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Personne àcontacter Kira
Beijing, Beijing
Principle
EQ*5 equilibrium tensiometer consists of two parts: equilibrium
sensor and moisture content sensor. The equilibrium sensor is made
of a special material which owns two characteristics: stable
relationship between water content and water potential, high water
permeability. Good permeability can ensure water potential changes
simultaneously with soil water content. Moisture content sensor
measure the water content of equilibrium sensor all the time.
Because the relationship between water content and water potential
is known, soil water potential can be calculated based on soil
water content. Moisture content sensor is fixed in the equilibrium
sensor, thus the changes of ambient environment (Soil density,
gravels, root systems, etc.) around the probe have no effect on the
measurement results.
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Comparison with traditional soil water potential meter
The current soil water potential meters on the market and their measuring principles have several shortcomings in some aspects, such as measurement accuracy, measurement range and stability in measurement. Apparently those soil water potential meters cannot completely meet users’ requirements. The traditional tensiometer usually has a small measurement range (*0.8~0bar), and it can be used only in moist soil and damaged easily; Psychrometer can be heavily affected by the temperature change and its measurement accuracy is low and not suitable for outdoor use. Gypsum blocks has low measurement precision, low stability, and can get significantly affected by soil pH
Equilibrium tensionmeter has irreplaceable advantages
Feature
Origin: China
