Operator`s manual

TABLE OF CONTENTS
iii
PROGRAMMING EXAMPLES
PAGE
7. MEASUREMENT PROGRAMMING EXAMPLES
7.1 Differential Voltage - LI200S Silicon Pyranometer ..................................................................7-1
7.2 Datalogger and Sensor with a Common External Power Supply............................................7-1
7.3 Thermocouple Temperatures Using 21X Reference ..............................................................7-2
7.4 Thermocouple Temperatures Using an External Reference Junction....................................7-2
7.5 107 Temperature Probe..........................................................................................................7-3
7.6 207 Temperature and RH Probe.............................................................................................7-3
7.7 Anemometer with Photochopper Output.................................................................................7-4
7.8 Tipping Bucket Rain Gauge with Long Leads.........................................................................7-4
7.9 100 ohm PRT in 4 Wire Half Bridge........................................................................................7-5
7.10 100 ohm PRT in 3 Wire Half Bridge........................................................................................7-6
7.11 100 ohm PRT in 4 Wire Full Bridge ........................................................................................7-7
7.12 Pressure Transducer - 4 Wire Full Bridge ..............................................................................7-8
7.13 Lysimeter - 6 Wire Full Bridge.................................................................................................7-9
7.14 227 Gypsum Soil Moisture Block ..........................................................................................7-10
7.15 Nonlinear Thermistor in Half Bridge (CSI Model 101)...........................................................7-11
7.16 Measuring 107 Temperature Probe with 60Hz Rejection .....................................................7-12
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 SDM-AO4 Analog Output Multiplexer to Strip Chart ...............................................................8-5
8.6 Converting 0-360 Wind Direction Output to 0-540 for Strip Chart...........................................8-7
8.7 Covariance Correlation Programming Example......................................................................8-8
8.8 Fast Fourier Transform Examples ........................................................................................8-11
INSTRUCTIONS
9. INPUT/OUTPUT INSTRUCTIONS
..................................................................................9-1
10. PROCESSING INSTRUCTIONS
...................................................................................10-1
11. OUTPUT PROCESSING INSTRUCTIONS
................................................................11-1
12. PROGRAM CONTROL INSTRUCTIONS
..................................................................12-1
MEASUREMENTS
13. 21X MEASUREMENTS
13.1 Fast and Slow Measurement Sequence ...............................................................................13-1
13.2 Single-Ended and Differential Voltage Measurements .........................................................13-1
13.3 The Effect of Sensor Lead Length on the Signal Settling Time ............................................13-3
13.4 Thermocouple Measurements ............................................................................................13-10
13.5 Bridge Resistance Measurements ......................................................................................13-15
13.6 Resistance Measurements Requiring AC Excitation ..........................................................13-19