Key Points for Selecting and Using Textile Testing Instruments

Because there are many types of textile testing instruments with different performance and price, and there are many manufacturers, when purchasing instruments, it is necessary not only to familiar with professional knowledge of textile material properties and product uses, but also to understand the performance and performance of instruments produced by each manufacturer. characteristics, after thorough analysis and comparison, select the appropriate textile testing equipment, so that it can not only meet the actual needs of production and scientific research, but also seek the truth from the facts to avoid blind comparisons, resulting in unnecessary economic waste.

In order to ensure that the measurement results of textile testing instruments are correct and consistent, so that the values ​​are stable within a certaintolerance range, when purchasing and using the instruments, we should pay close attention to its good measurement performance, and carry out the necessary metrological verification. For example:

⑴There are usually several measurement ranges available for an instrument. Generally, the error at both ends of the instrument\'s indication range is large, so according to different test objects, a reasonable and moderate instrument measurement range should be selected.

⑵The precision of the instrument (accuracy for short) is a full reflection of the random error and the systematic error of the instrument. In order to obtain accurate measurement results at the same time, an instrument with an appropriate level of accuracy should be selected

(3) Reproducibility of the instrument means the consistency of the same physical quantity measured under different measures the conditions. The so-called interstage erroror \"stage difference\" is one of the reproducibility indicators. Therefore, when selecting an instrument, it is necessary to have good reproducibility is very important.

The development of modern instruments mainly unadopts a serialized and standardized building block structure, which decomposes the instrument into several parts and units with independent functions. Users can choose different test requirements according to actual needs. Different combinations of units can be selected to achieve practical and economical results.

In textile test instruments, most of the test objects are a signal that changes with time, i.e. a dynamic signal. If an instrument\'s output signal can firmly follow a rapidly fluctuating input signal without distortion, the instrument has a good dynamic response. Instruments whose dynamic response performanceamic are poor will inevitably produce measurement errors. The factors that determine its dynamic response mainly reside in the sensor part. Therefore, selecting sensors with excellent performance should be one of the important conditions to ensure the detection quality of textile instruments.

The development trend of textile testing instruments is to preferably use microcomputers. Therefore, whether centralized or dedicated, it is necessary to design interfaces and compile application software according to the process characteristics of various instruments, which requires technical personnel. It is necessary not only to know the technical characteristics of textile instrument testing technology, but also to have professional computer application knowledge. These include the mechanism for detecting textile instruments.es and characteristics of input and output signals; performance and methods of use of major interface devices; basic methods of compiling computer application programs, etc.

With the development of science and technology, many instruments have integrated various technologies such as machine, light and electricity, and modern equipment such as data processing, signal image recording and processing with versatility are also emerging, such as storage oscilloscopes, storage oscilloscopes, fast spectrum analyzers, image processing systems, etc. Appropriate selection of these general-purpose equipment can not only meet the needs of various testing and research, but also greatly reduce the requirements for special equipment.

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