DB-2: Difference between revisions
→КОМПЛЕКТНОСТЬ
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=== '''<big> | === '''<big>KIT</big>''' === | ||
[[Файл:Db2 kit.png|мини|Монтажный комплект ДБ-2]] | [[Файл:Db2 kit.png|мини|Монтажный комплект ДБ-2]] | ||
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The principle of operation of a capacitive sensor is based on recording changes in the capacity of the built-in capacitor. The high sensitivity of the capacitor allows the sensor to work with bulk solids having different levels of dielectric constant, as well as with dielectric substances. The electrode and the wall of the hopper (or 2 parallel electrodes) form a measuring system of 2 electrodes, in which the capacitance of the filled space between them is measured. The measured value then is being converted to level. | The principle of operation of a capacitive sensor is based on recording changes in the capacity of the built-in capacitor. The high sensitivity of the capacitor allows the sensor to work with bulk solids having different levels of dielectric constant, as well as with dielectric substances. The electrode and the wall of the hopper (or 2 parallel electrodes) form a measuring system of 2 electrodes, in which the capacitance of the filled space between them is measured. The measured value then is being converted to level. | ||
==== '''<big> | ==== '''<big>Level change control</big>''' ==== | ||
<blockquote> | <blockquote>It must be taken into account that at the '''same''' level, but '''different humidity''', the sensor shows '''differnet level'''. For this reason, the sensor should be '''used to monitor level dynamics''' rather than to measure the actual product collected. The change in the filling level graph with changes in the humidity of the measured medium is shown in the graph below. </blockquote>[[Файл:Db2 chart examples.png|мини|График измерения показаний ДБ-2 при разной влажности|без|700x700пкс]] | ||
The chart is taken from AVTOGRAPH monitoring platform | |||
It is advisable that the combine hopper is always filled to the level where the standard alarm is triggered. With a team scheme of combine harvesters operating on the field, the bunker may not be completely filled until the grain is unloaded. | |||
== '''<big>МОНТАЖ ДАТЧИКА В БУНКЕРЕ</big>''' == | == '''<big>МОНТАЖ ДАТЧИКА В БУНКЕРЕ</big>''' == | ||