Instruction manual

i
AM416 RELAY MULTIPLEXER MANUAL
TABLE OF CONTENTS
PAGE
1. FUNCTION
1.1 Typical Applications................................................................................................................... 1
1.2 Compatibility .............................................................................................................................. 1
2. PHYSICAL DESCRIPTION
.................................................................................................... 1
3. AM416 SPECIFICATIONS
...................................................................................................... 3
4. OPERATION
............................................................................................................................... 3
4.1 The Control Terminals............................................................................................................... 3
4.2 The Measurement Terminals ....................................................................................................6
5. DATALOGGER PROGRAMMING
5.1 Single Loop Instruction Sequence.............................................................................................6
5.2 Multiple Loop Instruction Sequence .......................................................................................... 9
5.3 General Programming Considerations.................................................................................... 10
6. SENSOR HOOK-UP AND MEASUREMENT EXAMPLES
6.1 Single-Ended Analog Measurement without Sensor Excitation .............................................. 10
6.2 Differential Analog Measurement without Sensor Excitation................................................... 11
6.3 Half Bridge Measurements...................................................................................................... 11
6.4 Full Bridge Measurements....................................................................................................... 13
6.5 Full Bridges with Excitation Compensation ............................................................................. 13
6.6 Thermocouple Measurement .................................................................................................. 14
6.7 Mixed Sensor Types................................................................................................................ 16
7. GENERAL MEASUREMENT CONSIDERATIONS
...................................................... 18
8. INSTALLATION
8.1 Environmental Constraints................................................................................................................ 18
APPENDIX A. AM416 STUFFING CHART AND SCHEMATICS
.....................................A-1
APPENDIX B. DIFFERENCES BETWEEN THE AM416 AND AM32
............................B-2
LIST OF FIGURES
1. Plan View of the AM416 Relay Multiplexer................................................................................ 2
2. Hook-up Diagrams for Datalogger - AM416 Connections......................................................... 4
3. Power and Ground Connections for External Power Supply..................................................... 5
4. Actuation Time of Relays vs. Temperature (
o
) and Battery Voltage.......................................... 6
5. Single Loop Instruction Sequence............................................................................................. 6
6. Example Program Loops for CR10(X), 21X, and CR7 Dataloggers ......................................... 8
7. Wiring Diagram for Strain Gages and Potentiometers.............................................................. 9
8. Single-ended Measurement without Excitation ....................................................................... 11
9. Differential Measurement without Excitation ........................................................................... 11
10. Half Bridge (Modified 107 Temperature Probe) Hook-up and Measurement.......................... 12