Campbell AM25T Specifiche

AM25T Solid State MultiplexerRevision: 2/06Copyright © 1995-2006Campbell Scientific, Inc.

AM25T Solid State Multiplexer 6 AM25T FIGURE 2. External Battery Connections 4. Sensor to AM25T Wiring This section and the examples describe differ

AM25T Solid State Multiplexer 7 FIGURE 3. Differential Measurement of Type T Thermocouple 4.2 Differential Analog Measurements Connect one differen

AM25T Solid State Multiplexer 8 recommends use of Teflon, polyethylene, or polypropylene insulation around individual conductors. Do not use PVC as c

AM25T Solid State Multiplexer 9 Input locations within the measurement loops must be indexed (--), see Instruction 87 in the datalogger manual. To in

AM25T Solid State Multiplexer 10 04: BR Transform Rf[X/(1-X)] (P59) ;Calculate RTD resistance R/R0 1: 1 Reps 2: 1 Loc [ RefTemp_C ] 3: 10.

AM25T Solid State Multiplexer 11 03: Full Bridge (P6) ;Measure the output of the reference temp. full bridge, Vs 1: 1 Reps 2: 23 25 mV 60 H

AM25T Solid State Multiplexer 12 12: Beginning of Loop (P87) ;Loop through thermocouple channels 1: 0 Delay 2: 25 Loop Count 13: Do (P86)

AM25T Solid State Multiplexer 13 Example 3. 21X Program for Measuring 25 Type T Thermocouples or Voltage Sensors Using a Differential Instruction *Ta

AM25T Solid State Multiplexer 14 10: Thermocouple Temp (DIFF) (P14) ;Measure the connected thermocouple 1: 1 Reps 2: 1 5 mV Slow Range 3:

AM25T Solid State Multiplexer 15 06: Z=X/Y (P38) ;Calculate Vs/Vx 1: 27 X Loc [ Vs_______ ] 2: 28 Y Loc [ Vx ] 3: 1 Z Lo

Warranty and Assistance The AM25T SOLID STATE MULTIPLEXER is warranted by CAMPBELL SCIENTIFIC, INC. to be free from defects in materials and workmansh

AM25T Solid State Multiplexer 16 18: Thermocouple Temp (DIFF) (P14) ;Measure the connected thermocouple 1: 1 Reps 2: 1 5 mV Slow Range 3:

AM25T Solid State Multiplexer 17 Example 5. CR23X Program for Measuring 25 Type T Thermocouples ;{CR23X} ; *Table 1 Program 01: 1 Execution Interv

AM25T Solid State Multiplexer 18 The AM25T instruction has the following parameters: Dest: The Dest parameter is a variable in which to store the resu

AM25T Solid State Multiplexer 19 ClkPort: The ClkPort argument is the control port that will be used to clock the AM25T. One clock port may be used wi

AM25T Solid State Multiplexer 20 Mult, Offset: The Mult and Offset parameters are each a constant, variable, array, or expression by which to scale th

A-1 Appendix A. Single-Ended Measurements Single-ended measurements with the AM25T are not recommended. This is not due to any problem with the AM25

Appendix A. Single-Ended Measurements A-2 A.1.1 Thermocouple Measurements Wire the high side of each thermocouple into an input terminal. The low s

Appendix A. Single-Ended Measurements A-3 05: Temperature RTD (P16) ;Calculate reference temperature 1: 1 Reps 2: 1 R/R0 Loc [ RefTemp_C ]

Appendix A. Single-Ended Measurements A-4 03: BR Transform Rf[X/(1-X)] (P59) ;Calculate RTD resistance R/R0 1: 1 Reps 2: 1 Loc [ RefTemp_C

Appendix A. Single-Ended Measurements A-5 FIGURE A-2. Single-Ended Measurement A.2 Indexing with Loops When a multiplexer is measured with a measu

i AM25T Solid State Multiplexer Table of Contents PDF viewers note: These page numbers refer to the printed version of this document. Use the Adobe

Appendix A. Single-Ended Measurements A-6 instruction has one repetition. If the instruction has two repetitions, then every other Input Location wi

Appendix A. Single-Ended Measurements A-7 Example A-4. Measuring Single Ended Thermocouples with the Input Location Indexed and no Step Loop Index

Appendix A. Single-Ended Measurements A-8 This is a blank page.

B-1 Appendix B. Differences Between the AM25T, AM416, and the AM32 The AM25T differs from Campbell Scientific's AM416 and AM32 multiplexers in t

Appendix B. Differences Between the AM25T, AM416, and the AM32 B-2 This is a blank page.

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Campbell Scientific CompaniesCampbell Scientific, Inc. (CSI)815 West 1800 NorthLogan, Utah 84321UNITED [email protected]

AM25T Solid State Multiplexer Table of Contents ii Figures 1. AM25T Thermocouple Multiplexer...

1 AM25T Solid State Multiplexer 1. General The AM25T Multiplexer increases the number of channels for measuring thermocouples or voltage sensors with

AM25T Solid State Multiplexer 2 OPERATING TEMPERATURE Standard: -40°C to +85°C RTD accuracy ±0.4°C OPERATING HUMIDITY Noncondensing: 0 − 95% DIMENSIO

AM25T Solid State Multiplexer 3 The terminal strips that run the length of the AM25T are for sensor connections. All inputs are protected by spark ga

AM25T Solid State Multiplexer 4 Ground (GND) Each differential input channel has a ground terminal located next to it. The ground terminal is common

AM25T Solid State Multiplexer 5 U-bolts are used to attach the enclosures to a 1.25" NPT pipe. The enclosure may also be lag-bolted to a wall or