JPH04286939A - Method and apparatus for continuously measuring moisture - Google Patents
Method and apparatus for continuously measuring moistureInfo
- Publication number
- JPH04286939A JPH04286939A JP3074414A JP7441491A JPH04286939A JP H04286939 A JPH04286939 A JP H04286939A JP 3074414 A JP3074414 A JP 3074414A JP 7441491 A JP7441491 A JP 7441491A JP H04286939 A JPH04286939 A JP H04286939A
- Authority
- JP
- Japan
- Prior art keywords
- moisture
- measuring
- measured
- continuously
- light
- 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
- 238000000034 method Methods 0.000 title claims description 12
- 238000010521 absorption reaction Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000013307 optical fiber Substances 0.000 claims description 6
- 230000000052 comparative effect Effects 0.000 claims description 3
- 235000020993 ground meat Nutrition 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 25
- 239000000523 sample Substances 0.000 description 10
- 238000001125 extrusion Methods 0.000 description 8
- 241000251468 Actinopterygii Species 0.000 description 6
- 235000019465 surimi Nutrition 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229940023462 paste product Drugs 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は含水物、例えば魚肉練製
品等、水分を含んだ食品等の材料の含有水分量を連続的
に測定する方法および装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for continuously measuring the water content of water-containing materials, such as fish paste products and other water-containing foods.
【０００２】0002
【従来の技術】一般に含水物、例えば魚肉練製品等の水
分が含まれている食品はその含有水分量によって品質が
異なり、この含有水分量を測定することにより前記魚肉
練製品としての製品の均一化等の品質管理を図ることが
求められている。[Prior Art] Generally, the quality of water-containing foods, such as fish paste products, varies depending on the amount of water contained in the food, and by measuring this water content, the quality of the fish paste product can be uniformly determined. There is a need for quality control such as oxidation.
【０００３】従来、魚肉練製品等を製造する過程におけ
る水分測定装置は、混合及び混練されたすり身等の測定
物から材料をカップ等で採取し、いわゆる赤外線水分計
等で水分の測定を行っていた。[0003] Conventionally, moisture measuring devices used in the process of producing fish paste products, etc. have used a cup or the like to collect material from a mixed and kneaded sample such as surimi, and then measured the moisture using a so-called infrared moisture meter. Ta.
【０００４】0004
【発明が解決しようとする課題】しかしながら、上述し
た従来の測定では、サンプル材料を手動で作業員が採取
して水分測定を行っているため、非常に煩雑であり、ま
たこの採取および測定に要する時間が多大であるという
欠点がある。さらに、この従来の測定方法では、人手を
介しているため、工場等における連続的な処理中での測
定、即ち、オンライン中の測定は不可能であった。[Problems to be Solved by the Invention] However, in the conventional measurement described above, a worker manually collects the sample material and measures the moisture content, which is very complicated and requires a lot of time for this collection and measurement. The disadvantage is that it takes a lot of time. Furthermore, since this conventional measurement method requires manual intervention, measurement during continuous processing in a factory or the like, ie, measurement while online, is impossible.
【０００５】そこで本発明は、上記問題点を解消するた
めになされたものであって、含水測定物の含有水分量を
精度良くかつ正確に連続的に測定することのできる水分
を測定する方法および装置を提供することを目的として
いる。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and provides a method for measuring moisture that can continuously and accurately measure the moisture content of a water-containing object. The purpose is to provide equipment.
【０００６】[0006]
【課題を解決するための手段】次に、上記の目的を達成
するための手段を、実施例に対応する図１及び図４を参
照して説明する。この発明の測定物の水分量の測定方法
は、測定物を連続して定量的に供給し、吸収波長を１．
２０〜１．２５μｍ若しくは０．９８〜１．０５μｍと
し、かつ比較波長を前記吸収波長よりも短波長とした光
を用いて、前記定量的に供給される測定物の水分を連続
的に測定することを特徴としている。また、この発明に
よる測定物の水分量を測定する装置は、測定物を連続し
て定量的に供給する定量供給装置と、吸収波長を１．２
０〜１．２５μｍ若しくは０．９８〜１．０５μｍとし
、かつ比較波長を前記吸収波長よりも短波長とした光を
用いて前記定量供給装置により供給される測定物の含有
水分量を測定するセンサと、を具備したことを特徴とし
ている。さらに、上記センサは光ファイバを具備しても
よい。Means for Solving the Problems Next, means for achieving the above object will be explained with reference to FIGS. 1 and 4, which correspond to embodiments. The method for measuring the moisture content of a sample according to the present invention involves continuously and quantitatively supplying the sample and adjusting the absorption wavelength to 1.
Using light having a wavelength of 20 to 1.25 μm or 0.98 to 1.05 μm and a comparison wavelength shorter than the absorption wavelength, the water content of the quantitatively supplied sample is continuously measured. It is characterized by Further, the device for measuring the moisture content of a sample according to the present invention includes a quantitative supply device that continuously and quantitatively supplies the sample, and an absorption wavelength of 1.2.
A sensor that measures the water content of the sample supplied by the quantitative supply device using light having a wavelength of 0 to 1.25 μm or 0.98 to 1.05 μm and a comparison wavelength shorter than the absorption wavelength. It is characterized by having the following. Additionally, the sensor may include an optical fiber.
【０００７】[0007]
【作用】混合及び混練されたすり身などの測定物６は、
定量供給装置４に投入される。定量供給装置４は、投入
された測定物６を定量供給装置４の出口方向に連続して
押し出す。この定量供給装置４により連続して押し出さ
れた測定物６は、この装置の出口側においてセンサ５の
吸収波長１．２０〜１．２５μｍ若しくは０．９８〜１
．０５μｍとし、かつ比較波長を吸収波長よりも短波長
とした光が投射され含有水分量が測定される。[Operation] The measurement object 6 such as mixed and kneaded surimi is
It is put into the quantitative supply device 4. The quantitative supply device 4 continuously pushes out the input object 6 toward the exit of the quantitative supply device 4 . The measurement object 6 continuously pushed out by this quantitative supply device 4 has an absorption wavelength of 1.20 to 1.25 μm or 0.98 to 1
．． 05 μm and a comparative wavelength shorter than the absorption wavelength is projected, and the water content is measured.
【０００８】[0008]
【実施例】まず、本発明の測定物の水分を測定する装置
の一実施例を、図面に基づいて説明する。この実施例の
水分測定装置は、図１に示すように、定量供給装置４と
、ガイドパイプ３、センサ５で大略構成されている。
定量供給装置４は、材料押し出し装置１と定量供給ポン
プ２とで構成されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an embodiment of the apparatus for measuring the moisture content of an object to be measured according to the present invention will be described with reference to the drawings. The moisture measuring device of this embodiment, as shown in FIG. 1, is roughly composed of a quantitative supply device 4, a guide pipe 3, and a sensor 5. The quantitative feeding device 4 is composed of a material extrusion device 1 and a quantitative feeding pump 2.
【０００９】まず、定量供給装置４を構成する材料押し
出し装置１は、上方が開口した筒状に形成されたホッパ
１ａを有しており、その底部には、図２および図３に示
すように、１対のスクリュー１２，１２がその軸線を互
いに略平行として配設されている。これらスクリュー１
２，１２は各一方の軸端がモータなどの駆動装置に連動
連結されている。この材料押し出し装置１は、図示しな
い製造ラインの前工程で混合及び混練された魚肉練製品
などの材料である測定物６がホッパ１ａに供給され、こ
の測定物６を一対のスクリュー１２，１２によって脱気
して密度を一定に圧縮し徐々に定量供給ポンプ２側へ送
る。First, the material extrusion device 1 constituting the quantitative feeding device 4 has a hopper 1a formed in a cylindrical shape with an open upper part, and a hopper 1a is provided at the bottom of the hopper 1a as shown in FIGS. 2 and 3. , a pair of screws 12, 12 are arranged with their axes substantially parallel to each other. These screws 1
2 and 12, one shaft end of each is operatively connected to a drive device such as a motor. In this material extrusion device 1, a material to be measured 6, which is a material such as a fish paste product that has been mixed and kneaded in a pre-process of a production line (not shown), is supplied to a hopper 1a, and the material to be measured 6 is passed through a pair of screws 12, 12. It is degassed, compressed to a constant density, and gradually sent to the quantitative supply pump 2 side.
【００１０】次に、定量供給ポンプ２は、図３に示すよ
うに内部に互いにかみ合った一対のギヤ２１，２１が内
蔵されたギヤポンプによって構成されている。この定量
供給ポンプ２は、前述した材料押し出し装置１の出口に
連結され、この材料押し出し装置１から送られる測定物
６を、一対のギヤ２１，２１が図示しない駆動源により
回転することで常に定量づつ連続して送りだしガイドパ
イプ３へ供給するようになっている。なお、この定量供
給ポンプ２は一対のギヤで構成されたギヤポンプではな
く、一対のロータリで構成されたロータリポンプで構成
してもよい。Next, the quantitative supply pump 2 is constituted by a gear pump having a pair of gears 21, 21 internally meshed with each other, as shown in FIG. This metering pump 2 is connected to the outlet of the material extrusion device 1 described above, and constantly quantifies the measured object 6 sent from the material extrusion device 1 by rotating a pair of gears 21, 21 by a drive source (not shown). The feed is continuously fed to the guide pipe 3 one by one. Note that the quantitative supply pump 2 may be configured with a rotary pump configured with a pair of rotaries instead of a gear pump configured with a pair of gears.
【００１１】次に、ガイドパイプ３は、円筒形状に形成
されており、図１に示すように前記定量供給ポンプ２に
略水平に連結されている。また、このガイドパイプ３の
出口３ａには上半部が欠切された樋状の受け部７が一体
に連結形成されている。このガイドパイプ３は、前述し
た定量供給ポンプ２より供給される測定物６を連続した
円柱状に形を整えて流出するようになっている。Next, the guide pipe 3 is formed in a cylindrical shape, and is connected approximately horizontally to the metering pump 2 as shown in FIG. Further, a gutter-shaped receiving portion 7 having an upper half cut out is integrally connected to the outlet 3a of the guide pipe 3. This guide pipe 3 is configured to form a continuous cylindrical object 6 to be measured, which is supplied from the above-mentioned quantitative supply pump 2, and then flows out.
【００１２】次に、センサ５は、ガイドパイプ３の中心
軸すなわち測定面６ａと直交する法線方向に対して傾き
をもって（例えば５°）配設され正反射を防止している
。このセンサ５は、いわゆる２色赤外線水分計であり、
すなわち、測定物６の水分の含有量を測定する場合、水
分が吸収する波長を持った光と、水分が吸収しない波長
を持った赤外線光とを各々測定物に投射し、測定物から
拡散反射によって返って来る各波長に対する光のエネル
ギーを測定し、この光のエネルギーの差若しくは比率を
調べることによって水分の含有量の測定を行うものであ
る。Next, the sensor 5 is arranged at an angle (for example, 5°) with respect to the central axis of the guide pipe 3, that is, the normal direction perpendicular to the measurement surface 6a, to prevent specular reflection. This sensor 5 is a so-called two-color infrared moisture meter,
That is, when measuring the moisture content of the measurement object 6, light with a wavelength that the moisture absorbs and infrared light with a wavelength that the moisture does not absorb are respectively projected onto the measurement object, and the diffuse reflection from the measurement object is performed. The water content is measured by measuring the energy of the light for each wavelength that is returned by the detector, and by examining the difference or ratio of the energy of this light.
【００１３】この２つの異なる波長の光とは、本発明で
は１．２０〜１．２５μｍ若しくは０．９８〜１．０５
μｍの吸収波長と、この吸収波長より短波長の比較波長
の２つの相異なる波長を用いる。In the present invention, these two different wavelengths of light are defined as 1.20 to 1.25 μm or 0.98 to 1.05 μm.
Two different wavelengths are used: an absorption wavelength of μm and a comparison wavelength shorter than this absorption wavelength.
【００１４】本実施例では、図示しないが、このセンサ
５に上述した波長の光を出射する光源と、この出射され
た光が測定物に反射した反射光を受光する光電素子とが
内蔵されている。そして、このセンサ５は、図１に示す
ようにガイドパイプ３の上方に所定距離を置いて配設さ
れている。In this embodiment, although not shown, the sensor 5 has a built-in light source that emits light of the above-mentioned wavelength, and a photoelectric element that receives the reflected light of the emitted light reflected by the object to be measured. There is. The sensor 5 is placed above the guide pipe 3 at a predetermined distance, as shown in FIG.
【００１５】次に、以上のように構成された装置による
測定物の水分の測定方法を説明する。まず、製造ライン
の前工程で混合及び混練された魚肉練製品など、例えば
、すり身などの材料である測定物６が材料押し出し装置
１のホッパ１ａに供給される。材料押し出し装置１はス
クリュー１２，１２が常時回転しており、供給された測
定物６を脱気しながら密度を一定に圧縮し、徐々に定量
供給ポンプ２側へ送る。Next, a method for measuring the moisture content of an object to be measured using the apparatus configured as described above will be explained. First, a measurement object 6, which is a material such as fish paste product mixed and kneaded in the previous process of the production line, for example, surimi, is supplied to the hopper 1a of the material extrusion device 1. In the material extrusion device 1, the screws 12, 12 are constantly rotating, and the supplied measurement object 6 is compressed to a constant density while deaerating the object, and is gradually sent to the quantitative feeding pump 2 side.
【００１６】定量供給ポンプ２は、材料押し出し装置１
から送られる測定物６を一対のギヤ２１，２１によって
、ガイドパイプ３へ定量づつ送りだす。測定物６は、ガ
イドパイプ３により、連続した円柱状に形成されてこの
ガイドパイプ３に連結された受け部７上を移動する。[0016] The quantitative supply pump 2 is connected to the material extrusion device 1.
The object to be measured 6 sent from the guide pipe 3 is sent to the guide pipe 3 by a fixed amount by a pair of gears 21, 21. The object to be measured 6 is moved by the guide pipe 3 over a receiving part 7 formed in a continuous column shape and connected to the guide pipe 3 .
【００１７】そして、受け部７上にてセンサ５が測定物
６に比較波長と吸収波長との光を投射し、この光の照射
により測定物６から返ってくる光を検出して、測定物６
中の水分の含有量を測定する。このセンサ５による測定
物６の水分測定は、測定物６が上述した定量供給装置４
により連続してガイドパイプ３へ送られるので、連続的
に測定が行える。なお、測定済の受け部７より落下した
測定物６は、図示しないがコンベア等で、再び製造ライ
ンの次工程へ移動する。Then, the sensor 5 on the receiving part 7 projects light of the comparison wavelength and the absorption wavelength onto the measuring object 6, detects the light returned from the measuring object 6 by irradiation with this light, and detects the light returning from the measuring object 6. 6
Measure the moisture content inside. Moisture measurement of the measurement object 6 by this sensor 5 is performed when the measurement object 6 is connected to the above-mentioned quantitative supply device 4.
Since the sample is continuously sent to the guide pipe 3, measurements can be performed continuously. Note that the measurement object 6 that has fallen from the measuring receiving section 7 is moved again to the next process on the production line by a conveyor or the like (not shown).
【００１８】さて、上述した本発明のすり身の測定物６
の水分の測定方法及び装置による測定結果例を図４に示
す。吸収波長１．２μｍと比較波長１．１μｍ，および
吸収波長１．０μｍと比較波長０．９５μｍをそれぞれ
用い測定した結果である。いずれも、水分率の増加に対
し、電気出力も増加し、高水分測定が十分に可能である
。Now, the above-mentioned surimi measurement object 6 of the present invention
Fig. 4 shows an example of the measurement results using the moisture measurement method and device. These are the results of measurement using an absorption wavelength of 1.2 μm and a comparison wavelength of 1.1 μm, and an absorption wavelength of 1.0 μm and a comparison wavelength of 0.95 μm. In both cases, the electrical output increases as the moisture content increases, making it possible to measure high moisture levels.
【００１９】ところで、上述した実施例では、センサ５
が、図１に示すように測定物に対し所定距離を置いて光
を投射する例について述べたが、図５に示すように、こ
のセンサに光ファイバを具備させ、この光ファイバ５ｃ
をガイドパイプ３に固定させてもよい。この場合、光フ
ァイバ５ｃは、同軸のファイバで構成され、ファイバの
先端がガイドパイプ３の周壁を貫通し、このガイドパイ
プ３内に突出して固定されている。すなわち、ガイドパ
イプ３内にて測定物６の水分を測定する。By the way, in the embodiment described above, the sensor 5
However, as shown in FIG. 1, an example was described in which light is projected onto the object at a predetermined distance, but as shown in FIG. 5, this sensor is equipped with an optical fiber, and this optical fiber 5c
may be fixed to the guide pipe 3. In this case, the optical fiber 5c is composed of a coaxial fiber, and the tip of the fiber penetrates the peripheral wall of the guide pipe 3, projects into the guide pipe 3, and is fixed. That is, the moisture content of the object to be measured 6 is measured within the guide pipe 3.
【００２０】また、本実施例ではガイドパイプ３の出口
に樋形状の受け部７が連結され、その上方に投射型のセ
ンサ５が配設されている構成について述べたが、図６に
示すように断面矩形のノズル１０が連結され、透過型の
センサ５ａ，５ｂにて測定する構成でもよい。この場合
はノズル１０によって測定物６が断面長方形状に成形さ
れ、図７に示すように成形された測定物６が自重で下方
に垂下し、その測定物に、対で構成される透過型のセン
サ５ａ，５ｂを両側面に配設して測定物に光を投射し、
この光の投射に伴う測定物６からの透過光を受光して測
定を行うようになっている。Furthermore, in this embodiment, a configuration has been described in which a gutter-shaped receiving portion 7 is connected to the outlet of the guide pipe 3, and a projection type sensor 5 is disposed above the receiving portion 7, but as shown in FIG. A nozzle 10 having a rectangular cross section may be connected to the nozzle 10, and the measurement may be performed using transmission type sensors 5a and 5b. In this case, the object to be measured 6 is formed into a rectangular cross section by the nozzle 10, and as shown in FIG. Sensors 5a and 5b are arranged on both sides to project light onto the object to be measured,
The measurement is performed by receiving the transmitted light from the measurement object 6 along with the projection of this light.
【００２１】さらに、図８に示すように、透過型のセン
サにそれぞれ光ファイバ５ｄ，５ｅを具備させ、各ファ
イバ５ｄ，５ｅをガイドパイプ３に対向させて固定させ
てもよい。Furthermore, as shown in FIG. 8, each transmission type sensor may be provided with optical fibers 5d and 5e, and each fiber 5d and 5e may be fixed facing the guide pipe 3.
【００２２】なお、上述した実施例は一例であり、本発
明による水分測定方法およびその装置は、種々の高水分
の測定物の水分測定に適用可能である。[0022] The above-mentioned embodiment is merely an example, and the moisture measuring method and device thereof according to the present invention are applicable to measuring the moisture of various high-moisture objects.
【００２３】[0023]
【発明の効果】以上説明したように本発明による水分量
測定方法及びその装置は、装置内に配設された定量供給
装置により連続的に供給され均一な測定物の含有水分量
を、センサにより連続的に精度良く安易に測定すること
ができるので安定した測定物の水分管理ができ、製品の
均一化を図ることができるという品質管理面で優れた効
果がある。Effects of the Invention As explained above, the moisture content measuring method and device according to the present invention are capable of measuring the moisture content of a uniformly measured object by continuously supplying it with a metering supply device installed in the device and using a sensor. Since the measurement can be carried out continuously and easily with high accuracy, it is possible to stably control the moisture content of the sample to be measured, and it has an excellent effect in terms of quality control in that the product can be made uniform.
【図１】本発明による水分測定装置の一実施例を示す概
略側面図FIG. 1 is a schematic side view showing an embodiment of a moisture measuring device according to the present invention.
【図２】同実施例による定量供給装置の概略平面図[Fig. 2] A schematic plan view of the quantitative supply device according to the same embodiment.
【図
３】同実施例による定量供給装置の概略側面図[Fig. 3] A schematic side view of the quantitative supply device according to the same embodiment.
【図４】
同実施例による測定装置の測定結果を示す説明図[Figure 4]
Explanatory diagram showing the measurement results of the measuring device according to the same example
【図５】他の実施例による水分測定装置の概略側面図[Fig. 5] Schematic side view of a moisture measuring device according to another embodiment.
【
図６】他の実施例による水分測定装置の部分拡大斜視図[
FIG. 6: Partially enlarged perspective view of a moisture measuring device according to another embodiment
【図７】他の実施例による水分測定装置の概略側面図[Fig. 7] Schematic side view of a moisture measuring device according to another embodiment.
【
図８】他の実施例による水分測定装置の概略側面図[
FIG. 8: Schematic side view of a moisture measuring device according to another embodiment
Claims (3)
て、前記測定物を連続して定量的に供給し、吸収波長を
１．２０〜１．２５μｍ若しくは０．９８〜１．０５μ
ｍとし、かつ比較波長を前記吸収波長よりも短波長とし
た光を用いて、前記定量的に供給される測定物の水分を
連続的に測定することを特徴とする測定方法。1. A method for measuring the water content of a material to be measured, in which the material to be measured is continuously and quantitatively supplied, and the absorption wavelength is set to 1.20 to 1.25 μm or 0.98 to 1.05 μm.
m, and the water content of the sample to be quantitatively supplied is continuously measured using light having a comparative wavelength shorter than the absorption wavelength.
置において、測定物を連続して定量的に供給する定量供
給装置と、吸収波長を１．２０〜１．２５μｍ若しくは
０．９８〜１．０５μｍとし、かつ比較波長を前記吸収
波長よりも短波長とした光を用いて前記定量供給装置に
より供給される測定物の水分量を測定するセンサと、を
具備したことを特徴とする連続的に水分を測定する装置
。2. A moisture measuring device for measuring the moisture content of a sample, comprising: a quantitative supply device that continuously and quantitatively supplies the sample; and an absorption wavelength of 1.20 to 1.25 μm or 0.98 to 1 μm. .05 μm, and a sensor that measures the moisture content of the sample supplied by the quantitative supply device using light with a comparative wavelength shorter than the absorption wavelength. A device to measure moisture.
とを特徴とする請求項２記載の連続的に水分を測定する
装置。3. The apparatus for continuously measuring moisture according to claim 2, wherein the sensor comprises an optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3074414A JPH04286939A (en) | 1991-03-15 | 1991-03-15 | Method and apparatus for continuously measuring moisture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3074414A JPH04286939A (en) | 1991-03-15 | 1991-03-15 | Method and apparatus for continuously measuring moisture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04286939A true JPH04286939A (en) | 1992-10-12 |
Family
ID=13546516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3074414A Pending JPH04286939A (en) | 1991-03-15 | 1991-03-15 | Method and apparatus for continuously measuring moisture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04286939A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS614947A (en) * | 1984-06-20 | 1986-01-10 | Ngk Insulators Ltd | Method and device for measuring water of fluid body |
| JPS6145511A (en) * | 1984-08-09 | 1986-03-05 | 日立電線株式会社 | Electric cable having moisture absorbing function |
| JPS62228934A (en) * | 1986-03-31 | 1987-10-07 | Inoue Japax Res Inc | Method for measuring moisture content of sludge |
-
1991
- 1991-03-15 JP JP3074414A patent/JPH04286939A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS614947A (en) * | 1984-06-20 | 1986-01-10 | Ngk Insulators Ltd | Method and device for measuring water of fluid body |
| JPS6145511A (en) * | 1984-08-09 | 1986-03-05 | 日立電線株式会社 | Electric cable having moisture absorbing function |
| JPS62228934A (en) * | 1986-03-31 | 1987-10-07 | Inoue Japax Res Inc | Method for measuring moisture content of sludge |
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