Campbell-scientific CDM-VW300 Series Dynamic Vibrating-Wire Analyzer S Manuel d'utilisateur Page 116
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- Table des matières
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- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
Appendix G. CRBasic Program Library
Sample (2,Diag(),IEEE4)
EndTable
BeginProg
'100 Hz/10msec scan rate
Scan(10,msec,500,0)
CDM_VW300Dynamic(CPI_ADDR,Freq(),Diag()) 'Get dynamic readings
CallTable dynamic
If TimeIntoInterval (0,1,Sec) Then 'Process static data only once per second
CDM_VW300Static(CPI_ADDR,StaticFreq(),Therm(),DynStdDev()) 'Get static readings
CallTable static
EndIf
NextScan
EndProg
G.1.15 100 Hz Measurement Example — One CDM-VW305, Eight
Channels
'===100Hz-1Device8Ch_4-25-13.CR3===
'CR3000 datalogger
'CDM-VW305 vibrating-wire analyzer
'Program to read 100-Hz dynamic data from one CDM-VW305 analyzer measuring eight channels
'IMPORTANT -- Ensure that the CPI address coded on the following line matches the address
'reported for the attached analyzer in the DevConfig or DVWTool software.
Const CPI_ADDR = 1 '<<<<<<<<<<<<<<SET CPI ADDRESS HERE
Public Freq(8) 'dynamic frequencies
Public Diag(8) As Long 'diagnostic code
Public StaticFreq(8) 'Static (1Hz output) frequencies
Public Therm(8) 'Thermistor readings
'Standard Deviation of the dynamic readings that occurred during the latest one-second interval
Public DynStdDev(8)
'The following arrays are used to configure the CDM-VW300 series device. Refer to the
'CDM_VW300Config instruction used below.
'
' CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8
' --- --- --- --- --- --- --- ---
'Set to true (Enabled=1, Disabled=0) only those channels which have sensors connected.
Dim Enable(8) As Long = { 1, 1, 1, 1, 1, 1, 1, 1}
'Specify the target/desired resonant amplitude at which the sensor will be maintained
'via excitation, given in volts. This should be in the range 0.010 to 0.001.
Dim Max_AMP(8) = { 0.002, 0.002, 0.002, 0.002, 0.002, 0.002, 0.002, 0.002}
'Low Frequency Boundary (sensor frequency should never fall below
'this value regardless of environmental changes).
Dim F_Low(8) = { 300, 300, 300, 300, 300, 300, 300, 300}
'High Frequency Boundary (sensor frequency should never exceed
'this value regardless of environmental changes).
Dim F_High(8) = { 6000, 6000, 6000, 6000, 6000, 6000, 6000, 6000}
'Output Format - Hz vs. Hz^2 :: Value of 0 – measured frequency is given in units of Hz,
'Value of 1 – measured frequency is squared and given in units of Hz^2
Dim OutForm(8) As Long = { 0, 0, 0, 0, 0, 0, 0, 0}
'Multiplier (factor) to be applied to sensor output frequency
Dim Mult(8) = { 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0}
'Offset (shift) to be applied to sensor output frequency
Dim Off(8) = { 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0}
'Steinhart-Hart coefficients [A,B,C] for converting thermistor ohms to
'temperature in Celsius. Specifying zeroes for A,B,C results in a reading in Ohms.
Dim SteinA(8) = { 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0}
Dim SteinB(8) = { 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0}
Dim SteinC(8) = { 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0}
'Rainflow configuration (not used in this program, but required as configuration arguments)
Dim RFMB(8) As Long = { 20, 20, 20, 20, 20, 20, 20, 20}
Dim RFAB(8) As Long = { 20, 20, 20, 20, 20, 20, 20, 20}
Dim RFLL(8) = { 400.0, 400.0, 400.0, 400.0, 400.0, 400.0, 400.0, 400.0}
G-24
- CDM-VW300 Series 1
- Dynamic Vibrating-Wire 1
- Analyzers 1
- Warranty 3
- Assistance 4
- Table of Contents 5
- Figures 8
- Wire Analyzers 11
- 2. Cautionary Statements 12
- 3. Initial Inspection 12
- 4. Overview 13
- 4.2 Measurement Rates 14
- 4.4 Laboratory Mode 15
- 4.5 Field Mode 15
- 4.6 Data Uses 16
- 5. Specifications 17
- 5.2 Specifications 18
- 6. Installation 20
- 6.2 Field-Mode Installation 28
- Offset 29
- CDM_VW300Config() 34
- CDM_VW300Dynamic() 34
- CDM_VW300Static() 34
- 7. System Operation 36
- 7.1.2 Using DVWTool 37
- fields 38
- 7.1.3 Using DevConfig 39
- 7.2 Using the Datalogger 40
- 7.4 Using Power Supplies 41
- 7.5.1 Device Name 44
- 7.5.2 CPI Bus Speed 44
- ) allow 46
- 7.6 Sensor Selection 47
- 7.7 System Connections 47
- Shield / Sensor Ground 48
- Vibrating-Wire Sensor 48
- 7.8 Operating System 56
- 7.9 Power-Up Sequence 56
- 7.10 CRBasic Programming 57
- RF7, RF8) 58
- CPISpeed(BitRate) 58
- 7.11 System Adjustments 59
- 7.12 System Validation 59
- 8. Troubleshooting 63
- 8.4 Filtering Harmonics 64
- 8.5 Diagnostic Outputs 64
- (DiagCode AND 256) 67
- (DiagCode AND 512) 68
- (DiagCode AND 1024) 68
- (DiagCode AND 2048) 68
- 8.6 Factory Default Reset 69
- 9. Glossary 70
- Interface 75
- B.4 Specifications 77
- C.1.1 Power 79
- C.1.2 Interconnect Cable 79
- C.2 Distributed Architecture 81
- Thermistor 84
- 52611099 87
- F.2 Accuracy and Resolution 89
- G.1 Dynamic Measurements 93
- Channels 100
- output frequency 102
- Channels, Rainflow Histogram 104
- reading to obtain 109
- G.2 Static Measurements 117
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