Matches 1 - 50 out of 117 1 2 3 >
Match Document Document Title
7340966 Sensor with water ingress protection  
A gas monitoring system that comprises a sensor, a first valve, and a second valve. The sensor is disposed within a sensor housing that has an inlet and an outlet. The sensor generates a signal...
7257495 Flow meter filter system and method  
A flow meter filter system ( 200 ) according to an embodiment of the invention includes a noise pass filter ( 203 ) configured to receive a first version of a flow meter signal and filter out the...
7255012 Process fluid flow device with variable orifice  
A process device providing total fluid flow control is provided. The device includes a closure mechanism disposed in a flow conduit. The closure mechanism, which is preferably an iris-type...
7051765 Balanced orifice plate  
An orifice plate for use in a conduit through which fluid flows is defined by a central circular region having a radius R 0 and a ring-shaped region surrounding the central circular region. The...
6973833 Wafer and method  
A wafer for placement in a pipe. The wafer includes a housing having an outer surface and an orifice adapted to allow fluid flowing in the pipe to pass through the housing. The housing has at least...
6944530 System and method for air flow and EGR flow estimation  
An exhaust gas recirculation system directs exhaust gasses from an exhaust manifold to an intake manifold of an internal combustion engine. The exhaust gasses travel from the exhaust manifold,...
6938472 Static pressure calculation from dynamic pressure for rotary air-data system and methodology therefor  
A Rotary Air-data System (RADS) periodically samples pressure data from a main rotor blade mounted pitot-scoop integrated with a high accuracy pressure sensor to compute a velocity vector that is...
6871666 Bi-directional dual chamber orifice fitting  
Methods and apparatus for a bi-directional dual chamber orifice fitting comprising a body with a chamber in fluid communication with a flow bore. The fitting also comprises an orifice supported by...
6857324 Method and apparatus for measuring concentrations of components of fluid  
A method and an apparatus for measuring the concentrations of the components of a fluid are described, which can be used to measure the concentrations of the components continuously in real time...
6799477 Flow metering device for landfill gas extraction well  
A coupling having an integral orifice plate engages upstream and downstream segments of a landfill piping system. Upstream and downstream ports are respectively formed through the walls of the...
6755210 Mass flow controller  
The present invention provides a high-performance mass flow controller which is compact and lightweight, which has a flow path having a simple structure and which does not have dead space in which...
6732596 Critical gas flow measurement apparatus and method  
A gas mass flow meter includes an elongated channel extending through a high thermal mass body and a critical flow nozzle in a downstream portion of the channel. A heat exchanger is provided...
6681189 Method and system for determining flow rates and/or fluid density in single and multiple-phase flows utilizing discharge coefficient relationships  
According to one embodiment of the invention, a computerized method for determining a flow rate of a fluid flowing through a conduit having an obstruction flow meter includes receiving a β ratio...
6659095 Diagnosis system for upstream gauge sensor, downstream absolute pressure sensor  
A method for controlling an engine during sensor degradation uses a remaining active sensor. The engine has an exhaust gas recirculation system utilizing pressure sensors upstream and downstream of...
6659091 Method for compensating for abnormal changes in the gas flow passing through an exhaust gas recirculation line of an internal combustion engine  
The goal is to reliably diagnose and compensate for a change in the gas flow passing through an exhaust gas recirculation line. For this purpose, according to a first method, the mass flow passing...
6655207 Flow rate module and integrated flow restrictor  
An integrated module is provided for measuring a flow rate of a fluid, whether gaseous or liquid, with a flow restrictor comprising a plurality of orifices adapted to a flow channel of the...
6543297 Process flow plate with temperature measurement feature  
A differential flow plate insertable into a flow path including a flow interrupter extending about an outer periphery of the flow path forming a constricted flow opening and a temperature sensor...
6510747 Flow control device  
Semi-spherical supports are used in the piercing of small, consistently sized holes in a soft metal. In particular, a flow control device, such as an orifice plate, can be fabricated with small,...
6450875 Monitoring air entry velocity into fume hood  
A housing of a fume hood includes walls defining a chamber for containment of air therein. One of the walls defines an air passageway opening into the chamber, and a sensor is located outside of...
6446513 High accuracy flow restrictor using crystal  
A flow meter for use in a flow stream with a tubular housing, including a fluid inlet and a fluid outlet, in the flow stream, with the inlet pressure exceeding the outlet pressure. The interior has...
6324917 Combination air pipe connector and flow measurement device  
An air flow measurement device includes a connector conduit with a constant inner diameter wall for the air flow, a transverse restrictor plate located within the conduit with a plurality of...
6308694 Flow measurement and control  
An exhaust gas recirculation systems directs exhaust gasses from an exhaust manifold to an intake manifold of an internal combustion engine. The exhaust gasses travel from the exhaust manifold,...
6164142 Air flow measurement device  
An air flow measurement device includes a connector conduit for the air flow having a transverse restrictor plate located therein with a plurality of uniform and uniformly spaced apertures...
6101885 Substitution kits for volumetric flow sensors and corresponding vortex flow sensors  
These substitution kits are provided for field-installed volumetric differential pressure flow sensors (101, 102, 103, 104, 105, 106) comprising bores (111, 121) for sensing the fluid pressure and...
6053056 Orifice plate for metering the flow of a medium  
Semi-spherical supports are used in the piercing of small, consistently sized holes in a soft metal. In particular, an orifice plate can be fabricated with small, consistently sized flow apertures...
5898108 Evaporative emission tester  
An evaporative emission tester is used to evaluate the integrity of a vehicle's evaporative emission control system, including determining the system's purge capability. The emission tester...
5886267 System and method for bidirectional flow and controlling fluid flow in a conduit  
A system for measuring bidirectional flow, including backflow, of fluid in a conduit. The system utilizes a structural mechanism to create a pressure differential in the conduit. Pressure sensors...
5808188 Flowbench and air flow measurement and calibration procedure  
A pneumatic system for comparing air flow characteristics of different unknown flow restrictions. The first head or piece of equipment and a base orifice are installed in turn on the flowbench and...
5792966 Thermally stable, fluid flow measurement device  
A fluid flow measurement device utilizing an orifice element (18) with a low coefficient of thermal expansion, allowing for accurate measurements over a wide temperature range. The orifice element...
5613479 Pressure feedback exhaust gas recirculation system  
A pressure feedback EGR system including an EGR tube having a metering orifice therein and extending between an exhaust passageway and an intake passageway of the internal combustion engine, a...
5546990 Method of measuring flow through a fitting with an orifice plate for reducing eccentricity  
An orifice installation for centering the center of a plate carrying device within a fitting is disclosed. The plate carrying device has a centering opening at its base which interacts with a stop...
5483838 Fluid flow connector and gauge assembly  
A connector and gauge assembly for measuring liquid pressure and flow rate has an axially elongated integral tubular body with an externally threaded male end and an opposite female end. The...
5474103 Safety guard for orifice fitting device  
A safety guard or lockout device (22) for a dual chamber orifice fitting device (1) having a removable orifice plate (4). In a normal position when the upper and lower chambers (8, 9) are equal in...
5469750 Method and apparatus for sensing flow in two directions and automatic calibration thereof  
A method of calibrating the output of a transducer in a flow path through which a medication is delivered from a hand-held metered dose inhaler is disclosed. The transducer senses flow rates of...
5464036 Orifice fitting with venting passage and injection seal  
An orifice fitting for measuring the flow of gas through a pipeline in which the orifice fitting has a body including a pair of opposing body plates that define a body chamber. Passing through both...
5461932 Slotted orifice flowmeter  
A flow impedance device is provided for an obstruction flowmeter for determining the flow rate of a compressible or incompressible fluid in a conduit. The flowmeter preferably includes means for...
5461912 Accurate method of measure tray pressure drop to determine liquid flow in flue gas desulfurization systems  
A method for measuring a pressure drop at a component within a flue gas desulfurization vessel caused by a gas flow includes locating a plurality of taps near the component to be measured in order...
5458006 Gas-metering device  
A metering pipe is telescoped, at least partially, within a pipe through which gas flow rate is to be measured. Gas flow is routed through the metering pipe and is measured by means of pressure...
5456288 Simplex orifice fitting with self-centering plate carrier  
The simplex orifice fitting includes a housing having a longitudinal bore therethrough and a plate carrier slot intersecting with the longitudinal bore. A plate carrier, having a circular bore, is...
5426975 Method and apparatus for determining the total flow rate in a ventilation installation  
A method and apparatus for determining the total flow rate of air flowing through a ventilation installation with a free suction fan (15) is described. The flow rate or a corresponding pressure is...
5419372 Orifice system mounting assembly  
An orifice installation for centering the center of a plate carrying device within a fitting is disclosed. The plate carrying device has a centering opening at its base which interacts with a stop...
5410909 Plug proof simple device to measure liquid flow in flue gas desulfurization systems using nozzle pressure as an input  
An arrangement for measuring a liquid flow through a liquid spray nozzle which provides liquid from a header in a flue gas desulfurization system includes a spool having an outlet and connected to...
5325727 Apparatus and method for measuring the mass flow rate of liquid from a vessel  
The method and apparatus of this invention is related to measuring a flow rate of a liquid having a density ρ from a vessel having an inner cavity and a pouring channel. A flow sensor introduces a...
5201322 Device for detecting air flow through a passageway  
A device is disclosed for detecting the presence and direction of air flow through a passageway having a first opening and a second opening for air to flow therethrough in either a first direction...
5154513 Method for determining the temperature of a flow of medium  
In order to improve a method for determining the quickly changing, average temperature of a flow of compressible medium such that it is possible to ascertain sudden changes in temperature...
5134890 Fluid flow monitoring device  
A flow sensing apparatus has an obstruction extending across the tube to form two openings. The obstruction is at an angle to the tube axis and includes a portion with reduced dimension. Pressure...
5086655 Orifice measuring device  
The invention relates to a plate orifice for a or in a measuring device for he flow metering of fluid streams, in particular gas streams, preferably for gas streams present in internal combustion...
4986135 Apparatus and method for measuring fluid flow and density  
The invention utilizes a conduit, having an input, an output, and a central region therebetween, in conjunction with a nozzle having an inlet, a restricted outlet and a thin-wall throughput region,...
4986127 Multi-functional sensor  
Multi-functional sensor comprises a support base made from borosilicate, a diaphragm with a E-shaped section secured to the base, the diaphragm being made from single crystalline silicon, principal...
4972180 Apparatus for determining rate of discharge from nozzle for spraying aqueous solution of hydrogen peroxide  
An apparatus for determining the rate of discharge from a nozzle for spraying an aqueous solution of hydrogen peroxide comprises a pressure sensor for detecting the internal pressure of a pipe for...
Matches 1 - 50 out of 117 1 2 3 >