Reference material for refractive index measurement, F... Boundary surface.
Claims (1)
つて、旋光度測定用セル部と屈折率測定用セル部
とを一体的に形成し、かつ、前記屈折率測定用セ
ル部内の光の透過側に、前記屈折率測定用基準物
質と同一物質よりなり所定角度だけ光の透過側に
傾斜した境界面を光の入射側に備えたプリズム部
を、前記屈折率測定用セル部と一体的に形成した
試料セルを設け、光源と前記旋光度測定用セル部
との間に、前記光源からの光を直線偏光する偏光
子とその偏光面を回転させるフアラデーセルを設
け、前記旋光度測定用セル部を透過した光を偏光
する前記偏光子に対し偏光面が90゜異なる検光子
を設け、この検光子からの光を受ける検出器を設
け、この検出器からの信号を前記フアラデーセル
に入力して前記検出器の受光量が零或いは最小に
なるように前記フアラデーセルにより偏光面を回
転し、その回転角度に基づいて試料の旋光度を測
定するように構成し、他方、前記屈折率測定用セ
ル部を透過した光の位置を検出する検出器を設け
てその検出位置に基づいて試料の屈折率を測定す
るように構成し、かつ、測定された旋光度及び屈
折率に基づいて試料の糖度、固形分濃度並びに純
糖率を算出する演算器、及び、算出された糖度、
固形分濃度並びに純糖率を表示する表示装置を設
けてあることを特徴とする糖分分析計。1. A cell part for measuring optical rotation and a cell part for measuring refractive index are integrally formed using a reference substance for measuring refractive index with a known refractive index, and the light in the cell part for measuring refractive index is A prism part, which is made of the same material as the reference material for refractive index measurement and has a boundary surface on the light incident side that is inclined toward the light transmission side by a predetermined angle, is integrated with the refractive index measurement cell part on the transmission side. A polarizer that linearly polarizes the light from the light source and a Faraday cell that rotates the plane of polarization are provided between the light source and the optical rotation measurement cell part, and An analyzer is provided with a plane of polarization different by 90 degrees from the polarizer that polarizes the light transmitted through the analyzer, a detector is provided to receive the light from the analyzer, and a signal from this detector is input to the Faraday cell. The plane of polarization is rotated by the Faraday cell so that the amount of light received by the detector becomes zero or minimum, and the optical rotation of the sample is measured based on the rotation angle, and the refractive index measurement cell section A detector is provided to detect the position of the transmitted light, and the refractive index of the sample is measured based on the detected position, and the sugar content and solid state of the sample are determined based on the measured optical rotation and refractive index. A computing device that calculates the minute concentration and pure sugar rate, and the calculated sugar content,
A sugar content analyzer characterized by being equipped with a display device that displays solid content concentration and pure sugar percentage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11625981A JPS5817342A (en) | 1981-07-23 | 1981-07-23 | Analyzer for amount of sugar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11625981A JPS5817342A (en) | 1981-07-23 | 1981-07-23 | Analyzer for amount of sugar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5817342A JPS5817342A (en) | 1983-02-01 |
| JPH0224336B2 true JPH0224336B2 (en) | 1990-05-29 |
Family
ID=14682669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11625981A Granted JPS5817342A (en) | 1981-07-23 | 1981-07-23 | Analyzer for amount of sugar |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5817342A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4523143B2 (en) * | 2000-11-10 | 2010-08-11 | シチズンホールディングス株式会社 | Concentration measuring device and sugar content measuring device |
| JP6435532B2 (en) | 2014-06-02 | 2018-12-12 | 株式会社アタゴ | Optical rotation and refractive index measuring device |
| CN104316467B (en) * | 2014-11-05 | 2017-01-25 | 上海仪电物理光学仪器有限公司 | Optical system for refraction and optical rotation integrated instrument |
| JP6600842B2 (en) * | 2018-10-16 | 2019-11-06 | 株式会社アタゴ | Optical rotation and refractive index measuring device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56117151A (en) * | 1980-02-21 | 1981-09-14 | Hokuren Nogyo Kyodo Kumiai Rengokai | Measuring apparatus of content and purity of cane sugar |
-
1981
- 1981-07-23 JP JP11625981A patent/JPS5817342A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5817342A (en) | 1983-02-01 |
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