OmniScan MX2 Training ProgramEncoded Inspection Preparation MX2 Training Program – Encoded Inspection - Overview Encoders and scanners come in all shapes and sizes and are typically purchased based on the application requirements for geometry, precision, durability and speed. Encoders and scanners allow the position and orientation of the probe in one or two axis to be recorded with the MX2 phased array data allowing 2D data views such as a B-scan and C-scan. Encoded scanners can be as simple as a small wheel connected to the probe or a complex multi probe scanner with multi axis capability controlled from a computer or PLC. 2 the encoder connector specifications are available in the users manual allowing the MX2 to be integrated with any scanner to a patch cable using a standard 15 pin serial connector.MX2 Training Program – Encoded Inspection – Overview cont. 3 . Additionally. scanners can be found in the Olympus Industrial Scanners and Accessories Catalog. A full range of application and market specific encoders. 2 of the MX2 User manual.MX2 Training Program – Encoded Inspection – Overview cont. 4 . The complete connector specifications and wiring pin-out can be found in section 14. The encoder input receptacle of the MX2 is on the top panel and uses a short IP66 water resistant patch cable (Included with MX2) to interface with a standard 15 pin serial connector common to Olympus and many third party suppliers of encoders and scanners. and all required calibrations completed.MX2 Training Program – Encoded Inspection – Scan Menu Overview The scan menu is where encoders. 5 . These parameters are typically configured last after the group has been created with the wizards. the UT settings have been configured. scanners and their associated parameters are configured for the inspection. (MX2 Default) Available on either with either a clock or encoded inspection and is used when the probe is moved in one axis (Scan axis) along the component or weld. – Helicoidal scan.MX2 Training Program – Scan Menu – Inspection Type Overview Options for scan type are: – One line scan. n ax is Encoder input 6 S ca . (Pictured below) The probe is moved in one axis as a cylindrical shaped component is moved. The probe is moved in two axis (Scan and index axis) and acquired in a bi-directional or unidirectional pattern. The scan axis encoder monitors the continuous rotation around the cylinder and the index axis encoder monitors the continuous movement along the index axis. – Raster scan. Although a one line scan only requires a single encoder. Scan axis 7 .MX2 Training Program – Scan Menu – Inspection Type One Line Scan The one line scan can be used with either a time or encoder inspection. it could have been wired in the interface cable for either encoder 1 or 2. HSMT Flex (1 axis) HSMT X03 (1 axis) Chain Scanner (2 axis) WeldROVER (1 axis) HSMT Compact (1 axis) Cobra (1 axis) 8 . More examples of Olympus one line scanners. In the example below.MX2 Training Program – Scan Menu – Inspection Type Raster Scan In a raster scan either encoder 1 or 2 can be assigned to monitor the scan axis. encoder 1 is assigned to the scan axis (Wheels) and encoder 2 assigned to the index (Arm). Whichever encoder is selected as the scan axis. the other encoder is assumed to be the index axis. is Index ax 2 Encoder Scan aexris1 Encod 9 . The MX2 has two encoder inputs. then the operator repositions the probe for the next “Stroke” and presets the Cscan on the index axis by selecting the clicker button. This creates a bi-directional inspection (C-scan) where the operator must manually control the index axis. Type .Raster Scan cont. Index axis stroke 2 Index axis stroke 1 Scan axis 10 . the scan axis is assigned to encoder 1 (Wheel) and the index axis is assigned to encoder 2 (Clicker) The probe is moved along the scan axis. In the raster scan pictured below.MX2 Training Program – Scan Menu – Insp. It is an inspection type that requires both encoders to be configured. (Scan\encoder 1. The scan axis encoder monitors the continuous rotation around the cylinder and the index axis encoder monitors probe movement. index\encoder 2) 11 .MX2 Training Program – Scan Menu – Inspection Type Helicoidal In the helicoidal scan pictured below the probe is moved in one line as the cylindrical shaped component is rotated. It does not appear when set to time for one-line scans. When Scan>Inspection>Type is set to one line scan.MX2 Training Program – Scan Menu – Encoder Parameters Overview The encoder sub menu only appears when Scan>Inspection>Scan> is set to encoder 1 or encoder 2. only the encoder selected for the scan axis available for configuration. 12 . The encoder sub menu is where the encoder hardware parameters are entered and the position is preset. Configurations are available for both encoder 1 and 2 if a raster scan is selected in Scan>Inspection>Type>Raster. R ev er s .Polarity m l 0- 100 0m m -0m 000 13 Nor ma e1 The encoder polarity reverses the encoder counts so that the scan axis can be configured in the desired direction. the scan axis position is visible in the MX2 indication area of the display and the operator can reverse the position to match the scan axis direction on the component.MX2 Training Program – Scan Menu – Encoder Parameters . When manipulating the scanner. MX2 Training Program – Scan Menu – Encoder Parameters .Type The encoder type is a fixed parameter that describes the type of signal generated by the hardware for processing. 14 . The majority of encoders used in weld inspection are quadrature. The definition of each available type below can found in the MX2 user manual. 15 . etc. The distance represented by one step defines the minimum inspection resolution and theoretical limit of the encoder’s length sizing accuracy. rubber wheels.MX2 Training Program – Scan Menu – Encoder Parameters . The MX2 encoder calibration wizard can found in Wizard>Calibration>Type Encoder. This is a function of the hardware and will not change except for wear on the gears.Resolution The encoder resolution sets the number of counts per unit for the selected encoder and is expressed in steps\distance or steps per rotation. axels. ) 16 . The preset is typically zero but can be preset for recording a series of different acquisitions. 200-300mm. etc. 100-200mm.MX2 Training Program – Scan Menu – Encoder Origin\Preset The encoder origin position is used to set the encoder position when preset is selected or if configured on the start acquisition button. (0-100mm. MX2 Training Program – Scan Menu – Area – One Line Scan The area sub menu is used to define the area of the inspection and resolution of the inspection. These parameters are directly related to file size and an if an area is entered that would create a data file larger than the 300 megabyte maximum. 0mm 220mm 17 . the software will automatically reduce the area to within limits. The scan axis is visible on the C-scan and B-scan data views and the scan start and scan stop below will define the blue. MX2 Training Program – Scan Menu – Area – Raster Scan When a raster scan is selected both the scan and index parameters are available. 50mm 0mm 0mm 200mm 18 . Scan Resolution The scan resolution defines the interval on the scan axis that all focal laws or A-scans on all groups are recorded. 19 . The index resolution is only available when a raster or helicoidal scan (2 axis) inspection is selected. scan speed. The resolution is directly related to file size.MX2 Training Program – Scan Menu – Area . The smallest number that can be entered in the scan axis is the equivalent distance of 1 step of the encoder and would result in the most accurate length sizing accuracy possible. (1mm on each side of the C-scan or B-scan) The index resolution is a function of the pitch of the probe and is explained in detail in position C-scan section and typically only used in corrosion mapping and composite inspections. and sizing accuracy. A scan resolution of 1mm would equal a sizing accuracy of +\2mm. MX2 Training Program – Scan Menu – Data The data storage parameters are only available for inspections using an encoder. Saves the latest data. aperture or probe overlap. The need to back up the scanner to reacquire a data point occurs frequently with semi-automated manual push scanners due to missed data points from excessive speed. lack of coupling. The data of maximum amplitude in gate A is saved. verification of repeatability. mechanical problems. – Min Thickness. Only the most recent and current data is saved with no comparison. 20 . The data of minimum thickness is saved. (Scan>Inspection>Scan>Encoder1 or 2) The MX2 encoded data can be recorded in both directions on the scan axis. This is the MX2 default and most commonly used. etc. When the scan is moved over a data point by changing directions the data saved is based on the selections below: – Last. – A%. The data of maximum thickness is saved. – Max Thickness. Clears all the C-scan data and retains the encoder position.MX2 Training Program – Scan Menu – Start Mode The start sub menu contains parameters for starting and stopping the inspection. The start mode selected below determines what action happens with either the start button on the MX2 is pressed or the start button in the software is pressed. (Scan>Start>Start Mode) – Reset All. Resets all encoders to origin and clears all C-scan data. MX2 default and most commonly used. – Reset Encoder. 21 . – Reset Data. The pause button controls the acquisition by toggling between acquisition and analysis modes. Resets all encoders to origin and retains C-scan data. Free Download Manager.lnk .
Comments
Report "MX2 Training Program 12 Encoded Inspections"