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Patent Searching and Data


Matches 601 - 650 out of 1,305

Document Document Title
JP3173272
PURPOSE: To block or reduce permeation of hydrogen through a diaphragm by applying a coating of chromium oxide, titanium nitride or boron nitride to the surface of the diaphragm. CONSTITUTION: The pressure transmitter comprises recessed ...  
JP2001074578
To provide a temperature characteristic regulating method for a differential pressure measuring device of a remote seal type with excellent productivity. A static pressure characteristic of a zero-point output in the differential pressur...  
JP3166477
PURPOSE: To provide the structure, wherein the compact configuration, the light weight and the low cost are achieved and the welded place of a contact part with a sealed liquid is not in contact with the external air. CONSTITUTION: In th...  
JP2001059791
To provide a structure for mounting a pressure sensor for detecting hydraulic pressure which does not require drilling work for mounting a pressure sensor. In this structure for mounting a pressure sensor for detecting hydraulic pressure...  
JP3161641
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...  
JP3160796
PURPOSE: To provide a semiconductor pressure detector in which the influence of a residual strain on a silicon diaphragm is eliminated when a glass base is bonded to a metallic base with bonding glass, and the occurrence of insufficient ...  
JP2001041839
To discriminate clogging by knowing a flow condition of a powder extracting line when polymer powder is extracted for transportation, by connecting the powder extracting line which extracts the polymer powder from a fluid bed reactor to ...  
JP3158913
PURPOSE: To enable the preventing of the destruction of a sensor by providing a pressure receiving chamber with a deformation member for changing the volume of the inside of the pressure receiving chamber by a differential power or a pre...  
JP2001033333
To measure the pressure of fluid at an arbitrary piping place to be measured while lowering cost and simplifying constitution. This pressure measuring instrument has a static pressure detection part 7 and a flow rate measuring part 8 uni...  
JP2001033332
To provide a relative pressure sensor which is protected against impurities and/or moisture and made sufficient without being filled with oil. A measuring chamber 5 filled with gas is provided and closed by a pressure-sensitive measuring...  
JP3154267
PURPOSE: To easily protect a formed film part for detecting differential pressure and prevent the formed film part from being affected by the expansion due to temperature increase of a protective member so as to enhance high differential...  
JP3154264
PURPOSE: To achieve higher reliability of a clamp part and a lover production cost by employing a more accurate clamping structure without the use of a clamping device especially in a structure for assembling a differential pressure sens...  
JP2001027572
To obtain a differential pressure type pressure transducer which is small-sized, lightweight, and low-cost.Bellows 5 which are made of rubber or plastic are used as a balanced previous pressure generation part 21 which generates balanced...  
JP2001021431
To detect relative pressure by an inexpensive simplified constitution.Two sensor elements 10 and 20 each arranged in different pressure spaces A and B are composed of semiconductor substrates in which pressure reference chambers 11 and 2...  
JP2001021430
To prevent actually the shift of a zero point from occurring at relative humidity which reaches the vicinity of a saturation limit.This sensor is provided with both a diaphragm 11 having a surface to which a first electrode 4 is mounted ...  
JP3148884
To obtain a site-type measuring instrument which can satisfy an explosionproof regulation by a method wherein a terminal base which is provided integrally with a meter housing part having an opening part in a tip face protruding to the f...  
JP3148883
To prevent a tensile stress or a bending stress from being generated in the welding part of a capillary tube and at the same time to prevent salinity from entering. The end of a capillary tube 2 is connected to the end surface of the one...  
JP2001013026
To provide a capacitative pressure sensor or a capacitative differential pressure sensor that manufactures an electrode by a method being different from the silk screen printing method or sputtering.The sensor includes a substrate 1 with...  
JP3150500
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...  
JP2001009216
To provide the subject device simple in a structure, inexpensive, capable of precisely detecting the clogging from the outside and applicable even to an end pipe.In this device, the bypass line of a filter device 1 such as a strainer 2 i...  
JP3147972
PURPOSE: To prevent wear of a metal surface resulting from sliding by furnishing a coating layer in that part of a spring element which contacts a center diaphragm or a housing, wherein the spring element is provided for suppressing the ...  
JP3147778
To improve static pressure span characteristics by reducing an area of a conductive film coated to a surface opposite to a diaphragm in a fixed electrode facing close to the diaphragm. A fixed electrode comprises an insulating plate 1 ha...  
JP3147275
PURPOSE: To obtain a diagnostic apparatus by which a fault part is discriminated without removing a differential-pressure detector by providing a function or the like which discriminates the kind of a fault on the basis of the response c...  
JP3147280
PURPOSE: To simplify instrumentation, to enhance the reliability and to prevent a misoperation in the zero-adjustment by a method wherein a measurement differential pressure is detected by a differential pressure-measuring device body in...  
JP2000356563
To provide a capacitance type pressure detector element capable of ensuring differential pressure sensitivity and attaining good response.A silicone diaphragm 11 and two insulation members 21 and 31 contacted putting the diaphragm 11 in ...  
JP3142752
To provide a fixing structure of a shaft part by which a shaft part can be firmly fixed by preventing a crack and a rupture of the shaft part by stress concentration. A fixing structure of a shaft part is composed of a body 1 in which a ...  
JP3141371
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...  
JP2000346734
To provide a device for reliably measuring differential pressure by preventing power object or the like from being deposited in a monitor pipe for clogging.An air-feeding pipe 2 is mounted to one portion of a monitor pipe 1 where a tip p...  
JP2000337986
To provide a capacitive pressure detecting element which can secure good responsiveness in a high flow rate domain while maintaining sensitivity required for detecting a very small differential pressure in a low flow rate domain and, in ...  
JP3134828
To provide the structure of a differential pressure sensor that is suited for obtaining an accurate pressure signal and can be manufactured easily and a method for assembling the sensor. A semiconductor chip 1 with a pressure-sensitive p...  
JP2000321160
To miniaturize a device and to easily maintain and insect the device by performing the √ conversion from the differential pressure signal of process fluid that is detected by a pressure reception part and displaying the conversion resu...  
JP3129613
PURPOSE: To diagnose the abnormality of a sensor so as to improve the reliability of a device by providing the sensor possessing sensibility mainly to a static pressure on a semiconductor chip, and comparing its measured signal with a st...  
JP3131374
To provide a differential pressure type semiconductor sensor of thin type. On the side surface of a body 2 to which a sensor chip 1 containing a pressure reception diaphragm 10a is jointed, first and second insertion openings 15 and 16 w...  
JP3129121
PURPOSE: To detect the clogging of a pressure introduction pipe by an apparatus easy to maintain and improve the pressure-measuring reliability, by detecting a clogging state of one or both of the pressure introduction pipes from the cor...  
JP2000314650
To provide a capacitance-type gas/liquid detector by which a change in a capacitance caused by a liquid coming into contact with a sensor can be detected surely and easily. This gas/liquid detector 10 for an ionic liquid is provided with...  
JP3127431
To enable measurement with high accuracy even by a diaphragm with small pore size. Each of reference static pressure, reference differential pressure, and reference temperature is impressed on the main body of detection by a few points i...  
JP3127430
To prevent a transmission part from rotating to the main body at the time of receiving external forces. A tubular part 18 is protrudingly provided for the enclosure 5 of a main body 2, and this tubular part 18 is fitted into a cylindrica...  
JP3123314
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...  
JP3120640
PURPOSE: To prevent clearance corrosion from occurring by providing a space part or a qroove at the outer-periphery side of the diaphragm mounting part of a pressure reception chamber. CONSTITUTION: A pressure reception cover 8, two sepa...  
JP2000283399
To improve airtight performance by limiting a mechanical joint part to be only between a process connector and a transmitter by jointing stainless steel pipes to each other by welding to constitute required piping. This piping mechanism ...  
JP2000278797
To provide a self-utterance detector that can well detect only vibration of a voice band propagated to an inner wall of an external auditory miatus. A detection section 13 made of a soft resin that is formed to have a cap form whose one ...  
JP3111816
PURPOSE: To facilitate maintenance while reducing the size and saving manhour by providing a signal processing section with a deflectable inlet for introducing time wiring of host controls. CONSTITUTION: Under a state where a transmitter...  
JP2000241277
To avoid standing of bubbles in a fluid within a sensor. A first substrate 1 is provided with a detection electrode 16 while a second substrate 2 is provided with a boss part 4 oppositely to the detection electrode 16 and a measuring rec...  
JP2000241290
To determine a test time corresponding to the threshold value of pressure variation of a pressure sensor easily without relying upon calculation. The volume varying unit M comprises a body 10 having a cylinder chamber 11, a piston 20 scr...  
JP3107516
To realize a composite sensor which can detect by single sensor the water level and water quality or the flow rate and water quality in the water storage system such as reservoir, paddy field, etc. A first glass substrate 2 having a pres...  
JP3105087
PURPOSE: To obtain a differential-pressure detector, which can obtain the highly reliable detected value of differential pressure all the time without the effect of temperature change. CONSTITUTION: Liquid separating diaphragms 4 and 5 a...  
JP3105680
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...  
JP2000234978
To provide a differential-pressure detecting device which can be miniaturized easily and which is of high reliability and to provide a fluid-pressure actuator which uses the detecting device and which is of high reliability. In this diff...  
JP2000205985
To reliably compensate for a zero point after assembling by arranging a means for displacing a high pressure side or low pressure side pressure receiving diaphragm by prescribed quantity by moving a high pressure side or low pressure sid...  
JP2000180284
To compensate zero point shift by obtaining the factor of a linear expression nearly approximated to the total quantity of zero point shift based on temperature change of pressure transmission liquid by computation or actual measurement,...  

Matches 601 - 650 out of 1,305