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Patent Searching and Data


Matches 851 - 900 out of 3,692

Document Document Title
JP2003028741A
To enhance a yield in production of an electrical capacitance sensor device, or to enhance reliability when using it.This electrical capacitance sensor device 100 is provided with an electrostatic capacity type sensor 120 having physical...  
JP2003028742A
To preclude a differential pressure causing a measuring error from being caused when a sensor inside is balanced with the atmospheric pressure, and to prevent dew which is a cause of a trouble from being generated inside a sensor.This ba...  
JP2003503786A  
JP2003503785A  
JP2003021565A
To reduce the area of a lower electrode and to prevent drops in the sensitivity of an electrical capacitance type pressure sensor, which detects an applied pressure on the basis of a change in a capacitance across the lower electrode and...  
JP3388256B2
To provide a measuring device comprising such seal diaphragm part as improved for hydrogen permeation preventive characteristics, by covering the seal diaphragm part and a part of a seal ring with a gold plated film. Related to a seal di...  
JP3386626B2
PURPOSE: To obtain a leakage tester which can inspect an object to be tested for leakage at a high testing pneumatic pressure and, at the same time, can raise the sensitivity of a differential pressure detecting means for detecting leaka...  
JP2003004568A
To prevent flowout of internal gaseous components from a pressure variable space to a reference pressure space and to prevent the flowing of in the atmosphere the reverse direction even when a movable electrode is damaged.The pressure se...  
JP3362197B2  
JP2002544514A  
JP2002357499A
To provide a differential pressure measuring device of diaphragm seal type which can be easily assembled. This differential pressure measuring device of diaphragm seal type is provided with a diaphragm seal unit having a pressure receivi...  
JP3378105B2
PURPOSE: To detect failure of a check valve based on the flows of a fluid before and after the check valve in a system for supply water directly from a main pipe of city water to a high-rise building or the like. CONSTITUTION: In a syste...  
JP2002323396A
To provide a diaphragm seal type differential pressure measuring instrument with enhanced maintainability by facilitating the replacement of diaphragm seal unit portions.This diaphragm seal type differential pressure measuring instrument...  
JP2002323397A
To provide a diaphragm seal type differential pressure measuring instrument with enhanced maintainability, capable of providing a breakage alarm signal about a liquid-contact diaphragm.This diaphragm seal type differential pressure measu...  
JP2002536674A  
JP2002310835A
To provide a differential pressure measuring device excellent in measurement accuracy and maintainability.This differential pressure measuring device is provided with a base block and a wetted-surface diaphragm having one surface mounted...  
JP2002535118A  
JP3335688B2  
JP3329480B2  
JP3353214B2
PURPOSE: To suppress the variation of the zero point of a seal diaphragm and, at the same time, to prevent the breakage of the diaphragm by providing the components of a pressure transmitter by taking the center of gravity of the transmi...  
JP2002277339A
To provide a differential pressure measuring device capable of easily improving corrosion resistance.This differential pressure measuring device equipped with a base block and a wet diaphragm installed on one surface of the base block is...  
JP2002277337A
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 cente...  
JP2002531908A  
JP3325879B2  
JP3349131B2
To provide a released gas measuring device capable of precisely measuring the quantity of released gas of an object to be inspected in a short time. The device is provided with a master chamber 1, a chamber 2 for containing an object 3 t...  
JP2002257660A
To provide a diaphragm seal type differential pressure measuring device wherein re-assembling is easy, the maintenance cost is reduced, and re-assembly causes less variation in characteristics.The diaphragm seal type differential pressur...  
JP3344138B2
PURPOSE: To obtain a semiconductor composite sensor in which each semiconductor region keeps a unique potential by providing a semiconductor region, surrounding more than one piezoresistance, for every piezoresistance and arranging the s...  
JP2002527704A  
JP2002236084A
To provide a method and device for measuring the concentration of mixed suspended matter with high measurement accuracy and a wide measuring range, capable of real-time and continuous measurement and is easy to maintain and manage.In the...  
JP2002206980A
To provide a differential pressure measuring apparatus capable of preventing a pressure-receiving diaphragm from being deformed or damaged by washing.The differential pressure measuring apparatus includes a differential pressure capsule ...  
JP2002188972A
To provide a pressure controller having no restriction on an installation space, capable of monitoring the quantity of a pressure change of a pressure source, detecting that the pressure of the pressure source becomes a fixed value or hi...  
JP2002174561A
To improve measurement accuracy of a differential pressure P and to prevent abrupt changes in the output, due to the measurement failure of the capacitance of a sensor, without deterioration in response by using the measurement value of ...  
JP3318804B2
PURPOSE: To obtain high detection precision by making beam welding easier, so that a differential pressure sensor is miniaturized with the use of it, for reduced initial distortion of a diaphragm caused by welding end clamping torque. CO...  
JP3314349B2
To reduce permeation of hydrogen through a diaphragm by providing an intermediate layer composed of any one or a plurality of aluminum, copper, platinum and gold in the diaphragm while spreading substantially in parallel with the surface...  
JP3314538B2
PURPOSE: To detect an accurate value even when excessive pressure is applied from a process fluid by providing a differential pressure transmitter so that the pressure receiving direction of a center diaphragme is different from the pres...  
JP2002156307A
To provide a differential pressure type micro-leak detection method and a device capable of filling gas in a short time without generating the temperature difference between a test vessel and a reference vessel, and executing leak detect...  
JP3309577B2
PURPOSE: To accurately detect the differential pressure between a first diaphragm and second diaphragm by arranging the second diaphragm perpendicularly to the first diaphragm. CONSTITUTION: Since the welding point of an overload protect...  
JP3309583B2
PURPOSE: To improve vibration resistance and maintenance property with a compact configuration by providing a pressure-reception part, a signal processing part, and a display part on nearly the same axis and changing the relative positio...  
JP2002148096A
To provide a pressure sensor which can detect the pressure accurately with no restriction on the installing position in the casing, and a water level detector in which pressure variation in the casing causes no measurement error.In order...  
JP3307538B2
To realize an integrated pressure-difference flowmeter, having simple structure in which the measurement accuracy can be enhanced by suppressing the effect of pulsating component of a fluid to be measured. A fluid to be measured flows fr...  
JP3305800B2
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 ...  
JP2002131094A
To provide a system for measuring a settlement state when sea bottom reclamation work and earth and sand burying work are performed.In the settlement measuring system comprising at least two or more pressure gages, a first communicating ...  
JP2002513148A  
JP3299715B2
To provide a potential take-out structure for a chip in which the size can be reduced while avoiding electrical troubles. A pressure sensor 10 comprises an extending part 42 formed on a lower glass 40, and a signal take-out part 50 depos...  
JP2002107258A
To provide an artificial leak device capable of providing the relation between atmospheric pressure-converted leak quantity and change of detected pressure without determining a work capacity in an air leak tester and precisely and easil...  
JP2002090470A
To overcome the problem of a prior art such that the precision of position detection of a pig traveling in a duct becomes worse as the distance between a sound listening position and the pig exceeds several km when the pig 10 is tracked,...  
JP2002090246A
To provide a pressure detector by which the pressure difference between a pressure applied to a liquid and a pressure applied to a gas can be detected easily by a method wherein the pressure difference between an intake pressure and a fu...  
JP2002071494A
To provide a structure of a diaphragm coming into contact with a gas to be measured which prevents evils causing a bad influence by hydrogen molecules entering a pressure transferring liquid when the hydrogen molecules pass the diaphragm...  
JP2002071491A
To suppress the increase of the size of a recess part to the utmost and make the recess part passible to be appropriately filled with a sealing material in a pressure sensor having a pressure introducing hole formed at the bottom of the ...  
JP2002062210A
To discriminate the cause of an error by a display shape by optionally setting the display shape at time of error in a differential pressure-pressure transmitter.In this differential pressure-pressure transmitter having the output settin...  

Matches 851 - 900 out of 3,692