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    Relative humidity measurement
    91.
    发明授权
    Relative humidity measurement 失效
    相对湿度测量

    公开(公告)号：US4227411A

    公开(公告)日：1980-10-14

    申请号：US077913

    申请日：1979-09-24

    Applicant: Abe Abramovich

    Inventor： Abe Abramovich

    IPC: G01N25/68 ,  G01N27/04 ,  G01N31/00

    CPC classification number: G01N27/048 ,  G01N25/68

    Abstract: A relative humidity measuring instrument includes two spaced electrodes on an insulating substrate which is mounted on a Peltier-effect thermoelectric module. When the substrate is cooled by the thermoelectric module, a comparator connected to the electrodes on the substrate detects a decrease in resistance between said electrodes due to condensation of moisture therebetween. Then a microcomputer receptive to temperature signals from a thermometer on the substrate and an ambient thermometer computes the relative humidity.

    Abstract translation: 相对湿度测量仪器在绝缘衬底上包括两个间隔开的电极，其安装在珀耳帖效应热电模块上。 当基板被热电模块冷却时，连接到基板上的电极的比较器检测由于它们之间的水分冷凝而导致的所述电极之间的电阻的降低。 然后接收来自基板上的温度计的温度信号的微型计算机和环境温度计计算相对湿度。

    Method and apparatus for determining the moisture content of different kinds of materials
    92.
    发明授权
    Method and apparatus for determining the moisture content of different kinds of materials 失效
    确定不同种类材料含水量的方法和装置

    公开(公告)号：US4019132A

    公开(公告)日：1977-04-19

    申请号：US579950

    申请日：1975-05-22

    Applicant: Ernst Loch

    Inventor： Ernst Loch

    IPC: G01N27/04 ,  G01R27/02

    CPC classification number: G01N27/048

    Abstract: A method and apparatus for determining the moisture content of different kinds of materials wherein electrodes having a voltage supplied thereto are applied to the material to be tested for providing a measuring current corresponding to the moisture content of the material. The measuring current is applied to an amplifier having a low-valued input resistance and the moisture content is determined by adjusting a scale graduated in moisture values in accordance with the output of the amplifier. A balancing device is provided for balancing the output of the amplifier and the scale is connected to the balancing device to indicate a balance position as the moisture content value. The amplifier is also provided with a device for converting the measuring current to a voltage corresponding to the logarithm of change in current and a device for providing temperature compensation.

    Abstract translation: 一种用于确定不同种类材料的水分含量的方法和装置，其中具有供应电压的电极被施加到待测试的材料上，以提供与材料的水分含量相对应的测量电流。 测量电流被施加到具有低值输入电阻的放大器，并且通过根据放大器的输出调节按湿度值分级的刻度来确定水分含量。 提供平衡装置用于平衡放大器的输出，并且刻度尺连接到平衡装置以指示作为水分含量值的平衡位置。 放大器还具有用于将测量电流转换成对应于电流变化对数的电压的装置和用于提供温度补偿的装置。

    Electrical indicators
    93.
    发明授权
    Electrical indicators 失效
    电气指标

    公开(公告)号：US3979667A

    公开(公告)日：1976-09-07

    申请号：US532672

    申请日：1974-12-13

    Applicant: Nigel W. Cornes

    Inventor： Nigel W. Cornes

    IPC: G01N27/00 ,  G01N27/04 ,  G01R17/16 ,  G01R19/165 ,  G01R27/02 ,  G01R27/20

    CPC classification number: G01R19/16571 ,  G01N33/246 ,  G01R17/16 ,  G01R27/02 ,  G01N27/048

    Abstract: A domestic soil-moisture indicator of the kind including a probe comprising a pair of electrodes with spaced ends for insertion in the soil whereby the resistance of the conductive path established between them by the soil to be tested varies in resistance with the moisture of the soil. The improvement comprises a control circuit responsive to the value of the variable resistance and including a pair of light-emitting devices, connected in such a way that the total power between them is substantially constant and, at one end of the scale of value of the variable resistance, one device is fully on and the other is off, while at the other end of the scale the one device is off and the other is fully on, the brightness of the two devices varying between these extremes for intermediate values. The light-emitting devices are preferably light-emitting diodes each of which is connected in series with one of a complementary pair of emitter-following transistors connected to the division point of a potential divider consisting of the variable soil resistance and a fixed resistance connected in series with one another across the source of supply.

    Abstract translation: 一种家用土壤湿度指示器，包括一个探头，包括一对电极，间隔开的端部用于插入土壤中，由此被测试土壤在其间建立的导电路径的阻力随着土壤湿度的变化而变化 。 该改进包括响应于可变电阻的值的控制电路，并且包括一对发光装置，其以这样的方式连接，使得它们之间的总功率基本上是恒定的，并且在该值的一端 可变电阻，一个装置完全打开，另一个装置关闭，而在刻度的另一端，一个装置关闭，另一个装置完全打开，两个装置的亮度在这些极值之间变化，用于中间值。 发光装置优选是发光二极管，每个发光二极管与互连的一对发射极跟随晶体管串联连接，所述互补的一对发射极跟随晶体管连接到由可变的电阻构成的电位分配器的分割点和连接到 在供应来源上相互串联。

    Portable soil moisture tester
    94.
    发明授权
    Portable soil moisture tester 失效
    便携式土壤水分测试仪

    公开(公告)号：US3968428A

    公开(公告)日：1976-07-06

    申请号：US510484

    申请日：1974-09-30

    Applicant: Minoru Numoto

    Inventor： Minoru Numoto

    IPC: G01N27/04 ,  G01R27/14 ,  G01R27/20

    CPC classification number: G01N27/048 ,  G01N27/041 ,  G01R27/14 ,  G01R27/20

    Abstract: A ground moisture testing and indicating device designed for quick and simple measurement of ground moisture by an untrained layman for use in connection with sowing seeds, transplanting saplings and young plants, and cultivating plants of all kinds by ascertaining the ground moisture at predetermined depths. The device is particularly useful in irrigated gardening and horticultural and agricultural farming. As conductivity of electrical current in soil varies with the content of moisture therein, the resistance of the soil is a direct function of the moisture content of the soil. The present device measures resistance of the soil at a given depth and thereby indicates the moisture of the soil at that point. A direct current voltage is generated to indicate such value by a suitable indicating device, such as a meter, a sound device utilizing a loudspeaker, or an earphone, or a visual device, such as a lamp or photodiode, etc., for detection and evaluation. The device includes a sensor at the lower end of a ground insertion rod, the sensor being connected to an electrical circuit with suitable indicating devices at the head end of the device. The ground inserting rod is provided with an adjustable depth control device for controlling the insertion whereby the soil moisture being tested may be that of the soil at the mean depth of the plant roots which is different for different plants at different stages of their growths. The head end of the testing device may be in the shape of a walking stick handle for facilitating insertion of the rod into the ground.

    Abstract translation: 一种地面湿度测试和指示装置，设计用于通过未经培训的外行人快速简单地测量地面水分，用于播种种子，移栽树苗和幼苗，以及通过确定预定深度的地面水分来种植各种植物。 该设备在灌溉园艺和园艺和农业耕作方面特别有用。 由于土壤中电流的电导率随其中水分含量的变化而变化，所以土壤的电阻是土壤水分含量的直接函数。 本装置测量在给定深度处的土壤的阻力，从而在该点处指示土壤的水分。 产生直流电压以通过合适的指示装置（例如仪表，使用扬声器的声音装置或耳机）或诸如灯或光电二极管等的视觉装置来指示该值，用于检测和 评估。 该装置包括位于接地插入杆的下端的传感器，该传感器连接到具有在装置的头端的合适的指示装置的电路。 地面插入杆设置有可调节的深度控制装置，用于控制插入，由此被测试的土壤湿度可以是植物根部的平均深度处的土壤的土壤湿度，其对于不同植物在其生长的不同阶段是不同的。 测试装置的头端可以是用于便于将杆插入地面的手杖手柄的形状。

    Apparatus for continuously determining the moisture content of a moving ore bed
    95.
    发明授权
    Apparatus for continuously determining the moisture content of a moving ore bed 失效
    连续测定移动板的水分含量的装置

    公开(公告)号：US3875504A

    公开(公告)日：1975-04-01

    申请号：US22708872

    申请日：1972-02-17

    Applicant: JOHNS MANVILLE

    Inventor： BODYCOMB JR FREDERICK MERCER ,  BARNA JAMES JULIUS

    IPC: G01N27/04 ,  G01R27/02 ,  G01R27/22

    CPC classification number: G01N27/048 ,  G01R27/02 ,  G01R27/22

    Abstract: The disclosure relates to a method for controlling the moisture content of ore exiting from a drier and an apparatus for effecting the measurement of the moisture content. A portion of the ore exiting from the drier is diverted onto a conveyor to form a moving ore bed sample. The moisture content of this sample is measured by an apparatus which comprises a conductivity meter provided with a pair of electrodes having convex surfaces in contact with the moving surface of the ore sample. The electrodes are maintained a fixed relative distance apart to insure a constant amount of ore therebetween and thus an accurate relative measurement of the moisture content for different positions of the ore bed as the ore passes by the electrodes. The measurements are converted to signals which actuate control apparatus to effect any necessary adjustments in the drying process to maintain the moisture content of the ore within specified limits.

    Abstract translation: 本公开涉及一种用于控制从干燥器排出的矿石的含水量的方法和用于实现水分含量测量的装置。 从干燥器中排出的矿石的一部分被转移到输送机上以形成移动的矿床样品。 该样品的含水量通过一种装置测量，该装置包括一个电导率计，该电导率计设有一对具有与矿样的移动表面接触的凸面的电极。 电极保持相对固定的相对距离，以确保其间的恒定量的矿石，因此当矿石通过电极时矿床的不同位置的水分含量的精确相对测量。 这些测量被转换成信号，其致动控制装置以在干燥过程中进行任何必要的调整，以将矿石的含水量保持在规定的限度内。

    Moisture controller for drycleaning system
    97.
    发明授权
    Moisture controller for drycleaning system 失效
    湿度控制器用于干燥系统

    公开(公告)号：US3611253A

    公开(公告)日：1971-10-05

    申请号：US3611253D

    申请日：1970-01-26

    Applicant: STAUFFER CHEMICAL CO

    Inventor： GILLESPIE ROBERT A

    IPC: D06F43/00 ,  G01N27/04 ,  G05D22/02 ,  H01R13/60

    CPC classification number: D06F43/005 ,  G01N27/048 ,  G05D22/02 ,  Y10S439/908 ,  Y10S439/913 ,  Y10T137/2499 ,  Y10T137/2509

    Abstract: A drycleaning system which includes a washer for cleaning fabrics, a filter, conduit means interconnecting the washer and filter and a pump for circulating a volatile organic drycleaning solvent having a drycleaning detergent and water added thereto through the washer and filter. An impedance electrode is connected into the conduit means which is electrically connected to an impedance controller that controls a water supply unit for adding water to the drycleaning system. The impedance electrode means consists of a housing having a single concentric electrode positioned therein and a mounting means for holding said concentric electrode within the housing.

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