How to Determine the Correction Coefficient of Wheat Bulk Density by Gravimetric Method
Wheat bulk density refers to the mass of wheat in a unit volume and has a great relationship with the quality of wheat. Generally large in weight, the higher the quality of wheat. This concept is somewhat similar to fullness. There are many methods for the bulk density of wheat. The general laboratory uses the standard method and conducts experiments according to the national standard method (GB/T5498-1985). In addition, the wheat bulkhead is also designed based on this principle and is used to determine the wheat bulk density, also called the electronic bulk density. Device.
Below we mainly determine the correction coefficient of wheat. This is the work that needs to be done when measuring the gravimetric weight by the cylinder method. The specific steps are as follows:
Correctly selecting the correction coefficient is the key to ensuring the accuracy of the simple method measurement results, and it is also the key to whether the simplified method can be correctly applied in practical work. We found during the trial and error process that the differences in the determination of different grades of wheat The correction coefficient is not the same, and changes according to a certain rule, that is, the higher the level of the test weight of wheat, the smaller the difference, the larger the correction coefficient; the contrary, the lower the level of the test weight of wheat, the greater the difference, The smaller the correction coefficient, these change laws provide a strong theoretical basis for the correct selection of correction coefficients in practical applications.
Then repeat the test ten times and measure the average result. The calculation formula of the correction coefficient is: G1÷G2=C1. In the formula: G1 - - National standard method (GB5498-85) measurement results (g / L); G2 - - Measuring cylinder method actual measurement results (g / L). C 1 - Measuring cylinder correction coefficient.
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