Campbell CDM-VW300 Series Manual

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers Revision: 10/13 Copyright © 2013Campbell Scientific, Inc.

Table of Contents vi 7-1. Summary of CDM-VW300 Configuration Settings ... 33 7-2. Relationship of Sample Rate and Sensor Freq

Appendix G. CRBasic Program Library CDM_VW300Dynamic(CPI_ADDR5,Freq5(),Diag5()) CDM_VW300Dynamic(CPI_ADDR6,Freq6(),Diag6())

Appendix G. CRBasic Program Library Dim RFHY(2) = { 0.005, 0.005} Dim RFOF(2) As Long = { 100, 100} 'Configure the

Appendix G. CRBasic Program Library 'via excitation, given in volts. This should be in the range 0.010 to 0.001 Dim Max_AMP(8) = {

Appendix G. CRBasic Program Library G.1.7 50 Hz Measurement Example — Three CDM-VW305s, 24 Channels '===50Hz-3Devices8Ch_4-25-13.CR3=== 'C

Appendix G. CRBasic Program Library CDM_VW300Config(1,CPI_ADDR3,0,Enable3(),Max_AMP3(),F_Low3(),F_High3(), _ OutForm3(),Mult3(),Off3(), SteinA3(),Ste

Appendix G. CRBasic Program Library Dim Enable(2) As Long = { 1, 1} Dim Max_AMP(2) = { 0.002, 0.002} Dim F_Low(2) =

Appendix G. CRBasic Program Library G.1.9 50 Hz Measurement Example — One CDM-VW305, Eight Channels, Rainflow Histogram '===RFH-50HzExample8Ch_

Appendix G. CRBasic Program Library DataTable (dynamic,true,-1) Sample (8,Freq(),IEEE4) Sample (8,Diag(),IEEE4) EndTable 'Store Rainflow

Appendix G. CRBasic Program Library Public Temp(2) : Units Temp() = DegC ' Temperature in DegC Public TempBL(2) : Units TempBL() = DegC ' T

Appendix G. CRBasic Program Library 'Now shift the given Strain using the Baseline/Offset value Strain(1) = Strain(1) + StrainBL(1) : S

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers Configuring a dynamic vibrating-wire measurement system requires an integrated system-wide approach

Appendix G. CRBasic Program Library Public DCode(2) As Long 'Dynamic diagnostic code Public StaticStrain(2) : Units StaticStrain() = Microstra

Appendix G. CRBasic Program Library 'Calculate static digits reading (for troubleshooting) StaticDigits(1) = StaticStrain(1)/GageFactor/

Appendix G. CRBasic Program Library Dim OutForm(2) As Long = { 1, 1} 'Use a multiplier of 0.001 to divide by 1000 and get digits &

Appendix G. CRBasic Program Library G.1.13 50 Hz Measurement Example — One CDM-VW300, Two Geokon 4000 Sensors with FieldCal() and TableFile() to CF &

Appendix G. CRBasic Program Library DataInterval (0,1,Min,10) 'Using TableFile, write the 1 minute averages out each '15 minutes to

Appendix G. CRBasic Program Library G.1.14 100 Hz Measurement Example — One CDM-VW300, Two Channels '===100Hz-1Device2Ch_3-25-13.CR3=== 'CR

Appendix G. CRBasic Program Library Sample (2,Diag(),IEEE4) EndTable BeginProg '100 Hz/10msec scan rate Scan(10,msec,500,0) CD

Appendix G. CRBasic Program Library Dim RFHL(8) = {4000.0,4000.0,4000.0,4000.0,4000.0,4000.0,4000.0,4000.0} Dim RFHY(8) =

Appendix G. CRBasic Program Library Dim SteinA(2) = { 0.0, 0.0} Dim SteinB(2) = { 0.0, 0.0} Dim SteinC(2) =

Appendix G. CRBasic Program Library CDM_VW300Config(1,CPI_ADDR,0,Enable(),Max_AMP(),F_Low(),F_High(), _ OutForm(),Mult(),Off(), SteinA(),SteinB(),Ste

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers See TABLE 5-1, CDM / Datalogger Compatibility, in Section 5, Specifications, for datalogger compatib

Appendix G. CRBasic Program Library G-28

Campbell Scientific Companies Campbell Scientific, Inc. (CSI) 815 West 1800 North Logan, Utah 84321 UNITED STATES www.campbellsci.com • info@campbel

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers 4. Overview Single-coil vibrating-wire sensors are preferred in many applications because they are

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers FIGURE 4-2. Eight-channel CDM-VW305 wiring panel 4.2 Measurement Rates CDM-VW300 analyzers use pa

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers Vibrating Wire ThermistorStainless Steel Housing4-Conductor CableFilter Plucking and Pickup

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers Vibrating-WireSensorsCDM-VW300PCLoggerNetCR3000DataloggerSC-CPI FIGURE 4-6. Field-mode data-acquisi

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers 4.6.4 Rainflow Histograms Rainflow histograms are 3-D representations of the rainflow counting algo

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers 5.2 Specifications Electrical specifications are valid from –25 to 50 °C unless otherwise specified

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers Sensor resonant frequency range: TABLE 5-2. CDM-VW300/305 Sensor Resonant Frequency Range (Hz) S

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers Operating temperature Standard: –25° to 50°C Extended: –55° to 85°C Power requirement Voltage: 9.

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers difficult to resolve. Data-acquisition systems, from the sensors to the telecommunications equipmen

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers 6.1.2 Laboratory-Mode Installation Procedure .1.2 Laboratory-Mode Installation Procedure The follo

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers FIGURE 6-3. USB receptacle on CDM-VW300 and Type-Micro-B connector of USB cable With the driver

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers If COM port CDM-VW300 does not appear, there is a problem with the installation of the device driver

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers 5. Check the operating system version of the CDM-VW300. Reference Section 7.8, Operating System.

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers FIGURE 6-4. Sensor connection on a CDM-VW305 CoilCoilGroundVWVWTT1CDM-VW300 FIGURE 6-5. Three-wir

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers 8. Reconnect 12 Vdc power to the CDM-VW300. 9. Confirm sensor operation. Reference Section 7.12.1

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers are shaded red), consult Section 7.12.2.1, Monitoring with DVWTool Software, for troubleshooting hel

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers Procedure: 1. Install DVWTool before connecting the SC-CPI or CDM-VW300 to the PC. Reference Secti

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

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers Rainflow | Number of Amp Bins RF_AmpBins Rainflow | Low Limit RF_LowLim Rainflow | High Limit RF_H

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers SC-CPI to Datalogger12V to 12V G to G C1 to C1 C2 to C2 C3 to C3 SC-CPI to CDM-VW300CPI to CPI (RJ-4

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers Use the RJ45 CPI cable between the CPI ports of the CDM-VW300 and the SC-CPI interface. Use the yel

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers 7. As shown in FIGURE 6-12, connect power leads to the CDM-VW300. Do not turn power on until the s

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers FIGURE 6-13. Earth ground connections 9. Write or obtain a CRBasic program for the datalogger. R

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers The following figure points out essential elements of the CRBasic program for a datalogger control

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers A clean display of data, as shown in the previous figure, is obtained by deactivating all but chann

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers 1. Install either DVWTool 1.0 or later or DevConfig 2.04 or later. 2. Connect the device to the com

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers FIGURE 7-1. DVWTool Settings Editor and Data Display If CDM-VW300 does not appear in the availab

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers Standard Deviation of Dynamic Frequency (Hz or Hz2) is the standard deviation of the Dynamic Frequen

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

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers FIGURE 7-2. DevConfig Settings Editor Details about using DevConfig can be found in DevConfig Help

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers Write or obtain a CRBasic program for the datalogger. Reference Section 7.10, CRBasic Programming.

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers 7.4.2 Data-Acquisition System Power Power supply requirements will vary depending on system configu

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers If using software to configure the analyzer, which is recommended, physically connect the CDM-VW300

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers Setting Description DVWTool PC Software Setting Name DevConfig PC Software Setting Name CRBasic Dat

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers 7.5.3 Operating System Version This field reports the version of the CDM-VW300 operating system. T

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers 7.5.11 Channels Enabled Each channel on a CDM-VW300 series analyzer can be individually enabled for

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers Options: • 0 = reset histogram each output / 1 = Do not reset histogram. • 0 = Divide bins by tota

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers 7.7.1 CDM-VW300 to PC Connection A PC to CDM-VW300 USB connection is used in a laboratory-mode inst

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers vibrating-wire sensors operate equally well with either polarity position of the two signal wires.

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

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers FIGURE 7-8. Five-wire vibrating-wire sensor connection Since temperature is a factor that can infl

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers FIGURE 7-9. SC-CPI and CDM-VW300 CPI ports with RJ45 cable marked with yellow tape Place a termin

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers FIGURE 7-11. Multiple analyzers on a CPI bus SC-CPI interface Daisy-chainedCPI cables Daisy-cha

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers FIGURE 7-12. Installing 12 Vdc transformer on the CDM-VW300 In field-mode installations, power is

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers 7.7.5 Earth Ground Connections Earth grounding provides protection from static discharge, transient

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers FIGURE 7-15. CR3000 and SC-CPI connections SC-CPI module connects to terminals C1, C2, C3 (not SDM

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers • These dataloggers get into a state wherein they measure and store so intensely that little time r

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers 7.10 CRBasic Programming 7.10.1 Writing Programs In field-mode installations, the system datalogge

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers CDM_VW300Static() captures static readings such as thermistor, static frequency, and standard deviat

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers 7.11 System Adjustments 7.11.1 Frequency Range Assuming a reasonable level of certainty about the

Table of Contents 7.2 Using the Datalogger... 30 7.3 Using the SC-CPI Interfac

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers FIGURE 7-16. LoggerNet connect screens showing frequencies from CDM-VW300 50

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers FIGURE 7-17. RTDAQ screens showing frequencies in Public table If proper frequencies are showing

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers 7.12.2.17.12.2.1.1 Monitoring with DVWTool Software The Dynamic Vibrating-Wire Tool Box (DVWTool) i

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers 8. Troubleshooting CDM-VW300 series analyzers are designed to give years of trouble-free service wi

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers that those readings are correct and can be viewed with RTDAQ or LoggerNet. 4. If temperature and ba

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers one diagnostic code for each measurement. In total, 800 diagnostic codes are received each second.

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers and the Maximum Frequency (Hz) entered in DVWTool. The CDM_VW300Config() instruction equivalent to

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers 8.5.1.3 Using Diagnostic Parameters Although a frequency reading may be provided when an amplitude

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers LowAmpWarning = (DiagCode AND 256) where LowAmpWarning is assigned a Boolean data type. High-Amplitu

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers 512 – 767 (200 – 2FF Hex) True 1024 – 1279 (400 – 4FF Hex) True 1280 – 1535 (500 – 5FF Hex) T

Table of Contents 8.5.1 Diagnostic Codes (Dynamic) ...54 8.5.1.1 Description of Diagnostic Parame

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers 2. To reset the product to factory defaults, i. From the list at the left of the main DevConfig w

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers Microsoft and Windows are either registered trademarks or trademarks of Microsoft Corporation in the

CDM-VW300 Series Dynamic Vibrating-Wire Analyzers 62

Appendix A. Measurement Theory A.1 Dynamic Vibrating-Wire Measurements The key components of standard, single-coil vibrating-wire sensors are 1) a

Appendix A. Measurement Theory FrequencyMeasurementWire ResponseExcitationMirroredOscillatorDatalogger Sample Period FIGURE A-1. Timing of dynamic v

Appendix B. SC-CPI Datalogger to CPI Interface B.1 Introduction The SC-CPI is designed to interface the CR3000, CR1000, and CR800 dataloggers to a n

Appendix B. SC-CPI Datalogger to CPI Interface lug to a suitable ground should be made. Cabling between the datalogger and the SC-CPI should be as s

Appendix B. SC-CPI Datalogger to CPI Interface B.4 Specifications Compatibility Dataloggers: CR800 Series CR1000 CR3000 Operating temperature: –25°

Appendix B. SC-CPI Datalogger to CPI Interface B-4

Appendix C. CDM Devices and CPI Bus Campbell Scientific is introducing the CDM (Campbell Distributed Module) line of peripherals, starting with the

Table of Contents F. Thermistor Information... F-1 F.1 Converting Resistance to Temperature...

Appendix C. CDM Devices and CPI Bus FIGURE C-1. CPI pin assignments C.1.3 Speed as a Function of Distance TABLE C-1. Maximum Potential Speed as a

Appendix C. CDM Devices and CPI Bus C.1.4 CPI Grounding To keep the common mode of the signals in range, a common reference (ground) connection is ad

Appendix C. CDM Devices and CPI Bus CR3000 DataloggerSC-CPICDM Device #1CDM Device #2CDM Device #3Long Cable LengthsCPICPICPI FIGURE C-2. Long cable

Appendix D. Digits Conversion Vibrating-wire sensors are typically supplied with a calibration report from the manufacturer. Use the calibration da

Appendix D. Digits Conversion FIGURE D-1. Geokon Calibration Report of a Sensor without a Thermistor D-2

Appendix E. Calculating Measurement Error When using a CDM-VW300 analyzer, the basic output of a measurement is frequency (Hz) or frequency squared

Appendix E. Calculating Measurement Error where N is the noise value given in TABLE 5-3, CDM-VW300/305 Effective Frequency Measurement Resolution, co

Appendix E. Calculating Measurement Error or s = GfN / 500 E.5 Example Error Calculation: DGSI Piezometer 52611099 For Durham Geo Slope Indicator p

Appendix E. Calculating Measurement Error E-4

Appendix F. Thermistor Information F.1 Converting Resistance to Temperature The CDM-VW300 outputs a resistance value for sensors that contain a the

Table of Contents 6-1. Laboratory-mode measurement system...11 6-2. 12 Vdc power connection on the CDM-VW

Appendix F. Thermistor Information 3. Steinhart-Hart equation error 4. Precision of the bridge resistors 5. Accuracy of the datalogger voltage measur

Appendix F. Thermistor Information ERROR = (ACTUAL - COMPUTED) DEG CCOMPUTED TEMPERATURE (C) 1000 FOOT LEAD-10 -5 0 5 10 15 20 25 300.32.0.300.280.26

Appendix F. Thermistor Information ERROR = (ACTUAL - COMPUTED) DEG CCOMPUTED TEMPERATURE (C) 5000 FOOT LEAD-10 -5 0 5 10 15 20 25 301.61.51.41.31.21.

Appendix G. CRBasic Program Library The following example programs are compatible with CR3000, CR1000, and CR800 dataloggers without modification.

Appendix G. CRBasic Program Library 'Offset (shift) to be applied to sensor output frequency Dim Off(2) = { 0.0, 0.0} &apos

Appendix G. CRBasic Program Library 'Standard Deviation of the dynamic readings that occurred during the latest one-second interval Public DynSt

Appendix G. CRBasic Program Library G.1.3 20 Hz Measurement Example — Three CDM-VW305s, 24 Channels '===20Hz-3Devices8Ch_3-25-13.CR3=== 'C

Appendix G. CRBasic Program Library CDM_VW300Config(1,CPI_ADDR3,0,Enable3(),Max_AMP3(),F_Low3(),F_High3(), _ OutForm3(),Mult3(),Off3(), SteinA3(),Ste

Appendix G. CRBasic Program Library Public DynStdDev1(8), DynStdDev2(8), DynStdDev3(8) 'Dynamic standard deviations Public DynStdDev4(8), DynStd

Appendix G. CRBasic Program Library 'Shared rainflow configuration (not used, but required as configuration arguments) Dim RFMB(8) As Long =