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The analysis of the existing measurement acremeters on farmland area measurement shows that the research results are difficult or cannot be directly applied to agricultural production. The use of differential techniques or rank-defective free network adjustment methods for area error correction, although high precision, but the need for more complex technical support, higher requirements, difficult to achieve in many places, the latter need to carry out auxiliary measurement of tape, And the need for complex internal business calculations, the operability of these methods are relatively poor; other studies have failed to conduct a comprehensive and systematic study of the error law. For this reason, the author conducts a preliminary study on the error regularity of the acre measurement instrument in the determination of farmland area, aiming to provide reference for future production practice.
In order to further study the error distribution law of the acre measurement instrument in the measurement of farmland area, another 20 different area and different shapes of the land are selected, and the true value of the area is measured and calculated by the same method. The error caused by human factors. There are a series of random errors that cannot be found due to observation errors, errors caused by improperly selected routes, and inaccurate positions of the acremeters. Human error can be avoided as much as possible by adequate preparation before the test and careful operation in the test.
The relative error of the data measured by the acre measurement instrument can reach 5%, which meets the accuracy requirement of the farmland area measurement. It is recommended that when the measurement area is less than 0.27 hm2, multiple measurements should be taken to improve the accuracy of the data; when the area is close to and greater than 0.27 hm2, the measurement error is relatively stable and can be measured several times or once. In the weather conditions such as rain, cloudy, and sunny, the measurement acre is affected by the irregular weather conditions, and is also related to the configuration of the terrain and the equipment itself. When using the acre to measure the area of ​​farmland, it is necessary to consider whether the size of the farmland area and the accuracy of the data are suitable for the measurement of the acre measurement instrument. Taking into account the error from the satellite, it is recommended that the venue be wider and has better weather conditions. Use in case.
The filling machine model NJP Series is fully automatic capsule filling and closing machine, suitable for dosing powder/granules/pellet in hard gelatin capsules.
It adopts intermittent motion and multi-position tamped dosing method to complete capsule orientation, separation, filling, closing and ejection etc. With different size parts the machine is suitable for size 00 to size 5 of empty capsules.
The production speed can be controlled by means of a frequency converter.
The machine is designed in accordance with GMP standard. All parts in contact with product are made of stainless steel or GMP approval material. Advantage of the machine is advanced designing, novel structure, precise dosing, safe and reliable, high filling rate etc.
2. Filling structure is handled by modularity, as well as precious design, reliability and low wear rate.
3. The material of all parts contacted with products is stainless steel or GMP approval material, whole close structure ensure products avoiding pollution, accord with GMP completely.
4. Can fill No.00-No.5 gelatin capsule, capsule acceptability is more than 99%.
5. Velocity Modulation and PLC control system ensure the operation process safety and convenience
6. New model structure, ten-work position, whole close and intermittent turret, upper and lower segment's single-direction movement is very safe;
7. The new model structure whole close dosage device, pressing powder into the slug through five times tamping, ensure the dosage precision. Electric Control System adopts PLC and velocity modulation Electric parts are from world top brands, such as PHOENIX, OMRON and so on, operating nicety, safety and reliable.
The acre measurement instrument has been widely used in agricultural resources investigation and monitoring, forest land survey, afforestation acceptance, pest and disease evaluation, and technical identification of forestry cases. Compared with the traditional compass meter measuring area, the use of acre measuring instrument saves time, labor and cost. The use of acre measuring instrument to measure the area of ​​farmland has become one of the important measures for the measurement of farmland area in agricultural production and operation in recent years and its development trend. However, because the general accuracy of the single-point positioning of the acre measuring instrument is 7 to 15m, this accuracy does not meet the actual measurement requirements. Using it to measure the farmland area will inevitably result in a certain area error. Therefore, only the error is performed. Studying and correcting it can only make it truly applicable in agricultural production.
Features:
1. New Indexer gear box structure.