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Patent Searching and Data


Matches 951 - 1,000 out of 3,154

Document Document Title
JP3566178B2
To provide a highly reliable pressure detection device capable of being made small easily. This device is equipped with a housing 11 for forming therein fluid chambers 21A, 21B for introducing the fluid pressure from the outside, a press...  
JP2004526163A
A chamber inside a housing communicates with the surrounding area of the housing via a gas exchange path, whereby a filter element comprising a nanoporous, hydrophobic or hydrophobicized material is located in the gas exchange path. The ...  
JP3552730B2  
JP3548604B2
PURPOSE: To accurately distinguish the direction of a stud bolt by the difference of the length of the screw part on both sides of the stud bolt. CONSTITUTION: The air 8 of an air supply source 9 is sprayed to the shaft part 1a of a stud...  
JP2004203401A
To provide a monitoring method which can more carefully and correctly monitor a pressure state in a sterile chamber than a conventional method by visual inspection.A differential pressure transmitter 8 for outputting an electric signal a...  
JP3545855B2
To provide a method for easily and correctly measuring a hermeticity of a building in an inhabited state. While an opening part 2 of a building 1 is opened, a ventilation fan 12 is driven and a minute differential pressure sensor 11 is s...  
JP2004177280A
To provide a differential pressure measurement system capable of easy attachment or detachment while capable of preventing a differential sensor from being damaged owing to an artificial mistake.The measurement system is provided with: t...  
JP2004144491A
To provide a differential pressure/pressure detector capable of measuring differential pressure and static pressure concurrently, and a differential pressure transmitter for diagnosing jamming of a connecting pipe using the detector.A th...  
JP3521322B2
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...  
JP2004117086A
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...  
JP2004108848A
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...  
JP2004109031A
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...  
JP2004077339A
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...  
JP2004053603A
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 ...  
JP2004044585A
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....  
JP2004037307A
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...  
JP2004028704A
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...  
JP2004020524A
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...  
JP2004012392A
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...  
JP2003534529A
A pressure sensor capsule with a beam shaped sensor body, made of direct bonded layers of single crystal sapphire, surrounding a hollow central channel. A first beam end receives pressure and a second beam end has electrical contact pads...  
JP2003315193A
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...  
JP2003270071A
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...  
JP3450237B2
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 ...  
JP3445401B2
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...  
JP3441265B2
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...  
JP2003222563A
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...  
JP2003522942A
A pressure sensor is provided for measuring a pressure difference between two fluids which does not require isolation fluid. The pressure sensor includes a diaphragm support member having an outer periphery and diaphragms coupled thereto...  
JP3423686B2
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...  
JP3421011B2
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...  
JP2003177038A
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...  
JP3415846B2
A transmitter provides an output indicative of pressure of process fluid. The transmitter has a first body with a passageway filled with isolation fluid extending from a first port to a pressure sensor. A second body has an inlet for rec...  
JP3409109B2
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 ...  
JP3410095B2
A pedestal mount capacitive pressure sensor (10) is supported in a housing (11) and used to sense fluid pressures to provide air pressure data relating to the performance of air vehicles. The capacitive sensor uses a thick base plate (40...  
JP2003149112A
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 ...  
JP3408813B2
PCT No. PCT/DE94/00262 Sec. 371 Date Nov. 28, 1995 Sec. 102(e) Date Nov. 28, 1995 PCT Filed Mar. 9, 1994 PCT Pub. No. WO94/21992 PCT Pub. Date Sep. 29, 1994A pressure difference measurement transducer with an inner housing divided into t...  
JP3402354B2
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...  
JP2003121283A
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...  
JP3399536B2
This valve device assembly, which serves as a connection unit for a differential pressure transducer and is protected against false operation, has a first and a second inlet-end connection for connection to a differential pressure source...  
JP2003098023A
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 ...  
JP2003083830A
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...  
JP3388256B2
To provide a measuring device comprising such seal diaphragm part as improved for hydrogen permeation preventive characteristics, by covering the seal diaphragm part and a part of a seal ring with a gold plated film. Related to a seal di...  
JP3386626B2
PURPOSE: To obtain a leakage tester which can inspect an object to be tested for leakage at a high testing pneumatic pressure and, at the same time, can raise the sensitivity of a differential pressure detecting means for detecting leaka...  
JP2003075464A
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...  
JP3384736B2  
JP3384457B2  
JP2003065869A
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 ...  
JP2003065868A
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 ...  
JP3379511B2
A compact pressure differential/pressure detector is a process detection apparatus for measuring a pressure, a level, a pressure differential of a process fluid. The detector is constructed of a pressure sensing block having sensors for ...  
JP2003049957A
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...  
JP2003049958A
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 ...  

Matches 951 - 1,000 out of 3,154