The fruit firmness generally refers to the pressure of the fruit unit area bearing the force measuring spring, and then the calculated ratio, because of the hardness of the fruit and the maturity, quality, processing time, harvest storage of apples, pears, watermelons, bananas and other fruits , transportation, etc. are closely related, so in modern agriculture, especially in the production and management of orchards, the use of fruit hardness tester to determine the hardness of fruits has become more and more common, and to use the fruit hardness tester to obtain more accurate Measurement data, in the use of fruit hardness tester, we need to pay attention to the following main points:
1. Before using the fruit hardness tester, perform the instrument calibration. Firstly, loosen the fastening button, turn the dial to drive the pointer to the initial calibration line, and then tighten the fastening button to check whether the indicator pointer is in the driving direction. On the right side, if it is not found, you should rotate the zero return knob so that the indicator pointer is on the right side of the drive pointer.
2. At the same time in order to achieve better measurement results, improve the measurement accuracy of the fruit hardness tester, before the measurement, you can also press the head pressure, full-range pressure two or three times to make it lubricate.
3. During the measurement process, the first step is to pay attention to whether the indenter is perpendicular to the surface of the fruit. Secondly, in the process of measurement, the fruit hardness tester should be inserted evenly and slowly, avoid rapid insertion, impact measurement, and in the process of press-in Turn it.
4. The indenter of the fruit hardness tester is the most important part of its measurement of fruit firmness, and it is also a part that is in direct contact with fruit. Therefore, the indenter should always be kept clean. After the measurement is completed, the juice should be cleaned immediately to avoid affecting the fruit. Hardness tester performance and next use.
Fruit hardness tester is to exert pressure on fruits to achieve the effect of measuring fruit hardness. Therefore, in addition to ensuring that the parts of the instrument can work normally and with high accuracy, measurement methods should also be taken to improve the measurement. accuracy. It should be particularly noted that the force-measuring spring of the fruit hardness tester has been calibrated at the time of delivery, so it is not allowed to turn the nut without authorization so as not to affect the measurement accuracy of the fruit hardness tester.
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