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Patent Searching and Data


Matches 351 - 400 out of 1,334

Document Document Title
JP2009025240A
To provide an optical differential pressure measuring method and an optical differential pressure sensor having large sensitivity to fine pressure variation and capable of precisely measuring the fine pressure variation on a surface of a...  
JP2009019988A
To provide a pressure gauge reducing the weight and the manufacturing cost.The pressure gauge the flange of which is installed to the main body capsule comprises: a female screw provided in the main body capsule to install a high-pressur...  
JP2008304245A
To provide a pressure sensor capable of reducing the influence, when different influences due to external stresses, such as, vibrations received by a plurality of sensor chips having each protective member provided on a pressure-receivin...  
JP2008292217A
To provide a diaphragm seal type pressure measuring device which reduces leakage amounts of liquids put inside a first and a second connecting pipe and sealed, when the first and second connecting pipes are separated at an attaching/deta...  
JP2008292185A
To achieve a differential pressure transmitter capable of preventing breaking of a differential pressure sensor due to sudden change of a differential pressure.This differential pressure transmitter is provided with a differential pressu...  
JP2008286802A
To provide pressure sensing diaphragms, formed by the smooth surface (12), which deflect in response to local pressures against the surface to enable the measurement of unperturbed local pressures of materials sheared between plates and ...  
JP2008256370A
To provide a differential pressure monitoring panel that indicates a differential pressure meter accurate and stabilizing the indication, even immediately after switching operation, despite the case of employing only a single differentia...  
JP2008216114A
To provide a pressure sensor capable of detecting not only a differential pressure but also an absolute pressure.The pressure sensor acquires a differential pressure of each pressure introduced to each pressure introduction port 11, 12 b...  
JP2008209385A
To provide a semiconductor sensor for spreading the range of fluid and flow rate to be measured, by preventing corrosion due to the penetration of fluid and damage due to the pressure of fluid.The semiconductor sensor 1 includes at least...  
JP2008196960A
To provide a semiconductor sensor capable of measuring a differential pressure between two spaces.This semiconductor sensor is equipped with a semiconductor substrate and a pressure-receiving member bonded to the semiconductor substrate....  
JP2008185388A
To provide a fine differential pressure gage hardly influenced by a temperature change inside/outside an apparatus, capable adjusting a zero point more accurately with a simple structure, and resultantly measuring a fine differential pre...  
JP2008128979A
To provide a differential pressure sensor usable favorably even in combustion gas or the like, and allowing precise measurement by simple constitution.This differential pressure sensor outputs, as a detection result, an electrification q...  
JP2008008762A
To provide a pressure sensor which makes the same the sizes of thermal stresses applied on first and second pressure detection parts.The pressure sensor S1 comprises: a case 10; first and second sensor chips 20 and 30 stored in the insid...  
JP2007178194A
To provide a differential pressure measurement system for measuring a differential pressure in an optically wide dynamic range.This differential pressure measurement system includes a light source 4, a first sensor 5 for changing the lig...  
JP2007155566A
To provide a pressure transmitter which is free from leakage of a sealing liquid, can deal with high-pressure, high-temperature, and cryogenic-temperature processes, reduces errors in liquid-touching temperature and pressure, and is prac...  
JP3969027B
To improve sensor measurement accuracy and obtain quick responsivity. This sensor signal processing circuit is provided with a capacitance-type sensor part with characteristics which changes as a whole according to changes in a physical ...  
JP3966010B
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...  
JP2007132664A
To provide a manometer capable of easily managing water as a manometer liquid.The manometer includes a U-shaped main body 2 made of a nonflexible, transparent tube member, having one end communicating with and connected to the clean side...  
JP3962610B
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 p...  
JP3959665B
To provide a flange-mounting type differential pressure measuring apparatus having an enhanced temperature characteristic. The flange-mounting type differential pressure measuring apparatus includes a pressure sensor provided in a body, ...  
JP3961898B
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...  
JP2007121140A
To provide a system for measuring a differential pressure, capable of precisely measuring the differential pressure, without being affected by variations in irradiation intensity and transmission efficiency of an optical waveguide.The sy...  
JP2007107993A
To provide a pressure sensor capable of obtaining sensor output according to a normal pressure difference even if two pressures applied to the pressure sensor are inverted by erroneous connection.In the pressure sensor, a voltage signal ...  
JP2007101324A
To provide a differential pressure measuring system capable of measuring the differential pressure with a high degree of accuracy without impact of modulation in the light intensity of irradiating light and the transmissivity of light gu...  
JP2007085808A
To provide a simple and low-cost pressure transmitter.In this pressure transmitter, a seal diaphragm impressed with a process pressure communicates with a sensor for pressure measurement via a communicating path provided in a body with a...  
JP2007085943A
To provide a system for measuring differential pressure capable of correcting luminous energy modulation of irradiation light, and capable of measuring precisely the differential pressure.This system includes a light source 4, the first ...  
JP2007064703A
To provide a differential pressure/pressure detector with increased joint strength.The remote seal type differential pressure/pressure detector 1 comprises pressure receiving elements 100L, 100R, capillary tubes 200L, 200R, and a detecto...  
JP2007047012A
To provide a differential pressure measuring device with a clogging diagnosis function of a lead pipe capable of discriminating and determining clogging between a high-pressure side lead pipe and a low-pressure side lead pipe, besides de...  
JP3917574B
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...  
JP2007024500A
To provide a differential pressure transmitter which allows measurement with a stable output against ambient temperature changes, has a simple structure, and is inexpensive.The differential pressure transmitter transmits pressure from a ...  
JP3906833B
To improve durability by restraining influence of condensed water in pressure transmission pipes 40, 41 and making the influence of heat and vibration of an engine 1 hard to be exerted, in a device for detecting the exhaust pressure from...  
JP2007017223A
To reduce labor hour for oil injection or diaphragm mounting and minimize the difference between respective oil pressures in two pressure detection chambers in an oil sealing type differential pressure sensor.A case 10 has a sensor eleme...  
JP3900351B
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 prel...  
JP3895937B
To adjust sensitivity to be high to the static pressure, and to be low to the differential pressure, and to reduce crosstalks, by installing gages for static pressure detection at the optimum position. A diaphragm 3 is formed on the cent...  
JP3892065B
To fix a sensor chip comprising a pressure sensitive element coupled to a glass seat to a housing while a fluctuation in characteristics of the pressure sensitive element is prevented. A seat 25 of a sensor chip 23 is bonded to a stem 28...  
JP2006329846A
To provide a pressure sensor capable of easily and exactly diagnosing clogging of a pressure guide tube without being affected by flow rate of the process and diagnostic method for clogging of the pressure sensor.The pressure sensor dete...  
JP3887290B
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...  
JP3876941B
To enable surely agitating solution in a tank in a short time by installing upper part agitating air piping for agitating solution in the upper part in a storage tank and lower part agitating air piping for agitating solution in the bott...  
JP2006308578A
To provide an equalizing valve for measuring differential pressure and a differential pressure type flowmeter, capable of making size compact, of simplifying, and of reducing the cost.The first inlet passage 361 is extended along the axi...  
JP2006300570A
To provide a differential pressure/pressure transmitter dispensing with an excessive pressure protection mechanism in a pressure-receiving body itself.In this differential pressure/pressure transmitter for transmitting a high-pressure si...  
JP3859734B
PURPOSE: To provide a method or an apparatus for changing the inside pressure of a vehicle at a determined rate when the outside pressure of the ventilated or air-conditioned vehicle changes suddenly. CONSTITUTION: The apparatus for elim...  
JP3847281B
To provide a pressure sensor device having a simple structure and capable of being miniaturized, in which the excessive pressure protection operational pressure for a sensor chip can be made sufficiently high. The pressure sensor device ...  
JP3845615B
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 ...  
JP2006208225A
To provide a high-precision differential pressure sensor which is not influenced by large fluctuations in baseline pressure.The differential pressure sensor comprises: a pair of diaphragms 1a, 1b including diaphragm parts 7a, 7b which be...  
JP2006177690A
To provide a apparatus for measuring differential pressure which can measure a differential pressure simply, without requiring laying of pipelines.The differential pressure measuring apparatus which measures the differential pressure wit...  
JP2006177833A
To provide a differential pressure transmitter, capable of acquiring values of differential pressure, H-side static pressure, and L-side static pressure in which simultaneity is maintained.The pressure transmitter is provided with both a...  
JP2006170984A
To provide a differential pressure sensor 12 used for industrial applications.The differential pressure sensor 12 includes a membrane layer 36, having a covered portion 38 and an exposed portion 40, where a first side of the exposed port...  
JP2006170760A
To provide a low-cost material having superior properties in corrosion resistance and mechanical strength, which is used as a diaphragm of a differential pressure transmitter for a liquid-level meter in a reaction vessel and a post-treat...  
JP2006170851A
To reduce a detection error caused by a temperature difference between oils in both pressure detecting chambers, to the utmost, in a pressure sensor provided with the pressure detecting chambers with oils sealed in one face side and the ...  
JP3804242B
To provide an electrostatic servo type physical amount detector of which permits high-sensitivity servo control. Carrier wave signals P1, P2 having different periods between a high level (Hi) and a low level (Lo) are applied to fixed ele...  

Matches 351 - 400 out of 1,334