Campbell Scientific AM25T 25-Channel Solid State Multiplexer User Manual
Page 21
AM25T Solid State Multiplexer
09: BR Transform Rf[X/(1-X)] (P59)
;Calculate RTD resistance R/R0
1: 1
Reps
2: 1
Loc [ RefTemp_C ]
3: 10.025 Multiplier
(Rf)
10: Temperature RTD (P16)
;Calculate reference temperature
1: 1
Reps
2: 1
R/R0 Loc [ RefTemp_C ]
3: 1
Loc [ RefTemp_C ]
4: 1.0
Mult
5: 0.0
Offset
11: Do (P86)
;Reset multiplexer
1: 72
Pulse
Port
2
12: Beginning of Loop (P87)
;Loop through thermocouple channels
1: 0
Delay
2: 25
Loop
Count
13: Do (P86)
;Clock the AM25T twice
1: 71
Pulse
Port
1
14: Do (P86)
1: 71
Pulse
Port
1
15: Thermocouple Temp (DIFF) (P14)
;Measure the connected thermocouple
1: 1
Reps
2: 21
2.5 mV 60 Hz Rejection 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
16: End (P95)
;End loop
17: Do (P86)
;Turn off AM25T
1: 52
Set Port 2 Low
17