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8855946 |
Method for avoiding jump faulty measurements and improving accuracy in hybrid flow meters
A method measures a hybrid flow rate (Q) of a fluid using simultaneously at least two measuring technologies and a reference measurement, the method includes a hybrid value, wherein the... |
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8337476 |
Real time urine monitoring system
A disposable real-time closed catheter urine output monitoring system. The monitoring system of the invention can measure urine outputs at both high and low urine flow in real time, using a... |
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8305231 |
Gas appliance monitoring apparatus
A gas appliance monitoring apparatus includes a flow rate measurement unit for measuring the gas flow rate, a gas shut-off valve for shutting off a gas flow path at the abnormal time, an... |
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8056409 |
Hybrid flowmeter that includes an integral vortex flowmeter and a differential flow meter
A new flowmeter which comprises a DP flowmeter and a volume meter in series or in hybrid integrated form. The combination of the readings from the two gives increased metering capabilities. |
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7962576 |
Quantity conversion interface for external program calls
The application is directed to methods, systems, procedures, networks and storage apparatus used to conduct conversions of data using remote conversion servers. In one embodiment of the present... |
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7357023 |
Modular inserts comprising check valves for flow meters
The present invention relates to an apparatus and method for upgrading fluid meters with improved modular check valve technology. The check valve module is secured within the meter using only... |
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7266467 |
Method to calibrate hydraulic flow valves in situ
A method for performing system characterization in situ for a system comprising a actuator controlled by a proportional controller. The system includes a quasi-linear region characterized by a... |
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6959609 |
Inferential densometer and mass flowmeter
A system for measuring the density and mass flow rate of a fluid stream. The system generally comprises a volumetric flow device, a momentum device, and a data processing device. The present... |
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6926584 |
Dual mode hybrid control and method for CMP slurry
A DMHC (dual mode hybrid control) system and method which facilitates enhanced control in the delivery of polishing slurry to a CMP (chemical mechanical polishing) apparatus. The DMHC comprises a... |
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6895813 |
Low-flow extension for flow measurement device
A method and apparatus for measuring flow rates is disclosed. At least one of a non-vortex based low-flow measurement and a vortex based flow measurement is taken. The measurement or measurements... |
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6860286 |
Water supply system for multiple dwelling units
A water supply system for an apartment complex can include individual hot water conduits and cold water conduits for each apartment. Each conduit includes a water meter that enables the owner of... |
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6721674 |
Method and apparatus for in-situ calibration of quantity measurement of a fluid flowing in a channel
A method and apparatus for in-situ calibration of quantity measurement of a fluid flowing in a channel, in which a device for measuring the volume of the fluid is disconnected from the fluid flow,... |
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6637263 |
Flow divider
The invention relates to a flow divider and a process for dividing a fluid flow into a number of fluid flows, in particular in analytical and/or preparative fluid measurement technology and/or in... |
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6581457 |
Compound fluid meter with flow distributor
A compound meter assembly (10) has a housing (15, 17, 19), a high volume flow meter (14) disposed in a main flow passageway (22) for detecting a flow rate of relatively higher volume flows and a... |
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6446503 |
Flow velocity measuring apparatus and methods using sensors for measuring larger and smaller flow quantities
A flowmeter capable of measuring an accurate quantity of flow over a wide range of the quantity of flow. A measurement zone (15) for smaller quantity of flow and a measurement zone (16) for larger... |
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6339963 |
Fluid flow measurement device
A device for measuring fluid flow rates has a body defining a conduit for the fluid, the body having selectable first and second configurations, in the first configuration the body presents a... |
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6079263 |
Compound water meter having impeller rotatably supported between main meter measuring and switch-over valve insets
A compound water meter includes a housing having opposite inlet and outlet ends, a water guidance channel extending between the inlet and outlet ends and defining a direction of flow therebetween... |
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6081196 |
Apparatus and method for multipurpose residential water flow fire alarm
A multipurpose residential plumbing and fire sprinkler system or, more simply, a multipurpose piping system ("MPS") is a system for providing water to both domestic uses (e.g., showers, sinks,... |
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6026682 |
Coolant safety system for automated welding apparatus
In an automated welding machine, where a flow of liquid coolant is supplied to welding components on the machine from a source of coolant and then returned to the source of coolant, a safety... |
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6026838 |
Method for detecting opening in fluid flow passageway and shutting off flow in response thereto
An apparatus detects an opening in a fluid flow passageway such as occurs when a resistance welding cap which is cooled by the fluid flow becomes accidently detached from a welding machine. Upon... |
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5950667 |
Apparatus for detecting opening in fluid flow passageway and shutting off flow in response thereto
An apparatus detects an opening in a fluid flow passageway such as occurs when a resistance welding cap which is cooled by the fluid flow becomes accidently detached from a welding machine. Upon... |
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5869758 |
Method and apparatus for measuring the flow rate of a medium flow
The flow rate of a medium flowing through a channel is measured by using a number of measurement sites along which the medium flows continuously at different velocities. The heating of the medium... |
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5831158 |
Combination water meter
A combination water meter comprises a main meter which can be connected to a water main for determining larger amounts of water flow and to an auxiliary meter which is disposed in a bypass conduit... |
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5811676 |
Multiple fluid meter assembly
A fluid meter assembly in which a housing is provided that has two enclosures formed therein. At least one cylinder is formed in each enclosure and receives a piston. Fluid is admitted into each... |
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5811674 |
Coolant safety system for welding apparatus
In an automated welding machine, where a flow of liquid coolant is supplied to welding components on the machine from a source of coolant and then returned to the source of coolant, a safety... |
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5698781 |
Fire service meter
A fire service meter that includes a strainer, a high flow water meter, a low flow water meter and a check valve fluidly coupled together. The check valve includes a sealing member or clapper... |
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5648605 |
Flowmeter calibration method
A flowmeter calibration method includes disposing a flowmeter on a standard flowpath, disposing a flowmeter on each of a plurality of branch flowpaths in communication with the standard flowpath,... |
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5576486 |
Electronic flowmeter system with a stopper against undesirable flows, leak detector and bypass for measuring low flows
An electronic liquid flow measuring system has a power source, a main electronic flow meter and a secondary liquid low flow electronic meter connected to bypass the main meter. A microprocessor... |
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5517855 |
Combined water meter
An automatically acting switch valve for a combined water meter which has a main meter for measuring larger flows and a secondary meter for measuring smaller flows. The switch valve has a switch... |
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5257537 |
Self actuating throttle valve
A self-actuating throttle valve for use with fluid measurement apparatus such as a water meter. The valve includes a cylindrical body disposed within the outlet of the fluid measuring apparatus,... |
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5117856 |
Flow range extending valve
A valve arrangement for use in measuring a wide range of gas flow rates, comprises a valve housing including one inlet for a gas flow and two outlets, one for a low flow rate and the other for... |
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5090240 |
Flowmeters
A bypass flowmeter assembly has a plurality of branch pipes (11) connected in parallel with a main pipe (10), with at least one of the branch pipes having a respective flowmeter (14), and at least... |
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5088322 |
Extended range flow meter
This invention concerns an extended range flow meter and method of providing continuous metering of fluid flow utilizing of two or more flow meters by the more accurate flow meter or combination... |
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5085076 |
Integrated water strainer, meter, and crossover check valve
A water strainer, water meter, and crossover check valve structurally and functionally integrated within a single housing having a single access port. A water strainer, including a screened... |
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5000041 |
Control apparatus for turbine-type flow meter
Disclosed is a control apparatus for correcting the measurement of flow rates for use with a turbine-type flow meter in which the rotation of a turbine rotating in response to the flow velocity of... |
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4896539 |
Spray calibration device and method
A device for determining a flow rate of liquid discharged from a plurality of discharges comprising a plurality of collectors for the discharged liquid connected by a manifold having a plurality... |
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4653321 |
Method of automatically measuring fluid flow rates
A method comprises providing at least two fluid flow channels of different sizes wherein each contain a temperature sensitive resistance fluid flow sensor. An electronic controller is provided... |
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4610162 |
Fluidic flowmeter
A fluidic flowmeter comprising a combination of an upstream fluidic element and a downstream fluidic element. One of the fluidic elements includes a jet nozzle having a smaller opening area than a... |
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4565098 |
Hybrid sensing system for vortex flowmeter
A hybrid sensing system for a vortex-type flowmeter in which fluidic oscillations are generated at a frequency depending on the flow rate of the fluid being metered, the flowmeter being operative... |
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4463601 |
Method and apparatus for measuring mass airflow
Where airflow through a system is subject to forward and reverse flow, the mass airflow rate is determined by providing two flow branches A and B meeting at a junction wherein the two branches... |
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4459860 |
Flow sensor with extended low flow range
In a flow sensing device in which flow is measured by the linear displacement of a moveable bobbin within a throat, the bobbin contains a cylinder and piston arrangement, with the piston linked to... |
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4437344 |
Compound liquid flow meter with fast crossover characteristic
This compound flow meter includes a high capacity meter and a low capacity meter connected in parallel with it. The flow through the high capacity meter is controlled by a main valve subject to... |
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4429571 |
Compound liquid flow meter
A compound liquid flow meter comprised of a main flow path incorporating a turbine meter (2,36) and a downstream valve (3,24), and a parallel auxiliary low flow path incorporating a relatively... |
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4386520 |
Flow rate measuring apparatus
A change in the amplitude of the output of a vortex sensor is sensed. When the change exceeds a predetermined value in the region of high engine load, the coefficient of smoothing applied to the... |
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4217929 |
Flow control composite valve
A compound meter assembly is provided having primary and secondary passageways housing a high flow rate meter and a low flow rate meter, respectively. A composite flow responsive first valve is... |
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4175434 |
Compound meter assembly
A compound meter assembly is provided having primary and secondary passageways housing a high flow rate meter and a low flow rate meter, respectively. A flow responsive first valve is disposed... |
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4142407 |
Air flow metering apparatus for internal combustion engines
An air flow metering apparatus for measuring a suction air flow fed to an internal combustion engine comprises at least two Karman' vortex type air flow meters disposed separately in at least two... |
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4111043 |
Turbine flowmeter
A turbine wheel is insertable in a line to intercept fluid flowing therethrough. A pickup coil senses the rotation of the turbine wheel. Responsive to the pickup coil when the rotational speed of... |
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4100800 |
Flow control assemblies
A compound meter assembly is provided having primary and secondary passageways housing a high flow rate meter and a low flow rate meter, respectively. A composite flow responsive first valve is... |
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4100799 |
Compound meter assembly
A compound meter assembly is provided having primary and secondary passageways housing a high flow rate meter and a low flow rate meter, respectively. A flow responsive first valve is disposed... |