JPH0583859B2 - - Google Patents
Info
- Publication number
- JPH0583859B2 JPH0583859B2 JP1199811A JP19981189A JPH0583859B2 JP H0583859 B2 JPH0583859 B2 JP H0583859B2 JP 1199811 A JP1199811 A JP 1199811A JP 19981189 A JP19981189 A JP 19981189A JP H0583859 B2 JPH0583859 B2 JP H0583859B2
- Authority
- JP
- Japan
- Prior art keywords
- sample
- conveyor
- trough
- small piece
- moisture content
- 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
Links
- 238000010438 heat treatment Methods 0.000 claims description 16
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims 2
- 238000005259 measurement Methods 0.000 description 7
- 238000009423 ventilation Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 229910001120 nichrome Inorganic materials 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 241001122767 Theaceae Species 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、コンベヤにて小片集合体試料を搬送
しつつ該試料の水分値を測定する装置に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for measuring the moisture content of a small piece aggregate sample while conveying the sample on a conveyor.
コンベヤにて小片集合体試料を搬送しつつコン
ベヤ上の試料の重量を測定するとともに試料によ
るマイクロ波の減衰率を測定して試料の含水率を
求めようとするものは、特開平１−301152号公報
に見られ公知である。
Japanese Patent Laid-Open No. 1-301152 discloses a method that measures the weight of the sample on the conveyor while conveying the small piece aggregate sample on a conveyor, and measures the attenuation rate of microwaves by the sample to determine the moisture content of the sample. It is found in the official gazette and is publicly known.
前記のような装置において、試料が高水分であ
つたり薄片状であると、試料がコンベヤに付着し
てスムーズに搬送されずに、測定域において試料
の厚さが変わつたり、コンベヤ面との間に凝縮水
が付着したりして装定誤差の原因となりやすい。
よつて本願は、試料がコンベヤに付着するのを防
止して測定精度を向上した小片集合体試料の水分
値測定装置を提供することを目的とする。
In the above-mentioned apparatus, if the sample has high moisture content or is flaky, the sample will stick to the conveyor and will not be conveyed smoothly, resulting in changes in the thickness of the sample in the measurement area or contact with the conveyor surface. Condensed water may get stuck between them, which can easily cause installation errors.
Therefore, an object of the present application is to provide an apparatus for measuring the moisture value of a small piece aggregate sample, which improves measurement accuracy by preventing the sample from adhering to a conveyor.
本願の小片集合体試料の水分値測定装置は以下
の構成を備える。
The apparatus for measuring the moisture value of a small piece aggregate sample according to the present application has the following configuration.
コンベヤにて小片集合体試料を搬送しつつ該試
料にマイクロ波を照射して試料によりマイクロ波
が受ける減衰の率を検出し、試料の水分値を測定
する装置において、コンベアと試料の接触部を加
熱する加熱手段を設ける。 In an apparatus that measures the moisture content of a sample by irradiating the sample with microwaves while conveying a small piece aggregate sample on a conveyor and detecting the rate of attenuation of the microwaves received by the sample, the contact area between the conveyor and the sample is used. A heating means for heating is provided.
なお、コンベヤをトラフとバイブレータを主体
とする振動コンベヤとすること、コンベヤと試料
の接触部を加熱する加熱手段をコンベヤ近辺に配
設した遠赤外線放射体とすること、コンベヤをト
ラフとバイブレータで構成し、加熱手段をトラフ
に付設した電熱ヒーターとすること、コンベヤの
搬送面を通気性とし、加熱手段を試料側に熱風を
送風する熱風送風装置とすることが可能である。 In addition, the conveyor is a vibrating conveyor mainly consisting of a trough and a vibrator, the heating means for heating the contact area between the conveyor and the sample is a far-infrared radiator placed near the conveyor, and the conveyor is composed of a trough and a vibrator. However, the heating means can be an electric heater attached to the trough, the conveying surface of the conveyor can be made breathable, and the heating means can be a hot air blower that blows hot air toward the sample side.
コンベヤの搬送面に小片集合体試料が付着する
場合、試料とコンベヤとの間の凝縮水が接着剤の
役割を持つことがある。この場合、コンベヤの搬
送面と試料の接触部を加熱すれば、この水分が気
体となり体積が増大して試料が浮き上がるととも
に気化によつて付着力が弱まり、試料がコンベヤ
の搬送面から剥離しやすくなる。また、静電気そ
の他の原因による付着に対しても前記加熱により
試料が変形し、剥離しやすくなる。
When a small piece aggregate sample adheres to the transport surface of a conveyor, condensed water between the sample and the conveyor may act as an adhesive. In this case, if you heat the contact area between the conveyor's conveying surface and the sample, this moisture will turn into gas, increase its volume, lift the sample, and weaken the adhesive force due to vaporization, making it easier for the sample to peel off from the conveyor's conveying surface. Become. In addition, the heating deforms the sample and makes it easier to peel off the sample due to static electricity or other causes.
第１図、第２図において、１はコンベヤであつ
て、トラフ２、バイブレータ３からなる。トラフ
２はマイクロ波及び遠赤外線の反射が少ない材質
（例えばプラスチツクの薄板）で形成され、板バ
ネ３を介して中空枠４に支持される。バイブレー
タ３は、トラフ２の一端に取りつけられ偏心軸５
の回転により往復運動する駆動バネ６と、偏心軸
５を回転させるためのベベルギヤ７，７′、モー
タ８からなる。
In FIGS. 1 and 2, 1 is a conveyor, which is composed of a trough 2 and a vibrator 3. The trough 2 is made of a material (for example, a thin plastic plate) that reflects little microwave and far infrared rays, and is supported by the hollow frame 4 via a leaf spring 3. The vibrator 3 is attached to one end of the trough 2 and has an eccentric shaft 5.
It consists of a drive spring 6 that reciprocates due to the rotation of , bevel gears 7 and 7' for rotating the eccentric shaft 5, and a motor 8.
９，１０はトラフ２を挟んで配置されたマイク
ロ波の送受信アンテナであり、送信アンテナ９に
は発振器１１が接続され、受信アンテナ１０には
受振器１２が接続される。１３はロードセルであ
り、コンベヤ１全体の重量を検出する。１４は遠
赤外線ヒータであり、トラフの搬送面２′に下方
から指向し且つマイクロ波の伝播に影響を及ぼし
にくい位置に配設されている。 Reference numerals 9 and 10 are microwave transmitting and receiving antennas placed on both sides of the trough 2; an oscillator 11 is connected to the transmitting antenna 9, and a geophone 12 is connected to the receiving antenna 10. A load cell 13 detects the weight of the conveyor 1 as a whole. Reference numeral 14 denotes a far-infrared heater, which is disposed at a position that faces the conveying surface 2' of the trough from below and does not easily affect the propagation of microwaves.
１５は制御部であり、バイブレータ３、発振器
１１、遠赤外線ヒータ１４を作動あるいは停止
し、また、受振器１２、ロードセル１３の検出デ
ータを取り込み試料の含水率を算出する。１６は
試料の供給口である。 A control section 15 operates or stops the vibrator 3, oscillator 11, and far-infrared heater 14, and also takes in detection data from the geophone 12 and load cell 13 to calculate the water content of the sample. 16 is a sample supply port.
本実施例装置による試料の含水率の測定は次の
ように行う。まず、制御部１５は発振器１１、バ
イブレータ３、マイクロ波の発振器１１、遠赤外
線ヒータ１４を作動する。すると、マイクロ波は
送受信アンテナ９，１０間を伝播し、トラフ２は
第１図に二点鎖線及び矢印で示すように振動し、
またトラフの搬送面２′は50度以上に加熱される。
さらに制御部１５は、その時の受振器１２、ロー
ドセル１３の検出データを平均してマイクロ波エ
ネルギーとコンベヤ重量の初期値M0、W0を記憶
する。 The moisture content of a sample is measured using the apparatus of this embodiment as follows. First, the control unit 15 operates the oscillator 11, the vibrator 3, the microwave oscillator 11, and the far-infrared heater 14. Then, the microwave propagates between the transmitting and receiving antennas 9 and 10, and the trough 2 vibrates as shown by the two-dot chain line and arrow in FIG.
Further, the conveying surface 2' of the trough is heated to 50 degrees or more.
Further, the control unit 15 averages the detection data of the geophone 12 and the load cell 13 at that time and stores the initial values M0 and W0 of the microwave energy and the conveyor weight.
次に、試料の供給口１６からトラフ２上に高水
分小片集合体試料を供給する。試料としては、例
えば荒茶製造工程中の茶葉、各種植物の生葉、砂
利等があげられる。そして、コンベヤ１により試
料を搬送しつつ、制御部１５は、例えば50個／秒
の間隔で１分間、受振器１２、ロードセル１３の
検出データを累積し、その平均を検出値M1、W1
とする。マイクロ波エネルギーの検出値M1はマ
イクロ波が試料により減衰されるため初期値M0
より小さい値となり、一方、コンベヤ重量の検出
値W1は試料の重量分、初期値W0よりも大きい値
となる。 Next, a high moisture particle aggregate sample is supplied onto the trough 2 from the sample supply port 16. Examples of the sample include tea leaves in the process of producing crude tea, fresh leaves of various plants, gravel, and the like. Then, while conveying the sample by the conveyor 1, the control unit 15 accumulates the detection data of the geophone 12 and the load cell 13 for one minute at an interval of 50 pieces/second, and calculates the average of the detection data M1 and W1.
shall be. The detected value M1 of microwave energy is the initial value M0 because the microwave is attenuated by the sample.
On the other hand, the detected value W1 of the conveyor weight becomes a value larger than the initial value W0 by the weight of the sample.
そして、制御部１５は、前記１分間にコンベヤ
１により搬送された試料の含水率Ｇを次式によつ
て算出する。 Then, the control unit 15 calculates the moisture content G of the sample conveyed by the conveyor 1 during the one minute period using the following equation.
Ｇ＝ａ＊（M0−M1）／（W1−W0）＋ｂ
（ただし、ａ、ｂは実験によつて試料毎に求まる
定数である）
算出された含水率Ｇは表示され、あるいは他の
産業機械の制御に利用される。 G = a * (M0 - M1) / (W1 - W0) + b (However, a and b are constants determined for each sample through experiment) The calculated moisture content G is displayed or displayed on other industrial machines. used for control.
なお、高水分小片集合体試料は、それ自体の水
分を介してトラフの搬送面２′に付着しやすい。
しかし、本装置ではトラフと試料の接触部は遠赤
外線ヒータ１４により加熱されているため、該接
触部に存在する水分は加熱されて気体に変わり、
体積を増大して拡散する際に付着力が弱まり試料
はトラフから離れ易くなる。また、静電気その他
による試料の付着に対しても加熱により試料が変
形すれば剥離しやすくなる。仮に、前述のように
初期値M0、W0を求めた後に、試料の一部がトラ
フ２に付着してしまうと、この試料の重量、ある
いは含水量が検出値M1、W1に影響を与え測定誤
差を生じてしまう。また、一度試料が付着すれ
ば、それが抵抗となつて試料の搬送が阻害され更
に他の試料を付着させて、測定を全く不可能にし
てしまう恐れもある。しかし、本実施例装置によ
ればトラフに試料が付着する可能性が減るため、
測定精度が向上する。 Note that the high moisture particle aggregate sample tends to adhere to the conveyance surface 2' of the trough through its own moisture.
However, in this device, the contact area between the trough and the sample is heated by the far-infrared heater 14, so the moisture present in the contact area is heated and turns into gas.
When the volume increases and the sample spreads, the adhesion force weakens and the sample becomes easier to separate from the trough. In addition, even if the sample adheres due to static electricity or other factors, if the sample is deformed by heating, it becomes easy to peel off. If a part of the sample adheres to trough 2 after determining the initial values M0 and W0 as described above, the weight or water content of this sample will affect the detected values M1 and W1, causing measurement errors. will occur. Moreover, once a sample adheres, it becomes a resistance, which obstructs the conveyance of the sample and may cause other samples to adhere, making measurement completely impossible. However, with the device of this embodiment, the possibility of the sample adhering to the trough is reduced, so
Measurement accuracy is improved.
なお、試料を必要以上に加熱すると試料の含水
量や成分を変えてしまう恐れがあるので、試料と
コンベヤの接触部以外の加熱はできる限り避けた
い。このため、本実施例では、遠赤外線ヒータ１
４をトラフ２の下方に配置している。また、本実
施例では、コンベヤとしていわゆる振動コンベヤ
を使用したため、搬送中の高水分小片集合体試料
の密度が均一になりやすく、また試料の付着が生
じにくいため測定精度を向上できる。 Note that heating the sample more than necessary may change the moisture content and components of the sample, so it is best to avoid heating any area other than the contact area between the sample and the conveyor. Therefore, in this embodiment, the far infrared heater 1
4 is placed below the trough 2. In addition, in this example, since a so-called vibrating conveyor is used as the conveyor, the density of the high-moisture particle aggregate sample being transported tends to be uniform, and since the sample is less likely to adhere, measurement accuracy can be improved.
次に第３図乃至第５図に基づいて他の実施例を
簡単に説明する。本実施例は、コンベヤと試料と
の接触部の加熱を電熱ヒータで行うものである。
１７は前記の実施例におけるトラフ２に代替され
るトラフで、内トラフ１８と外トラフ１９の間に
ニクロム線２０が張り巡らされている。これに電
圧を加えれば、ニクロム線２０は発熱し、トラフ
１７上の試料の接触面を加熱する。このようなト
ラフ１７を用いれば、加熱手段のための設置空間
をほとんど必要としないので、装置をコンパクト
にできる。 Next, other embodiments will be briefly described based on FIGS. 3 to 5. In this embodiment, the contact portion between the conveyor and the sample is heated by an electric heater.
A trough 17 is a substitute for the trough 2 in the embodiment described above, and a nichrome wire 20 is stretched between the inner trough 18 and the outer trough 19. When a voltage is applied to this, the nichrome wire 20 generates heat and heats the contact surface of the sample on the trough 17. If such a trough 17 is used, almost no installation space is required for the heating means, so the apparatus can be made compact.
次に第６図、第７図に基づいて他の実施例を簡
単に説明する。本実施例は、トラフの搬送面を通
気性とし試料側に熱風を送風することによりトラ
フと試料の接触部を加熱するものである。２１は
やはり前記の実施例におけるトラフ２に代替され
るトラフで、その底面に多数の通気孔２２が穿設
され、その下方に送風室２３が装着される。送風
室２３には柔軟材料で形成された熱風供給管２４
が接続され、該管２４から送風室２３内に供給さ
れた熱風は通気孔２２から上方へ通気する。この
ようなトラフ２１を用いれば試料はより付着しに
くくなる。 Next, another embodiment will be briefly described based on FIGS. 6 and 7. In this embodiment, the conveying surface of the trough is made breathable and hot air is blown toward the sample to heat the contact area between the trough and the sample. The trough 21 is also a substitute for the trough 2 in the embodiment described above, and a number of ventilation holes 22 are bored in the bottom of the trough, and a ventilation chamber 23 is installed below the trough. A hot air supply pipe 24 made of a flexible material is provided in the ventilation chamber 23.
The hot air supplied from the pipe 24 into the ventilation chamber 23 is vented upward through the ventilation hole 22. If such a trough 21 is used, the sample will be more difficult to adhere to.
第８図はコンベヤとして、いわゆるベルトコン
ベヤ２５を利用した実施例である。ベルトコンベ
ヤを利用することにより、刷毛２６の併用による
試料の付着防止が可能になる。２７は遠赤外線ヒ
ータである。 FIG. 8 shows an embodiment in which a so-called belt conveyor 25 is used as the conveyor. By using the belt conveyor, it is possible to prevent the sample from adhering by using the brush 26 in combination. 27 is a far infrared heater.
なお、本願装置における測定器、部品、その材
質、配置等は、試料の性質、量やその他の条件に
よつて、種々選択される。 Note that the measuring instruments, parts, their materials, arrangement, etc. in the apparatus of the present invention are variously selected depending on the properties, quantity, and other conditions of the sample.
以上のように、本願の小片集合体試料の水分値
測定装置によれば、試料がコンベヤに付着するの
を防止して測定精度を向上することが可能であ
る。
As described above, according to the device for measuring the moisture value of a small piece aggregate sample of the present application, it is possible to prevent the sample from adhering to the conveyor and improve measurement accuracy.
第１図乃至第２図は本発明の実施例を示し、第
１図は正面図、第２図は側面図である。第３図乃
至第５図の他の実施例を示し、第３図は正面図、
第４図は側面図、第５図は平面図である。第６図
乃至第７図は他の実施例を示し、第６図は正面断
面図、第７図は側断面図である。第８図は他の実
施例を示す正面図である。
１……コンベヤ、２……トラフ、３……バイブ
レータ、９……送信アンテナ、１０……受信アン
テナ、１１……マイクロ波発振器、１２……マイ
クロ波受振器、１３……ロードセル、１４……遠
赤外線ヒータ、１７……トラフ、２０……ニクロ
ム線、２１……トラフ、２２……通気孔、２３…
…送風室、２４……熱風供給管、２５……ベルト
コンベヤ、２７……遠赤外線ヒータ。
1 and 2 show an embodiment of the present invention, with FIG. 1 being a front view and FIG. 2 being a side view. Other embodiments shown in FIGS. 3 to 5 are shown, and FIG. 3 is a front view;
FIG. 4 is a side view, and FIG. 5 is a plan view. 6 and 7 show other embodiments, with FIG. 6 being a front sectional view and FIG. 7 being a side sectional view. FIG. 8 is a front view showing another embodiment. 1... Conveyor, 2... Trough, 3... Vibrator, 9... Transmitting antenna, 10... Receiving antenna, 11... Microwave oscillator, 12... Microwave geophone, 13... Load cell, 14... Far-infrared heater, 17...trough, 20...nichrome wire, 21...trough, 22...ventilation hole, 23...
...Blower room, 24...Hot air supply pipe, 25...Belt conveyor, 27...Far infrared heater.
Claims (1)
試料にマイクロ波を照射して試料によりマイクロ
波が受ける減衰の率を検出し試料の含水率を測定
する装置において、コンベアと試料の接触部を加
熱する加熱手段を備えたことを特徴とする小片集
合体試料の水分値測定装置。 ２ コンベヤをトラフとバイブレータを主体とす
る振動コンベヤとしたことを特徴とする請求項１
に記載の小片集合体試料の水分値測定装置。 ３ 加熱手段がコンベヤ近辺に配設した遠赤外線
放射体であることを特徴とした請求項１または請
求項２に記載の小片集合体試料の水分値測定装
置。 ４ 加熱手段がトラフに付設した電熱ヒーターで
あることを特徴とした請求項２に記載の小片集合
体試料の水分値測定装置。 ５ コンベヤの搬送面を通気性とし、加熱手段を
試料側に熱風を送風する熱風送風手段としてコン
ベヤと試料の接触部を加熱することを特徴とした
請求項１または請求項２に記載の小片集合体試料
の水分値測定装置。[Scope of Claims] 1. In an apparatus for measuring the moisture content of a sample by irradiating microwaves onto the sample while conveying a small piece aggregate sample on a conveyor and detecting the rate of attenuation of the microwaves received by the sample, 1. An apparatus for measuring moisture content of a small piece aggregate sample, characterized in that it is equipped with a heating means for heating a contact portion between the sample and the sample. 2 Claim 1 characterized in that the conveyor is a vibrating conveyor mainly consisting of a trough and a vibrator.
A moisture value measuring device for a small piece aggregate sample described in . 3. The apparatus for measuring moisture content of a small piece aggregate sample according to claim 1 or 2, wherein the heating means is a far-infrared radiator disposed near the conveyor. 4. The apparatus for measuring moisture content of a small piece aggregate sample according to claim 2, wherein the heating means is an electric heater attached to the trough. 5. The small piece collection according to claim 1 or claim 2, wherein the conveyance surface of the conveyor is made breathable, and the heating means serves as hot air blowing means for blowing hot air toward the sample to heat the contact area between the conveyor and the sample. A device for measuring moisture levels in body samples.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19981189A JPH0363554A (en) | 1989-08-01 | 1989-08-01 | Measuring instrument for small-piece assembly sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19981189A JPH0363554A (en) | 1989-08-01 | 1989-08-01 | Measuring instrument for small-piece assembly sample |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0363554A JPH0363554A (en) | 1991-03-19 |
| JPH0583859B2 true JPH0583859B2 (en) | 1993-11-29 |
Family
ID=16414033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19981189A Granted JPH0363554A (en) | 1989-08-01 | 1989-08-01 | Measuring instrument for small-piece assembly sample |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0363554A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106959256A (en) * | 2017-05-19 | 2017-07-18 | 四川莱源科技有限公司 | The moisture detecting method of accuracy of detection can be improved |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57100339A (en) * | 1980-12-15 | 1982-06-22 | Hitachi Ltd | Moisture detecting apparatus having temperature sensor |
| JPS6161452B2 (en) * | 1981-09-28 | 1986-12-25 | Nippon Bikutaa Kk |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56167239U (en) * | 1980-05-16 | 1981-12-10 | ||
| JPS645229Y2 (en) * | 1984-09-28 | 1989-02-09 |
-
1989
- 1989-08-01 JP JP19981189A patent/JPH0363554A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57100339A (en) * | 1980-12-15 | 1982-06-22 | Hitachi Ltd | Moisture detecting apparatus having temperature sensor |
| JPS6161452B2 (en) * | 1981-09-28 | 1986-12-25 | Nippon Bikutaa Kk |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0363554A (en) | 1991-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| BE1008931A3 (en) | Method and device for maintaining the values between best and substantially the constant caracteristisques elasto-plastic a thermoplastic film, in particular of a stretch film for packaging of products. | |
| JPH04227093A (en) | Method and device for classifying solid matter | |
| GB2043223A (en) | Method and apparatus for drying tobacco | |
| JPH0583859B2 (en) | ||
| EP0297604A3 (en) | Reflectometric moisture meter for capillary-porous materials, especially for the soil | |
| EP0383484A1 (en) | Drying | |
| FI64457B (en) | ANORDING FOR FRYSTORKNING WITH MICROVAOGOR | |
| Von Schickfus et al. | Improving the SAW gas sensor: device, electronics and sensor layer | |
| US5689060A (en) | Humidity measuring device and a heat cooker employing the device | |
| CA1228399A (en) | Water moisture measuring instrument and method | |
| DE60134417D1 (en) | Co2-ultraschallsensor | |
| US5237142A (en) | Method and device for determining the weight of a food contained in a microwave oven | |
| JP2006106686A5 (en) | ||
| JPS6075270A (en) | Method and apparatus for separating tobacco leaves in bale | |
| JP3631840B2 (en) | Moisture measurement method by microwave | |
| US4922933A (en) | Tobacco separation or delamination method | |
| Swann et al. | The determination of gaseous molecular density using a hybrid vapour sensor | |
| JPS6364788B2 (en) | ||
| ZA877068B (en) | Method of and apparatus for applying a fluid to a bulk commodity | |
| EP0713065A1 (en) | Compact-dimension device for sensing frost on a refrigerator evaporator | |
| JP2003297528A5 (en) | ||
| JPH09327263A (en) | Control device for leaf beating machine and its control | |
| JPH051987A (en) | Measurement device for moisture or volatile component | |
| Falconer et al. | An activation process for increased sensitivity of a SAW gas microsensor | |
| JPS6380189A (en) | High-frequency dielectric drier |