Three barrel compensating type evaporation and penetration measuring device

A compensatory, evapotranspiration technology, used in measuring devices, lubrication indicating devices, liquid/fluid solids measurement, etc., can solve the problem of lack of plant evapotranspiration observation system data and other problems, achieve simple operation and maintenance, small footprint, high precision high effect

Inactive Publication Date: 2004-07-21
DALIAN UNIV OF TECH
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AI Technical Summary

Problems solved by technology

China's wetland research has just started, and there is a lack of systematic data on plant evapotranspiration observations in wetland environments

Method used

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  • Three barrel compensating type evaporation and penetration measuring device
  • Three barrel compensating type evaporation and penetration measuring device
  • Three barrel compensating type evaporation and penetration measuring device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0029] The method and specific implementation steps for measuring the evapotranspiration of reeds in Zhalong Wetland by using the three-tube compensating lysimeter are as follows:

[0030] step 1

[0031] Three stainless steel cylinders (the specifications are all 1.5-2mm wall thickness, 120cm high, and cylinder mouth area 3000cm 2 , Diameter of 61.8cm, equivalent to the area and diameter of the standard E-601 evaporating dish) is installed in the reed growing area in a layout with the center of the circle spaced 90 cm apart and the center of the circle is on a straight line. When installing, put the cylinder on the reed 9 without disturbing its growth environment. The steel cylinder handrails 6 are pressed into the lower layer of silt evenly after applying force, and the depth is 80-90cm. At this time, the free water surface 7 in the cylinder is 30-40cm away from the mouth of the cylinder. .

[0032] Step 2

[0033] will figure 1 , 2 The reed 9 in the tube shown is cut 10 cm abo...

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Abstract

A device has characteristics as the follows: three cylinders are made of stainless steel as bottom is ground sharp, two handles are symmetrically welded at outside of cylinder wall, transducer is fixed at inner wall by triangle supports as three support points are equipped separately with height adjusting device for scale, stainless steel guide tube is welded on three cylinders wall with tube outer end being flated on outer wall of cylinder, screen casing is set tube opening, one of cylinders has its opening covered by head, sealed with gasket at edge; air hole is set on cylinder wall with windproof casing on it, 24 VDC is for three transducers and data can be automatically collected and processed in the device.

Description

Technical field [0001] The invention belongs to the field of plant physiology, ecological monitoring and wetland meteorological and hydrological measurement devices. It involves the automatic observation of the evapotranspiration of aquatic plants in the wetland environment, the evaporation of free water surface, and the infiltration in the wetland environment. Especially related to the comparative observation device of plant evapotranspiration, water surface evaporation, and wet ground infiltration. Background technique [0002] At present, domestic and foreign direct measurement devices for plant evapotranspiration, water surface evaporation, and infiltration are mainly divided into four categories: [0003] The first category, lysimeters, use mass balance methods to determine the evapotranspiration and infiltration of various plants, for example, Liu Shiping’s "New Lysimeter and Its Application in the Research of Farmland Hydrological Processes" used Lysimeter. The lysimeter m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F23/296G01N7/00
Inventor 许士国王昊
Owner DALIAN UNIV OF TECH
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