公开(公告)号：US09267907B2

公开(公告)日：2016-02-23

申请号：US13979764

申请日：2012-01-18

申请人： Frank Probst ,  Josef Richter

发明人： Frank Probst ,  Josef Richter

IPC分类号： G01N27/04 ,  G01F1/69 ,  G01F1/684 ,  G01F1/696 ,  G01N27/18

CPC分类号： G01N27/046 ,  G01F1/6845 ,  G01F1/69 ,  G01F1/696 ,  G01N27/18

摘要： A measurement arrangement includes four electrically heated resistors which are arranged in gas paths and are connected to form a Wheatstone bridge, where each of two resistors which are diagonally opposite each other in the Wheatstone bridge are contained in a respective component arranged on a common heated carrier, each respective component is assigned to one heating resistor arranged near the component on the carrier, and where an unbalanced state of the Wheatstone bridge is compensated for by variably energizing the heating resistors.

摘要翻译： 测量装置包括四个电加热电阻器，它们被布置在气体路径中并且连接形成惠斯登电桥，其中在惠斯通电桥中彼此对角相对的两个电阻器中的每个电阻器被包含在布置在公共加热载体上的相应部件中 ，各个部件分配给一个位于载体上的部件附近的加热电阻器，并且通过可变地激励加热电阻器来补偿惠斯通电桥的不平衡状态。

公开(公告)号：US08610445B2

公开(公告)日：2013-12-17

申请号：US12265427

申请日：2008-11-05

申请人： Norbert Diekhans ,  Bastian Kriebel ,  Frank Claussen

发明人： Norbert Diekhans ,  Bastian Kriebel ,  Frank Claussen

IPC分类号： G01R27/08 ,  A01D75/18

CPC分类号： A01D43/085 ,  G01N27/043 ,  G01N27/046 ,  G01N27/048

摘要： A measuring device for measuring components of a crop material is installed on an agricultural machine and includes at least one conductance sensor, determining the component “moisture content”, which is determined via the temperature-compensated detection of conductance. In this manner it is ensured that the measuring device delivers reliable measurement results for determining the components of a crop material even under fluctuating measuring conditions.

摘要翻译： 用于测量作物材料的部件的测量装置安装在农业机器上，并且包括至少一个电导传感器，确定通过温度补偿的电导检测确定的部件“含水量”。 以这种方式，即使在波动的测量条件下，确保测量装置提供用于确定作物材料的组分的可靠的测量结果。

公开(公告)号：US4132944A

公开(公告)日：1979-01-02

申请号：US857347

申请日：1977-12-02

申请人： Allan J. Bentz

发明人： Allan J. Bentz

IPC分类号： G01N27/02 ,  G01N27/04 ,  G01R27/22 ,  G01N27/42

CPC分类号： G01N27/046 ,  G01N27/02 ,  G01R27/22

摘要： Apparatus for monitoring the temperature, and the electrical conductance and capacitance, of a liquid product during processing of the liquid product, and automatically converting the measured electrical conductance and capacitance values to the conductance capacitance of the liquid product at a selected reference temperature of the product. An a.c. sine wave voltage is applied across a conductivity cell immersed in the liquid and an admittance signal proportional to the current flowing through the cell is resolved into a signal proportional to the conductance of the liquid, and a signal proportional to the capacitance of the liquid, within the cell. A thermocouple at the conductivity cell produces a signal proportional to the liquid temperature, which is compared with a selected reference temperature signal, and the signal proportional to the difference between the temperature signal and the reference signal is applied to temperature compensation circuits to produce respective signals proportional to the conductance and capacitance of the liquid at the selected reference temperature.

公开(公告)号：US3965414A

公开(公告)日：1976-06-22

申请号：US581816

申请日：1975-05-29

申请人： Horace A. Teass, Jr.

发明人： Horace A. Teass, Jr.

IPC分类号： G01N27/04 ,  G01N27/06 ,  G01R27/22 ,  G01N27/42

CPC分类号： G01N27/046 ,  G01N27/06 ,  G01R27/22

摘要： A system for determining the resistance of an electrolyte into which a conductivity probe is immersed, the system including a thermistor network, a probe or conductivity cell, and amplifiers all of which are so combined that the changes in electrolyte concentrations causing variations in resistance are measured with corrections being made for electrolyte temperature variation. The probe and thermistor networks control the feedback of the amplifier, and the probe and thermistor networks being arranged to adjust the output whereby the signal is in true proportion to conductivity.

摘要翻译： DA系统，用于确定浸入电导率探针的电解质的电阻，该系统包括热敏电阻网络，探针或导电电池，以及放大器，所有这些组合使得测量导致电阻变化的电解质浓度的变化被测量 对电解质温度变化做了修正。 探头和热敏电阻网络控制放大器的反馈，并且探针和热敏电阻网络被布置成调节输出，由此信号与传导率成正比。

公开(公告)号：US3824461A

公开(公告)日：1974-07-16

申请号：US39573673

申请日：1973-09-10

申请人： PREIKSCHAT F

发明人： PREIKSCHAT F

IPC分类号： G01N27/04 ,  G01R17/00 ,  G01R27/26

CPC分类号： G01N27/048 ,  G01N27/041 ,  G01N27/046 ,  G01R17/00

摘要： Apparatus for measuring the electrical impedance of a variety of materials including an electrode arrangement providing sample data to an impedance bridge, a frequency generator providing a test signal to the impedance bridge, the impedance bridge including a transformer having three separate windings, two of which are highly symmetrical to each other and all three of which have an impedance below 10,000 ohms, and four resistors having resistance values differing from the impedance of the transformer windings but comparable to the unknown impedance, two of the four resistors connected to each of the two symmetrical windings of the transformer. Output devices for displaying the electrical impedance are also disclosed. In one embodiment, a sample box useful in the measurement of the electrical impedance of bulk materials including novel means for mounting an electrode therein is disclosed. Also disclosed in another embodiment is apparatus useful for measuring the electrical impedance of thin sheet material including novel mechanical thermal compensation means.

摘要翻译： 用于测量各种材料的电阻抗的装置，包括向阻抗桥提供采样数据的电极装置，向阻抗桥提供测试信号的频率发生器，阻抗桥包括具有三个单独绕组的变压器，其中两个是 高度对称，所有三个阻抗低于10,000欧姆，四个电阻具有不同于变压器绕组的阻抗但与未知阻抗相当的电阻值，四个电阻中的两个连接到两个对称的 变压器绕组。 还公开了用于显示电阻抗的输出装置。 在一个实施例中，公开了一种用于测量散装材料的电阻抗的样品盒，包括用于在其中安装电极的新型装置。 在另一个实施例中还公开了可用于测量包括新型机械热补偿装置的薄片材料的电阻抗的装置。

公开(公告)号：US3657731A

公开(公告)日：1972-04-18

申请号：US3657731D

申请日：1969-11-17

申请人： POLYMETRON LTD

发明人： KRAUER WERNER ,  MARTINELLI ALFRED ,  OEHME FRIEDRICH

IPC分类号： G01K1/14 ,  G01K1/16 ,  G01N27/04 ,  G01N27/42

CPC分类号： G01N27/046 ,  G01K1/14 ,  G01K1/16

摘要： A temperature detector for a conductivity-measuring cell having a heat-sensitive element which has electrical properties that very in accordance with temperature. The heat-sensitive element is inserted in a bore of an electrode of the conductivitymeasuring cell and is not in direct contact with the sample liquid. A metal beaker is first inserted in the electrode, preferably made of graphite, and a small diameter metal tube with a cap is located above the metal beaker. A high thermal conductivity paste is inserted in the space between the bore of the electrode and the metal beaker. The heat-sensitive element can be in the form of a removable cartridge and can consist, for example, of a semiconductor or a platinum resistance thermometer.

摘要翻译： 一种用于具有热敏元件的电导率测量单元的温度检测器，其具有非常符合温度的电气特性。 热敏元件插入电导率测量元件的电极的孔中，不与样品液体直接接触。 首先将金属烧杯插入电极中，优选由石墨制成，并且具有帽的小直径金属管位于金属烧杯上方。 将高导热性浆料插入电极孔和金属烧杯之间的空间中。 热敏元件可以是可移除盒的形式，并且可以由例如半导体或铂电阻温度计组成。

公开(公告)号：US3500187A

公开(公告)日：1970-03-10

申请号：US3500187D

申请日：1969-03-20

申请人： BETHLEHEM STEEL CORP

发明人： FEGAN LLOYD V JR

IPC分类号： G01K1/08 ,  G01N27/04 ,  G01R27/02

CPC分类号： G01N27/046 ,  G01K1/08

公开(公告)号：US3382430A

公开(公告)日：1968-05-07

申请号：US47463865

申请日：1965-07-26

申请人： BECKMAN INSTRUMENTS INC

发明人： CUNNIFF LEO C ,  ROBERT ROSENTHAL

IPC分类号： G01N27/04

CPC分类号： G01N27/046

公开(公告)号：US3188561A

公开(公告)日：1965-06-08

申请号：US11986661

申请日：1961-06-27

申请人： MAXWELL INGRAM

发明人： MAXWELL INGRAM

IPC分类号： G01N27/04 ,  G05D21/02

CPC分类号： G01N27/046 ,  G01N27/045 ,  G05D21/02

公开(公告)号：US2769072A

公开(公告)日：1956-10-30

申请号：US38357353

申请日：1953-10-01

申请人： WEST VIRGINIA PULP & PAPER CO

发明人： NOEL OBENSHAIN DAVID

IPC分类号： G01N27/04

CPC分类号： G01N27/046