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Patent Searching and Data


Matches 901 - 950 out of 1,305

Document Document Title
JP07110276
PURPOSE: To simplify the amplification stage of a later stage, improve its reliability, and reduce its cost by providing a means for compensating the temperature influence of a diffusion resistance formed on a semiconductor compound sens...  
JP07103839
PURPOSE: To provide a manometer/differential manometer for measuring the pressure, level, flow rate, etc., of a combustible fluid requiring an explosion-proof structure in which the temperature rise in a converter is restrained by suppre...  
JP07103841
PURPOSE: To enhance the workability and manufacturability by employing a metal flow junction as means for fitting members airtightly each other. CONSTITUTION: A pressure receiving section for measuring fluid comprises a unit component of...  
JP07103840
PURPOSE: To provide a highly reliable differential manometer in which dust is removed and abnormal function is prevented at the sensor part while reducing the manufacturing cost. CONSTITUTION: The differential manometer comprising a meta...  
JP07098258
PURPOSE: To provide a differential-pressure measuring apparatus, which can protect the main body part of a sensor against excessive pressure, can prevent the occurrence of the defective welding of a center diaphragm and can reduce hyster...  
JP07092047
PURPOSE: To provide a highly sensitive micro pressure difference detecting device with a hysteresis less than in the past. CONSTITUTION: A sealed space formed by a base 1 having a Hall element sensor 5 in the center part and a cover 2 th...  
JP07083777
PURPOSE: To make it possible to perform self-diagnosis of the leakage of a seal diaphragm without detaching the seal diaphragm from a measuring line by comparing the stored output value of a strain detection element with the actual outpu...  
JP07083778
PURPOSE: To prevent the welding inferiority of center diaphragms by moving a seal liquid through the communication hole of the second center diaphragm having a smaller diameter fixed to a first center diaphragm. CONSTITUTION: When pressu...  
JP07055619
PURPOSE: To eliminate the influence by a metal wiring and improve detecting precision by designing the form and direction of the metal wiring. CONSTITUTION: Four diffusion leads 20 are formed substantially at equal intervals in the circu...  
JP07055618
PURPOSE: To clear the dropping-out problem of a floating flange by the loosening of a temporary set screw for temporarily fixing it to a diaphragm base which is a pressure measuring end with a simple structure. CONSTITUTION: A flanged di...  
JP07049281
PURPOSE: To enable manufacture at a low cost with high accuracy in the thickness dimension of a diaphragm by letting an epitaxial growth layer grow on the surface of an SOI wafer, and performing selective polishing with a silicon oxide f...  
JP07049280
PURPOSE: To provide a differential pressure measuring device simple and low- priced with high excessive pressure detecting reliability by computing the difference of both signals of distortion detecting elements disposed respectively at ...  
JP07049279
PURPOSE: To provide a differential pressure measuring device compact and low-priced with high performance and a desirable hysteresis characteristic by providing backup chambers, forming thin film like, clearances, opposedly to a high pre...  
JP07043234
PURPOSE: To easily detect secular changes without stopping the operation of a plant, etc. CONSTITUTION: A reference resistor section 80 which does not cause much temperature change is provided near a pressure receiving section 70 and the...  
JP07035635
PURPOSE: To reduce the influence of a film part for differential pressure detection even if silicon oil and the like are expanded and hold high responsibility and detection performance in a differential pressure sensor filled with the si...  
JP07027646
PURPOSE: To provide a high-resolution and high sensitivity sensor in which electrodes are laid along a wall part of a third chamber, and the other one of pairs of electrodes is arranged on the surface of a common substrate constituting a...  
JP07027104
PURPOSE: To avoid adhesion due to mixed foreign matters in a working fluid by displacing the positions of the wall faces facing toward the same direction, out of the respective wall faces confining two chambers for introducing the pressu...  
JP06347356
PURPOSE: To improve the precision in detection by compensating the effect produced on an output of a differential pressure detecting part by a change in the permittivity of a sealed-in liquid due to a static pressure of each introduced p...  
JP06337231
PURPOSE: To judge leakage of sealed liquid when a difference is a predetermined value or more by storing initial characteristic curve of a temperature or pressure change and a zero point, and comparing a slope angle of a straight line fo...  
JP06337721
PURPOSE: To improve the precision of liquid level measurement by calculating the height to the liquid surface of a solution from the proportional relation among the total pressure of the bottom surface of a tank which is measured by a st...  
JP06331476
PURPOSE: To enable self-diagnosis of the leakage of sealed liquid by comparing the 0 points obtained by making the pressures on the high pressure side and low pressure side during self-diagnosis equal to a measuring pressure and the atmo...  
JP06331475
PURPOSE: To enable self-diagnosis of the leakage of sealed liquid without removing a differential pressure measuring device from a measuring line by comparing the inclination angle of a specific value curve during self-diagnosis with the...  
JP06307963
PURPOSE: To enhance electric insulation and withstand voltage by bonding dielectric airtight terminals individually to the sensor housing and isolating structurally thereby preventing the external distortion from being transmitted to a t...  
JP06307961
PURPOSE: To realize a differential pressure measuring equipment in which the yield is increased in the assemblage of a seal diaphragm while reducing the manufacturing cost. CONSTITUTION: In the differential pressure measuring equipment w...  
JP06307962
PURPOSE: To diagnose the leakage of encapsulated liquid without dismounting a measuring equipment by providing a CPU and a memory, storing an initial zero point output value obtained by equalizing the pressure on the high and low pressur...  
JP06278453
PURPOSE: To perform display of the clogged state of the filter of in air- conditioning device for a vehicle and switching of an air introduction passage. CONSTITUTION: Pressure sensors are arranged in respective positions situated upper ...  
JP06273249
PURPOSE: To heighten detecting accuracy by holding linearity to a pressure difference in electrostatic capacity in an electrostatic capacity type pressure sensor to detect pressure after converting it into a change in the electrostatic c...  
JP06272859
PURPOSE: To quickly confirm an ignition state upon starting a combustion furnace by deflecting a pressure change in the course of a supply passage of fuel gas or oxidizing agent gas to the combustion furnace. CONSTITUTION: A control valv...  
JP06235672
PURPOSE: To provide a composite function type differential pressure sensor comprising a differential pressure sensor, a pressure (static pressure) sensor, and a temperature sensor formed on one chip in which a differential pressure signa...  
JP06229865
PURPOSE: To reduce the temperature strain applied to a liquid partitioning diaphragm so as to suppress the drift and temperature hysteresis and reduce the size of the diaphragm by making a closed curve formed by the weld part between a b...  
JP06213751
PURPOSE: To provide a miniature semiconductor differential pressure sensor having protective function for diaphragm in which a microgap can be obtained between a diaphragm and an excess pressure stopper member. CONSTITUTION: Two fluid pr...  
JP06213750
PURPOSE: To enhance corrosion resistant performance of a seal diaphragm by employing a metal baser than the main body as the material of a pressure introduction flange. CONSTITUTION: An iron pressure introduction flange 4 is provided wit...  
JP06207874
PURPOSE: To reduce the fluctuation of a span due to a change in temperature from a reference temperature. CONSTITUTION: In order to reduce the fluctuation of a span, it is needed only to make a gap δ between the central part of a diaphr...  
JP06201419
PURPOSE: To provide a pressure sensor in which deterioration of the elasticity of membrane is retarded and durability is enhanced by eliminating the effect of external vibration through subtraction and eliminating noise without vibrating...  
JP06194247
PURPOSE: To prevent a center diaphragm from zero-point variation during jointing and when an excessive pressure is applied by making a pressure receiving member with a single member, arranging two sets of pressure receiving chambers, tha...  
JP06194245
PURPOSE: To provide a differential pressure detector where the inside of a connecting pipe for a diaphragm unit can be degassed completely and quickly and an incompressive fluid can be also sealed as well so that the fluids on the respec...  
JP06194246
PURPOSE: To enable the differential pressure detection with good responsiveness and stability even in the state where the fluid temperature on the respective measurement pressure sides is different from that in the periphery of a connect...  
JP06186108
PURPOSE: To provide a differential pressure sensor wherein its size is small, its cost is low and its corrosion resistance is enhanced. CONSTITUTION: This sensor is constituted of a conversion part 3 which converts the output of a differ...  
JP06180263
PURPOSE: To provide a pressure introducing mechanism for differential pressure sensor using a both-surface pressure receiving type diaphragm where a partitioning structure between a protective fluid and a pressurizing fluid is made to be...  
JP06174510
PURPOSE: To easily measure the flow rate in wide range from a large flow rate to a small flow rate by placing an orifice plate so that it abuts on a gear- lock part protruding from the peripheral wall inside a pipe from an upstream side....  
JP06167406
PURPOSE: To accurately measure a fine pressure change regardless of the magnitude of pressure. CONSTITUTION: A differential pressure type pressure change measuring device is equipped with a differential pressure type pressure sensor 10, ...  
JP06166371
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...  
JP06148018
PURPOSE: To provide a semiconductor pressure sensor which can detect a plurality of differential pressures simultaneously at a constant accuracy through the use of a semiconductor pressure sensor chip. CONSTITUTION: A semiconductor press...  
JP06137982
PURPOSE: To detect abnormality in an equipment and change with time the lapse of by providing a sensor for detecting the physical property of a sealed liquid at a part where the sealing flow of a differential pressure transfer equipment ...  
JP06129933
PURPOSE: To provide a capacitance pressure difference sensor having an overpressure protecting function and a method for manufacturing the sensor. CONSTITUTION: A cavity 16 is formed in one surface 12 of an n+-doped single- crystal silic...  
JP06129932
PURPOSE: To prevent that an accurate pressure measurement is obstructed when a metal at the inner-face part coming into contact with a liquid of a process cover, electrons are emitted and hydrogen gas is stored at the inside of a detecti...  
JP06102127
PURPOSE: To detect the leakage of the sealing soln. of a transmitter by providing a capsule having a recessed part formed thereto, the liquid contact diaphragm covering the recessed part of the capsule and the pressure sensor provided to...  
JP06102128
PURPOSE: To obtain a composite function sensor capable of accurately measuring a wide static pressure range by providing a plurality of static pressure detecting parts having different static pressure sensitivities. CONSTITUTION: A senso...  
JP06102125
PURPOSE: To obtain a pressure transmitter not damaging a product even when a sealing soln. leaks by the damage of a diaphragm and excellent in pollution control and safety by filling the space filled with the sealing soln. with an insula...  
JP06102124
PURPOSE: To easily and accurately measure differential pressure in an arbitrary measuring position. CONSTITUTION: An outdoor machine 2 consisting of an outdoor pressure measuring part 5 and a transmission part 6 is arranged outdoors and ...  

Matches 901 - 950 out of 1,305