The numbering problem of aluminum box soil samples

For agricultural weather monitoring, the observation of soil moisture is also one of the most important items. When sampling the soil, there are four duplicate points required to drill 5, 10, 20, 30", "100 centimeters respectively. There are 11 levels of soil samples, and 44 lead boxes are needed to hold each one. If you observe multiple crops, you will have more soil samples and more aluminum boxes for soil. There may be hundreds of them. .

With so many aluminum boxes, it is obviously difficult to mark the box number and it is easy to cause confusion. For example, if an Arabic numeral is used to annotate a box number, it is easy to mistake "6" as "9" and "10" as "O1". In addition, when the soil is borrowed, which box represents which layer of soil is deeper? Because there are many boxes and the numbers are chaotic, it is not easy to remember, and this often affects work efficiency. In our practical work, we have explored a little experience on the tagging of the earth box numbers. The following introductions are provided for your reference:

Repeat the order of the four soil intake points and specify them as points A, B, C, and D (or use other letters to specify the points). Use the enamel marks 5A, 10A, and 20A for each depth of the soil on the aluminum box cover. 30A...100A; 5B, 10B, 20B, 30B"""100B;"""...etc. The implication is: 20A, the sample at the 20th-centimeter depth level of duplicate point A. The rest and so on. The box numbers for the points of origin for other observation sites can be brewed using other letters. There are three benefits to labeling box numbers like this:
1 The box number of the aluminum box is clear, which box is responsible for which duplicate points and which layer of soil samples can be seen at a glance.
2 The empty box can be weighed once. It is easy to remember and write when copying the box number on the observation book.
3 Avoid confusion, increase work efficiency and reduce your observational lapses.

Plate And Frame Heat Exchanger

Removable Plate Heat Exchanger (RPHE) is a type of heat exchanger composed of a series of plates which are held together with gaskets. The plates are connected in a plate pack that forms a sealed Pressure Vessel. The plate pack is assembled between a fixed frame plate and a movable pressure plate and is compressed by tightening bolts.

RPHEs are quite efficient as they have a large surface area compared to other heat exchangers. Heat transfer within the heat exchanger occurs between the plates and the fluids that flow through them. One fluid flows through the plate openings in each of them, and the heat transferred is determined by the size and number of plates in the exchanger. The heat -exchanging process is repeated in each of the plates and the collected heat is transferred to the other fluid.

Plate and Frame Heat Exchangers have proved beneficial in the food and beverage industries where they are used to maintain a safe temperature during the processing and storage of foods. In addition, they are used in chemical manufacturing to cool the various chemicals that are used in this industry.

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