Explore the use of cotton inspection equipment at room temperature

  1. To use some cotton inspection instruments at room temperature, you must use standard cotton samples (hereinafter referred to as standard cotton samples)

  (If you buy our company's KX175-1, KX730, the company will provide a set of standard cotton samples)

  Because at room temperature, the physical properties of cotton will change with environmental conditions (temperature and humidity). If you test the micronaire value, when you weigh the cotton, you will find that the weight changes with the temperature and humidity. On a dry day, the weighing of cotton is lighter than 8 grams, and the weight is heavy, and 8 grams of cotton is less. This is the same as the micronaire value measured on 8 grams of cotton on rainy and dry days. Not the same, the difference is huge. The same length will also have different measured data under different environmental conditions.

  How can the correct data be measured under different environmental conditions? It is necessary to balance the standard cotton sample and the tested sample in the same environment. First check with a balanced standard cotton sample (close to the selected sample data), if it is within the tolerance (for example, the index of KX175-1 is 0.05 micronaire, and the length of KX730 is within 0.5mm), and then Test the tested sample, so as to ensure the correctness of the tested sample data.

  If the tolerance is exceeded, the lower and higher standard cotton samples must be used for calibration. After the calibration is completed, the standard cotton samples of the intermediate value must be used for verification. The tested samples must be tested within the tolerance range. Ensure the correctness of the tested sample.

  2. When calibrating, use the lower and higher two standard cotton samples for calibration. The value of the test sample should be between the two calibration cotton samples. If you use 2.86 and 5.04 standard cotton samples to calibrate, the value of the tested cotton sample should be greater than 2.86 and less than 5.04, otherwise the measured results may be out of tolerance. (I will introduce it to you if I have time.)

  3. The judgment of instrument linearity is also very important

  (Generally good instruments are two-point calibration)

  We have the opportunity to discuss together again, such as how to eliminate the return error of the pointer instrument, etc., hoping to allow users to buy a good instrument and use the instrument well to ensure that the measured data is correct.