Campbell-scientific CR3000 Micrologger Manuale Utente Pagina 262
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Section 7. Installation
262
Table 52. PRTCalc() Type-Code-6 Sensor
Standard ITS-90 SPRT, alpha = 0.003926 (Reference: Minco /
Instrunet)
Constant Coefficient
a 3.9848000E-03
d -2.3480000E-06
e 1.8226630E-05
f -1.1740000E-06
g 1.6319630E+00
h -2.4709290E+00
i 8.8283240E+00
j 2.5091300E+02
7.8.18.2 Measuring PT100s (100-Ohm PRTs)
PT100s (100-ohm PRTs) are readily available. The CR3000 can measure PT100s
in several configurations, each with its own advantages.
The CR3000 is also equipped to measure PRTs with current excitation.
7.8.18.2.1 Self-Heating and Resolution
PRT measurements present a dichotomy. Excitation voltage should be maximized
to maximize the measurement resolution. Conversely, excitation voltage should
be minimized to minimize self-heating of the PRT.
If the voltage drop across the PRT is 50 mV, self-heating should be less than
0.001°C in still air. To maximize measurement resolution, optimize the excitation
voltage (Vx) such that the voltage drop spans, but does not exceed, the ±50-mV
input range.
7.8.18.2.2 PT100 in Four-Wire Half-Bridge
Example Shows:
• How to measure a PRT in a four-wire half-bridge configuration
• How to compensate for long leads
Advantages:
• High accuracy with long leads
Example PRT Specifications:
• Alpha = 0.00385 (PRT Type 1)
A four-wire half-bridge, measured with BrHalf4W(), is the best configuration for
accuracy in cases where the PRT is separated from bridge resistors by a lead
length having more than a few thousandths of an ohm resistance. In this example,
- CR3000 Measurement and 1
- Control System 1
- Warranty 3
- Assistance 5
- Table of Contents 7
- List of Figures 19
- List of Tables 21
- List of CRBasic Examples 24
- Section 1. Introduction 27
- 4.1.1.1 Sensors 33
- 4.1.1.2 Datalogger 33
- 4.1.1.3 Data Retrieval 33
- 4.1.2.1 Wiring Panel 34
- 4.1.2.2 Power Supply 35
- 4.1.2.3 Backup Battery 35
- 4.1.3 Sensors 36
- 4.1.3.2 Bridge Sensors 37
- 4.1.3.3 Pulse Sensors 39
- 4.1.3.4 RS-232 Sensors 41
- 4.1.4 Digital I/O Ports 42
- 4.1.5 SDM Channels 43
- 4.2.1 What You Will Need 43
- 4.2.2 Hardware Setup 44
- 4.2.3 PC200W Software Setup 45
- Section 5. System Overview 57
- 5.1 CR3000 Datalogger 58
- 5.1.1 Clock 59
- 5.1.2 Sensor Support 59
- 5.1.3 CR3000 Wiring Panel 60
- 5.1.3.3 Grounding Terminals 62
- 5.1.3.4 Power Terminals 62
- 5.1.3.5 Communications Ports 63
- 5.1.4 Power Requirements 64
- 5.1.5 Programming 65
- (p. 335) 66
- (p. 529) ) 66
- (p. 564) ) 66
- 5.1.7 Data Retrieval 67
- 5.1.8 Communications 68
- 5.1.8.2 Modbus 69
- 5.1.8.3 DNP3 Communication 69
- 5.1.8.4 Keyboard Display 69
- 5.1.9 Security 70
- 5.1.9.1 Vulnerabilities 71
- 5.1.9.2 Pass-code Lockout 72
- 5.1.9.3 Passwords 73
- 5.1.9.4 File Encryption 74
- 5.1.10 Maintenance 75
- 5.1.10.3 Calibration 76
- 5.1.10.4 Internal Battery 76
- formoreinformation. 79
- Section 7. Installation 81
- 7.4 Power Sources 82
- 7.4.3 Power Supplies 83
- 7.4.3.2 Internal Batteries 84
- (p. 567) 85
- (p. 87) lists the 86
- (p. 438) 86
- (p. 88) 86
- (p. 87) 86
- (p. 567) ) will 88
- (p. 82) 89
- (p. 89) 89
- (p. 333) 89
- to understand 90
- (p. 89). Voltage on a 91
- 7.5 Grounding 92
- 7.5.1.1 Lightning Protection 93
- (p. 92), use of a simple 94
- (p. 94) shows a simple 94
- 7.6 CR3000 Configuration 97
- (p. 100) ) lists 99
- (p. 100), when the 99
- command. Beginning 100
- 7.6.3 Settings 101
- (p. 70) 104
- (p. 106), the 104
- 7.6.3.2 Settings via CRBasic 108
- 7.6.3.3 Durable Settings 108
- Section 7. Installation 110
- 7.6.3.5 Network Planner 112
- 7.7 Programming 114
- 7.7.2 Sending Programs 115
- 7.7.3 Syntax 117
- 7.7.3.3 Command Line 119
- (p. 122) shows 121
- (p. 241) 123
- Table 12. Data Types 124
- (p. 126) shows an example 126
- (p. 127) 127
- (p. 192) 127
- (p. 445) ) 127
- (p. 206) ) 129
- 7.7.3.5 Declared Sequences 130
- (p. 132). The data file 131
- (p. 131) 131
- (p. 132) 131
- (p. 153) for a list 132
- (p. 132), data 132
- (p. 136) ) 133
- (p.419)). 134
- (p. 279) 135
- (p. 138) 138
- 2. Background calibration 139
- 4. Processing tasks 139
- 7.7.3.7 Execution Timing 140
- (p. 141): 141
- (p. 141), the scan is 142
- (p. 295) 142
- 7.7.3.8 Instructions 144
- (p. 145) 145
- 7.7.3.9 Expressions 147
- (p. 155) 148
- (p. 155) shows 148
- (p. 151) demonstrate 151
- (p. 152) demonstrates 152
- 7.7.4 Tips 155
- 7.8.1.1 CAL Files 156
- 7.8.1.2 CRBasic Programming 156
- (p. 164) and Two Point 158
- (p. 456) menu commands to 158
- (p. 160) to the 159
- (p. 161) 161
- (p. 163) to the 163
- (p. 165) to the CR3000 164
- (p. 166) to 166
- (p. 456) menu to delete 168
- (p. 169) as a program to 168
- (p. 169) sent to the 170
- (p. 170), keep the 249-k 170
- (p. 171) 170
- 7.8.2 Information Services 171
- (p. 569) 172
- (p. 173), this page 172
- (p. 174) 173
- CRBasicExample32. HTML 175
- 7.8.2.4 FTP Server 176
- 7.8.2.5 FTP Client 176
- 7.8.2.6 Telnet 176
- 7.8.2.7 SNMP 176
- 7.8.2.8 Ping 176
- 7.8.3 SDI-12 Sensor Support 177
- (p. 178) 178
- (p. 183) summarizes CR3000 183
- (p. 211) 188
- (p. 190) 189
- 7.8.4 Subroutines 192
- 7.8.5 Wind Vector 193
- (p. 197) ) that 196
- 7.8.6 Custom Menus 198
- (p. 201) 199
- (p. 199) through Custom 201
- 7.8.8 Serial I/O 205
- 7.8.8.1 Introduction 206
- 7.8.8.2 I/O Ports 207
- 7.8.8.3 Protocols 207
- 7.8.8.4 Glossary of Terms 208
- 7.8.8.5 CRBasic Programming 209
- (p. 211) ). Data may be 213
- 7.8.8.6 Testing Applications 216
- (p. 220) imports 220
- (p. 404 220
- 7.8.8.7 Q & A 225
- Processing 227
- 7.8.10 NSEC Data Type 228
- 7.8.10.1 NSEC Options 229
- 7.8.11 Bool8 Data Type 232
- (p. 450) of 236
- (p. 237), summarizes the 236
- (p. 458) ). The CR3000 236
- 7.8.13 String Operations 241
- 7.8.13.1 String Operators 242
- 7.8.14 Data Tables 245
- (p. 60) ) 246
- 7.8.16 Program Signatures 247
- (p. 252) demonstrates: 252
- 7.8.17.5 Scaling Array 255
- 7.8.17.6 Conditional Output 256
- 7.8.17.7 Capturing Events 257
- 7.8.18 PRT Measurement 258
- (p. 264) for wiring diagram 264
- 0.50 V > (V 265
- * 115.54)/(9900+115.54) 265
- < 4.33 V 265
- 7.8.19 Running Average 271
- Section 8. Operation 279
- 8.1.2 Voltage 280
- 8.1.2.1 Input Limits 281
- 8.1.2.2 Reducing Error 282
- 8.1.2.3 Measurement Sequence 283
- 8.1.2.4 Measurement Accuracy 284
- 8.1.2.5 Voltage Range 286
- (p. 286) ) 287
- 8.1.2.7 Integration 289
- (p. 290) and 290
- (p. 290) 290
- 8.1.2.8 Signal Settling Time 291
- (p. 292), and are 292
- (p. 114) 293
- Section 8. Operation 294
- 8.1.2.9 Self-Calibration 295
- (p. 296) 296
- (p. 563) 300
- (p. 300) and Resistive 300
- 8.1.3.1 ac Excitation 303
- 8.1.3.3 Strain Calculations 305
- 8.1.4 Thermocouple 306
- 8.1.4.1 Error Analysis 307
- (p. 309). In 308
- (p. 310) shows the errors 308
- (p. 310) 308
- (p. 313) 312
- (p. 315) and Reference 316
- (p. 307) show that the 317
- 8.1.5 Pulse 318
- (p. 562) for information 321
- (p. 323) 322
- (p. 323) 322
- (p. 327) 322
- (p. 323), digital 323
- Scan Rising Edge / Scan E 324
- 5.0 50 50 324
- 0.5 5 5 324
- 0.05 0.5 1 324
- (p. 325) 325
- (p. 40) ). To avoid over 326
- (p. 326) lists low-level ac 326
- (p. 326) footnote 326
- 8.1.6 Period Averaging 327
- 8.1.7 SDI-12 Recording 328
- 8.1.8 RS-232 and TTL 329
- 8.1.9 Field Calibration 329
- 8.1.10 Cabling Effects 329
- 8.1.10.3 Pulse Sensors 330
- 8.1.10.4 RS-232 Sensors 330
- 8.1.10.5 SDI-12 Sensors 330
- , www.campbellsci.com, or 332
- 8.2.4 Control Outputs 333
- (p. 334) 334
- 8.2.6 TIMs 335
- 8.2.7 Vibrating Wire 335
- 8.2.8 Low-level ac 335
- 8.3.1 Storage Media 335
- Table 79. CR3000 SRAM Memory 337
- 8.3.1.1 Data Storage 338
- (p. 352) for 340
- (p.473) 342
- format. 343
- 8.3.2 Memory Conservation 344
- 8.3.3 Memory Reset 345
- 8.3.4 File Management 346
- 8.3.4.1 File Attributes 347
- 8.3.4.2 Data Preservation 348
- (p. 456) command 349
- (p. 350) 350
- (p. 458) or 350
- 8.3.5 File Names 352
- 8.3.6 File System Errors 352
- 8.3.7 Memory Q & A 353
- (p. 354) lists 354
- 8.4.2 Protocols 355
- 8.5 PakBus Overview 356
- for a table of available 357
- (p. 356) ): 358
- 8.5.3.4 Neighbor Lists 359
- 8.5.3.5 Adjusting Links 359
- 8.5.4 PakBus Troubleshooting 360
- 8.5.4.2 Ping 361
- 8.5.4.3 Traffic Flow 361
- 8.5.6 PakBus LAN Example 362
- 8.5.6.2 LAN Setup 363
- 8.5.6.3 LoggerNet Setup 366
- (p. 367), set the 367
- 8.5.7 PakBus Encryption 368
- 8.6.1 DNP3 369
- (p.371), 370
- (p.371),line24. 370
- (p. 371), program the 371
- 8.6.2 Modbus 372
- (p. 374) shows the 374
- 8.6.2.4 Troubleshooting 375
- 8.6.2.5 Modbus over IP 376
- 8.6.2.6 Modbus tidBytes 376
- 8.6.3 Web Service API 377
- 8.6.3.2 Command Syntax 378
- (p. 380) 379
- 8.6.3.3 Time Syntax 380
- 8.6.3.4 Data Management 380
- section 381
- (p. 380) section) 385
- (p. 380) for 385
- (p. 380) for format 385
- XML Response 387
- 8.6.3.5 Control 390
- 8.6.3.6 Clock Functions 392
- 8.6.3.7 Files Management 396
- (p. 76) Connect screen 397
- HTML page source: 401
- 8.7 Support Software 404
- 8.8.1 Data Display 407
- 8.8.1.2 Real-Time Custom 408
- Figure 124: Real-time custom 409
- 8.8.1.3 Final-Storage Tables 410
- 8.8.2 Run/Stop Program 411
- 8.8.3 File Display 412
- Figure 128: File: edit 413
- 8.8.5 Ports and Status 414
- 8.8.6 Settings 415
- 8.8.7 Configure Display 416
- Small program 2,600 1,113 418
- Large program 32,157 7,085 418
- (p. 76), the 419
- Section 9. Maintenance 421
- Manufacturer Tadiran 422
- Model TL-5902S (3.6 V) 422
- Capacity 1.2 Ah 422
- 9.3 Repair 424
- Section 10. Troubleshooting 427
- 10.3.1.1 CompileResults 428
- 10.3.1.2 SkippedScan 429
- 10.3.1.3 SkippedSlowScan 429
- 10.3.1.4 SkippedRecord 429
- 10.3.1.5 ProgErrors 430
- 10.3.1.6 MemoryFree 430
- 10.3.1.7 VarOutOfBounds 430
- 10.3.1.8 WatchdogErrors 430
- 10.3.4 NAN and ±INF 432
- 10.4 Communications 435
- 10.4.3.2 CommsMemFree(2) 437
- 10.4.3.3 CommsMemFree(3) 437
- 10.5 Power Supplies 438
- 10.5.3.1 Battery Test 439
- 12V terminal and a G 441
- OFF and allow 441
- (p. 3) 442
- 443
- Section 10. Troubleshooting 444
- 10.6 Terminal Emulator 445
- (p. 446) 446
- Section 11. Glossary 449
- (p.461) 450
- (p.451). 451
- (p.470). 452
- (p. 76) 456
- (p.542). 458
- (p.171)and 459
- (p. 569) ) to 460
- (p.463). 461
- (p.97)software.Themost 462
- Battery(BattV) 463
- (p.473). 464
- (p.464). 464
- (p.76).TheSend 467
- (p.76).A 470
- (p.571).Software 470
- (p.449)). 470
- (p.466). 470
- (p.452). 470
- 11.2 Concepts 473
- (p. 473) shows 474
- Instructions 475
- (p.171). 476
- A.2 Data-Table Declarations 477
- A.2.2 Data Destinations 478
- A.2.3.1 Single-Source 479
- A.2.3.2 Multiple-Source 480
- (p. 193) 481
- A.5 Measurement Instructions 485
- A.5.2 Voltage 486
- A.5.3 Thermocouples 486
- A.5.5 Excitation 487
- A.5.6 Pulse and Frequency 488
- A.5.7 Digital I/O 488
- A.5.8 SDI-12 489
- A.5.9 Specific Sensors 490
- A.6.1 Mathematical Operators 495
- A.6.2 Arithmetic Operators 495
- A.6.3 Bitwise Operators 496
- A.6.5 Logical Operators 497
- A.6.6.1 Derived Functions 498
- A.6.6.2 Intrinsic Functions 499
- A.6.7 Arithmetic Functions 500
- A.6.8 Integrated Processing 502
- A.6.9 Spatial Processing 502
- A.6.10 Other Functions 503
- A.6.10.1 Histograms 504
- A.7 String Functions 505
- A.8 Clock Functions 508
- A.9 Voice-Modem Instructions 509
- A.11 Serial Input / Output 512
- Broadcast(ComPort, Message) 514
- A.13 Variable Management 517
- A.14 File Management 518
- A.16 Information Services 521
- A.17 Modem Control 524
- A.18 SCADA 524
- A.19 Calibration Functions 525
- A.20 Satellite Systems 526
- A.20.2 GOES 527
- A.20.3 OMNISAT 527
- A.21 User Defined Functions 528
- (p. 97) 529
- (p. 437) (see 530
- (p. 437) ) 530
- (p. 437) 537
- Table 125. CR3000 Settings 542
- C.2.1 Pin-Out 551
- C.2.2 Power States 552
- Connections* 553
- Appendix E. FP2 Data Format 559
- Products 561
- F.2 Sensor Input Modules 562
- F.3 Cameras 564
- F.4 Control Output Modules 565
- F.5 Dataloggers 565
- F.6 Power Supplies 566
- F.6.2 Batteries 567
- F.6.3 Battery Bases 567
- F.6.4 Regulators 567
- F.7 Enclosures 568
- F.8.1 Keyboard Display 569
- F.8.3 Ethernet Link Devices 569
- F.9 Data Storage Devices 570
- F.10.1 Starter Software 571
- F.10.2.1 LoggerNet Suite 572
- F.10.3 Software Tools 573
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