Vaisala PTB210 SERIES Manual de Instruções Página 10
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age, there has been a concentration increase of CO
2
of about 25%, from about 280
parts per million to over 370 parts per million. Scientific studies indicate that CO
2
is one of several gases that trap heat near the surface of the Earth. These gases
are known as greenhouse gases [1]. Figure 1.1 shows the global greenhouse gas cycle.
Many scientists have concluded that substantial increases in the abundance of CO
2
will generate an increase in the Earth’s surface temperature. Historical records pro-
vide evidence of this trend, which is often called global warming. Current research
indicates that continuing increases in atmospheric CO
2
may modify the environ-
ment in a variety of ways. These changes may impact ocean currents, the jet stream
and rain patterns. Some parts of the Earth might actually cool while the average
temperature increases. Thus, a more correct term for this phenomenon is climate
change. CO
2
can enter the atmosphere from a variety of sources. Some sources are
natural, such as rotting plants, forest fires and ordinary breathing. Human activities
augment the emission of CO
2
into the atmosphere. Automobiles, factories and home
heating units burn fossil fuels such as oil, coal and natural gas. Burning these fossil
fuels releases CO
2
into the atmosphere. Other natural processes remove CO
2
from
the atmosphere. Plants use sunlight to photosynthesize CO
2
and water into sugar
and other carbohydrates. The oceans also absorb atmospheric CO
2
. Sea creatures
incorporate the CO
2
dissolved in sea water into their shells. After the death of these
creatures, their shells fall to the bottom of the ocean. Over time, these sediments
form carbonate rocks. Processes that absorb CO
2
from the atmosphere are often
referred to as sinks. The complete process of CO
2
exchange is known as the carbon
cycle [1].
In order to improve the understanding of the carbon cycle, the Carbon Dioxide
Information Analysis Center of the U. S. Department of Energy tracks and monitors
CO
2
emissions from a global network of ground-based sites. This network provides
a tremendous amount of insight into the global abundance of CO
2
and its variability
of changes in seasons [1].
10
- Test and Installation of an 1
- Diploma Thesis 1
- Affidavit 2
- Acknowledgement 3
- Abstract 4
- Contents 6
- Chapter 1 9
- 12.09.09] 11
- Chapter 2 13
- The Sensors 13
- [http://upload.wikimedia.org/ 15
- Figure 2.4: Sensing Element 16
- Figure 2.10: Main Components 22
- Figure 2.11: Vaisala PTB 210 23
- Figure 2.17: CMOSens Chip 28
- 20.10.08] 28
- Chapter 3 29
- Data Acquisition 29
- 3.1.1 Connecting Panel 30
- Figure 3.5: CS I/O Port 32
- Figure 3.6: Peripheral Port 32
- 3.1.2 Peripheral Devices 33
- Chapter 4 35
- Programming 35
- 4.2 Structure 36
- 4.3 Declarations 37
- 4.4 Data Tables 40
- Table 4.2: Typical Data Table 41
- 4.4.2 DataInterval() 42
- 4.5 Program - Main Scan 46
- 4.5.1 Instructions 47
- 4.5.2 Expressions 50
- Chapter 5 52
- The Sensors - Test Series 52
- 5.2 Air Duct 61
- Chapter 6 62
- 6.2 Mounting 63
- Figure 6.4: Wind Speed 65
- Chapter 7 66
- Evaluation 66
- 7.1.2 FTP Server 67
- 7.1.3 Test Readings 69
- Figure 7.7: Pressure 70
- Chapter 8 71
- Conclusion 71
- List of Figures 73
- List of Tables 76
- Bibliography 77
- Appendix A 79
- Appendix B 85
- CRBasic - Input file CONST.CR1 85
- WEATHER STATION 86
- 1.1 Introduction 92
- 1.2 The Sensors 93
- 1.2.2 Wind Speed 96
- Lambrecht 14577 96
- 1.2.3 Precipitaion 99
- Lambrecht 15153 99
- 1.2.4 Precipitaion 103
- Lambrecht 15152 103
- 1.2.5 Solar Radiation 105
- Kipp & Zonen CMP3 105
- Table 1.2: Connection diagram 107
- 1.2.6 Pressure 108
- Vaisala PTB210 108
- Table 1.3: Connection Diagram 114
- 1.2.7 Temperature Probe 115
- Campbell Scientific T107 115
- Table 1.4: Connection Diagram 116
- 1.2.8 Temperature/Humidity 117
- Campbell Scientific CS215 117
- Table 1.5: Connection Diagram 118
- 1.3.1 Connecting Panel 119
- Figure 1.26: CS I/O Port 121
- Figure 1.27: Peripheral Port 121
- 1.3.2 Peripheral Devices 122
- 1.3.3 Programming 124
- 1.4 Wiring Panel 127
- 1.4.7 Power Supply - Box 130
- A.1 CRBasic - Weather Station 131
- A.3 CRBasic - powerup.ini 137
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