Campbell-scientific OBS3 Turbidity Sensor Manuel d'utilisateur télécharger pdf (Page 9)

Interfacing the OBS-3 Turbidity Monitor with Campbell Scientific Dataloggers

2.4 CRBasic Program Example

'CR1000

'Declare Variables and Units

Public Batt_Volt

Public FTU

Units Batt_Volt=Volts

'Define Data Tables

DataTable(Table1,True,-1)

DataInterval(0,60,Min,10)

Average(1,FTU,IEEE4,False)

Maximum(1,FTU,IEEE4,False,True)

EndTable

DataTable(Table2,True,-1)

DataInterval(0,1440,Min,10)

Minimum(1,Batt_Volt,FP2,False,False)

EndTable

'Main Program

BeginProg

Scan(30,Min,1,0)

'Default Datalogger Battery Voltage measurement Batt_Volt:

Battery(Batt_Volt)

'OBS-3 Turbidity Probe (D&A Instruments) measurement FTU:

PortSet(9,1)

Delay(0,3,Sec)

VoltDiff(FTU,1,mV5000,1,True,0,_60Hz,0.4,0) 'MULTIPLIER: (2000 FTU)/(5000 mV) = 0.4

PortSet(9,0)

'Call Data Tables and Store Data

CallTable(Table1)

CallTable(Table2)

NextScan

EndProg

3. Maintenance and Troubleshooting

Follow the maintenance and troubleshooting procedures that are outlined in the

OBS-3 technical manual provided by D & A Instrument Company.

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Campbell-scientific OBS3 Turbidity Sensor Manuel d'utilisateur Page 9