Specifications

AM25T Solid State Multiplexer
16
18: Thermocouple Temp (DIFF) (P14) ;Measure the connected thermocouple
1: 1 Reps
2: 1 5 mV Slow Range
3: 1 DIFF Channel
4: 1 Type T (Copper-Constantan)
5: 1 Ref Temp (Deg. C) Loc [ RefTemp_C ]
6: 2-- Loc [ TC_1 ]
7: 1.0 Mult
8: 0.0 Offset
19: End (P95) ;End loop
20: Do (P86) ;Turn off AM25T
1: 52 Set Port 2 Low
6.3 Example CR23X Program
The CR23X has a special instruction for measuring thermocouples or voltages
with the AM25T. Example 5 uses the instruction to measure 25 type T
thermocouples. Instruction 134 automatically compensates for long lead
lengths.
TABLE 6-4. Wiring for CR23X Example
Function AM25T CR23X
+12V Power 12 V 12 V
Power and Shield Ground
G
Clock CLK C1
Reset RES C2
RTD Excitation EX E1
Analog Ground AG
Common High HI 1H
Common Low LO 1L