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Matches 501 - 550 out of 686

Document Document Title
JP06018348
PURPOSE: To reduce gas generation rate out of a meter itself and power consumption and improve the soft X-ray limit. CONSTITUTION: Semisphere concave part 11 is provided in the center of a disk shape flange 10 and gold is plated on the s...  
JP05306962
PURPOSE: To ensure reproducibility and stability of sensitivity by fixing the path of an electron directed from a cathode toward an electron collecting means. CONSTITUTION: A tubular object is provided with an external electrode 12 and a...  
JP05288628
PURPOSE: To obtain an improved hot cathode ionization pressure gauge. CONSTITUTION: The hot cathode ionization pressure gauge comprises a hot cathode filament 10, a diaphragm-like control electrode 12, an acceleration electrode 14 and an...  
JP05264389
PURPOSE: To obtain an improved inversion magnetron type cold cathode ionization vacuum gauge. CONSTITUTION: The ionization vacuum gauge having a vacuum gauge head comprises an outer cathode sleeve 1 having an inlet 2 communicating with t...  
JP05203524
PURPOSE: To enhance the measuring accuracy of a vacuum meter, to keep sensitivity in repeated measurement and to reproduce sensitivity between a plurality of vacuum meters by selecting meter sensitivity fluctuating by the condition of th...  
JP05094792
PURPOSE: To measure the vacuum degree of an ion source highly sensitively and highly precisely without using an additional vacuum gauge by installing a microchannel plate in a part of an electrode against which ions strike, detecting and...  
JP05062569
PURPOSE: To make sensing free from influence of an eventual switching surge, etc., and at a low degree of vacuum by coupling a light emission part with a light reception part and a vacuum part of a vacuum switch apparatus through a photo...  
JP05021037
PURPOSE: To provide a vacuum gauge capable of utilizing an ultra-high vacuum or extreme-high vacuum and having simple structure. CONSTITUTION: A needlelike cathode 3 having a tip curvature radius of 1μm or less and an anode 2 opposite t...  
JP05001964
PURPOSE: To provide a vacuum leak testing device-capable of performing a leak test automatically and efficiently in a short time. CONSTITUTION: The degrees of vacuum are measured by multiple vacuum gauges 7 fitted to a vacuum tank 1 and ...  
JP04278430
PURPOSE: To provide a vacuum gauge having two integrated circuits connected in a half bridge circuit for indicating the pressure reduction of gas due to a change in the thermal conductivity of gas. CONSTITUTION: One of two integrated cir...  
JP04196038
PURPOSE: To prevent system-down when a welding process by attaching a cover having a sealing mechanism to a vacuum gage sensor connecting part upon measurement of the degree of vacuum in an electron gun. CONSTITUTION: Although the degree...  
JP04160357
PURPOSE: To calibrate a quadruplex electrode mass analyser using gas of known concn. by setting an analyzing chamber and a piping system to the background of an ultrahigh vacuum region. CONSTITUTION: At first, an analyzing chamber 2 and ...  
JP04132131
PURPOSE: To predict the life expectancy of a vacuum bulb which is in the state of being mounted on a vacuum circuit breaker, by controlling to a specific range the rising time constant of the pulse electric current of a large electric cu...  
JP04087231
PURPOSE: To easily and precisely detect vacuum deterioration by measuring an electromotive force generated by a difference in oxygen partial pressure between both sensitive surfaces of an oxygen sensor by a measuring instrument to detect...  
JP03280615
PURPOSE: To generate a large pulse current whose width is variable by generat ing sequentially a pulse from plural pulse generating circuits each filter element consists of coils and capacitors. CONSTITUTION: The generator is provided wi...  
JP03238334
PURPOSE: To fix the pressure of a gas by bringing a microbridge construction having a resistor sensor film in proximity to a heater film supported by a board and operated electrically into contact with a fuel gas to be detected, and meas...  
JP03223418
PURPOSE: To exactly measure the vacuum degree in a furnace body without errors by selecting plural vacuum gage sensors mounted to the furnace body by the operation of a changeover valve and communicating these sensors with the inside of ...  
JP03215727
PURPOSE: To make reliable usage possible even where the distance between a measurement place and a monitoring place is relatively long by constituting a measurement value detector as a transmitter. CONSTITUTION: A transmitter 1 of a meas...  
JP03195935
PURPOSE: To detect leakage from an object to be tested in a testing container by using a pump device incorporating a mass spectrometer, a primary vacuum pump, and a spiro-molecular pump and making the atoms of a rare gas to flow toward t...  
JP03068441
PURPOSE: To sufficiently degas by positively charging the metallic wall and bringing the electrons from the hot cathode of a vacuum gauge into collision with the inner wall of a metallic wall. CONSTITUTION: A heating electric power sourc...  
JP03042534
PURPOSE: To produce one or more output signal suitable for processing in a microprocessor by providing a comparator with a signal feedback loop having a digital/analog(DA) signal converter. CONSTITUTION: A heat flow 1 is added by an adde...  
JP03041297
PURPOSE: To improve maintainability in vacuum insulation piping for forming a insulation vacuum layer around an internal pipe for moving ultra low tempera ture fluid by means of an external pipe by providing a means to check the insulati...  
JP02307043
PURPOSE: To supply a gas component in a wide range of pressure without requiring a pressure lowering stage by leading a gas generated in a vacuum chamber to an optical excitation and analyzing part through a connection part. CONSTITUTION...  
JP02266242
PURPOSE: To provide an inexpensive tuning fork quartz pressure gauge which is constructed in a solid structure, can limit the influence of interference, and can measure pressure with high accuracy by providing a mounting and supporting s...  
JP02266243
PURPOSE: To enable a pressure gauge to measure the pressure of a gas without relying much upon the type of the gas by measuring signals from a heat conductivity gauge and a gas abrasion gauge and processing the measured results as a comm...  
JP02228535
PURPOSE: To perform the substantial compensation depending upon the temperature of a resonance frequency by combining with the output signal of a measured crystal and the output signal of a reference crystal. CONSTITUTION: Since the pres...  
JP02158029
PURPOSE: To detect a reduction in degree of vacuum of a vacuum interrupter in a position separated from the vacuum interrupter by leading a discharge light generated at the time of reducing the degree of vacuum of the vacuum interrupter ...  
JP02158028
PURPOSE: To detect a reduction in degree of vacuum certainly with no attenuation in an optical fiber by detecting a light by a discharge caused on either of the fixed side or the movable side in the leaf initial time of the reduction in ...  
JP02103843
PURPOSE: To enable constant measurement of a vacuum degree curve by providing a contactor wherein a brush and a contact contact with each other, which makes a vacuum element and a vacuum gauge conductive when the rotary part is retating,...  
JP02010165
PURPOSE: To prevent the occurrence of a conversion error of a current-voltage converting circuit and to permit it to be used in full dynamic range by providing a guard element connected with the transistors of a PNP and NPN in parallel a...  
JP01301993
PURPOSE: To carry out vacuum measurement with molecular density at a high level by installing a filament and an ion collector inside the spatial portion in a circumferential groove provided on the rotary cylinder side of a screw pump. CO...  
JP01277698
PURPOSE: To make a working mode in an optional state selectable by making a second mounting part of a second vacuum pump free of attachment or detachment to or from a first mounting part of a first vacuum pump. CONSTITUTION: A mounting h...  
JP63264833
PURPOSE: To prevent the erroneous detection by receiving the signal wave-form caused by the electric discharge occurring in the fixed region and obtained by an antenna as one wave-form and counting the number of them to judge the defecti...  
JP63176694
PURPOSE: To eliminate the necessity for providing a vacuum gage, by obtaining a degree of vacuum in a turbo molecular pump from a phase difference between a current and voltage in an induction motor, which drives a rotor, to be displayed...  
JP63016538
PURPOSE: To make the degree of vacuum in and around a sample part or the like inside a scope measurable without deteriorating the capacity of the electron microscope, by setting up the specified electrode group in a vacuum measuring spot...  
JP62299735
PURPOSE: To obtain a small-sized, stable sensor by forming a heat radiation layer on the 1st optical waveguide formed on a substrate and a heat insulation layer on the 2nd optical waveguide, and supplying light beams which have a specifi...  
JP62287126
PURPOSE: To obtain a power source of simple constitution for a grid which is small in power consumption by adding a switch to the charging circuit of a triple voltage rectifying circuit and enabling the triple voltage rectifying circuit ...  
JP62218834
PURPOSE: To measure pressure consistently from atmospheric pressure to superhigh vacuum area with a small single type apparatus, by carrying a mechanical vibrator type manometer and an ionization type manometer on a single flange while a...  
JP62211534
PURPOSE: To improve the reliability and to realize sufficiently practical use in terms of economy by providing a gas concentration switch with plural operation set values which differ stepwise and monitoring the operation time between re...  
JP62185139
PURPOSE: To enable the monitoring of vacuum free from effecting influence on shut down performance by the start of discharge within a discharge tube, by connecting a discharge tube which starts a discharge at a higher vacuum than that wi...  
JP62182636
PURPOSE: To extremely reduce a measuring error due to the change in the temp. of a diaphragm type vacuum gauge, by covering a gauge frame body with a shield frame body through a vacuum space. CONSTITUTION: A gauge frame body 1 is covered...  
JP62145138
PURPOSE: To measure the pressure from an atm. pressure region up to a high vacuum region with one kind of vacuum gage by making use of the moisture monitoring effect that the pulverized particle film of metallic titanium on a crystal res...  
JP62144037
PURPOSE: To achieve a higher impact resistance, by providing a protective circuit adapted to protect a vibrating circuit from abnormally high voltage and large current by discharging between a vibrating electrode and the vibrating circui...  
JP62137533
PURPOSE: To enable the measurement of vacuum pressure of 102W1-5Torr, by providing a driving means of a vibration body and a means of detecting the position thereof on a vibration plate of tuning fork type vibrator comprising a parallel ...  
JP62049232
PURPOSE: To enable the measurement of vacuum of a vacuum working chamber even during the bleeding of a gas from an ion collector, by arranging an introduction bar connected to a current introducing section outside the vacuum at both ends...  
JP62043530
PURPOSE: To positively detect the lowering of a vacuum degree and to enable the detection at a point in time while the vacuum degree is still high, by detecting discharge light at the time of discharge in a first vacuum gap with the ligh...  
JP62024122
PURPOSE: To enable accurate pressure measurement, by surrounding a gauge bowl with a conducting screen of the earth potential to eliminate mutual interfer ence with other devices during the use of an ion gauge bulb. CONSTITUTION: A filam...  
JP62019729
PURPOSE: To measure the gaseous pressure in a device without contacting by measuring the emission intensity of the specific chemical species in plasma. CONSTITUTION: The device is constituted of an interference filter 5 which allows the ...  
JP61296231
PURPOSE: To enable accurate and efficient inspection, by applying the output of a high frequency generator to an article to be inspected and judging the degree of discharge generated at the time of the application of said output on the b...  
JP61278732
PURPOSE: To make operability and responsibility satisfactory by employing an optical fiber as vibrating members, leading the rays of light in the interior of the optical fiber, emitting it out of the other end and detecting optically the...  

Matches 501 - 550 out of 686