MONITORING SYSTEMS FOR VERIFICATION OF MASS AND ENERGY

1,83

MB

TRANSPORT MODELS IN POROUS MEDIA

77

stron

5094

ID

Instytut Agrofizyki PAN

2005

rok

CONTENTS

1. Introduction.7

2. Modelling of water and heat movement in the soil.8

3. Smart sensors and smart networks in the measurement of soil parameters.13

3.1. Smart sensors and smart sensor interfaces .13

3.2. Measurement systems in Agrophysics .16

3.3. Material and methods .17

3.4. Results and discussion20

3.5. Conclusions 22

3.6. List of symbols and abbreviations 22

4. Examples of monitoring sensors and systems for verification of mass and energy transport

models in porous media 24

4.1. TDR soil water content and salinity measurement .24

4.1.1. Status of water as significant issue of agrophysics24

4.1.2. Selectivity of the method.24

4.1.3. Electric measurement of soil moisture 25

4.1.4. Time domain reflectometry application in electric moisture measurement27

4.1.5. The principle of electric measurement of moisture .27

4.1.6. The principle of the measurement of electromagnetic wave propagation velocity by

reflectometric method.29

4.1.7. TDR meters for soil water content from the Institute of Agrophysics Polish Academy of

Sciences in Lublin.31

4.1.8. Summary .39

4.2. Soil water potential measurements using Peltier psychrometers40

4.2.1. Meter and sensor descriptions .41

4.2.2. Calibration of the psychrometric probes .45

4.2.3. Conclusions .50

4.3. Ion-selective electrodes for the determination of selected ion concentration in soils51

4.3.1. Ion-selective electrodes basics.51

4.3.2. ISE application is soil testing 53

4.3.3. Interdisciplinary cooperation for the measurement of selected ions concentration in the soil

.54

4.3.3.1. Potentiometric studies on polymeric membrane sensors54

4.3.3.2. Measurement system of selected ion concentration in soil/ground with the application of

ion-selective electrodes .55

4.3.3.3. Validation the method of measurement of selected ion concentration55

4.4. Multi Interface Data Logger as a part of a soil monitoring system 57

4.4.1. Functional description .58

4.4.1.1. SLAVE module61

4.4.1.2. MASTER module 62

4.4.2. MIDL system handling63

4.4.2.1. Configuration of basic parameters of the MIDL system 64

4.4.2.2. System files65

4.4.2.3. Executable script files 65

4.4.3. Testing the MIDL data logger .66

4.4.4. Summary .68

5. General summary69

6. References.70

7. Index of figures.74