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JPH08193904A |
PURPOSE: To prevent a measuring diaphragm and a fixed electrode disposed oppositely thereto from being seized in the center thereof upon reception of an undue differential pressure. CONSTITUTION: Cylindrical recesses 9a are distributed a...
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JP2517467B2 |
In a capacitive pressure sensor and a method of manufacturing the same, first and second grooves are formed in one and the other surfaces of a substrate, respectively. A first sacrificial layer is embedded in the first groove. First insu...
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JPH08184519A |
PURPOSE: To sustain ventilation and waterproofness at a port opened to the atmosphere even for severe outer environment. CONSTITUTION: The pressure sensor comprises a housing 1 having a port 11 opened to the atmosphere, a pressure sensor...
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JPH08178782A |
PURPOSE: To improve the reliability of the measurement of a pressure and the facilitating of maintenance by enabling the judging of clogging of a lead pipe accurately by comparing a measured differential pressure measured by a differenti...
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JP2516103B2 |
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JP2515425B2 |
The differential pressure measuring apparatus comprises a single chamber differential pressure sensor filled with a fluid and having two measuring capacitors whose capacitances vary in opposite senses in response to the differential pres...
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JP2512220B2 |
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JP2511167B2 |
A restrictor element (4) serves for measuring the amount of a flowing medium flowing through an advance pipe (1), the pressure differential occurring in the process being measured by a differential pressure sensor (6). The differential p...
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JPH08166308A |
PURPOSE: To obtain a differential-pressure transmission apparatus in which a transmission-part side is separated easily from a pressure-receiving-part side in a maintenance and inspection operation or the like by a method wherein a bolt ...
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JPH08166309A |
PURPOSE: To obtain a differential-pressure measuring apparatus by which the clogging of a connecting pipe can be detected, whose reliability is high and whose maintenance and inspection operation is easy by a method wherein the output si...
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JPH08159903A |
PURPOSE: To obtain a differential-pressure detector in which a zero point is not drifted and which comprises a metal diaphragm used to detect the differential-pressure of a conductive fluid by forming an electrically insulating substance...
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JP2503290B2 |
There is provided a pressure measuring sensor having a diaphragm including a peripheral fixing portion so formed as to be fixed to a pressure measuring sensor proper and be thick, a pressure receiving portion responsive to a pressure to ...
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JPH08136382A |
PURPOSE: To improve static pressure characteristics. CONSTITUTION: The outer peripheral surface of a conventional cylindrical insulating body except both end parts is engraved shallowly. A thin cylindrical space 70a is formed in this man...
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JPH0894474A |
PURPOSE: To facilitate the manufacture by forming a porous ceramic film having high hardness on the pressure receiving side face of a detector body while protecting the seal diaphragm against undue pressure and preventing the overload hy...
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JPH0833334B2 |
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JPH0875584A |
PURPOSE: To reduce the cost of a device and to improve reliability by using a built-in uniform-pressure mechanism consisting of a uniform-pressure path, a connecting hole, a gate valve, and a stop valve for performing zero-point check. C...
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JPH0823515B2 |
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JPH0820327B2 |
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JPH0843230A |
PURPOSE: To prevent intrusion of hydrogen atoms into an sealing liquid after the atoms are diffused and permeate into a diaphragm by reducing or preventing the occurrence of the hydrogen atoms due to a local battery formed between a diap...
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JPH0843229A |
PURPOSE: To prevent electrochemical corrosion of a diaphragm by not forming any electric circuit between the diaphragm and a cover. CONSTITUTION: A seal diaphragm 6 and cover 20 which protects the diaphragm 6 are electrically insulated f...
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JPH0843225A |
PURPOSE: To generally solve the problem of short circuit by providing a thin insulating layer formed of a ceramic material or a heat resisting glass of a base on a glass layer covering an electrode of the base. CONSTITUTION: A first meta...
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JPH0843228A |
PURPOSE: To prevent the hysteresis of a diaphragm from becoming larger due to stresses concentrated to the fulcrum section of the diaphragm. CONSTITUTION: Ceramic films 31 and 32 are respectively formed on both surfaces of the fulcrum se...
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JPH0814520B2 |
Methods and apparatus by which a transducer (20) is employed to create a digital signal representing numerically the value of a changeable physical parameter. The signal from the transducer is subject to large and unpredictable amounts o...
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JPH0821776A |
PURPOSE: To prevent a fluid to be detected from flowing out from a package when a gauge is broken, by storing a detection gauge for detecting a low pressure of a gas in a plastic package and a detection gauge for detecting a high pressur...
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JPH0815068A |
PURPOSE: To prevent a sticking phenomena wherein a measuring diaphragm is stuck to a fixing electrode opposed thereto in the central section thereof when it receives a great differential pressure. CONSTITUTION: Small projection sections ...
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JPH081468Y2 |
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JPH0811793A |
PURPOSE: To predict wing collapse in advance on behalf of a pilot to generate an alarm by detecting effective ram pressure from the difference between detected atmospheric pressure and ram pressure in a wing, and generating an alarm in t...
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JPH085492A |
PURPOSE: To reduce the cost and improve the accuracy by attaching a cover flange connection to a cover flange part in place of at least one piece of cover flanges. CONSTITUTION: A level gauge unit 11 is attached to a cover flange part 3 ...
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JPH085490A |
PURPOSE: To provide a pressure difference detector, which is simple in structure and used for ON-OFF operation or is also applicable to a measure of quantitative pressure difference detection, by detecting the displacement in the cylinde...
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JPH085491A |
PURPOSE: To provide a pressure sensor which can output the small differential pressure fluctuation value from rated pressure, separately from the gauge pressure value of measure-target equipment, as the output of a sensor. CONSTITUTION: ...
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JPH085489A |
PURPOSE: To secure pressure resistance and explosion proof and besides, make possible downsizing by attaching an indicator case to an amplifier case, in close vicinity to an amplifier part, and taking in wiring directly from the amplifie...
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JPH0755478Y2 |
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JPH0752601Y2 |
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JPH07111388B2 |
PURPOSE:To enable flow to be detected highly accurately by forming two piezoelectric element-holding surfaces in a pair which hold a piezoelectric element on a slant surface. CONSTITUTION:A piezoelectric element 102 is formed as merely a...
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JPH0752602Y2 |
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JPH0752599Y2 |
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JPH0752600Y2 |
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JPH07306107A |
PURPOSE: To measure the absolute value of pressure without a temperature sensor and a temperature correcting sensor and without the effect of temperature change. CONSTITUTION: One surface of a signal-crystal silicon substrate is etched, ...
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JPH0749397Y2 |
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JPH0749398Y2 |
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JPH07294355A |
PURPOSE: To prevent the destruction of pressure sensing element due.to adhesion of dust, mad, water, etc., to the pressure sensing element, prevent the lowering of measuring accuracy and prevent the discharge of measured pressure medium ...
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JPH07286926A |
PURPOSE: To provide a high-withstand-pressure, and low-differential-pressure switch which is small and inexpensive, for detecting a low differential pressure and sampling it as a switching signal by directly comparing high fluid pressure...
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JPH07280685A |
PURPOSE: To prevent the adheson of high-temperature fine powders on an opening section opened into a high-temperature fine-powder flow path at one end of a drawing pipe without requiring a special device and labor hours. CONSTITUTION: A ...
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JPH07280678A |
PURPOSE: To form a compact switching/displaying deivce of building block principle which can be easily assembled, and has durability to the high pressure, and cost effective, by partitioning various kinds of pressure bands by a roller di...
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JPH0744000U |
[Purpose] It is to provide a small and highly reliable differential pressure indicator. [Constitution] In the present invention, the shaft (14) and; the first end portion (17) provided around the shaft (14) is fixed to the shaft, and the...
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JPH07260614A |
PURPOSE: To provide a durable and precise pressure sensor detecting an accurate pressure over a wide temperature range. CONSTITUTION: A pressure sensor 100 is provided with a housing 200 provided with a fluid port 240 through which the f...
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JPH0795114B2 |
Both an apparatus (1) and a method for monitoring the pressure within a cask (5) containing radioactive materials. The apparatus (1) comprises a differential pressure sensor (55) sealingly connected to a bore (41) that penetrates through...
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JPH0742486Y2 |
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JPH07243930A |
PURPOSE: To provide an installation mechanism of a differential pressure transmitter improving a valve unit for installation and facilitating the switching between the differential pressure measurement and zero point adjustment. CONSTITU...
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JPH07243931A |
PURPOSE: To provide a high-accuracy, small-sized fine differential pressure sensor by providing a moving electrode formed at the center position of a diaphragm of which periphery section is fixed to a housing, a fixed electrode formed to...
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