The MP-406B moisture probe adopts the latest technology in the world, it can be used to measure the soil moisture for scientific research or irrigation management.
In either situation the MP-406B can:
● rapidly measure soil moisture by pushing the needles of the sensor into the soil surface or soil profile.
● make measurement over time by permanently burying the MP406B and connecting it to a data logger.
● Control irrigation by permanently burying the MP406B and connecting it into an irrigation controller.
The MP-406B has a high frequency moisture detector, which uses the standing wave principle to indicate the ratio of two or more substances forming a body of material, each substance having a different constant (ka).
The moisture measurement of the material is based upon the fact that in a water, soil, air matrix, the dielectric constant is dominated by the amount of water present. Then the soil water content can be measured exactly because changes in water content of the soil result in changes in the dielectric constant of the soil.
The material that can be measured by the MP406B is often soil, but can be any composition of nonmetallic powdered, liquid or solid those substances into the needles are inserted. It is widely used in highway construction, dam measurement, water content in oil, agriculture, meteorology and so on.