Requirements for the operator ................ 2-4 Definition of a specialist .................. 2-6 Requirements for safe use .................. 2-7 Danger points of the CT system................ 2-8 Basic safety instructions.................. 2-9 General precautions ..................... 2-12 Notes........................ 2-13 Safety of the CT system............... 2-14 61211-8140502 METROTOM 1500 G3 1.4 Table of contents...
Page 4
General data ...................... 4-2 Characteristic values.................... 4-4 Electrical data ...................... 4-4 Environmental conditions .................. 4-4 X-ray system.................. 4-6 X-ray detector...................... 4-6 X-ray tube...................... 4-6 Chapter 5 Transport and installation Notes..................... 5-2 Transport .................. 5-3 To be observed on delivery.................. 5-3 Transport conditions .................... 5-3 61211-8140502 METROTOM 1500 G3 1.4 Table of contents...
Page 5
What you should know! .............. 7-2 Information on the X-ray tube................ 7-2 Setting up the workpiece and measurement ......... 7-3 Order........................ 7-3 Approaching the loading position ................ 7-3 Criteria for set-up.................... 7-3 Selecting the filter .................... 7-9 Selecting voltage and current ................ 7-13 61211-8140502 METROTOM 1500 G3 1.4 Table of contents...
Page 6
Maintenance ................. 9-2 Maintenance...................... 9-2 Maintenance intervals .................... 9-2 Maintenance work.................... 9-3 Wearing parts ...................... 9-4 Care.................... 9-6 What you should know! .................. 9-6 Overview ....................... 9-7 Inspection measures.............. 9-8 Checking the coolant level .................. 9-8 Chapter 10 Shutdown and disposal Shutdown.................. 10-2 Disposal.................. 10-3 61211-8140502 METROTOM 1500 G3 1.4 Table of contents...
Preface Information about these operating instructions The METROTOM 1500 G3 CT scanner is described in these operating in- structions. The operating instructions contain important information re- garding safe and proper use of the CT scanner. These operating instructions address operators and users of the CT scan- ner.
– Required measures to be taken by the user to avoid possible conse- quences – A measure may cause an intermediate result. – At the end of all measures, a final result may be obtained. 61211-8140502 METROTOM 1500 G3 1.4 Preface...
Page 11
This symbol refers to possible damage to the CT system. Non-observance of this safety instruction when the event occurs may cause damage to the CT or one of its components. Example: Collision between the workpiece and the X-ray tube. 61211-8140502 METROTOM 1500 G3 1.4 Preface...
Representation of menu items Source code Code …\Calypso\opt File and directories \om\protform CALYPSO Product name ZEISS Company name CAUTION! The Safety instruction embedded in the text. measuring table must be clean. Representation of position numbers in texts 61211-8140502 METROTOM 1500 G3 1.4 Preface...
Additional EC directives: EMC Directive (2014/30/EU) Applied harmonized standards, in – EN 60204-1 particular: – EN 61326-1 Table 2, Class A – EN 61010-1 – EN ISO 12100 – EN 61010-2-91 National standards: – DIN 54113-1 61211-8140502 METROTOM 1500 G3 1.4...
Safety of machinery – Electrical equipment of machines. – EN ISO 12100: Safety of machinery – General principles for design – Risk assessment and risk reduction. – EN (IEC) 61326: EMC – Interference immunity, table 2, interference emission, Class A. 61211-8140502 METROTOM 1500 G3 1.4...
Page 16
Particular requirements for cabinet X-ray sys- tems – 21 CFR 1020.40: Performance standards for Ionizing Radiation emitting products – Cabinet X-ray systems. – GB 22448: Protection rules for industrial X-ray radiographic equipment up to 500 kV. 61211-8140502 METROTOM 1500 G3 1.4...
– if the necessary maintenance work and measures for care are not carried out according to the technical documentation. Any information regarding maintenance work and measures for care, in- cidentals and wearing parts is specified in separate publications. 61211-8140502 METROTOM 1500 G3 1.4...
CT scanner is operated according to these Operating Instructions. Warranty ZEISS cannot be held liable for damage to the CT scanner and other ma- terial property as well as for bodily injury if these result from infringe- ment of these Operating Instructions.
If any structural changes are made during the warranty period, e.g. the CT system is moved without obtaining the approval of ZEISS, the war- ranty shall become null and void. Information on exposure to radiation Radiation Protection Act The METROTOM CT scanner meets the requirements of Sec.
NOTE Operation of the METROTOM is subject to licensing in accordance with Sec. 12 of the Radiation Protection Act. The following measures must be implemented by the operator to obtain an operating license: 61211-8140502 METROTOM 1500 G3 1.4...
Page 23
Failure to comply may result in substantial penalties. Other countries In other countries, the national regulations regarding X-ray protection must be observed. 61211-8140502 METROTOM 1500 G3 1.4...
– The competent specialist must have been instructed in the use of the corresponding CT system. – The competent specialist must be familiar with the relevant stan- dards, regulations, accident prevention regulations and present oper- ating conditions. 61211-8140502 METROTOM 1500 G3 1.4...
– Ensure that the Operating Instructions for the CT system are always available within easy reach of the CT system. – Ensure that the report of the review by experts is always available within easy reach of the CT system. 61211-8140502 METROTOM 1500 G3 1.4...
The X-ray radiation can be blocked by pressing the EMERGENCY STOP button. This de-energizes the door drives and the motion unit. The loading door wings can be manually slid apart (even in the de-energized state). 61211-8140502 METROTOM 1500 G3 1.4...
Remove the power plug or disconnect the electrical equipment from the power supply. Note: A power plug is not always available. The CT system are nor- mally connected via a permanent connection. 61211-8140502 METROTOM 1500 G3 1.4...
Page 28
It is extremely dangerous to continue operation of the CT system. Switch the CT system off immediately. Call a ZEISS service engineer. Foreign substances WARNING Risk of death due to electric shocks and fire caused by foreign substances in the radiation protection enclosure or in compo- nents of the CT system.
Page 29
Never put any objects onto the cables. Never step on any cables. Do not bend the cables. If cables are damaged, by all means call a ZEISS service engineer. What to do in the event of and after a fire WARNING Risk of death due to unforeseeable events caused by fires in the proximity of the CT system.
Open the loading door only for setting up the workpiece and clean- ing. Set up only clean and dust-free workpieces on the rotary table. Clean the workpieces outside the radiation protection enclosure. 2-12 61211-8140502 METROTOM 1500 G3 1.4...
Due to a leakage current exceeding 10 mA, the CT system must be equipped with a second ground wire. The sticker is located on the bot- tom left side of the controller cabinet door. 2-13 61211-8140502 METROTOM 1500 G3 1.4...
Text next to the symbol: »X-Rays pro- CAUTION duced when energized« X-Rays produced when energized – Close all doors of the radiation protec- tion enclosure before switching the X- Warning sign on the control panel ray tube on. 2-14 61211-8140502 METROTOM 1500 G3 1.4...
As soon as the main switch of the CT system is turned on, continuous safety monitoring of the loading door takes place in the controller. Func- tions, such as the speed of the loading door, are permanently moni- 2-15 61211-8140502 METROTOM 1500 G3 1.4...
Page 34
Initializing door travel Once the CT scanner has been switched on, you must carry out an ini- ➤ tializing travel of the loading door. See Initializing travel of the load- ing door [⇨ 6-9]. 2-16 61211-8140502 METROTOM 1500 G3 1.4...
Description Description This chapter contains: CT system setup................... 3-2 Components and function ................ 3-5 Control unit .................... 3-11 61211-8140502 METROTOM 1500 G3 1.4...
X-ray chamber with X-ray components The interior space of the radiation protection enclosure is called X-ray chamber. The X-ray chamber is completely enclosed with lead. The X-ray chamber contains the components: positioning system, X-ray tube, and X-ray detector. 61211-8140502 METROTOM 1500 G3 1.4...
Page 37
The loading door is electronically con- trolled and can be opened and closed by means of two buttons. Loading door 1 Double-leaf loading door 2 Movement directions of both loading door leaves 61211-8140502 METROTOM 1500 G3 1.4...
Page 38
An indicator panel with integrated warning lamps is located to the right of the loading door. The warning lamps light up as soon as X-ray beams exit from the X-ray tube in the radiation protection enclosure. Indicator panel for X-ray radiation [1] 61211-8140502 METROTOM 1500 G3 1.4...
Components and function X-ray tube X-ray tube 1 Electron source 2 Tube head 3 Collimator plate 4 High voltage cable Collimator plate 1 Tapped holes for fastening a filter holder 2 Diaphragm for exit of X-ray beams 61211-8140502 METROTOM 1500 G3 1.4...
1 Detector frame 2 Detector surface In the X-ray detector, the X-ray beams are converted into visible light in a sensitive layer. This light is again converted into an electric charge by the photodiodes located behind it. 61211-8140502 METROTOM 1500 G3 1.4...
2 Y slide 3 Travel movement in X direction 4 Bellows cover on X guide beam 5 Travel movement in Z direction 6 Travel movement in Y direction 7 Z support 8 Rotary table axis 61211-8140502 METROTOM 1500 G3 1.4...
Page 42
2 Mounting plate for workpiece pallet 3 Housing of the rotary table NOTE The magnification of the workpiece to be imaged is determined by the position of the Z support. The workpiece is rotated by the rotary table. 61211-8140502 METROTOM 1500 G3 1.4...
2 6 copper filters (thickness: 0.25 mm; 0.5 mm; 0.75 mm; 1.0 mm; 1.5 mm; 2.0 3 3 tin filters (thickness: 1.0 mm; 2.0 mm; 3.0 mm) 4 Filter for maintenance work (ZEISS service only) 5 Radiation exit window 6 Filter holder for additional filters; size: 20 × 20 mm...
Page 44
Components and function Filter changer, copper filter in front of the radiation exit window 1 Copper filter, thickness 0.75 mm ➤ See also: Inserting user-specific filters into the filter changer [⇨ 7-12] optotypes 3-10 61211-8140502 METROTOM 1500 G3 1.4...
The controller cabinet may be opened by a skilled electrician only. NOTE ZEISS USB sticks (backup or boot sticks) may only be used on ZEISS con- trollers and on computers of ZEISS service engineers. We do not assume any warranty and liability for damage due to other use.
6 Button for the drives 7 Button for closing the loading door 8 Button for opening the loading door Control element Function Main switch When the main switch is turned ON, the power supply is connected. 3-12 61211-8140502 METROTOM 1500 G3 1.4...
Page 47
It engages when pressed. The EMER- GENCY STOP button must be released before reactivating the X-ray radiation and the drives. Release the button by turning it counterclockwise. After that, the drives can be switched on again. 3-13 61211-8140502 METROTOM 1500 G3 1.4...
Page 48
After having initialized the system or after having unlocked an EMER- GENCY STOP button, the system must be reset. For this, press both but- tons of the operator door. The drives for the positioning system and the loading door can now be switched on. 3-14 61211-8140502 METROTOM 1500 G3 1.4...
Technical data Technical data This chapter contains: CT scanner.................... 4-2 X-ray system .................... 4-6 61211-8140502 METROTOM 1500 G3 1.4...
Travel range Z [mm] Weight CT system, total [kg] 6600 Sound pressure level of the CT system [dBA] <70 Measuring range: XY,1 Without detector extension [A] Diameter D , max. [mm] XY,1 Height H , max. [mm] 61211-8140502 METROTOM 1500 G3 1.4...
Page 51
Optimized for height [B2] Note: Limitation regarding the travel paths and the fixture. Diameter D , max. [mm] XY,2 Height H , max. [mm] 1500 NOTICE! Risk of collision: po- sitioning at reduced speed (MAN operating mode). 61211-8140502 METROTOM 1500 G3 1.4...
+15 °C to +35 °C Relative humidity 40% to 70% Ambient temperature for measuring opera- 20 °C ±2 K tion Reference temperature for measurement 18 - 22 °C Altitude above mean sea level Max. 2000 m 61211-8140502 METROTOM 1500 G3 1.4...
Page 53
Per hour 20.2 °C - 20.0 °C 0.8 K 20 °C - 22.0 °C 1.0 K 18.9 °C - 20.0 °C 1.1 K Not OK Wait for 48 hours until the new temperature set is constant. 61211-8140502 METROTOM 1500 G3 1.4...
Transport and installation Transport and installation This chapter contains: Notes...................... 5-2 Transport ..................... 5-3 Installation .................... 5-4 61211-8140502 METROTOM 1500 G3 1.4...
CT scanner. This document informs you about all measures to be taken for transport and installation. In the following, we will refer to some of the most important points contained in this document. 61211-8140502 METROTOM 1500 G3 1.4...
»Installation Instructions« document. NOTE The packaging may not be damaged. The packaging may only be re- moved at the installation site by a ZEISS service engineer. Ambient temperature The CT scanner and its components must remain in their packaging and be stored in a covered area until the machine is installed.
For more information, please refer to the »Installation Instructions« brochure. Installation requirements The following preparations must be made before the ZEISS service engi- neer installs the CT system: You will find all of the data required for these preparations in the “Instal- lation site requirements”.
Page 59
Start-up Start-up This chapter contains: Preparation .................... 6-2 What you should know!................ 6-4 Starting up the CT system ................ 6-6 Preparing the CT system on the user computer .......... 6-12 Start-up checklist .................. 6-13 61211-8140502 METROTOM 1500 G3 1.4...
The visual check should be part of your daily CT scanning operations. Initial start-up Initial start-up is carried out by a ZEISS service engineer. However, you must familiarize yourself with the preparations required for start-up as well as know and observe the corresponding safety instructions.
Page 61
– Mount all housing covers before taking further measures. Cable for power supply The cable must be in perfect condition. It must not be bent nor dam- aged. – Ensure that no heavy objects are lying on the cable. 61211-8140502 METROTOM 1500 G3 1.4...
Select the operating mode with the key switch. The positioning system cannot be moved. MAN operating mode (manual): The positioning system moves at reduced speed. AUTO operating mode (automatic): The positioning sys- tem moves at maximum speed. 61211-8140502 METROTOM 1500 G3 1.4...
No warm-up is possible if the CT system is in the standby mode. Start-up sequence Proceed in the following order: 1 Start the CT system. 2 Initialize the door control. 3 Preparing the CT system on the user computer. 61211-8140502 METROTOM 1500 G3 1.4...
All components are switched on, e.g. the controller and the recon- struction computer. The green indicator lamp integrated in the switch lights up to con- firm that the components are switched on. Then wait for approx. 40 seconds. 61211-8140502 METROTOM 1500 G3 1.4...
Page 65
The button stops flashing, the reference points for the loading door ➤ are set. Please also refer to Initializing travel of the loading door [⇨ 6-9]. 6 Select the operating mode. Turn the key switch to «Auto». 61211-8140502 METROTOM 1500 G3 1.4...
Page 66
Starting up the CT system 7 Switch the X-ray tube on. Turn the key switch to «ON». NOTE Afterwards, you must continue the preparations on the user computer. 61211-8140502 METROTOM 1500 G3 1.4...
The travel movement of the loading door can be stopped using one of the two buttons at any time. A new travel movement will be carried out only after pressing one of the two buttons again. 61211-8140502 METROTOM 1500 G3 1.4...
Page 68
Briefly press a button to move the loading door to the end position. Measures to be taken after an error If the door is blocked during the closing movement: – the travel movement is stopped – the “CLOSE door” button flashes 6-10 61211-8140502 METROTOM 1500 G3 1.4...
Page 69
4 Switch the controller on again. For this, turn the rotary switch for the controller to “ON”. ➤ 5 Perform the initialization run of the loading door Initializing travel of the loading door [⇨ 6-9]. 6-11 61211-8140502 METROTOM 1500 G3 1.4...
Once the control has been switched on and the loading door has been initialized, you need to initialize the X-ray components. See the METRO- TOM OS operating instructions. METROTOM OS is also used for detector calibration, axis qualification and geometric qualification. 6-12 61211-8140502 METROTOM 1500 G3 1.4...
– Have you calibrated the detector? Calibrate the detector once a month. – Have you qualified the geometry? Qualify the geometry once a week. – Have you qualified the axis? Qualify the axis once a week. 6-13 61211-8140502 METROTOM 1500 G3 1.4...
Measuring operation Measuring operation This chapter contains: What you should know!................ 7-2 Setting up the workpiece and measurement .......... 7-3 Closing measuring operations .............. 7-15 61211-8140502 METROTOM 1500 G3 1.4...
You can set the coordinate values for the loading position in the Inspec- tor for the positioning system under »Configuration«. Criteria for set-up Notes Circumscribed cylinder with large workpieces A horizontal detector extension allows measuring workpieces that ex- tend beyond the workpiece pallet. 61211-8140502 METROTOM 1500 G3 1.4...
Page 76
This is the case, for example, if compressed polystyrene in the vicinity of a sur- face to be measured appears to indicate a wrong surface. Cutting out the polystyrene is therefore preferable in most cases. 61211-8140502 METROTOM 1500 G3 1.4...
Page 77
10° to the rotating axis. In this way, disturbing arti- facts on the surfaces are avoided. The following images show the influ- ence an alignment of the part has on the quality of the result and the sharpness of the reconstructed edges. 61211-8140502 METROTOM 1500 G3 1.4...
Page 78
2 Arrange slim long workpieces in upright (vertical) position. The surfaces to be measured should be inclined at least 10° to the rotating axis. 3 Arrange larger workpieces in an inclined position. This reduces the irradiation length. 61211-8140502 METROTOM 1500 G3 1.4...
Page 79
In case of unfavorable shape and size of the polystyrene block, even the heat of the hand may cause a workpiece movement by several micrometers. It is therefore important that the polystyrene block has the same temperature as the X-ray chamber. 61211-8140502 METROTOM 1500 G3 1.4...
Page 80
Make sure that the workpiece is always shown as large as possible on the detector. This ensures the smallest possible voxel size for subsequent evaluation. NOTE The projection surface may be enlarged by rotating the workpiece. This must be taken into account. 61211-8140502 METROTOM 1500 G3 1.4...
4 days a week and more than 15 hours per day at voltages ex- ceeding 180 kV and power levels exceeding 250 W, you should use a copper filter with a thickness of at least 1 mm. 61211-8140502 METROTOM 1500 G3 1.4...
Page 82
The thicker the workpiece and the cumulative wall thickness, the higher the attenuation. – Voltage and filter The generated X-ray radiation consists of many different energies, the so-called “X-ray spectrum”. The voltage and filter influence the spectrum which strikes the object. 7-10 61211-8140502 METROTOM 1500 G3 1.4...
Page 83
If your CT system is equipped with a filter changer, you can insert your own filters into the filter changer and define them in the software. See the operating instructions for the user software. 7-11 61211-8140502 METROTOM 1500 G3 1.4...
Page 84
Rotate the filter changer so that the free filter holders point to the loading door. Carefully slide the filter into a free filter holder. Do not apply excessive force to the filter changer. 7-12 61211-8140502 METROTOM 1500 G3 1.4...
Magic Wand function in METROTOM OS. Here, the current is selected so high that the resulting focal spot size matches the currently set voxel size (as a result of the geometric ar- rangement). 7-13 61211-8140502 METROTOM 1500 G3 1.4...
The longer the scan runs the better the quality (= less noise). 6. Define the reconstruction volume. 7. Set the current via Magic Wand as described above. 8. Make the settings in the Inspector for CT measurement. 9. Start the measurement. 7-14 61211-8140502 METROTOM 1500 G3 1.4...
2 Switch the X-ray tube off. Turn the key switch to the “OFF” position. 3 Turn the key switch for the operating mode to the “OFF” position. The indicator lamp in the switch goes out. 7-15 61211-8140502 METROTOM 1500 G3 1.4...
Page 88
In order to increase the service life of the filament, the vacuum pump of the X-ray tube can remain in operation during short pauses (e.g. overnight). For point 2, also set the key switch to “Standby” and do not execute point 5. 7-16 61211-8140502 METROTOM 1500 G3 1.4...
Page 89
Errors and faults Errors and faults This chapter contains: Errors occurring prior to measuring operations.......... 8-2 Malfunctions during measuring operations........... 8-4 Special measures.................. 8-5 Service features.................... 8-6 61211-8140502 METROTOM 1500 G3 1.4...
The door control has not Perform the initialization The indicator yet been initialized. run. lamps of the «OPEN door» and ➤ – See Initializing travel «CLOSE door» but- of the loading door tons do not light [⇨ 6-9] 61211-8140502 METROTOM 1500 G3 1.4...
Page 91
1 If the above mentioned errors can be ruled out, put the CT system out of operation and repeat the start-up procedure. 2 If measuring operation is still not possible, call a ZEISS service engi- ➤ neer or our support team. See Support [⇨ 8-6]...
No initialization has – Perform a complete ini- been carried out. tialization. If measuring operation is still not possible, call a ZEISS service engineer ➤ or our support team. See [⇨ 8-6] 61211-8140502 METROTOM 1500 G3 1.4...
The button then automatically pops up and unlocks. Once the button has been unlocked, press both buttons of the load- ing door (reset). Now the loading door can be opened. 2 Reactivate the drives. 3 Exit and restart METROTOM OS. 61211-8140502 METROTOM 1500 G3 1.4...
+49 7364-206337 Monday to Friday from 8:00 to 17:00 E-Mail ct.metrology.de@zeiss.com Teleservice ZEISS offers fast and economical help in the form of online diagnostic tools. There are several options here. Teleservice tools – Online diagnosis of errors – Online software update –...
Maintenance and care Maintenance and care This chapter contains: Maintenance.................... 9-2 Care...................... 9-6 Inspection measures .................. 9-8 61211-8140502 METROTOM 1500 G3 1.4...
CT scanner qualifying them to carry out all necessary maintenance work. Maintenance agreement We recommend concluding a maintenance agreement to guarantee reli- able operation. ZEISS offers maintenance agreements relieving you of any need to worry about maintenance. – If you wish to subsequently conclude a maintenance agreement, call ➤...
In this case, the compo- nents would have to be replaced. X-ray system 2.1 Calibration Required if the X-ray tube has been opened in order to restore the measur- ing accuracy. Checking the measuring ac- curacy 61211-8140502 METROTOM 1500 G3 1.4...
CR2032 BIOS battery 000000-0180-502 Once a year Lubricant deposit in the vacuum pump 636505-4072-000 2 years Repair kit for membranes in the vacuum 636505-4073-000 2 years pump Insulator R24 160 / 225 kV 636505-4054-000 2 years 61211-8140502 METROTOM 1500 G3 1.4...
Page 99
10 maintenance services due to constant pre-tension and releasing. After two to three years, depending on the degree of utilization of the CT system, the cable can abruptly lose its high voltage stability during maintenance and has to be replaced. 61211-8140502 METROTOM 1500 G3 1.4...
You may only carry out only those measures for care that can be per- formed from the outside. Never step into the interior of the radiation protection enclosure. Call a ZEISS service engineer if there are foreign substances in the ra- diation protection enclosure. Cleaning and checking The measures for care also include the regular cleaning and checking of certain components.
Type of care Rotary table plate Every month Vacuum cleaner, cleaning agent Threaded holes in the rotary Every month Vacuum cleaner table Bellows cover Every month Vacuum cleaner Housing covers Every month Mild, normal cleaning agent 61211-8140502 METROTOM 1500 G3 1.4...
Use a suitable stepladder. The stepladder must be stable and secured against tipping. The stepladder should have a holding bow. NOTE The coolant of the X-ray tube manufacturer is used. (Order number: 000000-0572-997) 61211-8140502 METROTOM 1500 G3 1.4...
Page 103
3 Refill coolant if the cooling fins are not entirely covered by coolant. NOTICE! When refilling, make sure that the water does not overflow. 4 Replace and fasten the lid. 61211-8140502 METROTOM 1500 G3 1.4...
CT system in a dust-protected place. 1 Close all doors of the CT system. 2 Disconnect the CT system from the power supply. 3 Cover the CT system using a tarpaulin, for example. 10-2 61211-8140502 METROTOM 1500 G3 1.4...
Category 9 (WEEE) All ZEISS IMT products including goods such as TSK and OEM products sold by us and bearing the ZEISS logo are assigned to Category 9 of the Appendix of the WEEE directive. All ZEISS IMT products comply with the RoHS directive unless they are subject to a specific exemption.
Page 108
Outside the European Make sure to comply with the corre- Union: sponding laws and other local regula- tions regarding the disposal of electrical and electronic devices. 10-4 61211-8140502 METROTOM 1500 G3 1.4...
Page 109
EU Directive on the restriction of the use of certain haz- ardous substance in electrical and electronic equipment StrlSchV German abbreviation for Radiation Protection Ordinance WEEE Acronym for »Waste Electrical and Electronic Equipment«; EU Direc- tive on Waste Electrical and Electronic Equipment 61211-8140502 METROTOM 1500 G3 1.4 Glossary...
The histogram is a graphic display of the frequency distribution of the gray scale values. The histogram applies to all types of images, e. g. un- corrected and corrected detector images. Histogram Occurrence (linearly scaled) Gray-scale value Occurrence: 1854 / Gray value: 3636 Histogram 61211-8140502 METROTOM 1500 G3 1.4 Attachment...
Page 115
M, used to project the workpiece onto the detector. M = b /a In words: Distance between the X-ray source and the detector / distance be- tween the X-ray source and the work- piece. 61211-8140502 METROTOM 1500 G3 1.4 Attachment...
If the radiation intensity must be increased, the focal spot needs to be magnified to avoid melting of the target material. This is achieved by de- focusing the electron beam. Then the focus no longer lies on the target surface. 61211-8140502 METROTOM 1500 G3 1.4 Attachment...
Page 117
To avoid increased blurring of the voxel matrix due to the larger focal spot, the focal spot size must be correlated with the voxel size prior to the measurement. Note: The focal spot should be smaller than the voxel size. 61211-8140502 METROTOM 1500 G3 1.4 Attachment...
1 Slight blurring in the case of a small focal spot 2 Considerable blurring in the case of a large focal spot Influence of the distance between the X-ray source and the workpiece on blurring 61211-8140502 METROTOM 1500 G3 1.4 Attachment...
Scattered radiation generated in the workpiece or in the detector itself is relatively undirected. If it is detected, the contrast gets worse. The percentage of the scattered radiation increases with increasing X-ray energy (keV). 61211-8140502 METROTOM 1500 G3 1.4 Attachment...
Need help?
Do you have a question about the METROTOM 1500 G3 and is the answer not in the manual?
Questions and answers