Dynalyzer – High Voltage Unit
OPERATION MANUAL
1
Contents
Preface .................................................................................................................................................................. 3
Safety Notice ..................................................................................................................................................... 3
Introduction .......................................................................................................................................................... 4
General .............................................................................................................................................................. 4
Basic Principle of Operation .............................................................................................................................. 4
Anode Current Sensor .................................................................................................................................. 4
High-Voltage Divider ..................................................................................................................................... 4
Filament Current ........................................................................................................................................... 5
Equipment Supplied .......................................................................................................................................... 5
Specifications .................................................................................................................................................... 5
Installation ............................................................................................................................................................ 9
Inspection .......................................................................................................................................................... 9
Parts Necessary for Use ................................................................................................................................... 9
Electrical Connections ....................................................................................................................................... 9
Precautions ................................................................................................................................................... 9
High Voltage Cable Connections ................................................................................................................ 10
Operation ............................................................................................................................................................ 15
Readout Oscilloscope ..................................................................................................................................... 15
Measurement procedure for kVp and Exposure Time Using Oscilloscope ................................................ 15
Measurement Procedures for mA and mAs using Oscilloscope ................................................................ 16
Three-Phase Current Measurements (using Oscilloscope) ........................................................................ 16
Fluoroscopic Current Measurements (using Oscilloscope) ........................................................................ 17
Measurements with Accu-Dyn+ system (see appendix A) .............................................................................. 17
Measurements with Digital Display ................................................................................................................. 17
Current Measurements with Dynalyzer III Digital Display (mA and mAs) ................................................... 18
Exposure Duration (Time) ........................................................................................................................... 18
Dynalyzer Digital Display of kVp Measurements ........................................................................................ 18
Filament Current Measurement with the Dynalyzer Digital Display ............................................................ 18
Measurements with Suitable RMS Voltmeter .................................................................................................. 18
Removing High Voltage Unit from X-ray Installation ....................................................................................... 19
Interpreting Oscilloscope Measurement Waveforms ...................................................................................... 19
Single-Phase Current Waveform ................................................................................................................ 19
Three-Phase Current Waveforms ............................................................................................................... 20
kVp Calibration for X-Ray Generator .......................................................................................................... 21
Equipment Fault Diagnosis by Voltage Waveform Analysis ....................................................................... 21
Evaluating Fluoroscopic Current Measurements ........................................................................................ 22
Single-Phase Radiographic Current Measurements using Oscilloscope ................................................... 23
Filament Current Measurements using Oscilloscope ................................................................................. 25
Fuse Replacement .......................................................................................................................................... 27
Maintenance ....................................................................................................................................................... 27
System Pressure ............................................................................................................................................. 28
Failure Modes .................................................................................................................................................. 28
Appendix A ......................................................................................................................................................... 29
Accu-Dyn+ Display System ............................................................................................................................. 29
Overview: .................................................................................................................................................... 29
Installation: .................................................................................................................................................. 29
Running the Program .................................................................................................................................. 30
Data ............................................................................................................................................................. 31
Hotkeys ....................................................................................................................................................... 31
Common Error Messages: .......................................................................................................................... 31
Appendix B - Warranties and Disclosures ...................................................................................................... 33
