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Patent Searching and Data


Matches 851 - 900 out of 3,722

Document Document Title
JP3415846B2  
JP2003156401A
To provide an inexpensive device for measuring differential pressure which has a detection function for an anomaly of a pressure part such as failure of liquid-contact diaphragms or permeation of gaseous hydrogen into a pressure room.The...  
JP3410095B2  
JP2003149112A
To provide a differential pressure type gas chromatograph detecting device with low noise.In this invention, a detecting flow path 5 respectively leading to a dummy column 3 used for detection and to the detecting side of a differential ...  
JP3408813B2  
JP2003130746A
To obtain a remote seal type differential pressure transmitter that can easily remove and exchange each component in an apparatus and at the same time can cope with also a diversified flange standard.In the remote seal type differential ...  
JP3423686B2
To protect a pressure measuring cell against interference in a pressure measuring device having a casing and the pressure measuring cell arranged in it. This pressure measuring cell is provided with a converter for converting the displac...  
JP2003121283A
To provide a process connector capable of preventing the jam or coagulation of a measuring fluid in a differential pressure measuring device.This process connector is provided with: two pipe connection openings formed in a process connec...  
JP3399536B2  
JP3421011B2
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...  
JP2003106921A
To simplify assembly configuration in a pressure sensor device constituted by assembling a sensor element for detecting pressure on a circuit board.This pressure sensor device is provided with the circuit board 10, the sensor element 20 ...  
JP2003098023A
To provide a pressure sensor for measuring the pressure by converting the pressure into the stroke quantity instead of pressure measurement using a strain gage.In this pressure sensor, a spool 3 is provided in a pressure conversion part ...  
JP3409109B2
To improve durability against expansion and shrinkage of a component in a pressure sensor where a semiconductor pressure sensor body is mounted to a circuit substrate in a body case. A connection terminal 11 that projects from a package ...  
JP2003083830A
To calculate a speed of response of a pressure transmitting medium regardless of a viscosity, by calculating the speed of response based on temperature data of a capillary tube in consideration of the viscosity of the pressure transmitti...  
JP2003075464A
To provide an optical flow direction sensor that can detect the flowing direction of water, etc., when the water flows by detecting the pressure difference caused by the flow velocity of the water on the upstream side and downstream side...  
JP3384736B2  
JP3384457B2  
JP2003065869A
To provide a small-sized and highly-sensitive pressure detection device capable of detecting the outside pressure accurately over a long period.This package for the pressure detection device comprises a ceramic substrate 1 having plural ...  
JP2003065868A
To provide a small-sized and highly-sensitive pressure detection device capable of detecting the outside pressure accurately.This package for the pressure detection device is equipped with an insulating substrate 1 having a loading part ...  
JP3402354B2
To improve corrosion resistance and durability of a differential pressure-measuring apparatus by providing a main body block, a doughnut- shaped flange part, a cylindrical protecting cover body of tantalum covering cylindrical two buffer...  
JP3379511B2  
JP2003049957A
To provide an opening and closing valve of a connecting passage for a differential pressure detector capable of being easily operated with a simple structure at a low cost. A high pressure side connecting passage 2 and a low pressure sid...  
JP2003049958A
To provide an opening and closing valve of a connecting passage for a differential pressure detector capable of being easily operated with a simple structure at a low cost. A high pressure side connecting passage 2 extending from a high ...  
JP2003042878A
To provide a pressure sensor capable of facilitating manufacture, obtaining satisfactory temperature characteristics and a wide pressure measurement range, and making a package compact. A differential pressure sensor chip 4 is provided w...  
JP2003043059A
To provide an optical flow-direction sensor with which the flow direction of running water flowing through a gutter gate, a gutter pipe or the like can be detected in a state that a gate is closed and which uses an optical fiber. The wat...  
JP2003042881A
To eliminate high-level noise of a communication bus connected to an integrated circuit via a multi-core cable. This process sensor module 100 includes a housing 104 with a first mounting part 106 to be rotation-freely joined to a corres...  
JP2003042879A
To improve sensor measurement accuracy and obtain quick responsivity. This sensor signal processing circuit is provided with a capacitance-type sensor part with characteristics which changes as a whole according to changes in a physical ...  
JP2003505688A  
JP3375804B2  
JP3374679B2  
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...  

Matches 851 - 900 out of 3,722