JPH01113634A - Infrared-ray moisture measuring apparatus - Google Patents
Infrared-ray moisture measuring apparatusInfo
- Publication number
- JPH01113634A JPH01113634A JP62270365A JP27036587A JPH01113634A JP H01113634 A JPH01113634 A JP H01113634A JP 62270365 A JP62270365 A JP 62270365A JP 27036587 A JP27036587 A JP 27036587A JP H01113634 A JPH01113634 A JP H01113634A
- Authority
- JP
- Japan
- Prior art keywords
- moisture
- light
- amount
- measured
- signal
- 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
- 238000005259 measurement Methods 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 9
- 238000004364 calculation method Methods 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 abstract description 9
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 abstract description 8
- 235000011164 potassium chloride Nutrition 0.000 abstract description 4
- 239000001103 potassium chloride Substances 0.000 abstract description 4
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 10
- 230000003287 optical effect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000001035 drying Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000000611 regression analysis Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 244000061176 Nicotiana tabacum Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3554—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for determining moisture content
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、被測定物に近赤外線を照射して被測定物中の
水分量を測定する装置に係わり、特に塩の含水量を測定
するのに適した赤外線水分測定装置に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an apparatus for measuring the water content in a measured object by irradiating the object with near infrared rays, and in particular for measuring the water content of salt. This invention relates to an infrared moisture measuring device suitable for.
（従来の技術〕
従来、近赤外線を利用した反射式赤外線水分計は、検出
器と変換器とから構成され、検出器は光学系と光電変換
部、変換器は検出信号を表示用の出力信号に変換する電
子回路で構成される。(Prior art) Conventionally, a reflection-type infrared moisture meter that uses near-infrared rays is composed of a detector and a converter. It consists of an electronic circuit that converts
検出器は、水分に対して高い吸収特性を示す近赤外線領
域の測定光とこの測定光付近の波長を有する参照光とを
被測定物に照射するとともに、それらの反射光量を検出
して電気信号に変換する。The detector irradiates the object to be measured with measurement light in the near-infrared region, which exhibits high absorption characteristics for moisture, and reference light with a wavelength near this measurement light, and detects the amount of reflected light to generate an electrical signal. Convert to
そして、変換器で反射光の電圧出力の比が水分量を示す
出力信号に変、換され、この出力信号に基づいて水分量
が測定される。Then, a converter converts the voltage output ratio of the reflected light into an output signal indicating the moisture content, and the moisture content is measured based on this output signal.
すなわち、被測定物によって反射・吸収された測定光を
光電変換してえられる電圧出力をＳ、反射された参照光
の電圧出力をＲ５水分による吸収率をｍ、被測定物に照
射した測定光と参照光のエネルギー量をそれぞれＥ、お
よびＥえとすると、の関係があり、電圧出力Ｓ、Ｒを測
定することにより水分量を知ることができる。In other words, S is the voltage output obtained by photoelectrically converting the measurement light reflected and absorbed by the object to be measured, R is the voltage output of the reflected reference light, m is the absorption rate by moisture, and is the measurement light irradiated onto the object to be measured. Let E and E be the energy amounts of the reference light, respectively, and there is the following relationship, and by measuring the voltage outputs S and R, the water content can be determined.
また、変換器で電圧出力の比を測定値を示す出力信号に
変換する際には、キャリブレーションにより予め設定さ
れた係数α、βを用い、Ｙ＝α＋β・Ｉｎ（Ｒ／Ｓ）
のように、電圧出力の比（Ｒ／Ｓ）を対数変換して１次
近似をし、これによって出力信号Ｙを得るようにしてい
る。In addition, when converting the ratio of voltage output into an output signal indicating the measured value using a converter, coefficients α and β set in advance by calibration are used, and Y = α + β · In (R / S). , the voltage output ratio (R/S) is logarithmically transformed to perform first-order approximation, thereby obtaining the output signal Y.
なお、これらの技術は特開昭５８−２０４３３６に記載
されており公知である。Incidentally, these techniques are described in Japanese Patent Laid-Open No. 58-204336 and are well known.
しかしながら、上記のような従来の水分計によれば、水
分量を示す出力信号を電圧出力の比（Ｒ／Ｓ）の対数変
換と１次近似によって得るようにしているが、塩、塩化
カリウムあるいは臭化カリウム等の場合には乾燥法等に
より測定された実際の水分量と出力信号とが線型関係に
ならず、測定誤差が大きくなるという問題があった。However, according to the conventional moisture meter described above, the output signal indicating the moisture content is obtained by logarithmic transformation of the voltage output ratio (R/S) and first-order approximation. In the case of potassium bromide, etc., there is a problem in that the actual moisture content measured by a drying method and the output signal do not have a linear relationship, resulting in a large measurement error.
上記の目的を達成するためになした本発明の赤外線水分
測定装置は、被測定物の水分量によって吸収特性が変化
する近赤外線領域の測定光と水分量にかかわりなく吸収
特性が変化しない参照光とを被測定物に照射してこの参
照光と測定光との反射光量を検出する水分検出部と、上
記水分検出部から出力される参照光の反射光量と測定光
の反射光量との比を求める除算手段と、予め設定される
値を係数とするとともに上記除算手段が出力する反射光
量の比を変数とする２次以上の高次多項式の値を演算す
る演算手段とを備え、上記演算手段による演算結果に基
づいて水分量を表示するようにしたことを特徴とする。The infrared moisture measuring device of the present invention, which has been made to achieve the above object, has a measurement light in the near-infrared region whose absorption characteristics change depending on the moisture content of the object to be measured, and a reference beam whose absorption characteristics do not change regardless of the moisture content of the object to be measured. a moisture detection section that irradiates the object to be measured and detects the amount of reflected light between the reference light and measurement light, and a moisture detection section that detects the amount of reflected light of the reference light and the amount of reflected light of the measurement light output from the moisture detection section. a calculating means for calculating a value of a second-order or higher-order polynomial having a preset value as a coefficient and a ratio of reflected light amounts outputted by the dividing means as a variable; The feature is that the moisture content is displayed based on the calculation result.
水分検出部により、被測定物に照射された測定光と参照
光との反射光量がそれぞれ検出され、この参照光の反射
光量と測定光の反射光量との比が除算手段により求めら
れる。そして、キャリブレーションなどにより予め設定
された値を係数とするとともに上記除算手段が出力する
反射光量の比を変数とする２次以上の高次多項式の値が
演算手段により水分量を示す出力信号として得られ、こ
の出力信号に基づいて水分量の表示が行われる。The moisture detecting section detects the amount of reflected light of the measuring light and the reference light irradiated onto the object to be measured, and the ratio of the amount of reflected light of the reference light to the amount of reflected light of the measuring light is determined by the dividing means. Then, the value of a second-order or higher-order polynomial whose coefficient is a value preset by calibration or the like and the ratio of the amount of reflected light outputted by the dividing means is used as an output signal indicating the water content by the calculation means. The moisture content is displayed based on this output signal.
第１図は本発明の赤外線水分測定装置の一実施例を示す
ブロック図である。FIG. 1 is a block diagram showing an embodiment of the infrared moisture measuring device of the present invention.
図において、１は水分検出部であり、光源１１、集光レ
ンズ１２、回転ディスク１３、同期信号発生器１３ａ、
反射鏡１４、凹面鏡１５１、凸面鏡１５２、光電変換器
１６、増幅器１７、信号分離器１８ｉ 、１８２．１８
ｇおよび加算器１９が含まれる。In the figure, 1 is a moisture detection section, which includes a light source 11, a condensing lens 12, a rotating disk 13, a synchronization signal generator 13a,
Reflector 14, concave mirror 151, convex mirror 152, photoelectric converter 16, amplifier 17, signal separator 18i, 182.18
g and an adder 19.
２は除算手段および演算手段としてのマイクロコンピュ
ータなどによる制御部、３は表示計器であり、後述説明
するように前記水分検出部１で得られる出力信号に基づ
いて表示計器３で測定値の表示が行われる。Reference numeral 2 denotes a control unit such as a microcomputer as a dividing means and calculation means, and 3 a display instrument, which displays the measured value based on the output signal obtained from the moisture detection section 1, as will be explained later. It will be done.
４はキャリブレーション等を行うときにデータを入力す
るキーボード、５は制御部２のコントローラ２８によっ
てデータを出力表示するＬＥＤ表示器である。Reference numeral 4 represents a keyboard for inputting data when performing calibration, etc., and reference numeral 5 represents an LED display for outputting and displaying data by the controller 28 of the control unit 2.
回転ディスク１３には異なる波長を選択透過する３種類
のフィルタが同心円上に設けられており、光源１１から
集光レンズ１２を介して放射される光は回転ディスク１
３の回転にともなって、被測定物の水分量によって吸収
特性が変化する近赤外の測定光と２種類の参照光に選択
的に切り替えられる。Three types of filters that selectively transmit different wavelengths are provided concentrically on the rotating disk 13, and the light emitted from the light source 11 through the condensing lens 12 is transmitted through the rotating disk 1.
3, the light is selectively switched to near-infrared measurement light whose absorption characteristics change depending on the moisture content of the object to be measured and two types of reference light.
この２種類の参照光には、水分量にかかわらず吸収特性
が変化しない近赤外線と、−被測定物の材質などの１つ
の特性によって吸収特性が変化する近赤外線とがそれぞ
れ用いられ、この第１．第２の２種類の参照光によって
被測定物の１つの特性による影響が補正される。These two types of reference light include near-infrared rays, whose absorption characteristics do not change regardless of the moisture content, and near-infrared rays, whose absorption characteristics change depending on one characteristic such as the material of the object to be measured. 1. The influence of one characteristic of the object to be measured is corrected by the second two types of reference beams.
これら測定光および第１．第２の参照光は反射鏡１４を
通してベルトコンベア７上の被測定物６に照射され、反
射光を凹面鏡１５１および凸面鏡１５２を介して光電変
換器１６に集光される。そして、被測定物６からの反射
光の光量に応じて光電変換器１６から出力される信号は
増幅器１７で増幅され、信号分離器１８ｓ ｙ１８ｔ
ｙ１８ｇに入力される。These measurement lights and the first. The second reference light is irradiated onto the object to be measured 6 on the belt conveyor 7 through the reflecting mirror 14, and the reflected light is focused onto the photoelectric converter 16 via the concave mirror 151 and the convex mirror 152. Then, a signal outputted from the photoelectric converter 16 according to the amount of reflected light from the object to be measured 6 is amplified by an amplifier 17, and then passed through a signal separator 18s y18t.
Input to y18g.
一方、前記回転ディスク１３の近傍に配設された同期信
号発生器１３ａからは回転ディスク１３の回転に同期し
た信号が出力され、この同期信号によって上記信号分離
器１８ｓ 、１８２ ．１８ａは測定光および第１．第
２の参照光のそれぞれの反射光量に応じた信号を分離す
る。On the other hand, a synchronizing signal generator 13a disposed near the rotary disk 13 outputs a signal synchronized with the rotation of the rotary disk 13, and this synchronizing signal causes the signal separators 18s, 182 . 18a is the measurement light and the first. Separate signals according to respective amounts of reflected light of the second reference light.
信号分離器１８１からは測定光による信号を分離して測
定光電圧出力Ｓが得られ、信号分離器１８２５１８ａは
第１．第２の参照光による信号をそれぞれ分離して加算
器１９に入力する。そして、この加算器１９からは被測
定物の１つの特性による影響を補正した参照光の出力と
して参照光電圧出力Ｒが得られる。The signal separator 181 separates the signal caused by the measurement light to obtain the measurement light voltage output S, and the signal separator 182518a separates the signal caused by the measurement light. The signals from the second reference light are separated and input to the adder 19. Then, from this adder 19, a reference light voltage output R is obtained as an output of the reference light corrected for the influence of one characteristic of the object to be measured.
上記のようにして水分検出部１から出力される測定光電
圧出力Ｓおよび参照光電圧出力Ｒは制御部２のマルチプ
レクサ（ＭＰＸ）２１を介してサンプルホールド回路（
ＳＨ）２２でサンプリングされ、このサンプリングされ
た測定光電圧出力Ｓおよび参照光電圧出力ＲはＡ／Ｄ変
換器２３でディジタルデータに変換されてＲＡＭ２４に
格納される。The measurement optical voltage output S and the reference optical voltage output R outputted from the moisture detection section 1 as described above are passed through the sample and hold circuit (MPX) 21 of the control section 2.
SH) 22, and the sampled measurement optical voltage output S and reference optical voltage output R are converted into digital data by the A/D converter 23 and stored in the RAM 24.
ＲＯＭ２５には演算プログラムが記録されており、この
演算プログラムに基づいてＣＰＵ２６の制御によって、
参照光電圧信号Ｒと測定光電圧信号Ｓの比、
Ｘ＝ −
が算出される。An arithmetic program is recorded in the ROM 25, and based on this arithmetic program, under the control of the CPU 26,
A ratio between the reference optical voltage signal R and the measured optical voltage signal S, X=-, is calculated.
一方、ＲＡＭ２４にはキャリブレーションによって設定
された係数値α、β、γが予め格納されており、上記参
照光電圧信号Ｒと測定光電圧信号Ｓの比Ｘと、係数値α
、β、Ｔによって、水分量の測定値、
Ｙ＝α＋βＸ＋γＸ２ ・・・・・・（１）が算出され
る。On the other hand, the coefficient values α, β, and γ set by calibration are stored in the RAM 24 in advance, and the ratio X of the reference optical voltage signal R and the measurement optical voltage signal S, and the coefficient value α
, β, and T, the measured value of water content, Y=α+βX+γX2 (1), is calculated.
そして、この測定値ＹはＤ／Ａ変換器２７でアナログ信
号に変換されて水分量に対して線型関係を有する出力信
号として出力され、この出力信号によって表示計器３に
水分量が表示される。This measured value Y is converted into an analog signal by the D/A converter 27 and output as an output signal having a linear relationship with the moisture content, and the moisture content is displayed on the display meter 3 based on this output signal.
第２図〜第４図は実施例の赤外線水分測定装置と従来の
水分計との水分測定の結果を比較して示す図であり、第
２図は精製塩、第３図は塩化カリウム、第４図は臭化カ
リウムについての測定結果をそれぞれ示す。また、第２
図〜第４図において、図（ａ）は実施例の赤外線水分測
定装置による測定結果を、図（ｂ）は従来の水分計によ
る測定結果を示す。Figures 2 to 4 are diagrams showing a comparison of the results of moisture measurement between the infrared moisture measuring device of the example and a conventional moisture meter, in which Figure 2 shows purified salt, Figure 3 shows potassium chloride, Figure 4 shows the measurement results for potassium bromide. Also, the second
In Figures 4 to 4, Figure (a) shows the measurement results by the infrared moisture measuring device of the embodiment, and Figure (b) shows the measurement results by the conventional moisture meter.
この第２図〜第４図かられかるように、対数変換と１次
近似によって測定値を得るようにしている従来の水分計
では、測定結果と乾燥法により実測された水分量との誤
差は大きいが、実施例のように高次多項式によって測定
値を得るようにした実施例の装置では、測定値と実測値
との誤差はほとんど生じていない。As can be seen from Figures 2 to 4, with conventional moisture meters that obtain measured values by logarithmic transformation and first-order approximation, the error between the measurement results and the actual moisture content measured by the drying method is small. Although this is large, in the apparatus of the embodiment in which the measured value is obtained using a high-order polynomial as in the embodiment, there is almost no error between the measured value and the actual measured value.
上記の実施例では、検出した水分量の測定値として２次
の多項式を用いるようにしているが、Ｙ＝α＋βＸ＋γ
Ｘ２＋δＸ３・・・・・・（２）のように、３次の多項
式によって求めるようにすることもできる。In the above embodiment, a quadratic polynomial is used as the measured value of the detected moisture content, but Y=α+βX+γ
It is also possible to obtain it using a third-order polynomial, such as X2+δX3 (2).
第５図は第２図の場合と同様の精製塩について、３次の
多項式を用いた水分量の測定結果を示す図であり、同図
かられかるように３次の多項式を用いた場合はさらに測
定精度が高められる。Figure 5 is a diagram showing the results of measuring the water content using a third-order polynomial for the same purified salt as in Figure 2; Furthermore, measurement accuracy is improved.
なお、高次多項式の各項の係数α、β、γ、δ等は前記
のようにキャリブレーションによって設定される。Note that the coefficients α, β, γ, δ, etc. of each term of the high-order polynomial are set by calibration as described above.
すなわち、制御部２のキーボード４からダミーの係数α
′ 、β′ 、γ′ 、δ′を入力してＹ’ ＝α′＋
β′Ｘ＋γ′Ｘ２＋δ′Ｘ３・・・・・・（３）とし、
この（３）式の演算によって被測定物の水分量を測定す
るとともに、乾燥法によって実際の水分量を求める。That is, the dummy coefficient α is input from the keyboard 4 of the control unit 2.
′ , β′ , γ′ , δ′ and calculate Y' = α′+
β′X+γ′X2+δ′X3・・・・・・(3),
The moisture content of the object to be measured is measured by calculating equation (3), and the actual moisture content is determined by the drying method.
そして測定値Ｙ′から変量Ｘを算出し、その変量Ｘと乾
燥法による実測値から高次回帰分析を行って係数α、β
、γ、δが求められる。Then, a variable X is calculated from the measured value Y', and a high-order regression analysis is performed using the variable
, γ, and δ are obtained.
なお、このような高次回帰分析およびダミーの係数の設
定等はプログラム化して自動的に行うようにすることが
できる。Note that such higher-order regression analysis, setting of dummy coefficients, etc. can be programmed and automatically performed.
以上説明したように本発明の赤外線水分測定装置によれ
ば、被測定物に照射した参照光と測定光の反射光量の比
を求め、この反射光量の比の２次以上の高次多項式の値
によって水分量の測定値を得るようにしたので、塩、塩
化カリウム、臭化カリウム等の水分量を正確に測定する
ことができる。As explained above, according to the infrared moisture measuring device of the present invention, the ratio of the amount of reflected light between the reference light irradiated onto the object to be measured and the measurement light is determined, and the value of the second-order or higher-order polynomial of the ratio of the amount of reflected light is obtained. Since the measured value of the water content is obtained by the method, the water content of salt, potassium chloride, potassium bromide, etc. can be accurately measured.
第１図は本発明の赤外線水分測定装置の一実施例のブロ
ック図、
第２図は実施例の赤外線水分測定装置と従来の水分計に
よる精製塩についての測定結果を示す図、
第３図は実施例の赤外線水分測定装置と従来の水分計に
よる塩化カリウムについての測定結果を示す図、
第４図は実施例の”赤外線水分測定装置と従来の水分計
による臭化カリウムについての測定結果を示す図、
第５図は本発明を適用した３次の多項式を用いて測定を
行う赤外線水分測定装置による精製塩についての測定結
果を示す図である。
１・・・水分検出部、２・・・制御部、３・・・表示計
器。
特許出願人 日本たばこ産業株式会社ｆｔ；４？ｊａ
ｇ７＞ １’／、ＷＥθ クト’−
ｆ＠ ｆ、 プ１ｐｔｍｅＪ（ａ）
（ｂ）第２図
（ａ） （ｂ）ｆ純刷ｎ−
力さＷ回 水８ｒ彎カドＷ明（ａ）
（ｂ）第４図
３フｒ％４靜ｎ仁カーFig. 1 is a block diagram of an embodiment of the infrared moisture measuring device of the present invention, Fig. 2 is a diagram showing measurement results for purified salt using the infrared moisture measuring device of the embodiment and a conventional moisture meter, and Fig. 3 is a diagram showing measurement results for purified salt using the infrared moisture measuring device of the embodiment and a conventional moisture meter. Figure 4 shows the measurement results for potassium bromide using the infrared moisture measuring device of the example and the conventional moisture meter. Figure 4 shows the measurement results of potassium bromide using the infrared moisture measuring device of the example and the conventional moisture meter. Figure 5 is a diagram showing the measurement results of purified salt by an infrared moisture measuring device that performs measurement using a third-order polynomial to which the present invention is applied.1... Moisture detection section, 2... Control unit, 3...Display instrument. Patent applicant: Japan Tobacco Inc. ft;4?ja
g7>1'/, WEθ ct'-
f@f, pu1ptmeJ(a)
(b) Figure 2 (a) (b) f pure printing n-
Power W times Water 8r Kado W Ming (a)
(b) Figure 4
Claims (1)
領域の測定光と水分量にかかわりなく吸収特性が変化し
ない参照光とを被測定物に照射してこの参照光と測定光
との反射光量を検出する水分検出部と、 上記水分検出部から出力される参照光の反射光量と測定
光の反射光量との比を求める除算手段と予め設定される
値を係数とするとともに上記除算手段が出力する反射光
量の比を変数とする２次以上の高次多項式の値を演算す
る演算手段とを備え、 上記演算手段による演算結果に基づいて水分量を表示す
るようにしたことを特徴とする赤外線水分測定装置。[Scope of Claims] Measurement light in the near-infrared region whose absorption characteristics change depending on the moisture content of the measured object and reference light whose absorption characteristics do not change regardless of the moisture content are irradiated onto the measured object. a moisture detection section that detects the amount of light reflected from the measurement light; a division means that calculates the ratio between the amount of reflected light of the reference light outputted from the moisture detection section and the amount of reflected light of the measurement light; and a preset value as a coefficient. and a calculation means for calculating the value of a second-order or higher-order polynomial in which the ratio of the amount of reflected light outputted by the division means is a variable, and the water content is displayed based on the calculation result by the calculation means. An infrared moisture measuring device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62270365A JPH01113634A (en) | 1987-10-28 | 1987-10-28 | Infrared-ray moisture measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62270365A JPH01113634A (en) | 1987-10-28 | 1987-10-28 | Infrared-ray moisture measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01113634A true JPH01113634A (en) | 1989-05-02 |
Family
ID=17485251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62270365A Pending JPH01113634A (en) | 1987-10-28 | 1987-10-28 | Infrared-ray moisture measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01113634A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012164440A (en) * | 2011-02-03 | 2012-08-30 | Furukawa Battery Co Ltd:The | Method of manufacturing electrode plate for lead storage battery |
| EP2414817A4 (en) * | 2009-03-30 | 2018-01-24 | Honeywell Asca, Inc. | Spectroscopy having correction for broadband distortion for analyzing multi-component samples |
| JP2019148607A (en) * | 2019-06-12 | 2019-09-05 | Ｊｆｅテクノリサーチ株式会社 | Inspection device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5566736A (en) * | 1978-11-15 | 1980-05-20 | Yokogawa Hokushin Electric Corp | Moisture meter |
-
1987
- 1987-10-28 JP JP62270365A patent/JPH01113634A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5566736A (en) * | 1978-11-15 | 1980-05-20 | Yokogawa Hokushin Electric Corp | Moisture meter |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2414817A4 (en) * | 2009-03-30 | 2018-01-24 | Honeywell Asca, Inc. | Spectroscopy having correction for broadband distortion for analyzing multi-component samples |
| JP2012164440A (en) * | 2011-02-03 | 2012-08-30 | Furukawa Battery Co Ltd:The | Method of manufacturing electrode plate for lead storage battery |
| JP2019148607A (en) * | 2019-06-12 | 2019-09-05 | Ｊｆｅテクノリサーチ株式会社 | Inspection device |
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