Due to the wide variety of textile testing instruments, performance, prices vary, manufacturers are also many, the purchase of instruments, both familiar with the performance of textile materials and product use and other professional knowledge, but also to understand the performance of various manufacturers of instruments, characteristics, after in-depth analysis and comparison, choose a good and appropriate textile testing instruments, so that it can meet the production, scientific research needs, but also to prevent blind comparison, resulting in unnecessary economic waste.
In order to ensure that the textile test instrument measurement results are accurate and consistent, so that its value is stable within a certain tolerance range, the purchase and use of instruments, must pay full attention to it should be good measurement performance, the necessary measurement verification. For example.
1. an instrument often has several ranges to choose from, the general range of the indicated value of the instrument has a large error at both ends, so according to the different test objects, should choose a reasonable, moderate range of the instrument.
2. The precision of the instrument (referred to as accuracy) is a comprehensive reflection of the random error and systematic error of the instrument, in order to obtain the correct measurement results at the same time, you must choose the appropriate accuracy level of the instrument
3. Instrument reproducibility indicates that under different measurement conditions, the consistency of the same measured physical quantity, commonly referred to as inter-stage error or "stage difference", is one of the reproducibility indicators, so the choice of instruments, the requirement of good reproducibility is very important.
The development of modern instruments more series, standardized building block structure, it is the instrument is broken down into a number of independent functional components and units, the user can be based on the actual needs, the choice of different test requirements, you can choose a different combination of units, received both convenient and economic results.
In textile testing instruments, most of the test object is a signal that changes with time, that is, the dynamic signal. An instrument output signal can closely track a rapid fluctuation of the input signal without distortion, the instrument has a good dynamic response. Poor dynamic response performance of the instrument, will inevitably produce measurement errors. The factors that determine its dynamic response mainly lie in the sensor part. Therefore, the choice of excellent performance of the sensor is one of the important conditions to ensure the quality of textile instrumentation testing.
The latest development trend of textile testing equipments is the widespread use of microcomputers, therefore, whether centralized or dedicated, must be based on a variety of instrument process characteristics, design interfaces and the preparation of application software, which requires technical personnel to be familiar with the technical characteristics of textile instrument testing process, but also to have expertise in computer applications. This includes the textile instrumentation detection mechanism and input and output signal characteristics; the performance of the main interface devices and the use of methods; the preparation of computer applications such as the basic method.