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Analyzer Carbon Hydrogen Nitrogen Tester Hydrocarbon Nitrogen Analyzer1
Analysis Instrument, Element Analyzer, Lab Instrument, Chemistry Machine
Shandong Wanlianda Instrument Co., Ltd.
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Product Description 1. Analysis principle of oxygen, nitrogen and hydrogen analyzer Oxygen, nitrogen and hydrogen in metal and non-metal solid materials are detected by inert gas fusion method. Hydrogen can be divided into two types according to different methods: 1. Infrared absorption method for hydrogen measurement: When using infrared absorption method to measure hydrogen, a TC-306 oxygen, nitrogen and hydrogen analyzer can be used The contents of oxygen, nitrogen and hydrogen were determined at the same time. The weighed sample was placed in a graphite crucible and heated in helium. (When nitrogen is not measured, argon can be used to save costs) The sample is heated and melted in the air flow. The carbon in the graphite crucible reacts to form carbon monoxide (CO), and the nitrogen and hydrogen in the sample are converted into nitrogen and hydrogen respectively. The mixed gas is sent to the high temperature reformer by the carrier gas, where the carbon monoxide (CO) is converted into carbon dioxide (CO2), H2 is converted into H2O, and nitrogen does not react. The mixed gas is sent to the CO2 infrared detection cell and the H2O infrared detection cell. The contents of carbon dioxide (CO2) and H2O can be used to calculate the contents of oxygen and hydrogen in the original sample. After the carbon dioxide (CO2) and water in the mixed gas after infrared detection are adsorbed, the remaining nitrogen and The helium mixed gas is detected by the thermal conductivity detection cell. The nitrogen is separated and then enters the thermal conductivity cell to detect the nitrogen content. The test results are given directly after computer data processing. 2. Thermal conductivity detection method for hydrogen measurement: When using the thermal conductivity detection method to measure hydrogen, only oxygen and nitrogen content or oxygen can be measured at one time. Hydrogen content. Place the weighed sample in a graphite crucible and place it in a helium (argon can be used when nitrogen is not measured) atmosphere. The oxygen in the sample reacts with the carbon in the graphite crucible to produce carbon monoxide. (CO), the nitrogen in the sample escapes in the form of nitrogen (hydrogen in the form of hydrogen), and these mixed gases are carried by the carrier gas There are two routes: one route is sent to a high temperature reformer, where carbon monoxide (CO) is converted into dioxygen The mixed gas after passing through the reformer is sent to the CO2 infrared detection pool, where it is detected. The content of carbon dioxide (CO2) is measured, and the oxygen content in the original sample is calculated based on it. After the carbon dioxide (CO2) and water in the mixed gas after the warm reformer are adsorbed, the remaining nitrogen (or Hydrogen) is detected through the thermal conductivity detection cell, and the test results are directly given after computer data processing2. Instrument application scope and main technical performance data 2.1 Scope of application of the instrument: Ferrous metals, non-ferrous metals, various alloys, zirconium, titanium, molybdenum, nickel, ceramics, rare earths, magnetic materials And the determination of oxygen, nitrogen and hydrogen content in other solid materials. 2.2 Scope of analysis: Oxygen: 0.00005%?0.1% Nitrogen: 0.00005%?0.5% Hydrogen: 0.00005%?0.0050% The analytical range can be expanded by reducing sample weight. 2.3 Minimum reading: 0.000001% 2.4 Instrument accuracy Oxygen: SD: ?0.0001% or RSD ?1.0% * Nitrogen: SD: ?0.0001% or RSD ?1.0% * Hydrogen: SD: ?0.2ppm or RSD ?2.0% * Note: * Subject to not greater than the standard deviation or uncertainty of the standard sample. 2.5 Analysis time: Oxygen: 120?180S Nitrogen: 120?240S Hydrogen: 120?180S /120?240S (infrared absorption method/thermal conductivity method) (It can be set arbitrarily according to the analysis material). 2.6 Electronic balance weighing accuracy (one ten thousandth): 0.0001g 2.7 Analytical methods: Oxygen: Infrared absorption method Nitrogen: Thermal conductivity method Hydrogen: infrared absorption method/thermal conductivity method. 2.8 Pulse heating furnace: Maximum current: 1500A; Maximum power: 8KVA; 3. Technical features of TC-306 series oxygen, nitrogen and hydrogen analyzers 3.1 Overall structure The whole machine adopts modular integrated design, including pulse electrode furnace, gas circuit system, circuit system and detection system. The floor-standing mainframe integrates 2 independent modules into one, with a simple and elegant appearance. It has automatic zero adjustment and high and low range Automatic switching function. A general 64-bit computer is used to control the whole machine, and a 32-bit embedded Built-in ARM microcomputer control, 24-bit high-precision data acquisition system, to achieve high control accuracy and speed requirements beg. 3.2 Electrode furnace system The pulse electrode furnace has a high heating temperature and uses program-controlled power, which can provide constant power heating, slope heating, A variety of program heating methods such as segmented heating can improve the analysis accuracy and is suitable for low melting point materials such as aluminum alloys. Rapid analysis of high melting point materials such as tungsten alloys. The electrodes are suitable for a variety of crucibles, according to the release of different samples According to the situation, a variety of crucibles including sleeve crucibles and high-temperature crucibles can be selected to effectively reduce the user's cost. The electrode cooling adopts a single-circulation independent cooling system, which can be directly connected to external circulating water or external water cooling device. It has the characteristics of good cooling effect and high reliability. 3.3 Gas system The whole machine adopts an integrated floor-standing design, with open space and greatly reduced gas system connection routes. The whole machine gas circuit system is more simple and reliable. The gas circuit components including solenoid valve, cylinder, gas circuit pipe and gas circuit joint are all imported components (solenoid valve The unique three-axis guide cylinder can ensure the smooth lifting of the electrode and ensure the graphite The good contact between the crucible and the upper electrode ensures uniform force on the graphite crucible, which is conducive to long-term high-temperature heating. The automatic blanking furnace head with air curtain protection and automatic air purge mechanism effectively ensure the analysis accuracy of oxygen elements. Degrees. The furnace head is a split structure, the upper and lower electrodes are easy to disassemble and replace, and the lower electrode is made of high temperature alloy. The material has a long service life and low cost, avoiding the need for professional technicians to replace the electrodes by using an integral furnace head.
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