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JP07209120 |
PURPOSE: To prevent product damage and keep safety by protecting a capillary tube, and constituting a liquid-contact part to be adapted the process connection. CONSTITUTION: For sealant, silicone oil or fluorine-based oil with large comp...
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JP07198519 |
PURPOSE: To adjust the compliance with shift quantity by a barrier diaphragm, reduce the hysteresis to the minimum, and solve problems such as zero shift or span shift. CONSTITUTION: A center diaphragm 7 is provided in a manner to be sei...
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JP07190873 |
PURPOSE: To provide a simple and sturdy pressure sensor capable of giving the vibration of a bridge across diaphragms as a function of a pressure difference. CONSTITUTION: This differential pressure transducer has the first and the secon...
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JP07190874 |
PURPOSE: To simplify a pressure-sensitive sensor part and a cylindrical connection-part structure for a transmission part, to simplify a lead extraction structure at a sensor and to reduce the length of a sealed circuit from every pressu...
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JP07159307 |
PURPOSE: To eliminate a need of inspecting the clogging-up state of a filter and to prevent an accident due to the clogging-up of the filter by automatically finding the replacement time of the filter. CONSTITUTION: In an apparatus, a ga...
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JP07151628 |
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...
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JP07139977 |
PURPOSE: To install a differential pressure with a simple operation. CONSTITUTION: Pressure-guiding pipes 6a and 6b where flanges 7a and 7b are provided on pressure-guiding pipe connection holes 5a and 5b are aligned at the upstream and ...
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JP07140028 |
PURPOSE: To provide a semiconductor-capacitor type differential-pressure sensor, which can readily apply measuring pressure on a sensor. CONSTITUTION: The diaphragm of a very thin silicon substrate, which is displaced in compliance with ...
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JP07128170 |
PURPOSE: To lower output errors which are attributed to a gap generated at a contact part between a protective diaphragm and a main body due to a welding and will be caused by changes in ambient temperature and variations in introduction...
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JP07128171 |
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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JP07120338 |
PURPOSE: To measure stably by enduring an excessively large differential pressure from the high pressure side with the withstanding pressure, restricting a displacement of a center diaphragm to the low pressure side with a casing, and sh...
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JP07113707 |
PURPOSE: To accomplish highly precise measurement by providing a differential pressure detecting unit on a semiconductor base board and a static pressure detecting unit consisting of a V-shaped hole thin part, and a semiconductor strain ...
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JP07113709 |
PURPOSE: To dispense with troublesome adjustment, in which floating capacity having no concern with the diaphragm displacement in electrostatic capacities C1, C2 is compensated by using hardware such as a compensating condenser, so as to...
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JP07113710 |
PURPOSE: To provide an inexpensive and easily assembled pressure sensor, which can continuously detect a pressure and sharply responds to a minute pressure so as to accomplish highly precise detection. CONSTITUTION: A pressure sensor is ...
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JP07113711 |
PURPOSE: To divide the inside of a housing into a high pressure side chamber and a low pressure side chamber by means of the first center diaphragm with a silicon diaphragm so as to protect a sensor main body part from a momentary overpr...
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JP07113712 |
PURPOSE: To provide a highly precise differential pressure signal and to improve controlling precision of a plant by arranging a thin part forming a differential pressure sensor serving as a main strain sensor on a semiconductor base boa...
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JP07110278 |
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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 ...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 ...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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