Campbell Scientific CR10X Measurement and Control System - Manual (Page 7)

CR10X TABLE OF CONTENTS
iii
PROGRAM EXAMPLES
7. MEASUREMENT PROGRAMMING EXAMPLES
7.1 Single-Ended Voltage/Switched 12 V Terminal - CS500 ........................................................7-1
7.2 Differential Voltage Measurement...........................................................................................7-3
7.3 Thermocouple Temperatures Using the Optional CR10TCR to Measure
the Reference Temperature....................................................................................................7-4
7.4 Thermocouple Temperatures Using an External Reference Junction ....................................7-4
7.5 107 Temperature Probe ..........................................................................................................7-5
7.6 207 Temperature and RH Probe.............................................................................................7-5
7.7 Anemometer with Photochopper Output .................................................................................7-6
7.8 Tipping Bucket Rain Gage with Long Leads ...........................................................................7-7
7.9 100 ohm PRT in 4 Wire Half Bridge........................................................................................7-7
7.10 100 ohm PRT in 3 Wire Half Bridge........................................................................................7-9
7.11 100 ohm PRT in 4 Wire Full Bridge ......................................................................................7-10
7.12 Pressure Transducer - 4 Wire Full Bridge ............................................................................7-11
7.13 Lysimeter - 6 Wire Full Bridge...............................................................................................7-12
7.14 227 Gypsum Soil Moisture Block ..........................................................................................7-14
7.15 Nonlinear Thermistor in Half Bridge (Model 101 Probe) .......................................................7-15
7.16 Water Level - Geokon's Vibrating Wire Pressure Sensor.....................................................7-16
7.17 Paroscientific "T" Series Pressure Transducer .....................................................................7-20
7.18 4 to 20 mA Sensor Using CURS100 Terminal Input Module ................................................7-23
8. PROCESSING AND PROGRAM CONTROL EXAMPLES
8.1 Computation of Running Average ...........................................................................................8-1
8.2 Rainfall Intensity ......................................................................................................................8-2
8.3 Using Control Ports and Loop to Run AM416 Multiplexer.......................................................8-3
8.4 Sub 1 Minute Output Interval Synched to Real Time ..............................................................8-5
8.5 Switch Closures on Control Ports (Rain Gage).......................................................................8-5
8.6 SDM-AO4 Analog Output Multiplexer to Strip Chart ...............................................................8-6
8.7 Converting 0-360 Wind Direction Output to 0-540 for Strip Chart...........................................8-7
8.8 Use of 2 Final Storage Areas - Saving Data Prior to Event ....................................................8-8
8.9 Logarithmic Sampling Using Loops.........................................................................................8-9
8.10 Covariance Correlation Programming Example....................................................................8-11
8.11 Fast Fourier Transform Examples ........................................................................................8-15
8.12 Using the Switched 12 V to Power Sensors..........................................................................8-22
INSTRUCTIONS
9. INPUT/OUTPUT INSTRUCTIONS .....................................................................................9-1
10. PROCESSING INSTRUCTIONS ......................................................................................10-1
11. OUTPUT PROCESSING INSTRUCTIONS ...................................................................11-1
12. PROGRAM CONTROL INSTRUCTIONS ......................................................................12-1