CS615 WATER CONTENT REFLECTOMETER
7
The calibration coefficients in the example
programs are demonstrative only. See Section
9 for information on calibration.
10.1 SAMPLE PROGRAM 1
Simple program using the Period Averaging
Instruction (P27) of a CR10 datalogger to read a
single CS615. The measurement is taken
hourly and the period and water content are
written to output storage.
CR10
CS615
Single-Ended
Channel 1 (SE1)
green
Control Port 5 (C5)
orange
The red lead is connected to 12VDC and the
black and shield are connected to ground.
;{CR10}
;
*Table 1 Program
01:
5.0
Execution Interval (seconds)
1: If time is (P92) ;take reading hourly
1:
0000
Minutes (Seconds --) into a
2:
60
Interval (same units as above)
3:
30
Then Do
2: Do (P86)
1:
45
Set Port 5 High;enable CS615
3: Period Average (SE) (P27)
1:
1
Reps
2:
4
2 V Peak to Peak/200 kHz
Max. Freq.
3:
1
SE Channel
4:
10
No. of Cycles
5:
5
Timeout (units = 0.01 seconds)
6:
1
Loc [ 615period ]
7:
.001
Mult
8:
0.0
Offset
4: Do (P86) ;disable CS615
1:
55
Set Port 5 Low
5: Polynomial (P55) ;convert period to water content
1:
1
Reps
2:
1
X Loc [ 615period ]
3:
2
F(X) Loc [ 615water ]
4:
-0.187
C0
5:
0.037
C1
6:
0.335
C2
7:
0.0
C3
8:
0.0
C4
9:
0.0
C5
6: Do (P86)
1:
10
Set Output Flag High
7: Real Time (P77)
1:
0220
Day,Hour/Minute
8: Sample (P70)
1:
2
Reps
2:
1
Loc [615period]
9: End (P95)
End Program
10.2 SAMPLE PROGRAM 2
Simple program using the Pulse Count Instruction
(P3) of a CR10, CR500 or 21X datalogger to read
a single CS615. The Water Content
Reflectometer is queried when Flag 1 is set high.
The measurement is made and the period and
water content values are written to output storage.
CR10 or 21X
CS615
Pulse Count
Channel 1 (P1)
green
Control Port 5 (C5)
orange
The red lead is connected to 12VDC and the
black and shield are connected to ground.
;{CR10, CR500 or 21X}
;
*Table 1 Program
01:
1.0
Execution Interval (seconds)
1: If Flag/Port (P91) ;set flag1 high to initiate
reading
1:
11
Do if Flag 1 is High
2:
30
Then Do
2: Do (P86) ;enable CS615
1:
45
Set Port 5 High
3: Beginning of Loop (P87) ;delay for complete
count interval
1:
1
Delay
2:
2
Loop Count
4: End (P95)
5: Pulse (P3) ;determine CS615 output frequency
1:
1
Reps
2:
1
Pulse Input Channel
3:
21
Low Level AC, Output Hz
4:
1
Loc [ 615kHz ]
5:
.001
Mult ;convert to kHz
6:
0.0
Offset
