| 摘要 |
Tensiometer for express analysis of humidity of soil includes body, pressure measuring device, ceramic filter that separates collection chamber from the earth layer. In the lower part of the body a screw mechanism is mounted, and inside an exhaust perforated tube is installed, this is connected to collection chamber and goes through saturated each layer. At that in the upper part of the body a vacuum micro-=pump is mounted, and electromagnetic valve, this provides connection of exhaust perforated tube with collection chamber, Pressure measuring device for measurement of rarefaction that is formed I collection chamber in process of measurement of suction pressure of soil moisture is connected to the block for processing and transmission of signals. |
