2 cr23x and 21x examples, 1 instruction 6 (4-wire full bridge measurement), 1 wiring – Campbell Scientific CS420 and CS425 PDCR 1830-8388 Pressure Transducer User Manual
Page 17: 2 edlog program
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CS420-L and CS425-L Pressure Transducers
7.2 CR23X and 21X Examples
7.2.1 Instruction 6 (4-Wire Full Bridge Measurement)
7.2.1.1 Wiring
Datalogger
CS420-L/CS425-L
Excitation
E1
Red (Supply +)
Input
H1
Yellow (Output +)
Input
L1
Blue (Output -)
G
White (Supply -)
G
Clear
(Shield)
The orange and black wires are not used and the ends of these wires should be
taped to prevent shorting.
7.2.1.2 Edlog Program
; Measure one 4-wire DRUCK Sensor.
* Table 1 Program
01: 5
Execution
Interval
(seconds)
1: Full Bridge (P6)
1: 1
Reps
2: 22*
50 mV, 60 Hz Rejection, Slow Range
3: 1
DIFF
Channel
4: 1
Excite all reps w/Exchan 1
5: 5000
mV
Excitation
6: 1
Loc
[DEPTH_FT]
7: 2.3529 Mult
8: -0.49
Offset
*for 21X use Range Code 3
; Every 60 minutes output the array ID, time,
; and average water depth in feet.
2: If time is (P92)
1: 0000
Minutes
into
a
2: 60
Minute
Interval
3: 10
Set output flag high
3: Real Time (P77)
1: 110
Day, Hour/Minute (midnight = 0000)
4: Average (P71)
1: 1
Reps
2: 1
Loc
[DEPTH_FT]
13