Campbell DB1 Spécifications télécharger pdf (Page 10)

DB1 Liquid Level Measurement Sensor

5. Programming

Every 60 seconds, the following program examples calculate the pressure

transducer multiplier, measure the offset, and measure the liquid level. The

average liquid level is stored in final memory every 15 minutes.

5.1 CR1000 Example

'CRBasic code for CR1000, CR800, or CR850

Public WtrLvl

Public Batt_Volt

Dim i

Dim j

Dim mv

Dim Sum

Dim Mult

Dim Offset

Dim Valve(3)

Dim Delta_mV

Const Delta_H = 'Set Delta_H equal to the vertical difference between the

upper tube and lower tube.

'Unit of measurement of Delta_H will determine unit of measurement of final output.

'\\\\\\\\\\\\\\\\\\\\\\\\ OUTPUT SECTION ////////////////////////

DataTable(Table1,true,-1

DataInterval(0,5,Min,10)

Sample (1,WtrLvl,FP2)

EndTable

DataTable(Table2,true,-1)

DataInterval(0,1440,min,10)

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

EndTable

'\\\\\\\\\\\\\\\\\\\\\\\\\\\ PROGRAM ////////////////////////////

BeginProg

Scan(5,Min, 3, 0)

Battery(Batt_Volt)

For i = 1 To 3

Select Case i

Case 1

PortSet(1,1) 'Open valve to lower tube

Case 2

PortSet(2,1) 'Open valve to upper tube

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 16 17 18

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Campbell DB1 Spécifications Page 10