Calibration: Wikipedia summary by WikiSummarizer

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Here are the 10 keywords and summaries in the Wikipedia article referencing the "Calibration" keyword.

 

Wikipedia article:  Calibration

 

Calibration

 

Calibration (100)

 

·         Calibration is a comparison between measurements – one of known magnitude or correctness made or set with one device and another measurement made in as similar a way as possible with a second device.

 

·         The term "calibration" probably was first associated with the precise division of linear distance and angles using a dividing engine and the measurement of gravitational mass using a weighing scale.

 

 

Wikipedia article:  Calibration

 

Calibration

 

Calibration (100)

 

·         Calibration is a comparison between measurements – one of known magnitude or correctness made or set with one device and another measurement made in as similar a way as possible with a second device.

 

·         The term "calibration" probably was first associated with the precise division of linear distance and angles using a dividing engine and the measurement of gravitational mass using a weighing scale.

 

·         A transplanted calibration process that worked well to support the microphone application may or may not be the best answer or even adequate for the coaxial cable application.

 

·         The measuring equipment manufacturer generally assigns the measurement tolerance, suggests a calibration interval and specifies the environmental range of use and storage.

 

·         The assignment of calibration intervals can be a formal process based on the results of previous calibrations.

 

·         There are clearinghouses for calibration procedures such as the Government-Industry Data Exchange Program (GIDEP) in the United States.

 

·         More commonly, a calibration technician is entrusted with the entire process and signs the calibration certificate, which documents the completion of a successful calibration.

 

·         The integrity of organization-wide calibration is easily compromised.

 

·         Calibration can be called for: with a new instrument when a specified time period is elapsed when a specified usage (operating hours) has elapsed when an instrument has had a shock or vibration which potentially may have put it out of calibration sudden changes in weather whenever observations appear questionable In general use, calibration is often regarded as including the process of adjusting the output or indication on a measurement instrument to agree with value of the applied standard, within a specified accuracy.

 

measurement (100)

 

·         Calibration is a comparison between measurements – one of known magnitude or correctness made or set with one device and another measurement made in as similar a way as possible with a second device.

 

·         The term "calibration" probably was first associated with the precise division of linear distance and angles using a dividing engine and the measurement of gravitational mass using a weighing scale.

 

·         The measurement of pressure was an early example of how indirect measurement was added to the existing direct measurement of the same phenomena.

 

·         Before the Industrial Revolution, the most common pressure measurement device was a hydrostatic manometer, which is not practical for measuring high pressures.

 

·         The measuring equipment manufacturer generally assigns the measurement tolerance, suggests a calibration interval and specifies the environmental range of use and storage.

 

·         When this goal is met, the accumulated measurement uncertainty of all of the standards involved is considered to be insignificant when the final measurement is also made with the 4:1 ratio.

 

·         Calibration can be called for: with a new instrument when a specified time period is elapsed when a specified usage (operating hours) has elapsed when an instrument has had a shock or vibration which potentially may have put it out of calibration sudden changes in weather whenever observations appear questionable In general use, calibration is often regarded as including the process of adjusting the output or indication on a measurement instrument to agree with value of the applied standard, within a specified accuracy.

 

·         The NMI supports the metrological infrastructure in that country (and often others) by establishing an unbroken chain, from the top level of standards to an instrument used for measurement.

 

instrument (46)

 

·         The second device is the unit under test, test instrument, or any of several other names for the device being calibrated.

 

·         Calibration can be called for: with a new instrument when a specified time period is elapsed when a specified usage (operating hours) has elapsed when an instrument has had a shock or vibration which potentially may have put it out of calibration sudden changes in weather whenever observations appear questionable In general use, calibration is often regarded as including the process of adjusting the output or indication on a measurement instrument to agree with value of the applied standard, within a specified accuracy.

 

·         The NMI supports the metrological infrastructure in that country (and often others) by establishing an unbroken chain, from the top level of standards to an instrument used for measurement.

 

standards (46)

 

·         When this goal is met, the accumulated measurement uncertainty of all of the standards involved is considered to be insignificant when the final measurement is also made with the 4:1 ratio.

 

·         Establishing traceability is accomplished by a formal comparison to a standard which is directly or indirectly related to national standards (NIST in the USA), international standards, or certified reference materials.

 

·         The NMI supports the metrological infrastructure in that country (and often others) by establishing an unbroken chain, from the top level of standards to an instrument used for measurement.

 

pressure (27)

 

·         The measurement of pressure was an early example of how indirect measurement was added to the existing direct measurement of the same phenomena.

 

·         Before the Industrial Revolution, the most common pressure measurement device was a hydrostatic manometer, which is not practical for measuring high pressures.

 

·         In the direct reading hydrostatic manometer design on the left, unknown pressure pushes the liquid down the left side of the manometer U-tube (or unknown vacuum pulls the liquid up the tube, as shown) where a length scale next to the tube measures the pressure, referenced to the other, open end of the manometer on the right side of the U-tube.

 

indirect (16)

 

·         The measurement of pressure was an early example of how indirect measurement was added to the existing direct measurement of the same phenomena.

 

tube (13)

 

·         In the direct reading hydrostatic manometer design on the left, unknown pressure pushes the liquid down the left side of the manometer U-tube (or unknown vacuum pulls the liquid up the tube, as shown) where a length scale next to the tube measures the pressure, referenced to the other, open end of the manometer on the right side of the U-tube.

 

scale (13)

 

·         The term "calibration" probably was first associated with the precise division of linear distance and angles using a dividing engine and the measurement of gravitational mass using a weighing scale.

 

·         In the direct reading hydrostatic manometer design on the left, unknown pressure pushes the liquid down the left side of the manometer U-tube (or unknown vacuum pulls the liquid up the tube, as shown) where a length scale next to the tube measures the pressure, referenced to the other, open end of the manometer on the right side of the U-tube.

 

correctness (13)

 

·         Calibration is a comparison between measurements – one of known magnitude or correctness made or set with one device and another measurement made in as similar a way as possible with a second device.

 

traceability (13)

 

·         Establishing traceability is accomplished by a formal comparison to a standard which is directly or indirectly related to national standards (NIST in the USA), international standards, or certified reference materials.

 

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