Vaisala PTB210 SERIES Instruction Manual download pdf (Page 59)

output range from 500 to 1100 hPa were done. The programmable logic control was

set up to steps of 50 hPa within a timeframe of 15 minutes.

Pressure Measurement as a Function of Time

The graph of pressure as a function of time gives an account of the excellent accuracy

of the digital barometers from Vaisala.

Figure 5.7: Pressure Measurement as a Function of Time

There are almost no variances in pressure readings, neither according to the climate

chamber reference device DPI 740 nor to the sensors itself.

The overshooting reﬂects the process of line-up.

1 2 ... 54 55 56 57 58 59 60 61 62 63 64 ... 136 137

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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