Campbell CS616 Manuel d'instructions Page 1

INSTRUCTION MANUAL CS616 and CS625 Water Content Reflectometers Revision: 2/14 Copyright © 2002- 2 014 Campbell Scientific

CS616 and CS625 Water Content Reflectometers 5.4 Operational Details The accuracy specification for the volumetric water content measurement using th

CS616 and CS625 Water Content Reflectometers 6.3 Wiring TABLE 6-1. CS616/625 wiring code. color function datalogger connection red +12 V +12 V g

CS616 and CS625 Water Content Reflectometers 6.4 Datalogger Instructions and Programming This section is for users who write their own programs. A d

CS616 and CS625 Water Content Reflectometers Code Description 1 Control Port 1 2 Control Port 2 3 Control Port 3 4 Control Port 4 5 Control Port

CS616 and CS625 Water Content Reflectometers CR1000 Program Example 1 'Declare Public and Dim Variables Public batt_volt Public Panel_temp Public

CS616 and CS625 Water Content Reflectometers 6.4.1.2 CS616 Sample CRBasic Program 2 The following CR1000 program uses the AM16/32-series multiplexer

CS616 and CS625 Water Content Reflectometers 'Main Program BeginProg Scan (5,Sec,0,0) 'scan instructions every 5 sec Battery (Batt_v

CS616 and CS625 Water Content Reflectometers Timeout: The Timeout parameter is the maximum time duration, in milliseconds, that the datalogger will wa

CS616 and CS625 Water Content Reflectometers 'CR200(X) program to read 4 CS625s 'Standard calibration is used to convert CS625 output &apos

CS616 and CS625 Water Content Reflectometers 'CR200(X) program to read 1 109 temperature probe and 1 CS625. 'Use temperature to correct CS62

CS616 and CS625 Water Content Reflectometers SE Chan: Enter the single-ended analog channel where the sensor’s green wire is connected. When Reps is

CS616 and CS625 Water Content Reflectometers Reps: Enter the number of CS616s that will be measured with the instruction. The sensors must be wired in

CS616 and CS625 Water Content Reflectometers 6.4.5 Sample Edlog Programs for CS616 TABLE 6-3. CS616 Sample Edlog Programs Sample Program Number Pr

CS616 and CS625 Water Content Reflectometers 3: Polynomial (P55) 1: 1 Reps 2: 1 X Loc [ period ] 3: 2 F(X) Loc [ VWC ] 4

CS616 and CS625 Water Content Reflectometers 3: Polynomial (P55) 1: 1 Reps 2: 1 X Loc [ period ] 3: 2 F(X) Loc [ vwc ] 4

CS616 and CS625 Water Content Reflectometers ;{CR10X} ; *Table 1 Program 01: 3600 Execution Interval (seconds) 1: Batt Voltage (P10) 1: 7

CS616 and CS625 Water Content Reflectometers Sensor lead CR10X CS616 green Single-Ended Channel 2 (SE2) CS616 orange Control Port 4 (C4) 107 red S

CS616 and CS625 Water Content Reflectometers 7: Z=X*Y (P36) 1: 5 X Loc [ TFactor ] 2: 4 Y Loc [ TempCS616 ] 3: 4 Z Loc [ TempCS6

CS616 and CS625 Water Content Reflectometers Sensor lead AM16/32 CR10X CS616-1 green 1H CS616-2 green 1L CS616-3 green 2H CS616-1,2,3 orang

CS616 and CS625 Water Content Reflectometers 7: Step Loop Index (P90) ;Increment input locations by 3/loop pass 1: 3 Step 8: Do (P86) 1:

Warranty “PRODUCTS MANUFACTURED BY CAMPBELL SCIENTIFIC, INC. are warranted by Campbell Scientific, Inc. (“Campbell”) to be free from defects in materi

CS616 and CS625 Water Content Reflectometers 53 VWC_2 9 1 1 . . 99 VWC_48 17 1 1 7. The Water Content Reflectometer Method for Measuring Volu

CS616 and CS625 Water Content Reflectometers 16 18 20 22 24 26 28 30 3200.10.20.30.4calibration datalinear fitquadratic fitOutput period (microseconds

CS616 and CS625 Water Content Reflectometers FIGURE 7-2 compares the CS616/CS625 response in the FIGURE 7-1 loam soil to a higher density sandy clay l

CS616 and CS625 Water Content Reflectometers 7.3 Calibration Equations TABLE 7-1 lists the calibration coefficients derived in the Campbell Scientifi

CS616 and CS625 Water Content Reflectometers FIGURE 7-3. Difference in % volumetric water content between linear and quadratic forms of calibrations

CS616 and CS625 Water Content Reflectometers 7.4 Operating Range 7.4.1 Soil Electrical Conductivity The quality of soil water measurements which app

CS616 and CS625 Water Content Reflectometers The electromagnetic energy introduced by the probe acts to re-orientate or polarize the water molecules.

CS616 and CS625 Water Content Reflectometers if there are free ions in soil solution, polar solid constituents such as organic matter or some clay, or

CS616 and CS625 Water Content Reflectometers 10 15 20 25 30 35 404202468Water Content = 30%Water Content = 12%Water Content Error with TemperatureSoil

CS616 and CS625 Water Content Reflectometers Some clays are very polar and/or conductive and will also attenuate the applied signal. Additionally, if

Assistance Products may not be returned without prior authorization. The following contact information is for US and international customers residing

CS616 and CS625 Water Content Reflectometers 8.3 Collecting Laboratory Data for Calibration Water content reflectometer data needed for CS616/CS625 c

CS616 and CS625 Water Content Reflectometers The typically used method for packing a container of soil to uniform bulk density is to roughly separate

CS616 and CS625 Water Content Reflectometers Method D4643-93 requires heating in microwave for 3 minutes, cooling in desiccator then weighing and repe

CS616 and CS625 Water Content Reflectometers with θv , the volumetric water content (m3 m-3); τ, the CS616/CS625 period (microseconds); Co , the inter

CS616 and CS625 Water Content Reflectometers Gravimetric water content is calculated after the container weight is accounted for. θgwet drydrym mm=−

CS616 and CS625 Water Content Reflectometers To obtain soil bulk density, use ρbulkdrycylindermvolume= Volumetric water content is calculated using θ

CS616 and CS625 Water Content Reflectometers 40

Appendix A. Discussion of Soil Water Content The water content reflectometer measures volumetric water content. Soil water content is expressed on a

Appendix A. Discussion of Soil Water Content A-2

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Table of Contents 7.4 Operating Range ... 29 7.4.1 Soil Electrical Cond

CS616 and CS625 Water Content Reflectometers 1. Introduction The CS616 Water Content Reflectometer is an improved version of the CS615 Water Content

CS616 and CS625 Water Content Reflectometers The CS625 output is a square wave output and can be connected to Campbell Scientific CR200(X) series data

CS616 and CS625 Water Content Reflectometers CS625 Compatibility Dataloggers: CR200X series CR200 series Probe-to-Probe Variability: ±0.5% V