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MultiScan MS 5800
Инструкция Страница: 8

Olympus MultiScan MS 5800 Инструкция онлайн [8/160] 528325

DMTA053-01EN, Rev. D, July 2017

Labels and Symbols2

To avoid the risk of electric shock, do not touch the inner conductor of the BNC (or

LEMO) connectors. Up to 300 V can be present on the inner conductor. The warning

symbol near the connectors warns of this electric shock risk.

CAUTION

Warning symbol

Содержание

Dmta053 01en rev d july 2017 1
Multiscan ms5800 1
User s manual 1
Important information please read before use 3 3
Instrument overview 19 3
Introduction 15 3
Labels and symbols 1 3
Ms5800 features 17 3
Table of contents 3
Instrument installation 27 4
Operation overview 33 4
Theory of operation electromagnetic techniques 41 4
Maintenance and troubleshooting 89 5
Specifications 95 5
Technical references 105 5
Theory of operation encoder inputs 85 5
Theory of operation ultrasound techniques 69 5
Failure messages 135 6
Index 145 6
List of figures 141 6
List of tables 143 6
Labels and symbols 7
Important information please read before use 9
Instruction manual 9
Intended use 9
Instrument compatibility 10
Repair and modification 10
Presence of visual interferences or phantom spots 11
Safety signal words 11
Safety symbols 11
Note signal words 12
General warnings 13
Safety 13
Warnings 13
Electrical warnings 14
Equipment disposal 14
Electrostatic discharge precautions 15
China rohs 16
Weee directive 16
Emc directive compliance 17
Important information please read before use 11 17
Korea communications commission kcc 17
This equipment generates and uses radio frequency energy and if not installed and used properly that is in strict accordance with the manufacturer s instructions may cause interference the ms5800 has been tested and found to comply with the limits for an industrial device in accordance with the specifications of the emc directive 17
中国 rohs 标识是根据电器电子产品有害物质限制使用管理办法以及电子电气产品有害物质限制使用标识要求的规定适用于在中国销售的电气电子产品上的电气电子产品有害物质限制使用标识 17
注意电气电子产品有害物质限制使用标识内的数字为在正常的使用条件下有害物质不会泄漏的年限不是保证产品功能性的年限 17
이 기기는 업무용 환경에서 사용할 목적으로 적합성평가를 받은 기기로서 가정용 환 경에서 사용하는 경우 전파간섭의 우려가 있습니다 17
Fcc usa compliance 18
Ices 001 canada compliance 18
Warranty information 18
Technical support 19
Introduction 21
Ms 5800 features 23
Ms5800 features 23
Chapter 1 18 24
Eddy current 24
Figure 1 1 ms5800 ndt applications 24
Multiscan ms 5800 24
Remote field flux leakage 24
This manual describes the utilization of the ms5800 without external synchronization if the system is synchronized by another computer functioning details will be determined by the specific synchronization mode 24
Ultrasound 24
Instrument overview 25
Possible configurations of the ms 5800 25
Possible configurations of the ms5800 25
Front panel 26
Permanent elements 27
Elements associated with the ect option 29
Elements associated with the rft mfl option 29
Elements associated with the ut option 29
Ms 5800 packaging 30
Ms5800 packaging 30
Carrying handle 31
Instrument installation 33
Standard equipment and options 33
Installation procedure 34
To install the ms5800 34
Connection procedure 35
To connect the ms5800 35
Starting multiview 36
To start up multiview 37
Ms 5800 environment 39
Ms5800 environment 39
Operation overview 39
Control and analysis station 40
Ms5800 40
Drive unit 41
Fast ethernet link 41
Ms 5800 functions 41
Ms5800 functions 41
Circuit description 42
Electromagnetic acquisition board 42
Electromagnetic acquisition unit 42
Electromagnetic generator board 42
Current source control 43
Injectors ec1 ec2 rf1 and rf2 43
Probe interface module pim board 43
Ultrasound acquisition unit 43
Acquisition and processing board 44
Pulser receiver board 44
Interconnection board 45
Mim hub board 45
Acquisition triggered by an external clock signal 47
Acquisition triggered by an internal clock signal 47
Acquisition triggering modes 47
Theory of operation electromagnetic techniques 47
Continuous mode 48
Excitation modes 48
Frequency multiplexing mode 49
Super multiplexed mode 51
Comparative summary of excitation modes 52
Multigenerator operation 53
Reference coil elimination 54
Increasing probe spatial resolution 56
Excitation of differential probes 59
A wiring diagram of the differential probe 60
Absolute measures 60
B erroneous eddy current signal obtained with a subtractive flux differential probe 60
Chapter 5 54 60
Differential measures 60
Differential probe 60
Dmta053 01en rev d july 2017 60
Figure 5 10 conventional excitation of a differential probe 60
A wiring diagram of the differential probe 61
Absolute measures 61
B eddy current signal obtained with a subtractive flux differential probe 61
Differential measures 61
Differential probe 61
Dmta053 01en rev d july 2017 61
Figure 5 11 excitation of a subtractive flux probe with two inverted signals 61
Fortunately the ms5800 overcomes this problem by using two injectors that provide inverted signals out of phase by 180 to produce additive flux in differential probes figure 5 11 a shows the wiring diagram used and figure 5 11 b the eddy current signal obtained in absolute mode under the conditions previously described 61
Theory of operation electromagnetic techniques 55 61
Probe overexcitation 62
Optimization of signal to noise ratio 63
Excitation amplitude and amplification gain setting 64
To adjust excitation amplitudes and amplification circuit gains 64
Electronic probe balancing 65
To perform probe balancing 65
Digital filters 66
To quickly estimate signal bandwidth at the probe amplifier output 67
Time interpolation of eddy current signals 68
A sampled channels not shifted b shifted sampled channels 69
Dmta053 01en rev d july 2017 69
Figure 5 16 residual signal obtained when combining eddy current channels 69
Figure 5 17 a shows the eddy current signal of a defect obtained when combining two channels that were sampled simultaneously figure 5 17 b shows this signal when the two combined channels were sampled successively with a sampling delay of 1 ms between channels in this case the distortion of the eddy current signal is obvious 69
Theory of operation electromagnetic techniques 63 69
A sampled channels not shifted b shifted sampled channels 70
Chapter 5 64 70
Dmta053 01en rev d july 2017 70
Figure 5 17 signal obtained when combining eddy current channels 70
Figure 5 18 a shows a residual parasitic signal obtained when combining two simultaneously sampled acquisition channels 70
In context switching mode there is no delay between the sampling of signals generated within the same time slot because they are sampled simultaneously however a delay elapses between the sampling of two successive time slots 70
The ms5800 is provided with an interpolation function that estimates the eddy current channel voltages that would have been measured if the channels had been sampled simultaneously this function estimates the eddy current signal voltage at a given instant using voltages measured at sampling points immediately preceding and following the interpolated point the interpolation is linear and uses two known values 70
A without delay b with a 1 ms delay c with interpolation 71
Dmta053 01en rev d july 2017 71
Figure 5 18 b shows this signal when two combined channels were sampled successively with a sampling delay of 1 ms between channels the residual signal is greater because sampled signals are time shifted figure 5 18 c shows the attenuation effect of interpolation on the residual signal level 71
Figure 5 18 effect of interpolation on a parasitic residual signal 71
Figure 5 19 a shows examples of eddy current signal obtained when combining two simultaneously sampled acquisition channels 71
Figure 5 19 effect of interpolation on an eddy current signal 71
Theory of operation electromagnetic techniques 65 71
Continuous mode 72
Selection of frequencies 72
Super multiplexed mode 73
Theory of operation ultrasound techniques 75
Channel 76
Chapter 6 70 76
Description of the acquisition chain 76
Dmta053 01en rev d july 2017 76
Figure 6 1 rf chain on an ms5800 76
P r board 76
This section provides a description of the acquisition chain 76
Analog signal rf 78
Bits ascan 78
Chapter 6 72 78
Dmta053 01en rev d july 2017 78
Figure 6 2 digital processing 78
Next the analog signal goes through the 12 bit digitizer at 100 mhz 78
Once the digitizing completed the signal is processed by the field programmable gate array fpga figure 6 2 shows the principal processes 78
A scan 79
A scan video 79
Description of the ms 5800 ultrasound data 79
Description of the ms5800 ultrasound data 79
Synchronization modes 79
Multipeak 80
Remanence 80
C scan 82
Averaging 83
Digital smoothing 83
Real time processing 83
Rectification 83
Compression by n 85
Acquisition rate information 87
Acquisition rate 88
Context length 88
A cycle of data is produced after a pace signal the pace signal can be produced 89
Acquisition time 20 µs 2000 samples with 100 mhz 1000 samples with 50 mhz 500 samples with 25 mhz 89
As this formula shows to obtain maximum speed performances it is better to use a digitizing frequency of 50 mhz even if it means compressing the data by n afterward 89
Averaging 4 89
Connector 89
In multiview software the context length is indicated in the recurrence text box context length 1 recurrence 89
Input and output data 89
On encoder 89
On the external clock in this case the signal comes from the pace pin of the 89
On the internal clock timer 89
Table 6 example of context length calculation 89
The embedded software of the ms5800 calculates the context length the formula shown earlier indicates the minimum time but the user can increase this period for example in order to avoid phantom echoes when there are many contexts the next context is not fired as long as the time of the previous context has not expired 89
Theory of operation ultrasound techniques 83 89
Digital position encoders 91
Theory of operation encoder inputs 91
Chapter 7 86 92
Clk dir counter 92
Counter output value 92
Dmta053 01en rev d july 2017 92
Figure 7 1 quadrature counter timing diagram 92
This type of counter is used with position encoders providing clock and direction signals or clock signal only the counter is clocked by each positive transition of the clock signal the counting direction is controlled by the logic level of the direction signal as shown in figure 7 2 when this signal logic level is low the counter counts up when the logic level is high the counter counts down if the encoder provides a clock signal only the counting direction may be software controlled through the setup dialog box in this case the counter may be configured into a clk up or a clk down counter the counter output data is stored in memory with a 32 bit format 92
Dmta053 01en rev d july 2017 93
Figure 7 2 clk dir counter timing diagram 93
Theory of operation encoder inputs 87 93
Maintenance and troubleshooting 95
Preventive maintenance 95
Instrument cleaning 96
Maintenance of the fan filter 96
To clean the instrument 96
To change the fan filter 97
To clean the fan filter 97
Troubleshooting 98
Changing the fuse 99
To change the fuse 99
Environmental conditions 101
General specifications 101
Power requirements 101
Specifications 101
System 101
Encoder specifications 102
Encoders 102
Ethernet cable 102
Housing 102
Alarms 103
Auxiliary inputs 103
Auxiliary outputs 103
Acquisition channels 104
Coil drive signals 104
Eddy current option ect 104
Electromagnetic board options 104
Acquisition channels 105
Coil drive signals 105
Remote field option rft 105
Acquisition channels 106
Magnetic flux leakage option mfl 106
Pulser 107
Ultrasound option ut 107
Digitizer 108
Receiver 108
Data type 109
Signal to noise ratio full scale 109
General connectors 111
Technical references 111
Connectors 112
Etherne 112
Ethernet 1 and ethernet 2 connectors 112
Precautions to be taken with the ethernet cable 113
Connector 114
I o connector 114
5 v supply voltage polyswitch 0 a 115
Connector 115
Connector parameters and specifications continued 115
Dmta053 01en rev d july 2017 115
Encoder inputs 115
Figure 10 3 the 115
Maximum frequency 250 khz 115
Maximum voltage 24 v 115
Parameters specifications 115
Table 11 115
Technical references 109 115
Alarm connector 118
Connector 118
Analog 120
Analog x1 and analog y1 connectors 120
Connectors 120
Connectors specific to the electromagnetic acquisition board 120
Connector 122
Connectors specific to the ect option 122
Ect extended connector 122
A b c d e f g h j 124
Chapter 10 118 124
Connector 124
Dmta053 01en rev d july 2017 124
Ect extende 124
Figure 10 6 the 124
M n p r s 124
Connector 127
Ect main connector 127
Connector 129
Ect ref connector 129
Connector 131
Connectors specific to the rft and mfl option 131
Rft connector 131
Connector 134
Mfl connector 134
Connector 136
Mux connector 136
Connectors 138
Connectors specific to the ut board 138
P and r connectors 138
Failure messages 141
Format of the failure messages 141
Introduction 141
Warning messages 142
Error messages 144
Fatal error messages 145
List of figures 147
List of tables 149
Index 145 151
Index 146 152
Index 147 153
Index 148 154
Index 149 155
Index 150 156
Index 151 157
Index 152 158
Index 153 159
Index 154 160

Olympus MultiScan MS 5800 Инструкция онлайн [8/160] 528325

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