Whiteness is an important quality indicator of flour and an objective vision of flour. Many people believe in the results they see, but in fact, human judgment is subjective and not necessarily true. Therefore, it is necessary to accurately judge the flour. Whiteness, not only must have standards, but also need to use a professional whiteness detector - whiteness meter for testing. Whiteness meter is a flour whiteness measuring instrument widely used in flour mills. It is mainly used for measuring the whiteness of objects or powders with a non-colored surface. It can accurately obtain white with the visual sensitivity. Degree value. The following is an introduction to the use of the whiteness meter. First, turn on the power of the instrument and warm up for about 30 minutes. Second, clear, calibration. Take the round black module and put it on the measuring part of the instrument. The black module should be marked with the degree of the figure to check whether the product to be tested meets the standard, and gently wipe the module with a small brush to prevent foreign matter such as flour from entering, affecting the measured value and completing calibration. Third, hit the sample. Wipe the glass piece cleanly. Under the action of the powder knife, fill the flour to be tested in the module held by the backhand, remove the powder knife, press firmly with the small solid module, remove the solid small module, and buckle the white cover. Hold the end with the glass piece by hand, the palm of the hand is up, do not break the glass piece, keep the surface of the product to be tested (flour) smooth. Note that during the preparation process, use a small brush to wipe off the spilled flour on the module. 4. Place the prepared module (the black module) in the measurement section of the whiteness meter, face down, slowly release the hand, wait for the value on the module to be displayed on the instrument, then press the “Calibration†button to remove the standard module. . 5. Place the prepared flour module with the flour facing up and place it in the standard module placement (groove facing down). 6. Press the “Test†button on the white meter to complete the test task and record the number on the notebook. NFE 29203 is French flange standard, NFE 29203 is the same to EN1092-1, flanges pressure PN6 PN10 PN16 PN25 PN40, flanges type plate, blind, loose, slip on boss, screwed, weld neck, NFE 29203 flanges can instead of EN1092-1, the steel material for P245GH P250GH P265GH S235JRG2, all flanges made by forging. NFE29203 flanges manufacturer, nfe29203 en1092-1 flanges, nfe 29203 flanges pn10 pn16, China nfe 29203 flanges, nfe 29203 type flanges Jinan Hyupshin Flanges Co., Ltd , https://www.iflange.com