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JP3423686 |
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...
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JP2003121283 |
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...
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JP3421011 |
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...
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JP2003106921 |
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 ...
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JP2003098023 |
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 ...
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JP3409109 |
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 ...
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JP2003083830 |
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...
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JP2003075464 |
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...
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JP2003065868 |
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 ...
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JP2003065869 |
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 ...
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JP3402354 |
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...
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JP2003049958 |
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 ...
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JP2003049957 |
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...
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JP2003042878 |
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...
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JP2003042879 |
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 ...
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JP2003042881 |
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...
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JP2003043059 |
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...
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JP2003028741 |
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...
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JP2003028742 |
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...
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JP2003021565 |
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...
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JP3388256 |
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...
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JP3386626 |
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...
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JP2003004568 |
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...
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JP2002357499 |
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...
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JP3378105 |
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...
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JP2002323396 |
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...
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JP2002323397 |
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...
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JP2002310835 |
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...
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JP3353214 |
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...
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JP2002277337 |
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...
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JP2002277339 |
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...
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JP3349131 |
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...
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JP2002257660 |
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...
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JP3344138 |
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...
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JP2002236084 |
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...
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JP2002206980 |
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 ...
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JP2002188972 |
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...
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JP2002174561 |
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 ...
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JP3318804 |
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...
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JP3314349 |
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...
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JP3314538 |
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...
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JP2002156307 |
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...
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JP3309583 |
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...
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JP3309577 |
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...
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JP2002148096 |
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...
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JP3307538 |
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...
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JP3305800 |
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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JP2002131094 |
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 ...
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JP3299715 |
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...
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JP2002107258 |
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...
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