Abstract: A method for evaluating a mass spectrometry device includes: by a mass spectrometry device, performing mass spectrometry of an ester of phthalic acid and detecting a plurality of types of ions produced by dissociation of the ester of phthalic acid; and obtaining information concerning whether the mass spectrometry device is in a state suitable for analysis, based on a ratio of intensities of the plurality of types of ions detected.

Abstract: A power conversion apparatus includes: a cooling air passage defined with cooling fins of upper and lower converters and cooling fins of an inverter opposed to each other; upper and lower blowing fans provided upstream of the cooling air passage; and upper and lower sucking fans provided downstream of the cooling air passage and at positions offset from the converters. The blowing fans are provided for supplying cooling air from upstream of the cooling air passage, and the sucking fans are provided for discharging air from within a casing of the apparatus to the outside.

Abstract: A power conversion apparatus includes: a cooling air passage defined with cooling fins of upper and lower converters and cooling fins of an inverter opposed to each other; upper and lower blowing fans provided upstream of the cooling air passage; and upper and lower sucking fans provided downstream of the cooling air passage and at positions offset from the converters. The blowing fans are provided for supplying cooling air from upstream of the cooling air passage, and the sucking fans are provided for discharging air from within a casing of the apparatus to the outside.

Abstract: A position regulating apparatus has a generator body made of an engine and a generator driven by the engine, and a frame surrounding the periphery of the generator body. The frame is provided with a bump stopper as a rod member. The bump stopper is attached to a housing of the engine and disposed horizontally. The bump stopper regulates the position in the horizontal direction of the generator body within a preset range. Receiving plates disposed so as to face both end faces of the stopper body are provided. The round bar as the body of the bump stopper has a crank shape which reduces an impact by generating bending moment.

Abstract: In order to suppress freezing of a water content within a breather tube, a heater (13) is arranged within a breather tube (11) joining a cylinder head cover (10) and an air cleaner (8). A main body of the breather tube (11) is constituted by a joint tube (18) arranged in a middle, and partial tubes (22, 23) connected to both ends thereof. The heater (13) has a heating element (14) corresponding to a heating element, and has a heater case (21) accommodating the heating element (14) in a state of being pinched by electrodes (15), and is arranged in a center portion of the joint 18. A slot (18a) for inserting the heater (13) is formed in the joint tube 18. A heat radiating body (20) extended along the breather tube (11) is joined to the heater case (21). An outer peripheral portion of the breather tube (11) is covered by an insulative outer tube (24).

Abstract: An engine operated generator is provided with an engine, a generator driven by the engine, and a power control unit for controlling the power generated by the generator. A fuel gas stored in fuel bottles set in a case for the engine operated generator, is supplied to the engine though a fuel pressure regulator. The fuel bottles and the fuel pressure regulator are disposed adjacent to the power control unit to enable heat exchange with the power control unit provided with an inverter. Thus, heat is mutually utilized between the power control unit and at least one of the fuel bottles as fuel receptacles and the fuel pressure regulator.

Abstract: In order to suppress freezing of a water content within a breather tube, a heater (13) is arranged within a breather tube (11) joining a cylinder head cover (10) and an air cleaner (8). A main body of the breather tube (11) is constituted by a joint tube (18) arranged in a middle, and partial tubes (22, 23) connected to both ends thereof. The heater (13) has a heating element (14) corresponding to a heating element, and has a heater case (21) accommodating the heating element (14) in a state of being pinched by electrodes (15), and is arranged in a center portion of the joint 18. A slot (18a) for inserting the heater (13) is formed in the joint tube 18. A heat radiating body (20) extended along the breather tube (11) is joined to the heater case (21). An outer peripheral portion of the breather tube (11) is covered by an insulative outer tube (24).

Abstract: An engine operated generator is provided with an engine, a generator driven by the engine, and a power control unit for controlling the power generated by the generator. A fuel gas stored in fuel bottles set in a case for the engine operated generator, is supplied to the engine though a fuel pressure regulator. The fuel bottles and the fuel pressure regulator are disposed adjacent to the power control unit to enable heat exchange with the power control unit provided with an inverter. Thus, heat is mutually utilized between the power control unit and at least one of the fuel bottles as fuel receptacles and the fuel pressure regulator.

Abstract: Depending on the RF driving voltage amplitude value and the frequency of each frequency component of wideband auxiliary AC voltages, the wideband auxiliary AC voltage comprising plural different frequency components is optimized so that undesired ions having mass-to-charge ratios within the required range will be resonantly ejected from the ion trap electrodes.

Abstract: An uploading computer, a host computer and a viewing computer are interconnected through communication lines. The host computer hierarchizes software information received from the uploading computer by field, category and software product to be stored in software information memory. In response to search information inputted from the viewing computer, the software information is displayed as search results on the viewing computer. The software information hierarchized in the order of field, category and software product is retrieved quickly and displayed immediately to browsed efficiently.

Abstract: Depending on the RF driving voltage amplitude value and the frequency of each frequency component of wideband auxiliary AC voltages, the wideband auxiliary AC voltage comprising plural different frequency components is optimized so that undesired ions having mass-to-charge ratios within the required range will be resonantly ejected from the ion trap electrodes.

Abstract: Depending on the RF driving voltage amplitude value and the frequency of each frequency component of wideband auxiliary AC voltages, the wideband auxiliary AC voltage comprising plural different frequency components is optimized so that undesired ions having mass-to-charge ratios within the required range will be resonantly ejected from the ion trap electrodes.

Abstract: Disclosed is a mass spectrometer capable of highly sensitively and highly efficiently measuring the masses of ions regardless of the polarity, mass numbers and energy of the ions. An ion beam transport unit (5), a conversion dynode (6) and a secondary electron detecting system (7) are disposed so that an acute angle is formed between the direction of travel of an ion beam striking on the conversion dynode (6), and a line (75) connecting the center (64) of a secondary electron exit (63) to the center (73) of a scintillator (71). The center axis (74) of the scintillator (71) lies between an end (52) of the ion transport unit (5) and the center axis (64) of the secondary electron exit (63). Since the secondary electron exit (63) is apart from an electric field created between the ion transport unit (5) and the scintillator (71), the secondary electrons are able to reach the scintillator (71) without being deflected.

Abstract: Depending on the RF driving voltage amplitude value and the frequency of each frequency component of wideband auxiliary AC voltages, the wideband auxiliary AC voltage comprising plural different frequency components is optimized so that undesired ions having mass-to-charge ratios within the required range will be resonantly ejected from the ion trap electrodes.

Abstract: The present invention provides an ion trap mass spectrometry method and its mass spectrometer of an internal ionization type for ejecting ions generated in a large amount when ionizing specimen gas or reagent gas by electron impact ionization (EI) or others in the ion trap from the space between the ion trap electrodes, trapping negative ions generated only in an extremely small amount in priority, and making an analysis in high sensitivity. During the ionization period for ionizing specimen gas or reagent gas by electron impact ionization (EI) or others in the ion trap, a static field is superimposed between the ion trap electrodes in addition to the RF field, and positive ions are made unstable and ejected from the space between the ion trap electrodes simultaneously with ionization, and negative ions generated only in an extremely small amount are trapped in priority, and a mass analysis is made.

Abstract: An uploading computer, a host computer and a viewing computer are interconnected through communication lines. The host computer hierarchizes software information received from the uploading computer by field, category and software product to be stored in software information memory. In response to search information inputted from the viewing computer, the software information is displayed as search results on the viewing computer. The software information hierarchized in the order of field, category and software product is retrieved quickly and displayed immediately to browsed efficiently.

Abstract: An numerical analysis time which is assigned to mass select one ion species having a specific mass-to-charge ratio mass selected is divided into the first part time and the second part time, and a dipole auxiliary electric field capable of spatially reducing a spread is superimposed in the first part time of the numerical analysis time and a quadrupole auxiliary voltage capable of rapidly emitting ions when position coordinates are large is superimposed in the second part of the time. Therefore, the initial spatial spread is reduced in the first part time and the trajectories of ions is rapidly amplified in the second part time, and the ions are emitted. Thus, the entire mass sweep time can be reduced and a high-resolution numerical analysis can be accelerated.

Abstract: A tubular insert with a small internal volume is disposed inside the vaporization chamber at the inlet of a capillary column of a gas chromatograph such that the sample with a solvent injected into the vaporization chamber is carried by a carrier gas through the insert into the column. The internal volume of the insert is such that the retention time of the carrier gas through the insert is less than 4 seconds. A heater is controlled to maintain the temperature inside the vaporization chamber within a specified range above the boiling point of the solvent as the sample is injected into the vaporization chamber, and this temperature is subsequently raised to a final temperature above the boiling points of the components to be analyzed. The carrier gas pressure is temporarily increased for better efficiency as the sample is injected.

Abstract: A sample separated through a pre-processor part having a gas chromatography (GC) or a liquid chromatography (LC) and a moving bed eliminating part is ionized by an ion source and mass-analyzed by a mass-analyzing part. The mass-analyzed ions are deflected and focused by a deflecting portion and a focusing portion in a deflecting and focusing part, and is detected by an ion detecting part. The result of detection is processed by a data processing part.

Abstract: In a mass analyzer, an acceleration voltage is applied to an ionization chamber in which a voltage to be applied to repeller electrodes to repel ions is generated with reference to the acceleration voltage and a repeller voltage source is linked with a controller by use of a photocoupler or the like such that the repeller voltage is adjusted with the repeller voltage source electrically insulated from the controller. The repeller voltage can be easily and automatically adjusted by use of a low-voltage control signal so as to obtain a sensitivity developing the maximum value of the quantity of detected ions and hence a qualitative or quantitative analysis of a sample can be achieved with a high sensitivity. The controller processes digital signals and appropriate parameters are stored in a memory. Each parameter is changed with the center of change set to an appropriate parameter previously used and consequently the automatic control is simplified.