Precautions for the use of aquariography in grain inspection
When using the moisture measurement instrument to detect food, pay attention to the requirements for the placing environment. Give it the same inspection indoor environment as other inspections. General departments have misunderstandings of the use of water measurement instruments, too much emphasis on equally equal inspections and non -force inspection instruments, and ignore the correct use and maintenance of the water measurement instrument. When using the moisture measurement instrument, first, the corresponding technical file should be established to ensure the accuracy and delay of the use of the instrument. When detecting food, because
Qiu Liang acquisition and drying tower inspection has high requirements for flexibility and fastness, and the normal temperature and humidity must be kept during the test of the moisture measuring instrument. Excessive temperature and humidity will affect the accuracy of the test results. When the drying tower follows the inspection of the drying tower, it should leave the workshop branch to effectively place it to ensure that the temperature and humidity of the instrument are always clean and clean.
In actual situation, special requirements such as fastness, convenience, and flexibility may be available when testing food work. The moisture measurement instrument can meet such needs. Different types of moisture determinations have different inspection methods, but the current standards of the state still determine the warm -time drying method as an authoritative and standard measurement method. And determine the height of 105 ° C as the arbitration method. This is also the result of long -term exploration and research summary. In the testing or drying reserve testing of autumn grain, the measurement instruments must be adjusted in time to ensure the accuracy of the measurement results. If it is dependent on measuring instruments, it will have adverse effects on the measurement work.
Test the preparation and natural landing of samples
When using the measuring meter to measure the moisture content of the grain sample, it is generally used to evenly scatter the fixed or fixed sample to the measurement department, and the temperature measurement element and sensor are determined. Therefore, there are certain requirements for the grain and clarity of the grain samples that accept the measured grain samples. The state divides the grain samples that are tested. For example, corn and soybeans belong to the range of large grains of grains, and sorghum, wheat, and rice belong to the range of medium granules. Due to the high degree of hole clearance under the natural state of the sample, the difficulty of determining the moisture of the sample thermometer during the sensing process is increased. In addition, the grain contains other types of organic or inorganic ingredients. If you do not carefully select the detection sample, it will cause errors in the measurement results and affect its accuracy.
The use of a moisture measuring instrument to detect grain samples is generally quantitative or fixed, which puts forward requirements for the testing or measuring cup in the sample during the detection process. When the sample is imported, it should be guaranteed to fall
Fall, keep constant pouring speed and continuity. When detecting samples, try to keep its surface horizontal state as much as possible. The interruption in the process will be understood by the instrument as the end of the end and starting the weight of the sample. Pour changes in the speed will affect the level of the sample and pores, leading to a deviation in the measurement results. Adjustment of temperature difference
When using the moisture measuring instrument to detect the sample, it is required to detect the ambient temperature, instrumental temperature and the sample temperature as much as possible. First of all, during the acquisition of autumn grain, the northern grain depot was affected by the acquisition season. The indoor temperature and outdoor temperature were large. Generally, the temperature difference was at 40-50 ° C, and the test process had fast requirements. The actual measurement process of the sample is relatively fast and the time is relatively short. The instrument is unable to ensure the adjustment effect by relying on its own adjustment. The measurement results are generally higher than the standard measurement results. Therefore, it should be rationally grasped during measurement. Secondly, during the drying follow -up inspection process, the drying and precipitation of the drying and precipitation was treated with high temperature treatment, which caused the free water in the grain particles to evaporate. At this time, the grain of the tower mouth is high, and samples must be selected in the cooled to cooler temperature to ensure that the temperature of the three is basically the same.
Conclusion
The accuracy of the moisture content of food plays a very important role in subsequent treatment such as food storage and processing. The newly harvested grain has a high water content, which is easy to produce fever, which leads to food preparation or mold, and has a adverse effect on the germination rate of food. In order to improve the safety and scientific nature of food storage, the grain after the harvest must be dry in time to ensure that the water content of the grain meets the safety storage standards. In addition, the moisture content of food is also an important basis for trade settlement in the process of grain acquisition. Therefore, the accurate measurement of the grain level is of great significance.
