Textile testing instruments purchase and use of the 3 points

Textile testing instruments purchase and use of the 3 points

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.