Campbell-scientific CR10X Measurement and Control System Manual de usuario descargar pdf (Pagina 350)

LIST OF FIGURES

LF-2

PAGE

7.16-1 A Vibrating Wire Sensor ....................................................................................................... 7-16

7.16-2 Well Monitoring Example...................................................................................................... 7-18

7.16-3 Hook up to AVW1................................................................................................................. 7-19

7.17-1 CR10X/Paroscientific "T" Series Transducer Wiring Diagram ............................................. 7-22

7.18-1 Wiring Diagram for CURS100 Terminal Input Module and 4 to 20 mA Sensor ................... 7-24

8. PROCESSING AND PROGRAM CONTROL EXAMPLES

8.3-1 AM416 Wiring Diagram for Thermocouple and Soil Moisture Block Measurements ............. 8-4

8.5-1 Connections for Rain Gage .................................................................................................... 8-5

8.11-1 Simulated 1.25 and 0.25 Hz Signals..................................................................................... 8-15

8.11-2 FFT Power Spectra Analysis of 0.25 and 1.25 Hz Signal..................................................... 8-16

8.11-3 Simulated Ocean Buoy Wave Data...................................................................................... 8-19

8.11-4 Simulated Ocean Buoy FFT Results .................................................................................... 8-19

8.12-1 Connections to Power Two 12 V ASPTCs with the Switched 12 V on the

CR10X Wiring Panel ............................................................................................................ 8-23

9. INPUT/OUTPUT INSTRUCTIONS

9-1 Conditioning Large Voltage Pulses......................................................................................... 9-2

9-2 Recommended input conditioning circuit for period averaging............................................. 9-16

10. PROCESSING INSTRUCTIONS

10-1 Quadrant that the Angle Falls in is Defined by the Sign of x and y..................................... 10-16

11. OUTPUT PROCESSING INSTRUCTIONS

11-1 Input Sample Vectors ........................................................................................................... 11-2

11-2 Mean Wind Vector................................................................................................................ 11-3

11-3 Standard Deviation of Direction............................................................................................ 11-3

13. CR10X MEASUREMENTS

13.1-1 50 and 60 Hz Noise Rejection .............................................................................................. 13-1

13.2-1 Timing of Single-Ended Measurement ................................................................................. 13-2

13.2-2 Differential Voltage Measurement Sequence....................................................................... 13-2

13.3-1 Input Voltage Rise and Transient Decay.............................................................................. 13-4

13.3-2 Typical Resistive Half Bridge................................................................................................ 13-5

13.3-3 Source Resistance Model for Half Bridge Connected to the CR10X ................................... 13-5

13.3-4 Wire Manufacturers Capacitance Specifications, Cw ..........................................................13-6

13.3-5 Model 024A Wind Direction Sensor ..................................................................................... 13-6

13.3-6 Resistive Half Bridge Connected to Single-Ended CR10X Input.......................................... 13-7

13.3-7 Half Bridge Configuration for YSI #44032 Thermistor Connected to CR10X..................... 13-11

13.3-8 Measuring Input Settling Error with the CR10X.................................................................. 13-12

13.3-9 Incorrect Lead Wire Extension on Model 107 Temperature Sensor .................................. 13-12

13.4-1 Thermistor Polynomial Error............................................................................................... 13-14

13.4-2 Diagram of Junction Box .................................................................................................... 13-17

13.5-1 Circuits Used with Instructions 4-9 ..................................................................................... 13-18

13.5-2 Excitation and Measurement Sequence for 4 Wire Full Bridge.......................................... 13-19

13.6-1 AC Excitation and Measurement Sequence for AC Half Bridge......................................... 13-21

13.6-2 Model of Resistive Sensor with Ground Loop .................................................................... 13-21

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Campbell-scientific CR10X Measurement and Control System Manual de usuario Pagina 350

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Campbell-scientific CR10X Measurement and Control System Manual de usuario Pagina 350

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