Specifications

AM25T Solid State Multiplexer Table of Contents
ii
Figures
1. AM25T Thermocouple Multiplexer........................................................... 3
2. External Battery Connections .................................................................... 6
3. Differential Measurement of Type T Thermocouple ................................. 7
4. Differential Voltage Measurement............................................................. 7
A-1. Single-Ended Measurement of a Type T Thermocouple................... A-2
A-2. Single-Ended Measurement............................................................... A-5
Tables
3-1. Datalogger to AM25T Wiring ................................................................ 5
6-1. RTD Excitation Voltage and Measurement Range for AM25T
Multiplexers Prior to Serial Number 1839.......................................... 9
6-2. Wiring for CR10(X) Examples............................................................... 9
6-3. Wiring for 21X Examples..................................................................... 12
6-4. Wiring for CR23X Example................................................................. 16
6-5. Wiring for CR1000 Program Example................................................. 20
A-1. Values in Input Storage; Input Location Not Indexed....................... A-5
A-2. Values in Input Storage; with Input Location Index and without
Step Loop Index Instruction............................................................ A-6
A-3. Values in Input Storage; with Input Location Index and Step
Loop Index Instruction.................................................................... A-6
Program Examples
1. CR10(X) Program for Measuring 25 Type T Thermocouples or
Voltage Sensors Using a Differential Instruction................................ 9
2. CR10(X) Program for Measuring 25 Type T Thermocouples with
the Differential Thermocouple Instruction and Long Lead
Length Compensation on the RTD Measurement............................. 10
3. 21X Program for Measuring 25 Type T Thermocouples or Voltage
Sensors Using a Differential Instruction ........................................... 13
4. 21X Program for Measuring 25 Type T Thermocouples with the
Differential Thermocouple Instruction and Long Lead Length
Compensation on the RTD Measurement ......................................... 14
5. CR23X Program for Measuring 25 Type T Thermocouples.................... 17
6. CR1000 Program Example ...................................................................... 20
A-1. CR10 Program for Measuring 50 Type T Thermocouples or
Voltage Sensors Using a Single-Ended Instruction......................... A-2
A-2. 21X Program for Measuring 50 Type T Thermocouples or
Voltage Sensors Using Single-Ended Instruction .......................... A-3
A-3. Single-Ended Thermocouples, Input Location Not Indexed ............. A-6
A-4. Measuring Single-Ended Thermocouples with the Input
Location Indexed and no Step Loop Index .....................................A-7
A-5. Measuring Single-Ended Thermocouples with the Input
Location Indexed and Step Loop Index ......................................... A-7