Abstract: Disclosed is a sensitive glass film for a pH electrode, which is not deteriorated in its glass strength or pH-measuring function, which is hardly stained, and from which any stain can be removed easily. Also disclosed is a pH electrode having the sensitive glass film. A microparticle comprising rutile-type or brookite-type titanium dioxide or a microparticle comprising amorphous titanium dioxide is adhered directly on the glass film surface of a sensitive glass film for a pH electrode.

Abstract: A spectroscopic ellipsometer can compare data different in a measurement condition and facilitate setting an initial value of fitting data even for an inexperienced operator such as a beginner. The spectroscopic ellipsometer includes a reference data storage part storing therein reference data to be compared with measurement data, a conversion operation part converting the measurement data or the reference data into comparable data, so that the measurement data can be compared with the reference data, and a comparison and determination part comparing the measurement data with the reference data made comparable by the conversion operation part with each other and determining a coincidence between the measurement data and the reference data.

Abstract: In order to possibly suppress noise components contained in a signal value of a detection signal for use in controlling a rate of rotations or speed, an driving controller receives a detection signal in accordance with a rate of rotations or speed and acquires a signal value of the detection signal every predetermined sampling time, and controls an actuator at control timings with predetermined intervals using the signal value, so that the rate of rotations or speed is controlled at each of the control timings in accordance with variation aspects of a plurality of signal values acquired before the outstanding control timing.

Abstract: This invention is to obtain a highly reliable measurement result by correcting a hydrogen concentration by the use of a concentration of oxygen contained in a measurement gas, and the hydrogen concentration measuring instrument comprises a hydrogen concentration measuring part 2 that measures the concentration of hydrogen contained in the measurement gas flowing in a flow channel, an oxygen concentration measuring unit 3 that measures a concentration of oxygen contained in the measurement gas, and a concentration correcting unit 73 that corrects the concentration of hydrogen obtained by the hydrogen concentration measuring part 2 by the use of the concentration of oxygen obtained by the oxygen concentration measuring unit 3.

Abstract: In order to improve a measurement accuracy of an EGR ratio and to downsize the device and to save labor, the EGR ratio measuring device comprises a pair of nondispersive infrared gas analyzers (11), (12) that have a function of correcting a water influence and that can measure a concentration of CO2 in a gas containing water, an intake air introduction line (L1) that is connected to an intake air pipe (INT) of an internal combustion engine (EG) and that introduces a part of the intake air into one nondispersive infrared gas analyzer (11) without removing the water, an exhaust gas introduction line (L2) that is connected to an exhaust gas pipe (EXT) of the internal combustion engine (EG) and that introduces a part of the exhaust gas into the other nondispersive infrared gas analyzer (12) without removing the water, and a temperature adjusting mechanism (81a˜81c), (82a˜82c) that keeps a temperature of whole of the introduction lines (L1), (L2) and a temperature of the nondispersive infrared gas analyzers (11),

Abstract: To prevent loss of control of a pressure of a source gas within a movable range of a control valve, a source gas concentration control system is provided. The system may include a first valve that is provided on an outlet line, a concentration measurement part that measures a concentration of the source gas in mixed gas, and a concentration control part that controls a stroke of the first valve such that the measured concentration of the source gas becomes equal to a predetermined concentration setting. The measured concentration may be measured in the concentration measurement part. The system may further include a temperature controller that controls a temperature inside the tank to meet a temperature setting, and a temperature setting part that sets the temperature setting of the temperature controller.

Abstract: Disclosed is a particulate matter measurement device that continuously measures changes in a mass of PM contained in an exhaust gas under dynamic operating conditions, such as road travel, with a simple construction. The device dilutes and separates the flow of exhaust gas while an engine is operating. The particulate matters contained in one of the exhaust gas streams is collected by a collection filter to measure the mass and the remainder is measured by a mass-related value measurement means so that physical properties which indirectly indicate the mass of the particulate matters contained in the exhaust gas are continuously measured as time series change data. Then, time series change data for the mass of the particulate matter are found based on correlations of the individual measured data.

Abstract: An object of this invention is to diminish a ratio of a concentration of N2O in the dilution air to a concentration of N2O in the measurement object gas diluted by the dilution air as much as possible by removing N2O in a dilution air so that a measurement accuracy of a concentration of N2O in a measurement object gas can be improved. A heater 33 that applies heat to the dilution air, a Pd catalyst 341 and a Pt catalyst 342 are arranged in this order on a flow channel where a dilution air used for diluting the measurement object gas flows, and N2O in the dilution air is oxidized to NOx or reduced to N2 by the Pd catalyst 341 and the Pt catalyst 342.

Abstract: In the present invention, a fluorescent X-ray analysis is made for a sample such as a liquid fuel including an object component such as sulfur. A background related to scattered X-rays and a system peak is subtracted from a fluorescent X-ray intensity of the object component, which is obtained from a spectrum acquired by the fluorescent X-ray analysis. A correction corresponding to the composition of the sample is performed for the fluorescent X-ray intensity obtained by subtracting the background. A calibration curve representing the relation between a value, which is obtained after performing the correction for the fluorescent X-ray intensity obtained by subtracting the background, and a concentration of the object component is preset. The concentration of the object component in the sample is calculated on the basis of the calibration curve.

Abstract: The present invention relates to a catalyst for reducing mercury, which comprises a reagent comprising any of the sulfites of potassium, sodium, calcium and magnesium, or any of the phosphates thereof, or a combination of them, as a main reagent of a catalyst component. And the present invention relates to the catalyst for reducing mercury, wherein the catalyst component is mixed with a different salt as an agent for inhibiting crystallization of the catalyst component.

Abstract: A substrate measuring stage used for a curve measuring system measuring a curve of the substrate and an ordinary measuring system measuring each of or one of a physical quantity and a chemical quantity of the substrate other than the curve, may include the mounting board movable between an ordinary measurement position for the ordinary measuring system and a retreat position away from and downward of the ordinary measurement position; the plurality of support pins insertable into through-holes provided in the mounting board and fixed to a curve measurement position for the curve measuring system; and a drive mechanism vertically moving the mounting board between the ordinary measurement position and the retreat position. The curve measurement position is set between the ordinary measurement position and the retreat position.

Abstract: This invention is to make the detection sensitivities as even as possible among a plurality of specimens to be inspected in an analyzer that leads light transmitted from the plurality of specimens to be inspected to a single spectrometer via optical fibers, the analyzer includes first and second light guide members provided for every first and second specimen to be inspected so as to lead the light obtained from each of the specimens to be inspected to a photo-detecting part, and light projection side end portions of a plurality of optical fiber elements composing the first and second light guide members are arranged in mixture.

Abstract: In a spectroscopic reflectometer, in order to make it possible to omit a supplementary measurement (specifically, measurement of a calibration sample) which has been needed every time a light reflectance of an inspection work is measured to promote the reduction in measurement time and simplification in measurement configuration, an internal reflection mechanism having a constant light reflectance is arranged inside a head so that light reflected by the internal reflection mechanism is received by a photo-detector, whereby the light reflectance of the inspection work is calculated based on an output value of the photo-detector in a state of having substantially no light introduced, an output value of the photo-detector when a dark sample that substantially reflects no light is used, an output value that is an output value of the photo-detector when a calibration sample of a known light reflectance is used as the object, and an output value of the photo-detector when an inspection work to be measured is used.

Abstract: Provided is an optical analyzer which can promote enhancement of measurement sensitivity, cost reduction, size reduction, structural flexibility, disturbance resistance, and the like, at the same time. A laser device to be used in such optical analyzer is also provided. An optical analyzer comprises a laser light source (2); a wavelength selection element (3) for selecting and leading out light having a wavelength substantially equal to the absorption wavelength of an analysis object from among light outputted from the laser light source (2); an optical detection means (5) for detecting the intensity of light red out from the wavelength selection element (3); and a drive current control means (6) for increasing or decreasing the drive current of the laser light source (2) near a specified current value thereof for outputting light of the absorption wavelength, and setting the drive current at such a current value as the intensity of light detected by the optical detection means (5) has a peak value.

Abstract: This invention may measure the sprayed particle sprayed from the nozzle safely with the use of a conventional particle size distribution measuring device The particle size distribution measuring device may measure particle size distribution of a particle group, and may include a device body comprising a light source that irradiates light on the particle group and a light detector that detects intensity of diffracted light or/and scattered light generated by irradiation of the light, a spray measuring system that introduces a sprayed particle group as being the particle group sprayed from a nozzle into a measuring area between the light source and the light detector, and an ordinary measuring system that arranges a measuring cell that accommodates an ordinary particle group as being a particle group other than the sprayed particle group between the light source and the light detector are arranged to be exchangeable for each other.

Abstract: A probe unit includes a gas sensor having multiple gas introduction bores for introducing a gas into an inside of the gas sensor, and a sensor holder inside of which the gas sensor is held and that is arranged inside of a duct so as to introduce an exhaust gas flowing in the duct into the gas sensor. A calibration gas flow channel is arranged in the sensor holder and has an opening at an inner surface of a side wall, surrounding the gas introduction bores of the gas sensor, of the sensor holder so as to supply a calibration gas to the gas sensor. A guide groove is arranged continuous to the opening of the calibration gas flow channel and arranged on the inner surface of the side wall along an arranging direction of the multiple gas introduction bores to face the multiple gas introduction bores.

Abstract: A penetration and removal efficiency calibration unit for a volatile particle remover in a solid particle counting system provides an accurate and efficient approach to calibration. The calibration unit includes an aerosol inlet, a flow meter downstream of the aerosol inlet, and a mixer. The flow meter receives the aerosol flow from the aerosol inlet and provides an output flow to the mixer. The mixer receives the output flow from the flow meter and also has a dilution gas inlet. The mixer provides a mixer output flow for reception by the volatile particle remover or particle counter. A first flow controller controls flow into the dilution gas inlet. The calibration unit also includes a bypass inlet. A second flow controller controls flow into the bypass inlet, and a control loop controls the bypass flow such that the aerosol flow tracks a reference value.

Abstract: The measurement sensitivity is improved by suppressing the surrounding temperature influence as much as possible, while realizing scale reduction, and by enlarging the detection signal, while reducing the production errors in enclosing a reference gas. Provided is a thermal conductivity sensor that detects thermal conductivity of a sample gas by using a Wheatstone Bridge circuit constructed in such a manner that measurement resistors that are brought into contact with the sample gas are disposed on a first side, and reference resistors that are brought into contact with a reference gas are disposed on a second side, and comparing the potential difference between connection points of the reference resistors and the measurement resistors. The measurement resistors disposed on the first side are assembled in one measurement space, and the reference resistors disposed on the second side are assembled in one reference space.

Abstract: The present invention is to lessen work burden on a user, to eliminate determination error, to prevent a substrate from being damaged, and to prevent prolonged working time by automatically determining whether or not a particle to be removed is present. A particle inspection and removal apparatus of the present invention includes a particle information acquisition section acquiring particle information on a particle adhering onto a substrate surface, a particle removal section removing the particle adhering onto the substrate surface, a comparison section comparing a threshold set for each of regions of the substrate surface with the particle information on each of the region obtained by the particle information acquisition section, and a particle removal control section controlling the particle removal section to remove the particle on the substrate surface based on a comparison result of the comparison section.

Abstract: The present invention provides a combustible gas sensor that can realize a considerable improvement in the measurement sensitivity and the measurement precision by increasing the contact area between the measurement object gas and the oxidation catalyst particles, increasing the amount of heat generation of oxidation reaction in accordance therewith, and improving the transference of the oxidation reaction heat, while reducing the scale of the whole.