Campbell CSIOPC Dokumentacja Strona 24
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Section 2. Quickstart Tutorial
2-6
2.1.7 Bridge Sensors
Bridge sensors change resistance with respect to environmental change.
Resistance is determined by measuring the difference between the excitation
voltage supplied to the bridge by the CR1000 and the voltage detected by the
CR1000 returning from the bridge. The CR1000 supplies a precise excitation
voltage via excitation terminals. Return voltage is measured on analog
terminals (FIGURE 2.1-4).
Potentiometer from Wind Vane Wired to Excitation Channel #1
H L EX1
4
78
DIFF
SE
P
FIGURE 2.1-4. Half and Full Bridge Wiring
EX1
L
H
- CR1000 Measurement and 1
- Control System 1
- Warranty and Assistance 2
- CR1000 Table of Contents 3
- ...................... 11-3 7
- ......... 9-22 14
- . ................ 11-8 14
- Section 1. Introduction 17
- This is a blank page 18
- 2.1.1.1 Sensors 19
- 2.1.1.2 Datalogger 19
- 2.1.1.3 Data Retrieval 19
- 2.1.2 CR1000 Mounting 20
- 2.1.3 Wiring Panel 20
- 2.1.4 Battery Backup 20
- 2.1.5 Power Supply 20
- 2.1.6 Analog Sensors 22
- 2.1.7 Bridge Sensors 24
- EX1 P1 P2 25
- 2.1.10 RS-232 Sensors 26
- Thermocouple 27
- 2.2.2 PC200W Software 28
- 2.2.2.4 Sending the Program 34
- 2.2.2.6 Collecting Data 34
- 2.2.2.7 Viewing Data 35
- Section 3. Overview 37
- 3.1.1 Sensor Support 38
- 3.1.2.2 Voltage Outputs 39
- 3.1.2.3 Grounding Terminals 40
- 3.1.2.4 Power Terminals 40
- 3.1.3 Power Requirements 42
- 3.1.4.2 User Programming 43
- 3.1.6 Communications 44
- 3.1.6.3 DNP3 Communication 45
- 3.1.6.4 Keyboard Display 45
- 3.1.7 Security 46
- 3.1.8 Care and Maintenance 46
- 3.2 PC Support Software 47
- 3.3 Specifications 49
- Section 4. Sensor Support 51
- 4.2 Voltage Measurement 52
- 4.2.1 Measurement Sequence 53
- 4.2.2 Voltage Range 54
- 4.2.5 Integration 58
- 4.2.6 Signal Settling Time 60
- 4.2.7 Self-Calibration 63
- VoltSe() 64
- 4.3.1 Strain Calculations 69
- 4.4.1 Error Analysis 71
- Panel Temperature ºC 72
- Time Minutes 73
- Measured - Actual degrees C 73
- 4.4.1.7 Error Summary 78
- 4.5 Pulse Count Measurement 79
- Pulse Channel 80
- ±0.5 V 82
- Silicon diodes 83
- 4.7 SDI-12 Measurements 84
- 4.8 RS-232 Measurements 84
- Peripherals 85
- 5.4.1 Binary Control 86
- 5.6 Other Peripherals 87
- 5.6.2 Vibrating Wire 88
- 5.6.3 Low-level AC 88
- 6.1 Power Requirement 89
- 6.4 Battery Connection 89
- Section 7. Grounding 91
- 7.2 Common Mode Range 93
- 8.1 DevConfig 97
- 8.3 Settings via DevConfig 100
- 8.3.1 Deployment Tab 103
- 8.3.1.3 Advanced Sub-Tab 105
- 8.3.2 Logger Control Tab 106
- 9.3 Writing CR1000 Programs 109
- 9.3.2 CRBASIC Editor 110
- 9.4 Numerical Formats 111
- 9.5 Structure 112
- 9.6 Declarations 114
- 9.6.1.2 Dimensions 115
- 9.6.1.3 Data Types 115
- 9.6.2 Constants 118
- 9.7 Data Tables 119
- 9.7.1 Data Tables 121
- 9.7.1.2 DataInterval() 122
- 9.8 Subroutines 124
- 9.11.2 Sequential Mode 127
- 9.12 Instructions 128
- for each repetition 129
- 9.13 Expressions 130
- 9.13.4 Logical Expressions 133
- 9.13.5 String Expressions 135
- Instructions 139
- 10.2.1 Data Table Modifiers 141
- 10.2.3.1 Single-Source 142
- 10.2.3.2 Multiple-Source 143
- 10.2.4 Histograms 144
- 10.4.1 Common Controls 145
- 10.4.2 Advanced Controls 147
- 10.5.1 Diagnostics 148
- 10.5.2 Voltage 148
- 10.5.3 Thermocouples 149
- 10.5.4 Bridge Measurements 149
- 10.5.7 Digital I/O 150
- WriteIO 151
- SDI12SensorSetup 151
- CS110Shutter 152
- Therm108 152
- Therm109 152
- SDMIO16 153
- SDMSIO4 153
- SDMSpeed 153
- SDMTrigger 154
- Mult, Offset) 154
- 10.6.2 Logical Operators 156
- 10.6.4 Arithmetic Functions 158
- DewPoint 160
- 10.6.7 Other Functions 161
- 10.7 String Functions 162
- 10.8 Clock Functions 164
- 10.11 Serial Input / Output 167
- 10.13 Variable Management 172
- 10.14 File Management 172
- 10.16 Information Services 175
- 10.17 Modem Control 176
- 10.18 SCADA 177
- 10.19 Calibration Functions 177
- 10.20.1 Argos 178
- GOESStatus 179
- 10.20.4 INMARSAT-C 180
- Library 181
- 11.1.2 CRBASIC Programming 182
- Two Point Slope and Offset 183
- -50 % -52.5 % 184
- 11.1.5.2 Offset (Option 1) 185
- 53.90 l 53.92 l 187
- 11.2 Information Services 194
- 11.2.2 HTTP Web Server 195
- 11.2.3 FTP Server 198
- 11.2.4 FTP Client 198
- 11.3 SDI-12 Sensor Support 200
- 11.3.3 Addressing 201
- 11.3.4 Making Measurements 202
- 11.3.5.1 Send Data Command 204
- 11.4 Subroutines 207
- 11.5 Wind Vector 207
- 11.5.2.1 Measured Raw Data 209
- 11.5.2.2 Calculations 209
- Θ NS/)'s)'(( 211
- 11.6 CR1000KD Custom Menus 212
- 11.8 Serial Input 214
- 11.9 Callback 214
- 11.12 NSEC Data Type 216
- 12.2 CompactFlash 222
- 12.1 Internal SRAM 222
- 12.3 Memory Drives 223
- 12.4 Memory Conservation 224
- 12.5 Memory Reset 224
- 12.6 File Control 224
- 12.6.1 File Attributes 226
- 12.6.2 CF Power-up 227
- Data Retrieval 231
- 13.2 Protocols 232
- 13.4 Data Retrieval 233
- Section 14. PakBus Overview 235
- 14.4.4 Neighbor Lists 237
- 14.4.5 Adjusting Links 237
- 14.5 Troubleshooting 238
- 14.5.2 Ping 239
- 14.5.3 Traffic Flow 239
- Resource Library 241
- 15.2 Modbus 242
- 15.2.2 Terminology 243
- 15.2.3.1 Declarations 244
- 15.2.4 Troubleshooting 246
- Section 16. Support Software 251
- 16.6 PDA Software 253
- Keyboard Display 255
- CR1000 Display 256
- 17.1 Data Display 257
- 17.1.1 Real Time Tables 258
- 17.1.2 Real Time Custom 259
- 17.1.3 Final Storage Tables 260
- Move the cursor 262
- 17.3.1 File: Edit 263
- 17.5 Ports and Status 265
- 17.6 Settings 266
- 17.6.1 Set Time / Date 267
- 17.6.2 PakBus Settings 267
- 17.6.3 Configure Display 267
- 18.1 Temperature Range 269
- 18.2 Moisture Protection 269
- 18.3 Enclosures 269
- Logan, Utah 271
- DESI PAK 273
- Section 19. Troubleshooting 275
- Section 19. Troubleshooting 277
- 19.2 Communications 279
- 19.3 Memory Errors 279
- 19.4.1 Overview 280
- Appendix A. Glossary 285
- Appendix A. Glossary 286
- A.2 Concepts 294
- Appendix B. Status Table 295
- Appendix B. Status Table 296
- Appendix D. ASCII Table 309
- Appendix D. ASCII Table 310
- Index to Sections 311
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