Abstract:
본 발명은 극히 미량의 액상 시료를 함유하는 고도의 정밀도를 갖는 저농도 가스의 표준물질을 제조하는 장치 및 이를 이용하는 저농도 가스의 표준물질을 제조하는 방법에 관한 것이다. 구체적으로, 밀폐형 주사기를 통해 액상의 시료를 주입하되, 액상 시료가 정밀하게 측정된 무게로 표준물질 실린더에 주입될 수 있도록 하는 저농도 가스 표준물질 제조장치를 제공한다. 또한 시료 주입부를 포함하여 공정에 연계된 밸브, 라인 또는 연결부분에서 흡착될 수 있는 미량의 액상 시료 잔여물이 발생되지 않도록 함으로써 고도의 정밀한 표준물질을 제조할 수 있도록 한다.
Abstract:
본 발명의 대기중 오존 측정을 위한 표준 교정 방법은 a) 자외선 흡수 분광법을 이용하여, 오존을 함유하지 않는 기준 공기의 광흡수 스펙트럼인 기준 스펙트럼과 오존 함유 공기의 광흡수 스펙트럼인 검출 스펙트럼을 측정하는 단계; b) 상기 기준 스펙트럼과 검출 스펙트럼상 오존에 의해 흡광이 발생하는 흡수 파장에서의 흡광비를 이용하여 상기 오존 함유 공기의 오존 농도인 표준 오존 농도를 산출하는 단계; 및 c) 상기 기준 공기 및 오존 함유 공기를 교정 대상 장치에 공급하여 교정 대상 장치에 의한 오존 농도를 측정하고, 상기 교정 대상 장치에 의한 측정 농도 및 상기 표준 오존 농도를 이용하여 상기 교정 대상 장치를 교정하는 단계;를 포함한다.
Abstract:
The present invention relates to an apparatus and a method for analyzing the ingredients of liquefied gas injected to a gas analyzer, comprising a cylinder part which has a standard gas cylinder of liquid state and a sample gas cylinder (120) of a gas state and supplies gas; a controller (200) which has a gas distributor (210), a gas supply tube (221), a pressure controller, an absolute pressure meter (250) which is connected to a vaporization tank (241) of a carburetor, a middle ejector (260) which is connected to the vaporization tank of the carburetor, an exhaust pressure buffering cylinder (270), and a gas ejector (280); an analysis part having a gas analyzer which receives gas of which pressure and flow rate are uniformly adjusted from the controller and accurately analyzes the concentration of gas.
Abstract:
PURPOSE: A gaseous oil sample device is provided to sample gaseous oil even from high-pressure gas by reducing the flux of gas through a perforated net installed separate from a filter. CONSTITUTION: A gaseous oil sample device comprises an inlet pipe(20), an expansion chamber(30) which expands the flow path in order to reduce the flux of gas drawn in through the inlet pipe, a discharge pipe(40) which discharges gas from the expansion chamber, and a bypass pipe(50) which is connected between the inlet pipe and the discharge pipe and discharges gas not to pass through the expansion chamber.
Abstract:
본 발명은 방출 시험 체임버법을 이용하여 건축자재로부터 방출되는 휘발성 유기화합물(VOCs)의 농도를 측정하는데 사용되는 표준 확산용기 및 이를 이용하여 시험기관의 휘발성 유기화합물(VOCs) 농도 측정능력을 판단하는 휘발성 유기물 측정능력 평가방법에 관한 것이다. 휘발성 유기화합물(VOCs), 확산용기, 체임버법, 농도, 방출속도
Abstract:
An apparatus for supplying a plurality of samples to a gas analysis device through one line without the exchange of sample is provided to allow specific gas to be supplied to a gas analysis device step by step or selectively. An apparatus for supplying a plurality of samples to a gas analysis device through one line without the exchange of sample comprise a multi-direction valve(10) which has a plurality of opening and shutting holes to supply the flown gas to a gas analysis device(1) (wherein the other holes are closed if one is opened); a gas supply pipe(20) which connects the multi-direction valve and the gas analysis device to allow the sample gas supplied via the multi-direction valve to the gas analysis device; a gas exhausting pipe(50) whose one direction is connected to any one of the plurality of opening and shutting holes; a vacuum pump(40) which suctions the gas remaining in the gas supply pipe and the multi-direction valve to discharges it outside; a nitrogen supply unit(60) which supplies nitrogen to the gas analysis device direction; and a two-way valve(70) which is positioned between the gas supply pipe and the gas analysis device, has a plurality of opening and shutting holes whose one is connected to the gas analysis device and whose another is connected to the nitrogen supply unit, blocks the supply of nitrogen to the gas analysis device when the gas of the gas supply pipe is supplied to the gas analysis device, and blocks the supply to the gas analysis device by the gas of the gas supply pipe when nitrogen is supplied to the gas analysis device.
Abstract:
본 발명은 순환식 시안화 이온 분석장치에 관한 것으로, 본 발명에 따른 순환식 시안화 이온 분석장치는 구성요소가 비교적 단순하며 소형화가 가능할 뿐 아니라 액상의 시료를 주입구에 단순히 주입해 준 후, 흡광도의 세기 변화 등과 같은 분광분석 신호의 세기를 분석함으로써 시료용액 중의 시안화 이온의 농도를 간편하게 분석할 수 있어, 강이나 호수 등의 수질분석을 현장에서 수행하기 위한 휴대용 시안화 분석장치로 활용할 수 있는 장점이 있다.
Abstract:
PURPOSE: A high-pressure gas cylinder volume change measuring device and a volume change measuring method using the same are provided to measure a change in the density of water inside a water tank and to reduce errors possible to be generated when measuring a volume by compensating the density of the water with consideration with a material of a container and a kind of gas. CONSTITUTION: A method for measuring a change in the volume of a high-pressure gas cylinder (102) includes the following steps of: inserting a high-pressure gas cylinder filled with gas into a water tank (101) filled with water; measuring the water level inside the water tank and measuring the temperature of the water after thermally balancing the gas inside the high-pressure gas cylinder and the water inside the water tank; exhausting the gas from the high-gas cylinder; measuring the change in the volume of the water inside the water tank and the temperature; and measuring an effective volume change of the high-pressure gas cylinder based on the measurement value.
Abstract:
PURPOSE: A control device for the flow rate-temperature-humidity of gas is provided to accurately measure for evaluating a gas detector due to automatically controlling the flow rate, temperature, and humidity of gas without manual control. CONSTITUTION: A control device for the flow rate-temperature-humidity of gas comprises: a component gas supply line(100) wherein component gas is provided; a diluted gas supply line(200) wherein dilute gas is provided; a first flow regulator(110) which is installed in the component gas supply line and controls the flow rate of the component gas; a second flow regulator(210) which is installed in the dilute gas supply line and controls the flow rate of the dilute gas; a heater(300) which is installed in the backend of the second flow regulator and heats up the dilute gas; a humidifier(500) which humidifies the heated dilute gas; a dehumidifier(700) which eliminates water drop which is included in mixing gas; and a controller(800) which controls the operation of the first and second flow regulator, the heater, and the humidification part.