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Document Title |
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7552614 |
System and method for determining functionality or accuracy of a sensor
A system and method for determining functionality and accuracy of a sensor such that monitoring of a sensor is possible without the provision of redundant sensors. Briefly described, one embodiment...
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7461537 |
Device and method for calibration of a mass flow sensor
A device and method for calibration of a mass flow sensor ( 14 ) employs a flow channel and a holder for the mass flow sensor in the flow channel. An adjustable throttle device is provided between...
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7458394 |
Methods and apparatus for mechanically adjusting a null offset in a torque motor of a servovalve
A servovalve assembly includes a motor having a flapper shaft. A flapper couples to a first end of the flapper shaft such that the flapper shaft orients the flapper between a first nozzle and a...
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7249486 |
Method for monitoring a sensor
The present invention concerns a method of monitoring a sensor for sensing the flow speed of a medium. The invention further concerns an apparatus for carrying out that method. In order to be able...
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6886534 |
Method for limiting the maximum injection pressure of magnet-controlled, cam-driven injection components
A method for limiting the maximum allowable operating pressure at a cam-driven injection component, which component is actuatable by a magnet valve assembly. After assembly a magnet valve it is...
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6595040 |
Test leak unit
A test leak unit ( 1 ) includes a supply of test gas, preferably helium, and an element ( 14 ) for determining leakage rates. The aim of the invention is to create a simple, robust and easily...
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6470281 |
Method and apparatus for measuring a throttle point
In a process and a device for measuring a throttle point, a fluid under pressure is applied to the throttle point by a pump, at least one operating parameter of the pump is acquired and stored, at...
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6425281 |
Pressure insensitive gas control system
A pressure insensitive gas process device that includes a gas sensor and restrictions upstream and downstream of the gas sensor. The restrictions result in pressure drops upstream and downstream of...
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6401525 |
Leak detection in liquid carrying conduits
A drogue capable of being inserted into a water pipe and comprising a flexible bar in which are a pressure sensor, a battery pack, an electronics assembly and a magnetometer. The bar is surrounded...
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5894080 |
Use of a sampling apparatus for calibrating electronic mass/flow fraction meters in a pipeline
In order to eliminate heavy and expensive test separators on board offshore platforms, the invention proposes to use a sampling apparatus, which is designed, shaped and adapted to take fluid...
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5554805 |
Flowmeter with a variable constriction
A flowmeter with a main conduit having a constriction formed therein through which a main flow passes, and a by-pass conduit which is in fluid connection with the main conduit upstream and...
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5400639 |
Carrier for mass air flow production line
A carrier for the assembly, test and calibration of a mass air flow sensor on a production line. The support carrier consists of a structure having a well for receiving a first portion of the...
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5315859 |
Custom flow restrictor
A set of selectable custom water flow restrictors is provided to limit water flow to a predetermined selected gallons-per-minute rate. The restrictor is inserted in-line upstream of the faucet,...
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5259234 |
Calibration system for air metering bellmouths
The present invention provides a system, including apparatus and method, using a National Bureau of Standards (NBS) traceable laser velocimeter for in situ calibration of a traversing static...
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5113705 |
Functional testing of solenoid valves in air
A solenoid valve that is to be used to control flow of a liquid medium is tested in a test fixture which applies a leak test, a flow test, and a response test using a gas as a test medium. The test...
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5107441 |
System for evaluating the flow performance characteristics of a device
A system for determining the flow performance of a valve by first measuring certain flow parameters of the valve with the stem fixed in a plurality of different positions between full open and full...
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4879662 |
Fluid flow self calibration scheme
A fluid system for calibrating a variable area metering valve during flight when the fluid receiver is not in operation employs several single point fixed calibration orifices that are sequentially...
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4838483 |
Vav valve control with transducer tolerance compensation
The variable opening of a pressure independent supply air valve for a building ventilation system is controlled in response to a standard airflow transducer whose output is modified to emulate a...
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4729236 |
Automatic orifice calibrator
An orifice is calibrated by passing air through the orifice and into a tube arrying a water column. The rate at which the water in the water column falls due to the passage of air through the...
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4591093 |
Calibration apparatus for air flow controllers
The present invention calibrates air flow controllers by simulating pneumatic signals present in typical heating, ventilating and cooling systems. The controllers receive pneumatic status signals...
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4515012 |
Valve testing system utilizing an artificial atmosphere
A test system for rapid and accurate testing of valves, especially delay valves for automotive applications, includes both an apparatus and test method. This test apparatus utilizes a reference...
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4502318 |
Method and apparatus for calibrating flow meters
The specification discloses a method and apparatus for calibrating liquid flow meters of all types. The system includes a scale for dynamically determining the weight of a liquid flowing through a...
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4432230 |
Method and apparatus for calibrating pumps
A method and apparatus are disclosed for calibrating the flow rate of a pump. The apparatus includes a high pressure pump, a critical flow orifice and a receptacle or air bag. The high pressure...
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4419898 |
Method and apparatus for determining the mass flow of a fluid
A method of determining the mass flow of a fluid comprising measuring a plurality of parameters comprising the pressure P, the temperature T and the density ρ of the fluid, determining the...
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4366947 |
Calibrated gas-metering apparatus
A calibrated gas-metering valve is disclosed which includes a two-part valve body having a gas inlet, a gas outlet, and a metering element therebetween. The metering element has a first and a...
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4203316 |
Device and method for calibrating pulmonary function testing equipment
A device and method for calibrating pulmonary function testing equipment by discharging a precise volume of compressed gas at reproducible and substantially exponentially diminishing flow rates...
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4194386 |
Variable area metering tube and method of manufacture
A variable area metering tube is described having a non-linear graduated measuring scale wherein the scale compensates for non-standard variations in the cross-sectional flow area of the metering...
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4142401 |
Gage
A gage for measuring the width of a gap. The gage includes a gaging conduit with an inlet and an outlet. Pressure means supplies gas to the inlet. A hot-wire anemometer is placed in the gaging...
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4096746 |
Flow controller-flow sensor assembly for gas chromatographs and the like
There is disclosed a flow controller-flow sensor combination especiably suited for gas chromatograph applications wherein a transducer monitors the pressure at the inlet and outlet of a flow...
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4027523 |
Methods and apparatus for proof testing gas meters
There is disclosed herein methods and apparatus for proof testing fluid meters, particularly gas meters of the positive displacement, diaphragm-operated type in which the number of cycles of...
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3994153 |
Variable flow resistance calibrator
The calibrator device is used for calibrating the flow indicator (rotometer) of an air pollution sampling instrument known as a high volume air sampler which determines the concentration of the...
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3910113 |
Method of selectively varying the differential output and overall performance characteristics of a proportional differential pressure producing fluid flow device
In the conduit of a fluid or gas flow system at least one pressure sensing form extends inwardly from the wall of the conduit to produce a selected predetermined differential pressure output and...
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3726296 |
FLUIDIC CONTROL SYSTEM AND METHOD FOR CALIBRATING SAME
A source of a fluid at a constant pressure is coupled to a manifold and the manifold is coupled to a receiver of the fluid at a constant pressure lower than the source pressure. One of the...
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3695105 |
HYDRAULIC VALVE WITH FLUID METER CONNECTIONS
The rotor in a square cock head valve has the usual main fluid passage. In addition, it also has upstream and downstream orifices communicating connectably to a meter attachment point on the valve...
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3590473 |
METHOD OF MANUFACTURING HYDRAULIC VALVE WITH FLUID METER CONNECTIONS
The rotor in a square cock head valve has the usual main fluid passage. In addition, it also has upstream and downstream orifices communicatingly connectably to a meter attachment point on the...
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3508432 |
SPINNERET CAPILLARY INSPECTION APPARATUS
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3434341 |
CARBURETOR TEST EQUIPMENT
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3271994 |
Fluid flow comparator for use in calibrating fluid flow orifices
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3226973 |
Mass flow measurement methods and apparatus
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3119733 |
Distribution plate for paper machine head box having taper-flow inlet
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2909920 |
Pneumatic gauging apparatus
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2879140 |
Fluid blending
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2861451 |
Fluid leakage gauging device
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2810606 |
Liquid fertilizer calibrating device
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2802363 |
Apparatus responsive to variations in the differential between the levels of two liquid bodies
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2796229 |
Pressure cylinder unit and method
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3605480 |
Title is not available
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