Class 73/25.02 - With magnetic property (e.g., paramagnetic gas)

Subclass of Class 73 - Measuring and testing
Definition: Subject matter wherein the gas being analyzed produces a
No. of patents: 36
Last issue date: 06/01/2010

Number	Title	Issue Date
7726176	Detector mounting in paramagnetic gas analyzers The invention relates to paramagnetic gas analyzer with a housing, comprising: an electromagnet with an air gap; power source for said electromagnet; a sample gas conduit and a reference gas conduit into said air gap; an exit conduit communicating with said air gap ...	06/01/2010
7102346	Measuring cell for determining characteristics of a paramagnetic gas based on gas flow sweeping past a test element A measuring cell for use in apparatus for the measurement of the magnetic characteristics of a gas comprises means (5) defining a chamber (3) in which a test element (11) is suspended such as to be able to rotate about an axis, and means de inle...	09/05/2006
7040140	Device for suspension of a sample body A device for suspension of a sample body which rotates in space about a rotation axis which is in a fixed position or is related to a fixed position, as a function of the intensity of a measurement effect. In order to ensure that a sample mass is mounted in the devi...	05/09/2006
7016790	In-line hot-wire sensor for slurry monitoring An in-line hot-wire sensor for monitoring the mixing and the flow rate of slurry is disclosed. The hot-wire sensor may include a number of resistors organized into a Wheatstone bridge, as well as a frequency-domain transform mechanism. The resistors include a hot-wi...	03/21/2006
6952947	Measuring head for a device for measuring the concentration of a paramagnetic gas A measuring head for the determination of the concentration of a paramagnetic gas in a gas sample has first and second housing parts (21, 2) made of a steel alloy for accommodating a magnet coil body (4, 5) each. The magnet coil bodies extend concentri...	10/11/2005
6918283	System and method for demonstrating and investigating brownian motion effects on a diamagnetically suspended particle An apparatus for demonstrating, investigating and observing Brownian motion and temperature of a medium, such as gas or liquid, uses a small particle which is diamagnetically suspended in the medium. The tiny magnetized particle having a known mass is levitated usin...	07/19/2005
6918300	System and method for determining the resonant frequency and/or amplitude of an oscillating appliance such as a power toothbrush A system and corresponding method for determining the frequency and/or amplitude of an oscillating apparatus, which includes a driving assembly having a stator portion and an armature portion, and a driving signal circuit which supplies a driving signal to the stato...	07/19/2005
6895802	Measuring gas cell for a device for measuring the concentration of a paramagnetic gas A highly compact measuring gas cell for a device for measuring the concentration of a paramagnetic gas on the basis of the change in the thermal conductivity of the paramagnetic gas, which is brought about by a change in the magnetic field. The measuring gas cell ha...	05/24/2005
6739179	Device for measuring the oxygen concentration in gases A measuring device for determining the oxygen content in gases is described. The measuring device is disposed between two magnets that are positioned at a distance from one another. The measuring device is equipped with a sensor that is held rotatably within a frame...	05/25/2004
6520001	Apparatus and method for the determination of the relative proportions of gases The present invention relates to a method of determining the relative proportions of gases in a mixture, such that the relative proportions of N gases are determined using N-1 sensors, not all of which are specific to a particular gas. In the preferred em...	02/18/2003
6430987	Apparatus and method for measuring the concentration of a paramagnetic gas The object is to improve an apparatus for measuring the concentration of a paramagnetic gas in a gas sample, in such a way a measurement signal with a low noise ratio is obtained. The apparatus proposed according to the invention is characterized by a mod...	08/13/2002
6414093	Method and Apparatus for detecting agglomerates A protecting tube 51 is disposed inside the mixed phase container 1 with one end fixed to the inside of the mixed phase container 1 and the other end projecting freely into the mixed phase container 1. A detecting rod 60 is inserted into the free end of s...	07/02/2002
6405578	Magnetic oxygen analyzer A magnetic oxygen analyzer which employes a detector comprising a magnetic pole, heat generator arranged in a non-uniform magnetic field where the intensity of a magnetic field produced by the magnetic pole varies, and a magnetic wind sensor disposed to n...	06/18/2002
6389880	Zero shift compensation oxygen sensor A magnetic wind oxygen sensing device provides a local magnetic field defined by magnetic pole pieces, and employs a plurality of thermal elements in a bridge in the local magnetic field to measure oxygen concentration in a surrounding gas mixture, creati...	05/21/2002
6263722	Magnetomechanical gas analyzer, in particular paramagnetic oxygen analyzer A magnetomechanical gas analyzer such a paramagnetic oxygen analyzer which has a dumbbell which is rotatably suspended in the region of action of an inhomogeneous magnetic field and around which a gas to be measured flows. The dumbbell is connected, fixed...	07/24/2001
6246227	Sensor for measuring the magnetic characteristics of a gas A gas measurement cell has a measurement element suspended to oscillate about a suspension axis in a magnetic field. A coil which oscillates with the element may have electrical signals applied to it to initiate oscillation and also provides an output whe...	06/12/2001
6112576	Gas analyzer with background gas compensation A sensor responds to a magnetic wind produced by the magnetic susceptibility of a target component gas, such as oxygen, which is present together with a background gas in a sample located in a measurement field produced in a measurement device. A backgrou...	09/05/2000
5932794	Instrument for magnetic measurement of oxygen The invention relates to a micro-mechanical device for determining the oxygen content in a gas mixture or gas matrix including a dumbbell-shaped element having a base plate and two volumes of the gas to be measured arranged on opposing sides of a center p...	08/03/1999
5493215	Apparatus for measuring the proportion of paramagnetic substances in cancelling a mixture of substances and including a compensating device for cancelling an unwanted signal An apparatus for determining the paramagnetic characteristics of substances such as oxygen includes a cuvette rotating in a magnetic field. The cuvette includes measuring chambers and reference chambers and an alternating voltage is induced in the measuri...	02/20/1996
5391986	Apparatus for determining the proportion of a substance having paramagnetic properties in a mixture of substances The invention is directed to an apparatus for determining the component of paramagnetic substances such as oxygen. This determination is made with a magnetic field source and an even number arrangement of magnetic field cores, with each field core being s...	02/21/1995
5369980	Method and apparatus for the determination of the proportion of a paramagnetic gas in a gas mixture A method and apparatus for determining the proportion of a paramagnetic gas in a mixture of gases is disclosed. There is provided an element which is able to oscillate in a magnetic field. A force acting on the element due to the presence of paramagnetic ...	12/06/1994
5269170	Measuring system and process using zero shift compensation circuit A zero compensation circuit particularly is used in an oxygen sensing apparatus and method employing a sensing cell including two pairs thermistors and a source of an inhomogenous magnetic field. One thermistor of each pair is electrically heated and is p...	12/14/1993
5012669	Oxygen sensing method and apparatus Apparatus for measuring concentration of a paramagnetic gas in a gas mixture includes first and second magnet pole pieces positioned adjacent each other with a selected gap therebetween, for generating an inhomogeneous magnetic field. The pole pieces have...	05/07/1991
4988946	Paramagnetic gas measuring apparatus A gas testing apparatus comprising a body (13, 14) defining a chamber (7), means (2, 3) for creating a magnetic field within the chamber in a first direction, a test body (20), means (19) for mounting the test body (20) for rotation about an axis parallel...	01/29/1991
4985165	Material having a predeterminable magnetic susceptibility The invention is directed to a material having predeterminable magnetic suceptibility and this material is suitable for producing displacing bodies for oxygen measuring devices. The material is composed of a plastic mass as primary substance and binding a...	01/15/1991
4983913	Method and apparatus for measuring a gas by exploiting the paramagnetic properties of the gas A paramagnetic gas measuring device/instrument including an infrared radiator for irradiating diamagnetic members of the device and for creating a climate within a measuring chamber suitable to evaporate moisture from the members and a gas being analyzed....	01/08/1991
4950984	Apparatus for determining the proportion of a substance having paramagnetic properties in a mixture of substances The invention is directed to an apparatus for determining the proportion of substances having paramagnetic characteristics, such as oxygen, in a mixture of substances. The apparatus has a housing and the mixture of substances is passed along an arrangemen...	08/21/1990
4893495	Oxygen sensing method and apparatus Oxygen sensing apparatus and methods utilize a sensing cell including two pairs of electrically heated thermistors and a source of an inhomogeneous magnetic field. One thermistor of each pair is positioned inside the magnetic field, and the second thermis...	01/16/1990
4860574	Paramagnetic oxygen analyzer A closed loop-like measuring passage is provided with two openings at symmetrical positions, and a sample gas is introduced through on opening into the passage and discharged therefrom through the other opening. A bypass pipe is connected to the measuring...	08/29/1989
4808921	Paramagnetic gas analyzer using DC and AC magnetic fields Paramagnetic gas analyzer comprising an electromagnet with an almost closed ferromagnetic circuit and a gap, including a measuring chamber with inlet and outlet lines for the gas to be analyzed as well as a gas of known magnetic susceptibility where devic...	02/28/1989
4763509	Device for determining the concentration of substances having paramagnetic properties A device for the determination of the concentration of substances with paramagnetic properties, particularly oxygen, in substance mixtures comprises a cell assembly and devices to produce a magnetic field as well as to measure changes in the magnetic indu...	08/16/1988
4683426	Process and apparatus for measuring differences in the concentrations of paramagnetic components of gases Process and apparatus for measuring the difference in the concentration of paramagnetic components between an unknown gas and a standard gas by periodically alternate entry of both gases into the gap chamber (2) of a magnetic circuit (1) and by detecting ...	07/28/1987
4464926	Method and apparatus for sensing the presence of oxygen in a gas mixture A sensor for sensing the presence of oxygen in a test gas mixture comprises either first or second tubes for the separate flow of a measured gas and a gas to be tested for a single tubular arrangement for the successive flow of these two gases in associat...	08/14/1984
4432226	Method and apparatus for measuring gaseous oxygen An oxygen detection system including two equal and symmetrically constructed major DC magnetic circuits each having an air gap which is alternatively filled with a sample and a reference gas. A magnetic bridge arm connects the major magnetic circuits in s...	02/21/1984
4403186	Surface pressure measurement type magnetic analyzer for paramagnetic gases utilizing a magnetic field generated alternatively between plural pairs of magnetic pole pieces A magnetic analyzer is provided for detecting the concentration of a paramagnetic gas, such as oxygen, in a gas being tested. This detection is based on detecting the surface-pressure generated between a gas being tested and a comparison gas. The surface-...	09/06/1983
4173975	Magnetic means for determining partial pressure of oxygen particularly in underwater breathing apparatus A paramagnetic oxygen sensor wherein a reference chamber is oscillated into and out of an air gap of a magnetic circuit by means of a piezoelectric bender bar. The oscillating reference periodically displaces the ambient gas under measurement in the air g...	11/13/1979

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Class 73/25.02 - With magnetic property (e.g., paramagnetic gas)