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INSTRUCTION MANUAL CS650 and CS655 Water Content Reflectometers Revision: 5/15 Copyright © 2011- 2015 Campbell Scientific,

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CS650 and CS655 Water Content Reflectometers 1. Introduction The CS650 and CS655 are multiparameter smart sensors that use innovative techniques to

CS650 and CS655 Water Content Reflectometers 4. Quickstart Short Cut is an easy way to program your datalogger to measure the CS650 and assign datal

CS650 and CS655 Water Content Reflectometers 4. Select Datalogger Model and Scan Interval (default of 5 seconds is OK for most applications). Click

CS650 and CS655 Water Content Reflectometers 6. After selecting the sensor, click at the left of the screen on Wiring Diagram to see how the sensor

CS650 and CS655 Water Content Reflectometers FIGURE 5-1. CS650 Water Content Reflectometer Volumetric water content information is derived from the

CS650 and CS655 Water Content Reflectometers means of RS-232 Tx/Rx. The A200 USB-to-Serial Module allows RS-232 serial communication between a compu

CS650 and CS655 Water Content Reflectometers 6.1 Electrical Specifications Sensor Output: SDI-12 Serial RS-232 Warmup Time: 3 s Measurement Time: 3 m

CS650 and CS655 Water Content Reflectometers FIGURE 6-1. CS650 and CS655 average current drain FIGURE 6-1 shows average current drain for differen

CS650 and CS655 Water Content Reflectometers Volumetric Water Content using Topp Equation (m3/m3) Range 5% to 50% Accuracy† ±3% VWC typical in min

CS650 and CS655 Water Content Reflectometers The sensitive volume depends on the surrounding media. In soil, the sensitive volume extends approximat

CS650 and CS655 Water Content Reflectometers 7.3 Datalogger Wiring Our dataloggers typically use SDI-12 to measure the sensor because RS-232 communic

CS650 and CS655 Water Content Reflectometers and programming examples for Edlog dataloggers are provided at www.campbellsci.com\old-manuals. The SDI1

CS650 and CS655 Water Content Reflectometers FIGURE 8-1. A200 Sensor-to-PC Interface A data cable, pn 17648, ships with the A200. This cable has a

CS650 and CS655 Water Content Reflectometers 8.1.2 Device Configuration Utility (DevConfig) DevConfig may be downloaded from the Campbell Scientific

CS650 and CS655 Water Content Reflectometers 8.1.2.1 Settings Editor Tab The Settings Editor tab shows settings stored in the CS650 firmware. Settin

CS650 and CS655 Water Content Reflectometers TABLE 8-2. Real-Time Measurements Measurement Field Name Meaning VWC Volumetric Water Content EC (dS

CS650 and CS655 Water Content Reflectometers 8.1.2.2 Send OS Tab The Send OS tab is used to update the firmware in the CS650. The firmware is availa

CS650 and CS655 Water Content Reflectometers TABLE 8-3. CS650 Terminal Commands Command Values Returned Units 0 1) Volumetric Water Content, θ 2)

CS650 and CS655 Water Content Reflectometers 8.2 SDI-12 Measurements The CS650 responds to SDI-12 commands M!, M1!, M2!, M3!, ?!, and I!. TABLE 8-4

Limited Warranty “Products manufactured by CSI are warranted by CSI to be free from defects in materials and workmanship under normal use and service

CS650 and CS655 Water Content Reflectometers 8.2.1 Use of Multiplexers Multiplexers such as Campbell Scientific’s AM16/32B may be used to connect up

CS650 and CS655 Water Content Reflectometers using an electrical conductivity measurement. A calibration equation converts period and electrical cond

CS650 and CS655 Water Content Reflectometers between soil solution electrical conductivity and soil bulk electrical conductivity. Most expressions o

CS650 and CS655 Water Content Reflectometers The effect of temperature on probe electronics is minimal with period average readings varying by less th

CS650 and CS655 Water Content Reflectometers Quadratic form: θv(Ka) = C0 + C1*Ka + C2*Ka2 with θv the volumetric water content, Ka the bulk dielectri

CS650 and CS655 Water Content Reflectometers derive a calibration depends on the form of the calibration equation. At least three data sets should be

CS650 and CS655 Water Content Reflectometers equilibration is achieved. Collect a set of calibration data values and repeat the water addition proce

CS650 and CS655 Water Content Reflectometers • CS650 connected to datalogger programmed to measure probe permittivity • Cylindrical sampling devices

CS650 and CS655 Water Content Reflectometers The sample tubes should be pushed evenly into the soil surface. Remove the tube and sample and gently t

CS650 and CS655 Water Content Reflectometers To obtain mwet, subtract the cylinder empty mass and the container empty mass from the mass of the soil f

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

CS650 and CS655 Water Content Reflectometers 9. Maintenance and Troubleshooting The CS650 does not require periodic maintenance. TABLE 9-1 provides

CS650 and CS655 Water Content Reflectometers 10. References Ledieu, J., P. De Ridder, P. De Clerck, and S. Dautrebande. 1986. “A method of measuring

CS650 and CS655 Water Content Reflectometers 32

Appendix A. Importing Short Cut Code into a Program Editor This tutorial shows: • How to import a Short Cut program into a program editor for addit

Appendix A. Importing Short Cut Code After pasting, edit the information such that a ' character (single quotation mark) begins each line. This

Appendix B. Example Programs B.1 CR1000 Programs B.1.1 CR1000 with One CS650 Probe This CRBasic example program measures one CS650 probe on a CR10

Appendix B. Example Programs Public CS650(6) Public CS650_2(6) DataTable (DatoutCS650,1,-1) DataInterval (0,60,Min,2) Average (3,CS650(1),FP2,Fal

Appendix B. Example Programs Dim LCount Public CS650(12,6) DataTable (DatoutCS650,1,-1) DataInterval (0,60,Min,2) Average (72,CS650(),IEEE4,False)

Appendix B. Example Programs 'CS650 #1 SDI12Recorder (CS650(1),"0M3!",1,0) 'CS650 #2 SDI12Recorder (CS650(7),&q

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

Precautions DANGER — MANY HAZARDS ARE ASSOCIATED WITH INSTALLING, USING, MAINTAINING, AND WORKING ON OR AROUND TRIPODS, TOWERS, AND ANY ATTACHMENTS TO

Discussion of Soil Water Content C-2

Appendix D. SDI-12 Sensor Support D.1 SDI-12 Command Basics SDI-12 commands have three components: Sensor address (a) – a single character, and is

Appendix D. SDI-12 Sensor Support command is 0A2!. The sensor responds with the new address b, which in this case is 2. Send Identification Command

Appendix D. SDI-12 Sensor Support Send Data Command (aDv!) This command requests data from the sensor. It is normally issued automatically by the da

Appendix D. SDI-12 Sensor Support D.2.2 CR200(X) Series Datalogger Example 1. Connect a single CS650 to the datalogger as follows: • Green to Cont

Appendix D. SDI-12 Sensor Support D.2.3 CR1000 Datalogger Example 1. Connect a single CS650 to the datalogger as follows: • Green to Control Port

Appendix D. SDI-12 Sensor Support D-6

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Table of Contents 8.3.4.2 Insertion Error ..... 22 8.3.5 Temperature Dependence and Corr

Table of Contents Tables 6-1. Size Specifications .................... 6 6-2. Relative Di