Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 901 - 950 out of 3,735

Document Document Title
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
(57) A summary solution means pressure sensor, a pressure transmitter, and the error compensation method in difference pressure measurement are offered. The equipment and the method of the present invention offer the improved error compe...  
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
(57) In order to test the integrity of the waterproof case (10) for the camera and the similar equipment which are used by summary underwater, the casing (10) equipped with the detector (20) is prepared. The air inside a casing is pressu...  
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
(57) Way summary low-molecular-weight hydrocarbon detects and supervises quality change of the fluid bed of the particulate solid changed into synthesis gas under existence of steam and oxygen, especially the fluid bed of a hot particula...  
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
(57) The bandwidth good compensation filter for summary process variable transmitters is offered. Solution means Process variable transmitter (10) which supplies the transmitter output showing the process variable (14) perceived by the s...  
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
(57) Including the first portion (2) of a summary, and the second portion (3), this second portion, About surrounding rotation of the axis of a bearing, to the first portion (2), 回動 is possible and into the first portion (2), The bea...  
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
(57) A pressure sensor and a transmitter equipped with the welding ring which has a summary rotation hinge part are offered. Solution The apparatus for process controls (10) which was adapted so that the output which directs the paramete...  
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...  
JP2002048665A
To heat and keep warm a pressure-receiving part efficiently with a heat transfer loss reduced.The inside of a cylindrical body 20 inserted to a pressure tap 18 of a sealed tank 1 is made a steam chamber 32. A steam injection opening 33 a...  
JP2002504676A
(57) Summary book invention is a sensor by which the movable アーマチャ operates based on the double differential capacitor which consists of the film (7) of a sensor which can be transformed, . It was located in membranous both sid...  
JP2002031578A
To provide a differential pressure measuring device used as a level gage, capable of reducing a facility cost.This differential pressure measuring device is equipped with a first connecting tube having one end connected to the high press...  
JP3271470B2
PURPOSE: To make a process sate detecting device compact and to enable a user to use the device in an atmosphere where explosive gas exists and in a high temperature area by inserting a soft member easy to be deformed in the gap between ...  
JP2002022585A
To provide a flange-mounting type differential pressure measuring apparatus having an enhanced temperature characteristic.The flange-mounting type differential pressure measuring apparatus includes a pressure sensor provided in a body, a...  
JP2002022586A
To make measurable differential pressure with high accuracy by preventing hydrogen gas from being diffused into diaphragms and released into sealed liquids to be bubbles.A first diaphragm 1 is fixed to a block 11 by welding or the like, ...  

Matches 901 - 950 out of 3,735