Instrumentation traceability refers to the instrument, the source of the equipment, the fundamental, historical roots.
The traceability refers to the upstream to find the place of origin, the metaphor of the upward search for historical roots.
The development of instrumentation has a long history. In 1450 BC, ancient Egypt has green slate shadow clock. To the 14th century AD, the only reliable way to indicate time is the sundial or shadow clock.
Instruments for recording the time of night and specific celestial bodies were also used from 600 B.C. to 525 B.C. using palm fronds and plumb lines. The passage of a celestial body across the plumb line was observed through the opening of the palm leaf as the body passed through the meridian. A small folded copper folk photometric instrument from the mid-Eastern Han Dynasty was unearthed in Yizheng, Jiangsu, China.
Equipment is a modern term with no historical traceability, and refers to industrial products used by industrial purchasers in their manufacturing operations, including fixed equipment and auxiliary equipment.
Expanded information:
A, instrument use
1, instrument is an important prerequisite for the development of science and technology and the fundamental guarantee. Any big leap in the history of human development is based on the tools of great innovation and fundamental changes driven as a "tool" of the development and innovation of scientific instruments is often an important element of scientific and technological innovation.
2, the instrument is an important guarantee of economic development and national defense and security. Instruments are indispensable to ensure economic development, national security and important basic conditions. First of all, the famous scientist Mr. Qian Xuesen pointed out: "the key technology of the new technological revolution is information technology. Information technology consists of three parts: measurement technology, computer technology and communication technology. Measurement technology, on the other hand, is the key and foundation."
3, the instrument is to promote the construction of a harmonious society. Nowadays, the global resource depletion, environmental pollution and other issues have become a bottleneck for the healthy development of society; food safety issues, public **** emergencies, disease diagnosis, flammable and explosive chemical hazards, etc. to the people's life has brought serious impact, the solution to these major problems are inseparable from the advanced detection technology and means.
Two, special equipment
1, boiler
refers to the use of various fuels, electricity or other energy sources, will be filled with liquid heated to a certain parameter, and carry a certain pressure of the closed equipment, the scope of which is provided for the volume is greater than or equal to the 30L pressurized steam boiler; outlet water pressure is greater than or equal to 0.1MPa (gauge), and the rated power is greater than or equal to 0.1MW of the steam boiler. Or equal to 0.1MW pressurized hot water boiler organic heat carrier boiler.
2, pressure vessels
refers to the gas or liquid, carrying a certain pressure of the closed equipment, the scope of its maximum working pressure is greater than or equal to 0.1MPa (gauge pressure), and the product of the pressure and volume is greater than or equal to 2.5MPa-L gas, liquefied gases and liquids with a maximum operating temperature higher than or equal to the standard boiling point of the fixed container and mobile container. Mobile container.
Containing nominal working pressure greater than or equal to 0.2MPa (gauge pressure), and the product of pressure and volume is greater than or equal to 1.0MPa-L gases, liquefied gases and liquids with a standard boiling point equal to or lower than 60 ℃ cylinders; oxygen tanks and so on.
3, pressure piping
refers to the use of a certain pressure, for the delivery of gases or liquids tubular equipment, the scope of its maximum working pressure greater than or equal to 0.1MPa (gauge pressure) of gases, liquefied gases, steam media or flammable, explosive, toxic, corrosive, the maximum operating temperature is higher than or equal to the standard boiling point of the liquid media, and the nominal diameter of the pipe Greater than 25mm nominal diameter of the pipeline.
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