Hydrogen) is detected through the thermal conductivity detection cell, and the test results are directly given after computer data processing
2. 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%ÿ0.1%
Nitrogen: 0.00005%ÿ0.5%
Hydrogen: 0.00005%ÿ0.0050%
The analytical range can be expanded by reducing sample weight.
2.3 Minimum reading: 0.000001%
2.4 Instrument accuracy
Oxygen: SD: ÿ0.0001% or RSD ÿ1.0% *
Nitrogen: SD: ÿ0.0001% or RSD ÿ1.0% *
Hydrogen: SD: ÿ0.2ppm or RSD ÿ2.0% *
Note: * Subject to not greater than the standard deviation or uncertainty of the standard sample.
2.5 Analysis time:
Oxygen: 120ÿ180S
Nitrogen: 120ÿ240S
Hydrogen: 120ÿ180S /120ÿ240S (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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