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[ Focus on Chemical Machinery Equipment Network ] Metrology is called "weights and measures" in Chinese history
.
In ancient China, a certain part of the human body or the fruits of other natural objects and plants were used as the measurement standard, such as "clothing hands to know the ruler", "hands for raising", "weighting for weight", "overstepping to determine acres", " "Drip timing" to perform metering activities
.
Chemical machinery and equipment network hotspots pay attention to chemical machinery and equipment.
In ancient China, a certain part of the human body or the fruits of other natural objects and plants were used as the measurement standard, such as "clothing hands to know the ruler", "hands for raising", "weighting for weight", "overstepping to determine acres", " "Drip timing" to perform metering activities
.
Today's small science popularization of instruments, let us enter the field of measurement and show you the "top ten measurement"
.
.
Currently, the more mature and widely developed measurement technology fields include: geometric quantity (length), thermal engineering, mechanics, electromagnetics, radio, time frequency, acoustics, optics, chemistry, and ionizing radiation, the so-called "top ten metrology"
.
.
Geometric measurement characterizes the geometric characteristics of tangible objects and the spatial position of particles
.
It relates to a specific measurement wavelength, measuring the reticle grating, sensor synchronizer Block, polyhedral, etc.
angle
.
Straightedges and steel tapes are commonly used in daily life, and satellite positioning systems widely used in military and transportation are all research results of length measurement
.
.
It relates to a specific measurement wavelength, measuring the reticle grating, sensor synchronizer Block, polyhedral, etc.
angle
.
Straightedges and steel tapes are commonly used in daily life, and satellite positioning systems widely used in military and transportation are all research results of length measurement
.
The object of thermal measurement is the temperature, pressure, vacuum, flow, volume and level and other parameters commonly used in the thermal process in industrial production
.
For example , the verification and calibration of ordinary glass liquid thermometers and infrared thermometers are directly related to the doctor's judgment on whether the patient has a fever, and provide technical support in the fight against SARS
.
thermometer.
For example , the verification and calibration of ordinary glass liquid thermometers and infrared thermometers are directly related to the doctor's judgment on whether the patient has a fever, and provide technical support in the fight against SARS
.
Mechanical quality measurement is directed, force value, density, capacity, torque, mechanical power, pressure, vacuum, and displacement flow, velocity, acceleration, the same amount of hardness measurements
.
For example, the accuracy of fair scales, electronic pricing scales, water meters, gas meters, and taxi meters on the market are all guaranteed by mechanical measurement
.
.
For example, the accuracy of fair scales, electronic pricing scales, water meters, gas meters, and taxi meters on the market are all guaranteed by mechanical measurement
.
Fan according to professional electromagnetic metering difficulties and includes a direct current power and flow resistance and precision AC and DC measuring instruments , analog to digital / digital to analog conversion techniques, magnetic flux, magnetic materials and magnetic recording materials, magnetic measurement and a quantum metrology instruments
.
There are many electromagnetic measurement contents closely related to people's lives, such as the accurate angle of household electric energy meters
.
Instrumentation.
There are many electromagnetic measurement contents closely related to people's lives, such as the accurate angle of household electric energy meters
.
Radio measurement includes the measurement of relevant electromagnetic energy parameters (such as voltage, current, power, electric field intensity, power flux density, and noise power spectral density); relevant electrical signal characteristic parameters (such as frequency, wavelength, amplitude modulation coefficient, frequency deviation, distortion coefficient) And waveform characteristic parameters); related circuit components and material characteristic parameters (such as impedance or admittance, resistance or conductance, inductance and capacitance, Q value, complex permittivity, loss angle) measurement and related device and system network characteristics Measurement of parameters (voltage standing wave ratio, reflection coefficient, attenuation, gain, phase shift)
.
For example, it is difficult for maintenance of electrical multimeter Accuracy, mobile transmit power measurement and the like
.
.
For example, it is difficult for maintenance of electrical multimeter Accuracy, mobile transmit power measurement and the like
.
Time frequency metering is used to measure frequency values and time intervals
.
The main service areas are: communications, aerospace, national defense, electronics, home appliances, medical care, scientific research, television, services and other fields
.
As time service, all kinds of (mobile phone, telephone, parking) services such as timing
.
.
The main service areas are: communications, aerospace, national defense, electronics, home appliances, medical care, scientific research, television, services and other fields
.
As time service, all kinds of (mobile phone, telephone, parking) services such as timing
.
Acoustic measurement is the measurement of sound pressure, sound intensity, sound intensity, sound power and loudness, and hearing loss
.
Such as the measurement of noise, traffic noise, environmental noise, building acoustics, electroacoustics, have played a positive role in the development of scientific research and production, national defense and national economy
.
.
Such as the measurement of noise, traffic noise, environmental noise, building acoustics, electroacoustics, have played a positive role in the development of scientific research and production, national defense and national economy
.
The objects of optical measurement include light sources, light detectors, optical media, optical components and optical instruments
.
The light source includes natural light source, artificial light source, laser and so on
.
Optical measurement involves parameters such as radiation intensity, irradiance, and radiance
.
Such as the measurement of the brightness of lamps and car lamps in daily life, and the measurement of colors
.
.
The light source includes natural light source, artificial light source, laser and so on
.
Optical measurement involves parameters such as radiation intensity, irradiance, and radiance
.
Such as the measurement of the brightness of lamps and car lamps in daily life, and the measurement of colors
.
The stoichiometry is mainly for the measurement of the chemical properties of substances such as heat, viscosity, density, conductivity, and turbidity
.
Stoichiometry is closely related to the daily life of the people
.
For example: purity, content of harmful substances in drinking water and other foods
.
.
Stoichiometry is closely related to the daily life of the people
.
For example: purity, content of harmful substances in drinking water and other foods
.
Ionizing radiation measurement refers to the measurement of related parameters of o, y, x and neutron radiation
.
Ionizing radiation measurement involves medical, industrial, agricultural, military, environmental monitoring and other aspects
.
Such as medical X-ray machine, CT machine drill-60 treatment machine, X-knife and other equipment, industrial X-ray flaw detector, nuclear belt scale, agricultural garlic irradiation processing, water quality testing for environmental monitoring, and use in customs, stations, and docks Forbidden items to inspect equipment such as apricot instrument
.
.
Ionizing radiation measurement involves medical, industrial, agricultural, military, environmental monitoring and other aspects
.
Such as medical X-ray machine, CT machine drill-60 treatment machine, X-knife and other equipment, industrial X-ray flaw detector, nuclear belt scale, agricultural garlic irradiation processing, water quality testing for environmental monitoring, and use in customs, stations, and docks Forbidden items to inspect equipment such as apricot instrument
.
Do you know something about the "Top Ten Measurements"? Welcome to leave a message to discuss!
Original Title: Instrument Popularization: Introduction to "Ten Major Metrology" Professional Fields
