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Patent Searching and Data


Matches 451 - 500 out of 1,305

Document Document Title
JP2004117086
To provide a low-cost differential pressure measurement device, having a miniaturized excessive pressure protective diaphragm.The differential pressure measurement device includes a high-pressure side pre-weighting diaphragm, a low-press...  
JP2004108848
To provide an oscillation type sensor detection circuit having no trouble factors for converting it into an ASIC by minimizing current/voltage converting operation and mainly using computing operation with a current signal for simplifyin...  
JP2004109031
To provide a differential pressure measuring system having the function of easily detecting abnormality of a liquid contact diaphragm for detecting the pressure of a process.The differential pressure measuring system comprises a diaphrag...  
JP2004108868
To provide a differential pressure transmitter for reducing variations in the O/L working points due to changes in the temperature of a excessive pressure protective mechanism by a simple structure and relaxing restrictions on the specif...  
JP2004093237
To provide a pressure receiving part capable of taking a large displacement even at a low pressure by forming a pre-loaded diaphragm in a wave shape.This transmitter comprises a high pressure side diaphragm part having a high pressure si...  
JP2004085354
To precisely measure, with a simple constitution, a flow velocity and a pressure (static pressure) of a flow in a non-steady state in which a pressure wave, a turbulent flow, or the like is generated.The piping network monitoring system ...  
JP2004077339
To provide a differential pressure measuring instrument without variations with the lapse of time, in which there is no need for repair or physical calibration even when immersed in a shield liquid.The differential pressure measuring ins...  
JP3521322
To obtain a differential-pressure measuring apparatus which is assembled easily and whose costs can be lowered by a method wherein the step part of a pressure-receiving part is formed to be a ring shape between the inside resistance-weld...  
JP2004053296
To provide a pressure measuring apparatus for discharging gaseous hydrogen without causing a loss or fouling up a pressure receiver due to a leak of an internal filler liquid when a filler liquid inlet is opened.A filler liquid inlet 34 ...  
JP2004053603
To solve the prior art problem wherein the non-linearity of an output characteristic curve of a pressure sensor cannot be removed by a conventional method of determining the place(s) of one or more diaphragm compensation resistor(s).The ...  
JP2004044585
To provide a method and a device for determining the length of the residual effective service life of an oil filter of an engine.An operator is informed of a service life state of the oil filter by monitoring the oil filter service life....  
JP2004037307
To provide a liquid level detecting remote sealed differential pressure transmitter for detecting an accurate liquid level without a bad influence received from a surrounding environment of an installed location.The liquid level detectin...  
JP2004028704
To provide an apparatus for measuring differential pressure, which is improved in zero drift caused by plastic deformation remaining in a protection diaphragm after applying excessive pressure thereto, by controlling stress produced in t...  
JP2004020524
To provide a differential pressure transmitter for determining a flow rate without finding out a differential pressure range by computing the differential pressure.The differential pressure transmitter comprises a differential pressure m...  
JP2004012392
To provide a differential sensor for detecting a differential pressure by measuring a displacement of a spool which is moved by the differential pressure, and excellent in small size, simple constitution, high precision, reliability, dur...  
JP2003344207
To make a diaphragm seal unit portion replaced easily, to enhance maintainability, and to cope with various kinds of processes. This diaphragm seal type differential pressure measuring instrument provided with the diaphragm seal unit via...  
JP2003337053
To provide a new structure for a flow sensor which facilitates measurement of a minute differential pressure when a minute flow rate is measured, and has a higher withstand pressure.A chamber 20 is partitioned into a primary chamber 21 a...  
JP2003337076
To provide a differential pressure measuring apparatus that can easily and inexpensively confirm that connecting piping is clogged.In the differential pressure measuring apparatus, measurement fluid is introduced to a differential pressu...  
JP2003315193
To provide a pressure sensor that is suitable for use in a severe environment to detect the pressure of exhaust gas or the like.The pressure sensor comprises a case 10 having a first recessed portion 11a in one surface and a second reces...  
JP2003270071
To solve the problem that the expansion and contraction of only a partial incompressible sealing liquid become a pressure measurement error caused when only a part of capillary tube is exposed to direct sunlight or wind depending upon th...  
JP2003254847
To provide a differential pressure detector which can approximately equalize a first-pressure side sealing liquid and a second-pressure side sealing liquid in quantity without making each member of a detecting element larger, and enables...  
JP2003254846
To provide a differential pressure detector which prevents influence of tightening when the detector is assembled, and prevents a change in the output of a measured value.A sealing liquid for high pressure and a sealing liquid for low pr...  
JP2003240659
To provide a differential pressure identification device with high practicality since a price is low and the applicable place is not limited, and not producing working error caused by the accumulation of dust, in a facility having a plur...  
JP2003227770
To provide a differential pressure transmitter capable of preventing coagulation of a fluid which is to be measured by estimating heat retention condition of a pressure guiding piping or a flange which guide in the fluid to be measured, ...  
JP2003222563
To provide a pressure receiving part of an easily workable construction in the case of a differential pressure transmitter of a construction wherein an excessive pressure is detected by using an excessive pressure protecting diaphragm.Th...  
JP2003214969
To provide a structure capable of reducing or eliminating the surface tensions of enclosed liquids by providing voids in between the rear surfaces of overpressure-protected diaphragms and the surfaces of contact liquids.This differential...  
JP3450237
To provide a pitch change processing technology which causes less damage to the naturalness of voice. A waveform in the respective pitches of a voice waveform is divided into 1) time α when a minus peak attended with the close of vocal ...  
JP2003177070
To provide an inexpensive differential pressure measuring apparatus with improved resistance to corrosion.The differential pressure measuring apparatus is provided with a seal-diaphragm-protruded diaphragm unit provided with a protruded ...  
JP3445401
PURPOSE: To polymerize an olefin for a long period of time stably and continuously while maintaining the height of powder surface approximately constant by measuring pressure difference between a point in a fluidized bed and a non-flow s...  
JP2003177038
To extend a measuring range in which a high measuring precision can be obtained, and to prevent deterioration of the measuring precision caused by a change with the passage of time.The area of an opening of the valve body 22 of a differe...  
JP3441265
To make it possible to perform a highly accurate differential-pressure measurement and to achieve a compact configuration and a low cost by linking the respective central parts of a main diaphragm, a high-pressure-side secondary diaphrag...  
JP2003166890
To provide a technology capable of measuring accurately the differential value of a physical quantity generated on the positions at a distance without being influenced by a surrounding environment or the like.Light emitted from a light s...  
JP2003166891
To provide a technology capable of measuring accurately the differential value of a physical quantity generated on the positions at a distance without being influenced by a surrounding environment or the like and without being influenced...  
JP2003156401
To provide an inexpensive device for measuring differential pressure which has a detection function for an anomaly of a pressure part such as failure of liquid-contact diaphragms or permeation of gaseous hydrogen into a pressure room.The...  
JP2003149112
To provide a differential pressure type gas chromatograph detecting device with low noise.In this invention, a detecting flow path 5 respectively leading to a dummy column 3 used for detection and to the detecting side of a differential ...  
JP2003130746
To obtain a remote seal type differential pressure transmitter that can easily remove and exchange each component in an apparatus and at the same time can cope with also a diversified flange standard.In the remote seal type differential ...  
JP3423686
To protect a pressure measuring cell against interference in a pressure measuring device having a casing and the pressure measuring cell arranged in it. This pressure measuring cell is provided with a converter for converting the displac...  
JP2003121283
To provide a process connector capable of preventing the jam or coagulation of a measuring fluid in a differential pressure measuring device.This process connector is provided with: two pipe connection openings formed in a process connec...  
JP3421011
To provide a differential pressure type micro-leak detection method and a device capable of filling gas in a short time without generating the temperature difference between a test vessel and a reference vessel, and executing leak detect...  
JP2003106921
To simplify assembly configuration in a pressure sensor device constituted by assembling a sensor element for detecting pressure on a circuit board.This pressure sensor device is provided with the circuit board 10, the sensor element 20 ...  
JP2003098023
To provide a pressure sensor for measuring the pressure by converting the pressure into the stroke quantity instead of pressure measurement using a strain gage.In this pressure sensor, a spool 3 is provided in a pressure conversion part ...  
JP3409109
To improve durability against expansion and shrinkage of a component in a pressure sensor where a semiconductor pressure sensor body is mounted to a circuit substrate in a body case. A connection terminal 11 that projects from a package ...  
JP2003083830
To calculate a speed of response of a pressure transmitting medium regardless of a viscosity, by calculating the speed of response based on temperature data of a capillary tube in consideration of the viscosity of the pressure transmitti...  
JP2003075464
To provide an optical flow direction sensor that can detect the flowing direction of water, etc., when the water flows by detecting the pressure difference caused by the flow velocity of the water on the upstream side and downstream side...  
JP2003065868
To provide a small-sized and highly-sensitive pressure detection device capable of detecting the outside pressure accurately.This package for the pressure detection device is equipped with an insulating substrate 1 having a loading part ...  
JP2003065869
To provide a small-sized and highly-sensitive pressure detection device capable of detecting the outside pressure accurately over a long period.This package for the pressure detection device comprises a ceramic substrate 1 having plural ...  
JP3402354
To improve corrosion resistance and durability of a differential pressure-measuring apparatus by providing a main body block, a doughnut- shaped flange part, a cylindrical protecting cover body of tantalum covering cylindrical two buffer...  
JP2003049958
To provide an opening and closing valve of a connecting passage for a differential pressure detector capable of being easily operated with a simple structure at a low cost. A high pressure side connecting passage 2 extending from a high ...  
JP2003049957
To provide an opening and closing valve of a connecting passage for a differential pressure detector capable of being easily operated with a simple structure at a low cost. A high pressure side connecting passage 2 and a low pressure sid...  
JP2003042878
To provide a pressure sensor capable of facilitating manufacture, obtaining satisfactory temperature characteristics and a wide pressure measurement range, and making a package compact. A differential pressure sensor chip 4 is provided w...  

Matches 451 - 500 out of 1,305