Campbell OBS-3, Instruction Manual, Page: 8 / 12

Interfacing the OBS-3 Turbidity Monitor with Campbell Scientific Dataloggers
4
;Read millivolt signal
3: Volts (DIFF) (P2)
1: 1
Reps
2: 25 2500 mV 60 Hz Rejection Range ;CR23X is 25 ± 5000 mV 60 Hz Rejection Range
3: 1 DIFF Channel
4: 1 Loc [ Turbidity ]
5: 0.8 Mult ;(2000 FTU)/(2500 mV) CR23X would be 2000/5000 = 0.4
6: 0.0 Offset
;Remove power from probe
4: Do (P86)
1: 51
Set Port 1 Low
;Measure system voltage
5: Batt Voltage (P10)
1: 2
Loc [ BATT_VOLT ]
;Output every hour the date and the average turbidity, maximum
;turbidity with the time of occurrence, and battery voltage.
6: If time is (P92)
1: 0
Minutes into a
2: 60 Interval
3: 10 Set Output Flag High
7: Real Time (P77)
1: 1110
Year, Day, Hour/Minute
8: Average (P71)
1: 1
Reps
2: 1 Loc [ Turbidity ]
9: Maximize (P73)
1: 1
Reps
2: 10 Value with Hr_Min
3: 1 Loc [Turbidity ]
10: Sample (P70)
1: 1
Reps
2: 2 Loc [ BATT_VOLT ]