Campbell Scientific DB1 Double Bubbler Liquid Level Sensor User Manual
Page 12
DB1 Liquid Level Measurement Sensor
3: Excitation with Delay (P22)
1: 1
EX
Chan
2: 0
Delay w/EX (units=.01sec)
3: 150
Delay after EX (units=.01sec)
4: 0
mV
Excitation
Subroutine 1 measures the pressure in the tubing connected to the second value:
4: Do (P86)
1: 1
Call Subroutine 1
5: Do (P86)
1: 52
Set low Port 2
The following instructions convert the mV readings to engineering units:
6: Z=X*Y (P36)
1: 8
X Loc AVG LEVEL
2: 4
Y
Loc
MULT.
3: 1
Z Loc [:LEVEL#1 ]
7: Z=X+Y (P33)
1: 1
X Loc LEVEL#1
2: 5
Y
Loc
OFFSET
3: 1
Z Loc [:LEVEL#1 ]
8: If time is (P92)
1: 0
minutes into a
2: 15
minute
interval
3: 10
Set high Flag 0 (output)
9: Real Time (P77)
1: 110
Day,Hour-Minute
10: Average (P71)
1: 1
Rep
2: 1
Loc
LEVEL#1
11: End Table 1
* Table 3 Subroutines
Pressure Transducer Measurement Routine:
1: Beginning of Subroutine (P85)
1: 1
Subroutine
Number
8