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| Number | Title | Issue Date |
| 7399118 | Thermal gas flowmeter comprising a gas quality indicator The invention relates to a method and a device for measuring a gas consumption by means of a gas meter. A gas meter with thermal mass flow sensor for determining mass flow signals (SM) and with a calibration as energy meter for outputting energy value sig... | 07/15/2008 |
| 7275862 | Differential scanning calorimeter with a second heater A differential scanning calorimeter has a heat sink for accommodating therein a measurement sample and a reference material, and a differential heat flow detector that detects a temperature difference between the sample and the reference material. A cooling mechanis... | 10/02/2007 |
| 7246938 | Apparatus and method for measuring the heating value of gases A heating value meter for gases has an outer cylindrical mantle with an outer thermostatic heating apparatus and at least one inlet for introduction of air and at least one inlet for introduction of test or calibration gas. The outer mantle has an outer heating mant... | 07/24/2007 |
| 7180039 | Heater with burnout protection A heater is provided that has a temperature sensing control system which can be used for both temperature control and over-temperature protection against element burnout. The temperature control system is comprised of an inlet temperature sensing assembly positioned... | 02/20/2007 |
| 7089747 | Pressure reduction apparatus and method A pressure reduction apparatus is disclosed. Air at high pressure and temperature may be drawn from a source such as a bleed valve of a gas turbine engine that supplies the air to an airplane interior. The air is passed to a pressure reduction vessel. The vessel has... | 08/15/2006 |
| 7091509 | Method for determining at least one energetic property of a gas fuel mixture by measuring physical properties of the gas mixture The present invention relates to a method of determining at least one energy property of a gaseous mixture which consists in: 1. measuring, on said gaseous mixture, n physical properties φi at a temperature T and/or one physical property φ | 08/15/2006 |
| 7082826 | Gas flow meter and method for measuring gas flow rate A gas flow rate meter includes an upstream line and two chambers having substantially equal, fixed volumes. An adjustable valve may direct the gas flow through the upstream line to either of the two chambers. A pressure monitoring device may be configured to prompt ... | 08/01/2006 |
| 7079010 | System and method for monitoring processes of an information technology system A system and method are provided for monitoring processes of an information technology (IT) system. In one example, the system comprises a monitor agent configured to collect performance and availability metrics associated with a host machine, a network, an operatin... | 07/18/2006 |
| 7048434 | Thermal analysis and characterization of layers and multiple layer structures Thermally analysis of layers and multiple layer structures used in the semiconductor processing arts is disclosed. A modulated calorimetric analysis may be used to determine a thermal signature that characterizes the chemical properties of a sample of material. The ... | 05/23/2006 |
| 6977179 | Method and apparatus for measuring the heating value of a single or multi-component fuel gas A method for determining the heating value of a fuel gas or fuel gas mixture in which the chemiluminescense intensity of at least one chemical bond in a known volume of the fuel gas or mixture is measured. Based upon the results of the measurement(s), the amount of ... | 12/20/2005 |
| 6974934 | Remote reference resistor An apparatus including a reference resistor for use with ratiometric temperature sensing of a device to be sensed. The resistive element has a resistance dependant upon a temperature of the device to be sensed and is electrically coupled to a reference resistor. The... | 12/13/2005 |
| 6955650 | Metabolic calorimeter employing respiratory gas analysis An indirect calorimeter for measuring the metabolic rate of a subject includes a respiratory connector configured to be supported in contact with the subject so as to pass inhaled and exhaled gases as the subject breathes, a flow pathway, and a hygiene barrier posit... | 10/18/2005 |
| 6939001 | Mechanism for passing rigid medium under image-forming mechanism An embodiment of the invention is disclosed that relates to a mechanism for passing a rigid medium under an image-forming mechanism. The mechanism includes a conveyor belt and a number of rollers. The rigid medium travels on the conveyor belt under the image-forming... | 09/06/2005 |
| 6551094 | Method and device for determining a soot charge in a combustion chamber A method for determining a soot charge in a combustion chamber includes measuring a spatial distribution of at least one parameter characteristic of a combustion by monitoring a flame in the combustion chamber. The at least one parameter allows a conclusi... | 04/22/2003 |
| 6536946 | Device and method for directly measuring calorific energy contained in a fuel gas The invention concerns a device (10) for measuring calorific energy contained in a fuel gas transported in a pipe (16) comprising a gas meter (12) measuring a volume V in pressure conditions P and temperature conditions T of a gas circulating in said pipe... | 03/25/2003 |
| 6517237 | Measuring energy consumption An energy meter which measures a volume of gas supplied, which measures a calorific value of the gas supplied, and which calculates an energy value corresponding to the measured volume of gas supplied and the calorific value. The structure to measure the ... | 02/11/2003 |
| 6490908 | Method and device for determining the gas properties of a combustible gas The invention relates to a method and a device to determine the gas properties of combustible gas, in particular of natural gas, wherein a) at least part of the combustible gas is exposed to infrared radiation and the amount of infrared radiation absorbed by t... | 12/10/2002 |
| 6464391 | Heat release rate calorimeter for milligram samples A calorimeter that measures heat release rates of very small samples (on the order of one to 10 milligrams) without the need to separately and simultaneously measure the mass loss rate of the sample and the heat of combustion of the fuel gases produced du... | 10/15/2002 |
| 6442996 | Method and apparatus for measuring the calorific value of a gas A method and apparatus for measuring the calorific value of a gas. The apparatus includes a chamber to which a gas in question, for example natural gas, is supplied through an inlet and leaves through an outlet. The speed of sound SoS at ambient temperatu... | 09/03/2002 |
| 6371147 | Evaluation and regulation of the thermal power of a flow of combustible gas; characterization of a thermal mass flowmeter The subject of the present invention is: processes for the evaluation and the regulation, to a value P0, of the net (or gross) thermal power P of a flow of a combustible gas CG of composition close to that of a reference gas, said flow of gas passin... | 04/16/2002 |
| 6342186 | Ceramic liner for closed bomb applications Ceramic liners for use with closed bomb devices are disclosed. The closed bomb devices measure performance properties of energetic materials, such as solid propellant, explosive, and pyrotechnic formulations. The closed bomb devices include a body and a c... | 01/29/2002 |
| 6312154 | Method for on-line measurement of fuel heat content of fuel in a combustion turbine system The fuel heat content of fuel is measured on-line while a combustion turbine system is running by measuring data from the combustion turbine system during combustion of the fuel. The measured data are corrected using a standard correction algorithm. The f... | 11/06/2001 |
| 6244097 | Method for measuring without combustion the heat value of fuel gas The fuel gas or a substream of the fuel gas is passed through a volumetric flowmeter and the volumetric gas flow is measured. In addition, the pressure, temperature and the proportion of at least one inert gas as well as the density and the dielectric con... | 06/12/2001 |
| 5882115 | Measuring heating value of a gas using flameless combustion The heating value of a sample gas is calculated by a microcontroller (12) from the heating value of a reference gas, and from flow ratios and power levels determined as the gas is combusted by a flameless combustion process. The combustible gas is mixed w... | 03/16/1999 |
| 5820260 | Measuring heating value using predetermined volumes in non-catialytic combustion The heating value of a sample gas is calculated by a microcontroller (12) from the heating value of a reference gas, and from an oxidation energy ratio determined as the gas is combusted by a flameless combustion process. The combustible gas is mixed with... | 10/13/1998 |
| 5816705 | Measuring heating value of a gas using flameless combustion The heating value of a sample gas is calculated by a microcontroller (12) from the heating value of a reference gas, and from flow ratios and power levels determined as the gas is combusted by a flameless combustion process. The combustible gas is mixed w... | 10/06/1998 |
| 5807749 | Method for determining the calorific value of a gas and/or the Wobbe index of a natural gas A method and apparatus for determining the calorific value of a combustible gas including passing an amount of gas through a hydrocarbon detection device comprising interconnected first and second measuring cells, the first measuring cell including a cata... | 09/15/1998 |
| 5779362 | Apparatus and method of determining a characteristic related to the thermal power of a sample A calorimeter is disclosed comprising a sample chamber (12) adapted to enclose a sample, a thermally conductive reference surface (14) surrounding and insulated from the sample chamber (12) and a casing (16) surrounding and insulated from the reference su... | 07/14/1998 |
| 5707150 | Apparatus for computing BTU content in a sample of gas An apparatus for measuring the BTU content of a gas includes a source of combustion air, a detector and a sample loop or tube connected to a six-port switching valve. The switching valve allows accurate and repeatable quantities of the gas to be obtained ... | 01/13/1998 |
| 5635626 | Measurement of a gas characteristic Apparatus to measure the calorific value and/or the Wobbe index of fuel gas supplied along a pipe. A control can operate two outlet valves and cause an inlet valve to be locked in a closed position or be unlocked to stay in a normally open state until the... | 06/03/1997 |
| 5551282 | Method and apparatus for measuring volume correction using molar quantities A method and apparatus for measuring volume correction in a gas pipeline using a variable volume chamber where the gas is sampled at the temperature and pressure of gas in the pipeline. A portion of a known volume of sample gas is released and a change of... | 09/03/1996 |
| 5547282 | Calorimetric measuring apparatus A calorimetric measuring apparatus is provided with a decomposition vessel whose interior is configured as a reaction chamber and which can be tightly sealed, the decomposition vessel being removably arranged inside a jacket, and having at least one tempe... | 08/20/1996 |
| 5482679 | Device for determining the Wobbe index of a gas mixture Device for determining the Wobbe index of a first gas mixture, including a Wobbe index meter having a mixing chamber, and a feed system for supplying a first gas mixture and an oxidation gas to the mixing chamber of the Wobbe index meter. The feed system ... | 01/09/1996 |
| 5423609 | Method and apparatus for determining the heat of combustion of a material based on the height of a diffusional flame within which the material is burned An apparatus and method are provided for determining the heat of combustion of a material. The apparatus comprises a burner capable of producing a diffusional flame; a device for conveying a sample of the material to the burner, so that the sample is burn... | 06/13/1995 |
| 5360266 | Control and analysis circuit device for measuring reaction heat The reaction heat sensor and control and analysis devices for measuring the concentration of reactive species in a medium includes a temperature dependent measuring resistor and a reference resistor connected in series. Both resistors, which are supplied ... | 11/01/1994 |
| 5357809 | Volumetric flow corrector having a densitometer A method an apparatus for measuring a base condition volumetric flowrate of a pipeline gas flowing through a pipeline in which a pipeline gas flowrate is measured by a pipeline gas flowmeter; a volumetric correction ratio is derived by: measuring a sample... | 10/25/1994 |
| 5323657 | Volumetric flow corrector and method A method and apparatus for measuring a base condition volumetric flowrate of a pipeline gas flowing through a pipeline in which a pipeline gas flowrate is measured by a pipeline gas flowmeter that responds to density in a characteristic manner, a sample g... | 06/28/1994 |
| 5288149 | Gas calorimeter and wobbe index meter Apparatus for measuring the combustion characteristics of a gaseous fuel. Wobbe index and calorific value are measured with a fast response time by maintaining a stoichiometric mixture in a mixer supplied with the gaseous fuel at a constant pressure toget... | 02/22/1994 |
| 5235844 | Multiple gas property sensor Transducer apparatus and related method are described for substantially simultaneously determining pressure and one other property (or property combination) of a flowing gas of varying pressure and composition. The technique utilizes several empirical alg... | 08/17/1993 |
| 5226728 | Method and apparatus for measuring mass flow and energy content using a differential pressure meter A method and apparatus for monitoring in real time the mass and energy flow rate of a gas through a pipeline. The invention determines the ratio of the mass flow rate of pipeline gas flowing through a pipeline compared to the mass flow rate of sample gas ... | 07/13/1993 |
