23 results about "Gas analyser" patented technology

The present invention discloses a method and a system for monitoring condition of a sample handling system connected to a gas analyzer. The sample handling system comprises a sample line for supplying a gas sample to the gas analyzer, and sample handling devices. The system for monitoring condition, receives measurements from temperature and pressure sensors connected to the sample line and obtains operating characteristics of the sample handling devices based on the measurements and model of the sample handling system; and determines the condition of the sample handling system based on comparison of the operating characteristics of the sample handling device against a plurality of reference values associated with the sample handling device.

The invention relates to a sensor arrangement (1) having at last two preferably thermal flow sensors (S1, S2), which are arranged in a bridge circuit with two branches (2, 3), wherein at least one flow sensor (S1) is located in each of the two branches (2, 3), and wherein the flow sensors (S1, S2) each have a basic resistance value, and the basic resistance values of the flow sensors (S1, S2) can deviate from one another, in particular due to the manufacturing process, wherein a compensation device (10) with at least one preferably digitally adjustable resistance element (11) is provided, by means of which the deviation of the basic resistance values of the at least two flow sensors (S1, S2) can be compensated for during measurement operation. The invention also relates to a gas analyser having at least one such sensor arrangement (1), a method for calibration and a method for condition monitoring of at least one such sensor arrangement (1), a computer program product and a computer-readable medium.

The utility model relates to the technical field of sensor calibration, in particular to a calibration system of an NDIR (Non-Dispersive Infra-Red) gas sensor, which comprises a computer, a serial server, a relay module, a gas source group, a mass flow controller, a high-low temperature box, a gas analyzer and a calibration tool frame group for broadcasting calibration. The to-be-calibrated NDIR gas sensor is detachably mounted on the corresponding calibration tool plate and is in communication connection with the calibration tool plate; a storage medium is arranged in the NDIR gas sensor and is used for storing calibration data; the computer is in communication connection with the relay module, the gas analyzer, the mass flow controller, the high and low temperature box and the calibration tool plates through the serial port server. According to the utility model, simultaneous calibration of a plurality of NDIR gas sensors can be conveniently realized in mass production, and a lower-carbon green production environment is realized.

A gas analyser comprises a sensor 50 comprising a measuring chamber 30 which takes up a gas sample Gp and generates a signal which correlates with target gas concentration. A filter component 20 comp

A system (100; 1) for analysing gas concentrations before and after a point of gas exchange (PGE; 3, 23) is disclosed. The system (100; 1) comprises a gas inlet line (101; 11, 33a) for conveying a flow of an input gas mixture towards the point of gas exchange (PGE; 3, 23), a gas outlet line (103; 13, 33b) for conveying a flow of an output gas mixture away from the point of gas exchange (PGE; 3, 23), and a gas analyser (105) that is connected to both the gas inlet line (101; 11, 33a) and the gas outline line (103; 13, 33b) and configured to sequentially receive and analyse gas samples from the gas inlet line (101; 11, 33a) and the gas outlet line (103; 13, 33b) in order to determine a presence of a specific gas in the input gas mixture and the output gas mixture.

The invention discloses test equipment for deep purification of industrial kiln flue gas, and relates to the technical field of industrial flue gas purification and detection. A cover plate is connected to the upper end of the box body; a first filter plate is connected to the surface of the cover plate; an air inlet pipe is connected to the upper end of the cover plate; an output port of the air inlet pipe is matched with the first filter plate in position; the upper end of the cover plate is connected with a longitudinal push rod, the top end of the longitudinal push rod is connected with a lock plate, the surface of the lock plate is provided with a fixing hole, and the surface of the lock plate is further connected with a touch switch; when the lock plate and the gas transmission connecting end of the industrial kiln are connected and closed, the touch switch on the surface of the lock plate synchronously makes contact with the connecting end and triggers and starts the air draft motor, when smoke is introduced, the two gas analyzers are immediately started to detect the introduced smoke in time, and the operation efficiency is high.

This disclosure is directed to a residual gas analyser, in particularly, a residual gas analyser for analysing a residual gas in a microlithography projection exposure apparatus. The residual gas analyser includes a mass spectrometer and an admission device for admitting constituents of the residual gas from a vacuum environment into the mass spectrometer. The admission device includes a switchable ion source. The ion source in a first switching state allows ionized constituents of the residual gas to pass through. The ion source in a second switching state ionizes neutral constituents of the residual gas. The disclosed techniques also relate to a projection exposure apparatus including such a residual gas analyser and to a method of residual gas analysis.

To provide a method for determining the content of an impurity in a cryogenic liquid.SOLUTION: The invention comprises the following steps: filling a vessel (3) with an initial volume of cryogenic liquid; vaporizing all the cryogenic liquid in the vessel (3), and forming a solid or liquid phase of the impurity in the vessel (3); isolating the vessel (3) against any exit of material; sending a determinable volume of gas into the vessel (3), capable of dissolving the liquid or solid phase of the impurity in the determinable volume of gas; isolating the vessel (3) against any entry of material; sending the gas loaded with the impurity to a gas analyser (6); and determining the content of the impurity in the cryogenic liquid from a content of the impurity measured, by the gas analyser (6), in the gas loaded with the impurity.SELECTED DRAWING: Figure 2

Disclosed herein is a residual gas analyser for detecting gas in a vacuum tool, the residual gas analyser comprising: one or more ion sources configured to ionise a gas in the residual gas analyser; one or more detectors configured to detect an ionised gas by the ion source; and one or more gas generating filaments configured to generate gas within the residual gas analyser.

A measurement station for measuring airborne molecular contamination includes at least one gas analyser, at least two controllable isolation valves connected in parallel to the input of the at least one gas analyser, a conditioning pump, at least two calibrated orifices connected in parallel to the input of the conditioning pump, at least one distributor to connect each controllable isolation valve with, on one side, a sampling line and, on the other side, a calibrated orifice, and a control unit linked to the controllable isolation valves. The control unit commands the opening or the closing of the controllable isolation valves in order to be able to connect the at least one gas analyser with at least one sampling line.

The invention relates to a gas detection device (10) for an electrolyser (1), comprising a supply conduit (41) for supplying gas to a gas analyser (50), wherein the gas is suppliable to the supply conduit (41) via a separator (14, 22) which is connectable to a cathode side (5) or anode side (4) of the electrolyser (1), wherein the pressure of the gas in the supply conduit (41) is adjustable between an atmospheric pressure and an elevated pressure relative to the atmospheric pressure via a pressure reducer (30, 32) which is operatively connected to the supply conduit (41) and is within an outlet conduit (26, 28).

The application discloses a livestock and poultry farm gas monitoring system based on multi-point arrangement and relates to the technical field of livestock house gas monitoring.The system comprises an edge computing gateway, which identifies airflow stagnation dead angles and dispatches a track moving calibration robot to arrive above a target fixed sensing node according to the running state of a mechanical environmental control system through a reduced-order flow field proxy model; the robot constructs a local isolation zone and applies air pressure drop by using a concentric double-diffuser assembly, thereby triggering node wake-up; then, by means of a micro-heating assembly, a bypass pressure limiting valve and a pneumatic ultrasonic wave, low-damage peeling and residual gas extraction are implemented on the scabbed air-permeable membrane; subsequently, isogenic backfilling air masses are formed by maintaining outer ring diffuser gas supply, and a reference gas analyzer synchronously samples and updates drift compensation parameters or outputs replacement instructions with the target fixed sensing node; and the application can realize non-contact cleaning, in-situ calibration and long-term continuous recovery of the fixed sensing node in a strong turbulent livestock and poultry house environment.

The present invention comprises: a boil-off gas supply unit (4) that is able to supply a boil-off gas (G) produced in an ammonia tank (2) to an ammonia gas delivery unit (3); a nitrogen gas recovery unit (5) that supplies nitrogen gas (N) recovered from a nitrogen gas-using device to the boil-off gas supply unit (4) and mixes the nitrogen gas (N) with the boil-off gas (G); a gas analyzer (7) that detects the amount of heat of the ammonia gas delivered from the ammonia gas delivery unit (3); a treatment facility (6) that separates the nitrogen gas (N) from the boil-off gas and is able to supply the same to a ground flare (F); and a control unit (8) that causes the boil-off gas supply unit (4) to supply the boil-off gas (G) to the treatment facility (6) if the amount of heat of the gas is lower than a predetermined threshold.

The utility model discloses a built-in soil respiration monitoring system capable of multi-point joint synchronous measurement, which comprises an air chamber, a hemispherical structure is adopted, a light source module, a detection module and a temperature, humidity and pressure sensor are integrated in the air chamber, the light source module emits infrared light with fixed intensity, and the detection module receives a light intensity signal and calculates a CO2 concentration value in a closed space of the air chamber; the top end of the sealing soil ring is tightly attached to the bottom end of the air chamber through a rubber sealing gasket to form a closed space; the ventilation balance valve is used for maintaining air pressure balance inside and outside the air chamber; the driving shaft is connected with the motor and the air chamber support to control opening and closing of the air chamber, and the driven shafts are symmetrically distributed below the driving shaft to stabilize the motion trail. The built-in structure of the CO2 gas analyzer is adopted, measurement can be directly carried out in the gas chamber, an external gas path pipeline is not needed, gas transmission delay can be reduced, and response time can be shortened; the soil respiration monitoring system has the advantages that the soil respiration monitoring system is simple in structure and free of external environment interference, multi-point joint networking synchronous observation within a visual distance of about 10km is realized based on the LoRa central data acquisition controller, and meanwhile, the soil respiration monitoring system is applicable to various complex ecological systems by adopting a firm and durable shell, so that technical support is provided for climate change research.

The invention relates to measuring equipment and may be used to measure the concentration of gases: hydrogen, oxygen, carbon oxide, carbon dioxide, methane, acetylene, ethylene, ethane (H2, О2, CO, CO2, CH4, C2H2, C2H4, C2H6) dissolved in transformer oil. A gas analyzer for gases dissolved in oil comprises a housing accommodating: a control unit, a vacuum extractor for extraction of the gases from the oil via hydraulic lines for supplying the oil from a transformer into the extractor and its discharge, a measuring cell for measuring the concentration of the gases. The measuring cell is connected to the extractor and made as a Herriott optical system for multiple passage of laser radiation from one mirror to another and measuring its output intensity using a photodiode. The measuring cell is connected to a laser module and a reference channel for laser wavelength calibration. There is a membrane assembly installed between the extractor and the measuring cell to prevent the oil from entering the measuring cell. The laser module is configured to ensure operation of each of its three lasers at a certain wavelength to allow measurements of different gases in the gas mixture. The reference channel includes a gas-proof glass transparent container for the gas mixture, and a photodiode. The measuring cell mirrors are provided with heaters and insulations, while the extractor can be calibrated automatically by means of pressure sensors installed in it at different levels to perform extraction at the level of these sensors, with subsequent measurement of gas concentrations at these levels and determination of the gas solubility. The invention will make it possible to improve measuring accuracy.

The disclosed techniques relate to a residual gas analyzer, in particular for analyzing a residual gas in an EUB projection exposure apparatus, including a mass spectrometer and an admission device for admitting ionized constituents of the residual gas from a vacuum environment into the mass spectrometer. The admission device includes an ion decelerator, with the ion decelerator having an adjustable deceleration voltage in order to subject the ionized constituents to selection with respect to kinetic energy before being transferred into the mass spectrometer. The disclosed techniques also relate to a projection exposure apparatus including such a residual gas analyzer, and a method for residual gas analysis.

1. The name of the design product: gas analyzer (portable). 2. The use of the design product: for gas analysis and detection. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

A residual gas analyser (40) for analysis of a residual gas (30), in particular a residual gas in an EUV lithography system (1), includes an inlet system (41) for admission of the residual gas from a vacuum environment (27a) into the residual gas analyser, and a mass analyser (43) having a detector (44) for detecting ionized constituents (30a) of the residual gas. The residual gas analyser includes an ion transfer device (42) for transferring the ionized constituents of the residual gas to the mass analyser, the ion transfer device having an ion filtering device (45) configured for filtering at least one ionic constituent (30a) of the residual gas. Also disclosed is an EUV lithography system, in particular an EUV lithography apparatus, which includes at least one residual gas analyser configured as indicated above for analysing a residual gas in a vacuum environment of the EUV lithography system.

The invention relates to a safety inspection track robot. Comprising a box body, an explosion-proof control box and an explosion-proof storage battery are installed in the box body, a bottom pan-tilt, a gas detector and an indicator light are installed at the bottom of the box body, a supporting plate is installed at the top of the box body, and a walking driving device matched with an I-shaped rail is installed in the middle of the supporting plate. A bearing walking device is installed on one side of the walking driving device, a bearing walking cleaning device is installed on the other side of the walking driving device, and a temperature and humidity instrument and a gas analyzer are further installed on the side portion of the supporting plate. Ultrasonic sensors are installed in the middle of the front wall and the middle of the rear wall of the box body. Proximity switches matched with buffers on the I-shaped rails are installed in the middle of the front portion and the middle of the rear portion of the supporting plate. According to the safety inspection track robot provided by the invention, the safety of inspection activities is improved.

The utility model provides organic waste gas treatment equipment with a good purification effect, and relates to the technical field of waste gas treatment equipment, the organic waste gas treatment equipment comprises a treatment box, one side of the outer wall of the treatment box is provided with a movable hole I, one side of the outer wall of the treatment box is fixedly provided with a motor I, and the output end of the motor I is fixedly provided with a rotating shaft I. According to the waste gas treatment device, the gas analyzer can monitor the concentration and components of waste gas in real time, so that people can make different treatment decisions according to the actual situation of the waste gas, the rotating shaft, the sealing plate and the catalysis plates are driven to rotate by starting the motor I, and flexible response to waste gas treatment is realized through the different catalysis plates; therefore, the waste gas treatment effect is improved, emission of harmful substances is reduced, the situation that waste gas which is not completely treated is directly discharged to pollute the environment is avoided, manual intervention is also reduced through automatic operation, and the working efficiency is improved.

The embodiment of the utility model discloses a multi-site gas monitoring device, and relates to the technical field of gas monitoring. The multi-site gas monitoring device comprises a plurality of gas sampling pipelines, a sampling pump and an analysis pipeline, and the plurality of gas sampling pipelines are respectively used for receiving gas from different monitoring points. The sampling pump is connected with the plurality of gas sampling pipelines and provides flowing power for gas in the gas sampling pipelines. The analysis pipeline is connected with the sampling pump and used for receiving gas from the gas sampling pipeline, the analysis pipeline comprises a gas analyzer, and the gas analyzer is connected with the gas sampling pipeline through the sampling pump and used for receiving and analyzing the gas. According to the invention, a plurality of sampling pipelines share one gas analyzer, so that the equipment redundancy is reduced.

The utility model discloses an analysis device which comprises a sample gas inlet, a gas storage tank, a sucking pump, a gas analyzer and a gas outlet, an inlet of the gas storage tank is communicated with the sample gas inlet, and the gas storage tank is used for storing sample gas output by the sample gas inlet; one end of the sucking pump is communicated with an outlet of the gas storage tank; the inlet end of the gas analyzer is communicated with the other end of the sucking pump, and the gas analyzer is used for analyzing the sample gas output by the sucking pump; and the gas outlet is communicated with the outlet end of the gas analyzer. The problem that a small-gas-yield PEM water electrolysis hydrogen production test platform cannot directly measure gas components is solved.

A method measures airborne molecular contamination via a measuring station including at least one first and one second gas analysers, at least one sampling line, and at least one valve. The method includes measuring molecular contamination concentrations in the sampling line by the first gas analyser for a first predefined time, fluidic isolation between the first gas analyser and the sampling line via at least one valve, and measuring molecular contamination concentrations in the sampling line by the second gas analyser for a second predefined time.