Campbell-scientific CS650 and CS655 Water Content Reflectometers Uživatelský manuál

INSTRUCTION MANUAL CS650 and CS655 Water Content Reflectometers Revision: 2/14 Copyright © 2011- 2014 Campbell Scientific,

CS650 and CS655 Water Content Reflectometers FIGURE 4-1. 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 compute

CS650 and CS655 Water Content Reflectometers 5.2 Electrical Specifications Sensor Output: SDI-12 Serial RS-232 Warmup Time: 3 s Measurement Time: 3 m

CS650 and CS655 Water Content Reflectometers FIGURE 5-1. CS650 and CS655 average current drain FIGURE 5-1 shows average current drain for different

CS650 and CS655 Water Content Reflectometers CS650 CS655 Volumetric Water Content using Topp Equation (m3/m3) Range: 5% to 50% 5% to 50% Ac

CS650 and CS655 Water Content Reflectometers 6. Installation 6.1 Orientation and Placement The CS650 measures the bulk dielectric permittivity, aver

CS650 and CS655 Water Content Reflectometers FIGURE 6-1. CS650G Insertion Guide Tool 6.3 Wiring CS650 connections to a datalogger are shown below.

CS650 and CS655 Water Content Reflectometers SDI-12 communication has the advantage that up to ten probes may be given different addresses and share a

CS650 and CS655 Water Content Reflectometers Drivers should be loaded before plugging the A200 into the PC. The A200 drivers can be downloaded, at n

CS650 and CS655 Water Content Reflectometers FIGURE 6-2. A200 Sensor-to-PC Interface 6.4.2 Device Configuration Utility (DevConfig) DevConfig may b

CS650 and CS655 Water Content Reflectometers Select the appropriate PC Serial Port from the list of available COM ports shown when the browse button

CS650 and CS655 Water Content Reflectometers 6.4.2.1 Settings Editor Tab The Settings Editor tab shows settings stored in the CS650 firmware. Settin

CS650 and CS655 Water Content Reflectometers Real-Time Measurements Measurement Field Name Meaning VWC Volumetric Water Content EC (dS/m) Bulk Ele

CS650 and CS655 Water Content Reflectometers 6.4.2.2 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 6.4.2.3 Terminal Tab The Terminal tab may be used to send serial commands directly to the CS650. See TA

CS650 and CS655 Water Content Reflectometers TABLE 6-3. CS650 Terminal Commands Command Values Returned Units 0 1) Volumetric Water Content, θ 2)

CS650 and CS655 Water Content Reflectometers TABLE 6-4. CS650 SDI-12 Commands SDI-12 command (“a” is the sensor address) Values Returned Units a

CS650 and CS655 Water Content Reflectometers The proper sequence in the datalogger program for measuring CS650 probes on a multiplexer is: 1. Set RES

CS650 and CS655 Water Content Reflectometers 6.6.2 CR1000 With 2 CS650 Probes on Same Control Port This CRBasic example program measures two CS650 pr

CS650 and CS655 Water Content Reflectometers TABLE 6-7. Wiring For Program Example 3 CR1000 AM16/32B (2x32 mode) CS650 12V 12V G GND C2 RES

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

CS650 and CS655 Water Content Reflectometers TABLE 6-8. Wiring For Program Example 4 CR10X CS650 12V Red C1 Green G Black, Orange, Clear Code Ex

CS650 and CS655 Water Content Reflectometers TABLE 6-9. Wiring For Program Example 5 CR10X CS650’s (wiring same for both) 12V Red C1 Green G Blac

CS650 and CS655 Water Content Reflectometers 6.6.6 CR200X With 3 CS650 Probes This CRBasic example program measures 3 CS650 probe on a CR200X every 1

CS650 and CS655 Water Content Reflectometers 7. The Water Content Reflectometer Method for Measuring Volumetric Water Content 7.1 Description of Me

CS650 and CS655 Water Content Reflectometers It is important to distinguish between soil bulk electrical conductivity and soil solution electrical con

CS650 and CS655 Water Content Reflectometers 7.4 Error Sources in Water Content Reflectometer Measurement 7.4.1 Probe-to-Probe Variability Error All

CS650 and CS655 Water Content Reflectometers 7.5.1 Accurate Soil Temperature Measurement The thermistor used for measuring soil temperature is locate

CS650 and CS655 Water Content Reflectometers A minimum of four data points are required for derivation of a 3rd degree polynomial. Data points should

CS650 and CS655 Water Content Reflectometers The container to hold the soil during calibration should be non-metal and large enough that the rods of t

CS650 and CS655 Water Content Reflectometers Gravimetric water content is calculated after the container mass is accounted for. θgwet drydrym mm=− For

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 A vertical face of soil can be formed with a shovel. If the CS650 is to be used within about 0.5 meters

CS650 and CS655 Water Content Reflectometers The volumetric water content is the product of the gravimetric water content and the bulk density θ θ ρv

CS650 and CS655 Water Content Reflectometers 10. Troubleshooting Symptom Possible Cause Solution All CS650 output values read 0 No SDI12Recorder in

CS650 and CS655 Water Content Reflectometers 11. References Ledieu, J., P. De Ridder, P. De Clerck, and S. Dautrebande. 1986. “A method of measuring

CS650 and CS655 Water Content Reflectometers 36

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

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

Appendix B. SDI-12 Sensor Support Change Address Command (aAb!) Sensor address is changed with command aAb!, where a is the current address and b is

Appendix B. SDI-12 Sensor Support Aborting a Measurement Command A measurement command (M!) is aborted when any other valid command is sent to the se

Table of Contents PDF viewers: These page numbers refer to the printed version of this document. Use the PDF reader bookmarks tab for links to spec

Appendix B. SDI-12 Sensor Support The following examples show how to use LoggerNet software to enter transparent mode and change the SDI-12 address o

Appendix B. SDI-12 Sensor Support address. To exit SDI-12 transparent mode select the Close Terminal button. B.2.3 CR1000 Datalogger Example 1. C

Appendix B. SDI-12 Sensor Support 6. To change the SDI-12 address, key in aAb!<enter> where a is the current address from the above step and b

Appendix B. SDI-12 Sensor Support FIGURE B-3. SDI-12 transparent mode on CR10X datalogger using control port 1 and changing SDI-12 address from 0 t

Appendix B. SDI-12 Sensor Support 8. To change the SDI-12 address, enter the command aAb!; where a is the current address from the above step and b

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Table of Contents 7.2 The Topp Equation ... 25 7.3 Electrical Conductivity

Table of Contents Tables 6-1. CS650 Wiring Code for SDI-12 ... 8 6-2. CS650 Wiring Code for

Table of Contents iv

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