QT-EQ15 Soil water potential meter

QT-EQ15 Soil water potential meter

USD $0.1 - $0.1 /Piece

Min.Order:1 Piece

Supply Ability:
0 Piece / Pieces per Month
Payment Terms:
T/T L/C
Delivery Detail:
90 days

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Brand Name:
QT-EQ15
Place of Origin:
China
Model Number:
QT-EQ15

Beijing Channel Scientific Instruments Co., Ltd.

Business Type: Manufacturer
Main Products: Animal ,Agriculture ,Plant

Product Details

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Product description: Equilibrium tensiometer is a new revolutionary soil water potential meter which has patent protection. Soil water potential is measured as potential energy per unit quantity of water under isothermal conditions, its unit is bar (1 bar = 100kPa). In the soil, water potential is a major factor in determining the direction and speed of water flow, which is the only index of the effectiveness of soil moisture to plants. The water potential of different soils can be compared with each other directly. Accurate determination of soil water potential has very important significance for the research on the flow of soil water, drought resistance of plants, automatic control of water-saving irrigation, soil moisture monitoring, etc.

 QT-EQ15 Soil water potential meter

Principle

EQ15 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.

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

Technical parameters

EQ15

Measurement range

0~ -1500kP(0~-15bar)

Measurement accuracy

±10kPa(0~-100kPa);

±10% Reading(-100~-1500kPa)

Applicable temperature range

Operating temperature: 0~40℃;

Storage temperature: -30~70℃;

Can stay in the permafrost

Applicable soil types

Non-saline soil (EC of soil solution <1ms/cm)

Power

5~15V DC, maximum consumption: 23 mA x 5s

 Output

 100~800 mV

Size

17cm×4cm×2cm; 7.5 cm into the soil

Weight

350g (without electrode)

Cable

standard 5m, can be extended to 100 meters

Material

Stainless steel housing, sealed


Handheld terminal

CPU

Quad-Core:1.3GHz

Operating system

Android 4.2

ROM

4G

RAM

1G

Extended memory

up to 32G

Screen size

5.0 In.

Screen resolution

960*540

Operation mode

Touch screen

Screen color support

16 million

Origin: China

Channel Technology Group Limited

Tel:+86-10-62111044

Fax:+86-10-62114847

Web:/en/

Email:repair@qudao.com.cn


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