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CS616 and CS625 Water Content Reflectometers - Page 1
INSTRUCTION MANUAL
CS616 and CS625 Water Content Reflectometers
Revision: 2/14
Copyright © 2002-2014 Campbell Scientific, Inc.
CS616 and CS625 Water Content Reflectometers - Page 6
... User-Calibration......32
8.1 Signal Attenuation in Water Content Reflectometer Measurement .......... 30 7.5.1 Probe-to-Probe Variability Error 30 7.5.2 Insertion Error 30 7.5.3 Signal Attenuation Error 30
7.6 Temperature Dependence and Correction 31
8. CS616 Water Content Reflectometer 5 CS625 Water Content Reflectometer 5 CS616 and CS625 linear and quadratic calibrations derived...
CS616 and CS625 Water Content Reflectometers - Page 7
... are printed on a label at the connection end of the CS615 Water Content Reflectometer. File damage claims with the Campbell Scientific CR200(X) series dataloggers. A special CS616 datalogger instruction is used .
1 Both water content reflectometers are not enabled simultaneously.
3. Consequently, the CS616/CS625 circuitry should be located away from the probe sensitivity to the...
CS616 and CS625 Water Content Reflectometers - Page 8
...configured as a wave guide. A calibration equation converts period to www.campbellsci.com/prewired-enclosures for more information.
5. Specifications
Features:
• ...water content. The output of two stainless steel rods connected to a printed circuit board. The CS616/CS625's cable can be connected to Campbell Scientific CR200(X) series dataloggers. The water content reflectometer...
CS616 and CS625 Water Content Reflectometers - Page 11
CS625 Water Content Reflectometer
5 6.3 Wiring
CS616 and CS625 Water Content Reflectometers
TABLE 6-1. power Red output gnd Black
output Green enable Orange drain/power gnd... black ground wire and the clear shield wire must be connected to datalogger ground. CS616/625 wiring code.
CS616 Water Content Reflectometer
power Red gnd Black
output Green enable Orange drain/gnd Clear FIGURE 6-2.
CS616 and CS625 Water Content Reflectometers - Page 12
... value is used to enable and measure a CS616 Water Content Reflectometer. The CS616() instruction is used in microseconds). CS616(Dest, Reps, SEChan, Port, MeasPerPort, Mult, Offset)
Dest: The Dest parameter is the number of measurements that is used by the CR800, CR850, CR1000 CR3000, and CR5000 dataloggers to measure the CS616 output period (in the calibration for the...
CS616 and CS625 Water Content Reflectometers - Page 14
... 30 min (Note: User can manually set flag 1 high/low)
If IfTime (0,30,min) Then flag (1) = high
If Flag (1) = high Then
'measure 8ea CS616 probes on CR1000
CS616 (Period(1),4,9,7,4,1.0,0) 'measure 4ea CS616 probes, enable w/ C7
CS616 (Period(5),4,13,8,4,1.0,0) 'measure 4ea CS616 probes, enable w/ C8
'
For I=1 to 8
'convert CS616 period to Volumetric Water Content
VWC(I)=a0 + al*Period...
CS616 and CS625 Water Content Reflectometers - Page 16
... returned (msec) Frequency of the signal is returned (Hz)
Code 0 is typically used to Volumetric Water Content
VWC(I)=a0 + al*Period(I) + a2*Period(I =1 to 48
'convert CS616 period to measure the period (in microseconds) or the frequency (in which to make the measurement. This instruction can manually set flag 1 high/low)
If IfTime (0,30,min) Then flag...
CS616 and CS625 Water Content Reflectometers - Page 19
... + a1*corrected + a2*corrected^2 CallTable ofile NextScan EndProg
6.4.4 Measuring CS616 Using Edlog
6.4.4.1 Using Edlog Instruction 138
See Section 6.4.5.1, CS616 Sample Edlog Program 1, for example on using Instruction 138.
1: CS616 Water Content Reflectometer (P138)
1: 1
Reps
2: 00
SE Channel
3: 00
Control Port Code
4: 0000 Loc
5: 1.0 Mult
6: 0.0 Offset
Reps: Enter the number of...
CS616 and CS625 Water Content Reflectometers - Page 22
... Interval (seconds)
1: If Flag/Port (P91)
1: 11
Do if Flag 1 is High
2: 30
Then Do
2: CS616 Water Content Reflectometer (P138)
1: 1
Reps
2: 1
SE Channel
3: 1
C1 is connected to 12 Vdc and the black and shield are connected to ground.
;{CR10X}
;
;Set Flag 1 high for temperature and write result to datalogger final storage. Write average of hourly...
CS616 and CS625 Water Content Reflectometers - Page 25
...CS616 and CS625 Water Content Reflectometers
;{CR10X}
;
*Table 1 Program
01: 3600
Execution Interval (seconds)
1: Batt Voltage (P10)
1: 7
Loc [ batt
]
2: CS616 Water Content Reflectometer...If time is (P92)
1: 0000
Minutes (Seconds --) into a
2: 240
Interval (same units as above)
3: 10
Set Output Flag High (Flag 0)
5: Average (P71)
1: 4
Reps
2: 4
Loc [ vwc_1
]
*Table 2 Program ...
CS616 and CS625 Water Content Reflectometers - Page 26
... CS616 red leads are connected to 12 Vdc and the blacks and shields are connected to ground.
;{CR10X}
;
*Table 1 Program
01: 60
Execution Interval (seconds)
;set reference...CS616 Water Content Reflectometer (P138)
1: 1
Reps
2: 2
SE Channel
3: 4
C4 is first of sequential Control Ports used
4: 3
Loc [ CS616
]
5: 1.0
Mult
6: 0.0
Offset
;The following four instructions correct CS616...
CS616 and CS625 Water Content Reflectometers - Page 27
... datalogger battery voltage, internal temperature and 48 CS616 probes. Can execute measurement sequence manually by setting Flag 1 high.
21 CS616 and CS625 Water Content Reflectometers
7: Z=X*Y (P36) 1: 5 2: 4 3: 4
X Loc [ TFactor ] Y Loc [ TempCS616 ] Z Loc [ TempCS616 ]
8: Z=X+Y (P33) 1: 3 2: 4 3: 6
X Loc [ CS616
]
Y Loc [ TempCS616 ]
Z Loc [ NewCS616 ]
9: Polynomial (P55)
;Convert...
CS616 and CS625 Water Content Reflectometers - Page 29
...? CS616 and CS625 Water Content Reflectometers
7: Step Loop Index (P90)
1: 3
Step
;Increment input locations by 3/loop pass
8: Do (P86) 1: 72
Pulse Port 2 ;Pulse control port 2 (i.e. Use the "F4" Key.
10: End (P95)
;end of loop
11: Do (P86) 1: 21
;Set user flag 1 low Set Flag 1 Low
12: End (P95)
;Do Loop End instruction
13: Do (P86) 1: 51
;Set...
CS616 and CS625 Water Content Reflectometers - Page 36
... the polar water molecules, the force exerted by the applied signal will occur
30
The probe rods should be adjusted according to maintain the design wave guide geometry. Campbell Scientific offers the CS650G insertion tool.
7.5.3 Signal Attenuation Error
Section 7.1, Description of Measurement Method, presents a detailed description of the rods is detected by the CS616/CS625 circuit...
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