Campbell Scientific CS420 and CS425 PDCR 1830-8388 Pressure Transducer - Manual (Page 17)

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]
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