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JP2001349798A |
To provide a pressure sensor in which the blocking of a pressure guide port is prevented, the bonding strength in the connection of a glass seat to a metal seat is improved, and the difference in bonding strength depending on solids is m...
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JP2001525539A |
A capacitive pressure transducer includes a conductive diaphragm positioned between pneumatically separated chambers. The diaphragm is fixed and sealingly coupled at its periphery to the peripheral rim of a concave body member. The diaph...
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JP3238001B2 |
PURPOSE: To provide a composite sensor and a composite transfer device using it wherein maximum output is obtained at static pressure input and the effect of differential pressure is suppressed. CONSTITUTION: Static pressure gauges 23a-2...
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JP2001337003A |
To provide an inspection method for vessel leakage for detecting leakage of an inspecting object by measuring very small pressure variation in a short time without being affected by temperature change.An inspecting object and vessels wit...
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JP2001330497A |
To provide a liquid pressure sensor in which mounting work is easy and there is no possibility of liquid leakage from a tank.The liquid pressure sensor 10 is constituted of a housing 11 with an opening part and internal pressure chamber ...
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JP2001330529A |
To provide a pressure sensor capable of accurately detecting a pressure without being affected by variations in temperature or external forces.This pressure sensor has a metal seating with a first pressure- introduction hole formed there...
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JP2001523814A |
A micromechanical differential pressure sensor device for measuring a pressure difference between two mutually separated spaces or media, in which two absolute pressure measuring devices are monolithically integrated on a single support ...
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JP3233791B2 |
PURPOSE: To accurately detect physical quantities and the like by providing an integrator setting the difference between the electrostatic capacitance of a detector corresponding to physical and chemical quantities of the detecting objec...
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JP3233404B2 |
A two wire transmitter responsive to a pressure differential sensor includes a fixed module and a removable module. The fixed module is adapted for connection to an analog removable module having a compensation capacitance MACDA or a dig...
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JP2001318018A |
To surely wash an inside of an adaptor attaching member and a surface of a seal diaphragm, and to remove a foreign matter such as dust.The adaptor attaching member 3 is fixed to one side face 9 of a transmitter body 2, and a pressure rec...
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JP2001318015A |
To surely wash an inside of an adaptor attaching member and a surface of a seal diaphragm in a measured pressure side, and to surely remove a foreign matter such as dust.The adaptor attaching member 50 is brought into close contact with ...
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JP2001318016A |
To reduce the number of portions having the possibility of leakage in a tank, to reduce an insatallation cost, an instrumentation cost and a cost of a transmitter, and to enhance maintainability.In this differential pressure measuring in...
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JP3223501B2 |
To reduce the load on a host device by determining the variation of a detected differential pressure signal from the differential pressure signal of one sampling period before, performing a primary delay operation to the variation, and o...
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JP3223950B2 |
PURPOSE: To prevent leakage of an encapsulated liquid due to corrosion by disposing a double stage gaskets between a pressure receiving capsule unit and a cover flange thereby preventing the outer atmosphere from intruding. CONSTITUTION:...
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JP3220346B2 |
PURPOSE: To provide a highly reliable pressure sensor having a highly accurate detecting characteristic regardless of a temperature cycle and high static pressure. CONSTITUTION: Since the outside diameter of a post 12a is smaller than th...
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JP2001518611A |
A method of filling a measuring chamber of a transducer measuring a pressure or a pressure differential with a pressure transmission fluid through a filling channel is described.In this method, a filling pin having a longitudinal channel...
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JP2001242024A |
To provide a body embedded type pressure sensor little affected by fluctuation of the embedded depth from the body surface of a patient and to provide a pressure detecting system and pressure adjustment system using it.The body embedded ...
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JP3205324B1 |
The measurement cell has a ceramic base body with a concave central surface (121) having a first electrode (122) and a peripheral convex surface to form an annular surface (126), on which a ceramic membrane (5) is connected, with a perip...
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JP3205325B2 |
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 wit...
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JP3205327B2 |
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...
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JP2001511884A |
A pressure transducer that includes at least two sensors having substantially similar or substantially identical error characteristics, wherein each sensor is arranged to be subjected to an applied pressure and the outputs of the sensors...
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JP3199103B2 |
PURPOSE: To provide a differential pressure measuring device which has enhanced input/output hysteresis characteristics and excessive pressure hysteresis characteristics. CONSTITUTION: The differential pressure measuring device is equipp...
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JP3196088B2 |
PURPOSE: To surely detect even a minute differential pressure, ensure a stable operation, reduce size and cost, further, eliminate a trouble such as contact failure, and enhance durability and reliability. CONSTITUTION: A differential pr...
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JP2001208630A |
To provide an easy-to-reuse and eco-friendly differential pressure measuring instrument.This differential pressure measuring instrument is equipped with liquid-separating diaphragms and liquid-contacting diaphragms. The liquid- separatin...
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JP2001208624A |
To provide a method and an instrument for pressure measurement capable of accurately measuring pressure in a pit-type tan by using a differential pressure type pressure gage.Compressed air with a pressure slightly higher than the pressur...
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JP2001208632A |
To provide a differential pressure measuring device which is easily reused and friendly to global environment.This differential pressure measuring device comprising liquid- separating diaphragms which are each provided at both sides of a...
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JP2001208631A |
To provide a differential pressure measuring device capable of reducing a production cost and providing a low-price by a simple construction and a reduction of component numbers.A differential pressure measuring device comprises a seal d...
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JP2001208629A |
To provide a differential pressure measuring instrument with an improved hydrogen infiltration preventing characteristic.This differential pressure measuring instrument is equipped with liquid-separating diaphragms and liquid-contacting ...
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JP3190337B2 |
In a two wire transmitter, a capacitive sensor senses differential pressure and provides a differential pressure signal based on the differential pressure sensed. The differential pressure signal varies with variations in static pressure...
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JP2001194142A |
To provide a new water level difference measuring apparatus using an optical fiber, making it possible to compare water level differences at two points easily and advantageously in terms of system construction. Water is introduced into f...
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JP3188621B2 |
To provide a pressure receiving flange capable of pertinently coping even with flowrate measurement for a high temperature corrosive fluid, extending the service life thereof as a whole, and realizing cost reduction. A pressure receiving...
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JP3185956B2 |
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...
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JP2001176721A |
To solve the problem where proper flow rate for freezing mixture cooling a superconducting coil, in which conventionally since the ratio between gas phase and liquid phase of freezing mixture flowing in a superconducting coil is unknown,...
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JP3180512B2 |
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...
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JP3178564B2 |
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...
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JP3174058B2 |
A transmitter with a flame arresting header senses a pressure of a process fluid with a diaphragm which is sealed to the header. The diaphragm transfers the pressure of the process fluid acting an outer surface of the diaphragm to a fill...
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JP3175874B2 |
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...
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JP3173272B2 |
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 ...
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JP3169669B2 |
A differential pressure switch assembly for low pressure applications permitting accurate "in field" set pointing of same, comprising a capsulized instrument that includes housing high and low pressure sections defining in assembled rela...
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JP2001506509A |
An improved fluid management system for irrigation of a body cavity and in particular for use in arthroscopic surgery having a pressurized fluid circuit for supplying irrigation fluid and a vacuum fluid circuit for withdrawing waste flui...
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JP2001135689A |
To properly attain inspection of a microfine pattern by maintaining an environment in which inspection of a semiconductor wafer or the like is operated in a high clean level. A device main body 10 for inspecting a semiconductor wafer or ...
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JP3166477B2 |
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...
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JP3160796B2 |
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 ...
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JP3161641B2 |
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...
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JP3158913B2 |
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...
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JP2001099736A |
To provide an inexpensive, and chemically and physically stable pressure measuring device capable of preventing hydrogen permeation, even when a fluid to be measured includes hydrogen at a high temperature. In this pressure measuring dev...
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JP3154264B2 |
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...
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JP3154267B2 |
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...
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JP2001091397A |
To provide a method for easily measuring the airtightness of a building without requiring exclusive airtightness measurement facilities, or the like. In the method for measuring the airtightness of a unit-type building 1 according to pre...
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JP2001091392A |
To provide a differential pressure transmitter that has a small number of parts and can be easily maintained. In the differential pressure transmitter equipping with first and second pressure reception chambers 201 and 202 for transmitti...
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