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The classification of printing tape
A, according to the structural characteristics mini tape measure of classification, printed tape can be divided into the following three categories:
(1) measuring tool. Which USES fixed form emersion printing tape measure of the value, such as gauge block, break code, standard cells, standard resistance, bamboo and wood ruler. Line meter scale, etc.;
(2) the measurement instrument. To measure the keychain tape measure amount of converted into direct observation index of equivalent information printing tape, such as pressure gauge, flow meter, thermometer, ammeter. Heart electroencephalography, etc.;
(3) the metering device. Is necessary in order to determine the value of a measurement printing tape and overall combination of auxiliary equipment, such as mileage valuation verification device, high frequency microwave power meter calibration device, etc.
Second, according to the metrology USES classification, printing tape can also be divided into the following three categories: standards of measurement, standards of measurement, working printing tape.
Printing tape is one of the basic metrology research content, is the material basis of measurement. Internationally, printed tape and measuring instruments are synonymous terms, it is defined as "separately or together with the auxiliary personalized tape measure equipment for measuring instruments", printing tape is measuring instrument in our country, also known as active; Printing tape and measuring tool, also known as passive.
Printing tape and the floorboard of the metering device, according to the technical performance and use printing tape can sweep as a benchmark standards and commercial printing tape.
(1) benchmark printing tape
Standards of measurement is in a particular field, with contemporary high measuring its value features don't have to reference the same amount of other standards, and is designated or ordinary recognized measurement standard. Recognized by the international agreement, as in the world to the quantitative standard of all other fixed value according to the standards referred to as the international benchmark, confirmed by the country officially, at home as a basis for quantitative standard of all other fixed value standard called national benchmark, the benchmark printing tape is usually the main benchmark to testify the benchmark vice datum reference datum and job reference.