Soil moisture refers to the presence of moisture in the pores of the soil. The amount of water released by drying the soil at 105-110°C is used as the moisture content of the soil. Soil moisture is one of the important indicators for determining soil properties. It is a soil parameter that agricultural workers must understand when they perform activities such as sowing, irrigation, and fertilization.
Soil moisture measurement is generally determined by weighing method, soil moisture sensor method, infrared remote sensing method and so on. The method of measurement is different, and the results are slightly different. Because each measurement method has different accuracy and the measurement steps are different, the results are not necessarily the same. However, it floats within a certain range.
The application of soil moisture sensor is FDR principle, probe length 5.3CM, 3 probes, observe the soil moisture content in the center of the needle as the axis, diameter 7CM, high 7CM range.
Soil moisture sensor technical parameters
1. The measurement frequency is: 100Mhz
2. Measurement parameters: volumetric moisture content
3. Unit: %(m3 /m3)
4 measuring range: 0-100%
5. Measurement accuracy: ±3%
6. Power supply: 3.3V-12V
7. Output signal: 0 ~ 2.0VDC, TTL digital signal
8. Settling time: 2 seconds after power on;
9. Response time: < 1 second;
10. Working current: about 21mA;
11. Sealing material: resin watering, completely waterproof;
12. Cable length: standard is 1.5m
The soil moisture sensor can be used together with soil temperature sensor, soil moisture sensor, soil CO2 sensor, linked to the display, and then through the button, you can easily view the value of each parameter. When the agricultural worker needs to understand the moisture, humidity, or temperature of a piece of soil, a soil moisture tester (a soil moisture sensor is one of the components) can be used for testing.
Figure soil moisture tester
The above figure is a soil moisture tester, in which the black cylinder can be a soil moisture sensor, a soil temperature sensor, a soil moisture sensor, and the like. Can be customized according to your different needs, convenient and simple. The soil moisture tester provides a quick method for measuring soil moisture and other indicators, providing convenience for agricultural workers.
The color matching of tinplate boxes plays an important role in the sales of goods. The first impression of consumers when they see the goods comes from the Iron Box packaging. The beautiful iron box and the comfortable color matching make people feel very comfortable. From the perspective of psychology, vision accounts for 87% of the five senses; Hearing, smell, touch and taste only account for 13%. It is better to see than to hear. So, how can we choose the matching colors of tinplate boxes to attract consumers?
The color matching of the iron box packaging mainly enables customers to perceive the packaging items of the iron box at a glance from the packaging color of the iron box. However, there are still many product packaging colors on the market that do not achieve this effect. For example, tea is generally packaged in green. Stimulating colors can attract customers' attention, such as bright red, and red is used for many wines and pastries. Pink and goose yellow are used to express the feeling of closeness and warmth. Therefore, food packaging generally uses this kind of color packaging.
Contrast can make colors bright, vivid, lively, both aesthetic and pleasure. For example, Japan's soup filling series low box packaging is a group of masterpieces based on consumer psychology. The author believes that although drugs are used to cure diseases, the pain of consumers in the process of treatment is intolerable, which gives rise to a psychological feeling of fear. In view of this, when designing the packaging iron box, the author used distinctive color contrast ingeniously to make people feel that this enema is different from those similar products with cold colors and mainly words, as if there is something appetizing in it that is not so terrible. In terms of color contrast, it is necessary to prevent fancy, messy, complicated, raw and hard masonry, and avoid the inharmonious atmosphere left in consumers' hearts.
The color matching of tinplate boxes is very skillful. A good color matching will help the product to be sold, otherwise, it will be different from the expected effect. Good designers have their own unique style in color matching.
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