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Patent Searching and Data


Matches 451 - 500 out of 1,334

Document Document Title
JP2005069705
To reduce cost by simplifying the constitution of a detector used for detecting both the differential pressure (P1-P2) between an upstream-side (high-pressure side) pressure P1 and a downstream-side (low-pressure side) pressure P2 of a r...  
JP3655978
To provide the certainty of a fire alarm by certainly prevent erroneous information at the time of momentary water passing in a flowing water control valve in a working valve type flowing water detecting device. The outside of a valve ma...  
JP2005049245
To realize the shape of a backplate surface such that a preload diaphragm initiates distortion at a set pressure value.A differential pressure measuring system comprises a backplate surface provided on the side of a main body and a prelo...  
JP2005043198
To provide a semiconductor differential pressure measuring device having an excessive pressure protection means and a damping means in a sensor chip.The semiconductor differential pressure measuring device is equipped with a recession wh...  
JP2005024382
To provide a differential pressure measuring apparatus having a protection diaphragm with specified tension in the radial direction and sufficient corrosion resistance, and to provide a method for manufacturing the differential pressure ...  
JP2005010021
To provide a differential pressure transmitter accurately calculating a differential pressure between a high pressure side and a low pressure side generated by pressure receiving diaphragms, by providing a correction means for correcting...  
JP3633779
To reduce maintenance costs, by setting a boss part having one end fixed to a connection part of a pressure introduction tube to a diaphragm seal unit, a needle part connecting the diaphragm seal unit, and the pressure introduction tube,...  
JP2005003442
To provide a differential pressure and pressure transmitter for normally measuring static pressure even if a protection mechanism operates by the occurrence of an excessive pressure and a differential pressure cannot be measured.High-pre...  
JP2004361159
To provide a remote seal type pressure/differential pressure transmitter superior in property stability by solving property instability due to hydrogen discharged from constituent materials.A flange part 3a is divided into a part having ...  
JP2004354128
To provide a differential pressure measuring apparatus capable of improving assemblability and operation characteristics and achieving a compact diaphragm for excessive pressure protection.A differential pressure measuring apparatus is p...  
JP2004313498
To offer a respiration detector in which dust enters between a mobile electrode and a non-movable electrode with external air circulating through an external respiration detector to cause neither a glitch nor poor measuring, its measurem...  
JP2004294175
To solve the problem that the blockage of a connecting pipe cannot be detected accurately since rise or fall components appear while being rocked when pressure and differential pressure are rising or falling.Three pressure or differentia...  
JP2004294253
To provide an electrostatic capacity type pressure sensor, heightening the pressure sensitivity to an offset capacity, and performing high-speed operation.A movable electrode plate is disposed between a first fixed electrode plate 11 and...  
JP2004294285
To provide a ring for a differential pressure/pressure transmitter having a structure for performing highly accurate measurement by surely preventing foreign matter and deposit from sticking to a liquid-contacting diaphragm while prevent...  
JP2004279091
To prevent moisture from entering an atmospheric pressure introduction hole with an inexpensive configuration in a pressure sensor for introducing an atmospheric pressure into a case for accommodating a sensor element for detecting press...  
JP2004271501
To provide an ultra-precise minute differential pressure measuring device capable of precisely and continuously measuring a minute differential pressure and significantly reducing the manufacturing cost with a simple structure by transmi...  
JP2004251675
To provide a connecting tube structure obtained by noticing that installing two differential-pressure connecting tubes outside an exhaust tower satisfies their functions through ensuring that temperature difference between gases due to t...  
JP3583347
To easily carry out attaching and detaching work for a cover in an atmospheric pressure side by simple structure, and to make dust, an insect and the like easily removed even when they come into an inside of the cover. The disklike cover...  
JP2004212220
To make the direction of a detecting part freely changeable in addition to the directions of a transmission part and a meter, in response to the condition in an installed field.A pair of pressure introducing covers 12 for holding both si...  
JP2004203401
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...  
JP2004198277
To make a differential pressure measuring device less expensive by estimating a temperature of an object to be measured by using a built-in temperature sensor and eliminating the need to arrange another temperature sensor on the outside ...  
JP2004184167
To accurately detect air pressure inside a duct even in fire occurrence, and to enhance thereby reliability for control of pressurized air.This device is provided with pressure sensors 10, 11 for detecting the air pressures in a pressuri...  
JP2004177280
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...  
JP3566178
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...  
JP2004144491
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...  
JP2004132698
To provide a differential pressure/absolute pressure converter for accurately and rapidly performing load lock control.In the converter 10 and its conversion method, where an absolute pressure sensor for detecting an absolute pressure in...  
JP2004132817
To solve the problem that clogging of a conduit in all modes of high-pressure and/or low-pressure sides is not accurately detected when the clogging of the conduit is detected based on the magnitude of calculated variance value and corre...  
JP3548604
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...  
JP3545855
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...  
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...  

Matches 451 - 500 out of 1,334