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AM16/32B Relay Multiplexer Table of Contents

6.6.2 Single-ended Thermocouple Measurement .................................. 33

6.6.3 Differential Thermocouple Measurement .................................... 34

6.7 Mixed Sensor Types............................................................................... 34

6.7.1 Mixed Sensor Example: Soil Moisture Blocks and Thermocouples34

7. General Measurement Considerations ....................38

8. Installation ..................................................................38

8.1 Mounting Tabs ....................................................................................... 39

8.2 Controlling Humidity............................................................................. 39

Appendix

A. AM16/32B Improvements........................................ A-1

Figures

1. AM16/32B Relay Multiplexer ................................................................... 3

2. AM16/32B Relay Actuation Time vs. Temperature and Battery

Voltage.................................................................................................... 5

3. AM16/32B to Datalogger Power/Control Hookup using CABLE4CBL

or MUXPOWER Cable........................................................................... 6

4. Diagram Showing Advancement of Channels using Clocking Mode B .... 8

5. Power and Ground Connections for External Power Supply ................... 10

6. Typical AM16/32B to Datalogger Signal Hookup (4x16 Mode)

using CABLE4CBL or MUXSIGNAL Cable....................................... 11

7. SCWIN (Short Cut for Windows Program Builder) ................................ 13

8. Example “4x16” Mode Program Loops for CR23X, CR10(X), 21X

and CR7 Loggers .................................................................................. 21

9. Example “2x32” Mode Program Loops for CR23X, CR10(X), 21X

and CR7 Loggers .................................................................................. 22

10. Wiring Diagram for Strain Gages and Potentiometers........................... 23

11. Single-ended Measurement without Excitation...................................... 26

12. Differential Measurement without Excitation........................................ 26

13. Half Bridge (Modified 107 Temperature Probe) Hook-up and

Measurement......................................................................................... 28

14. Potentiometer Hook-up and Measurement (using CABLE4CBL or

MUXSIGNAL cable)............................................................................ 28

15. Four Wire Half Bridge Hook-up and Measurement............................... 29

16. Full Bridge Measurement....................................................................... 30

17. Full Bridge Measurement with Excitation Compensation ..................... 31

18. Differential Thermocouple Measurement with Reference Junction

at the Datalogger ................................................................................... 32

19. Differential Thermocouple Measurement with Reference Junction

at the AM16/32B................................................................................... 32

20. AM16/32B Aluminum Cover Plate........................................................ 33

21. Thermocouple and Soil Block Measurement for CR10X Example ....... 35

22. Mounting Tab Hole Pattern.................................................................... 39

Table

1. Single Loop Instruction Sequence............................................................ 18

1 2 3 4 5 6 7 8 9 ... 49 50

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