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MATERIAL CALIBRATION

mean value). This allows conclusions regarding the quality of the calibration. If

the standard deviation is too high, press ESC to repeat the calibration. Same as

for regular hardness measurements, the standard deviation of the calibration

depends   on   surface   quality,   homogeneity   and   correct   probe   handling

(perpendicular, without shaking). The standard deviation will be displayed with

one more fractional digits than usual for the hardness scale (Vickers, Brinell

and   tensile   strength   are   displayed   without   any   fractional   digits,   all   other

hardness   scales   with   one   fractional   digit).   The   standard   deviation   as

percentage of the mean value will be displayed with two fractional digits.

When the calibration is satisfying, it can be saved. Now you have to decide if

the new calibration shall replace an older one, or if the calibration should be

saved as a new one.

In the first case, you have to select the material that should be replaced.

In the second case, there are three alternatives:

1. The   material   calibration   should   be   assigned   to   an   existing

section. By these sections, the calibrations can be organized in a

two-level hierarchy, so that you can keep track even if lots of

calibrations   are   needed.   E.g.   ferrous   materials   and   aluminum

alloys can be assigned to different sections.

2. If a new section should be created, first the name of the section

and then the name of the calibrated material must be entered.

3. If the material calibration shall not be assigned to any section,

only the name of the calibrated material must be entered.

 

Now, the new calibration can be selected in  

Measuring parameter / Edit /

Material

.

27

Summary of Contents for alphaDUR mini

Page 1: ...alphaDUR mini Manual Version 1 5...

Page 2: ......

Page 3: ...Measuring procedure 15 5 4 Measuring window 15 5 4 1 Key assignment of the measuring window 17 5 5 Statistics 17 5 5 1 Display of statistics 17 5 6 Instant printout 19 6 Measuring parameter 20 6 1 Des...

Page 4: ...34 10 3 Date 34 10 4 Configuration 34 10 4 1 Date format 34 10 4 2 Key SCALE 34 10 4 3 Key MAT 35 10 4 4 Query whether the values should be saved in a series 35 10 4 5 Query whether the values should...

Page 5: ...Up to 100 000 readings including hardness date time and measuring parameter can be stored to the internal memory of the alphaDUR mini The readings are arranged in series of measurements A series of me...

Page 6: ...notes Important notes and remarks 2 2 Text boxes Operating elements Explanations of functions and operating elements are framed in blue Entry fields Green fields describe user inputs and parameters In...

Page 7: ...vertically 3 2 Probe handling The protective sleeve serves two purposes It protects the UCI rod against damages as distortion Furthermore during the measurements it functions as a mechanical stop for...

Page 8: ...facilitate the pressing probe supports separately available can be screwed instead of the protective sleeve onto the probe These probe supports are available for flat and convex surfaces Especially f...

Page 9: ...ens the main menu Cursor keys With these keys menu items are selected and the re quired values in input fields are set In drop down lists subordinate entries marked with a previous can be opened by pr...

Page 10: ...arked menu item is selected Either a window or a sub menu are now opened Press ESC to return to the previous menu 4 4 Text entry When saving measurement data and measurement parameters entries must be...

Page 11: ...ont of the input mark DEL Accepting text and closing text entry window ENTER Closing text entry windows and asking whether the text should be accepted ESC Focus on character area Selection of the char...

Page 12: ...e cursor is positioned can be modified through pressing the cursor keys and A further digit for the input of larger values can be created by cursor The input is saved and completed with ENTER With ESC...

Page 13: ...ccording to DIN standard As test loads become smaller these re quirements increase The surface must be free from oxides impurities and lubricants The surface roughness should not exceed 1 5 of the pen...

Page 14: ...lastic Homogeneity As in optical Vickers hardness tests the indentations are quite small Therefore the homogeneity of the specimen can possibly influence the measurement results To achieve reproducibl...

Page 15: ...before the protective sleeve touches the surface of the specimen Therefore vibrations caused by the protective sleeve hitting the surface will not influence the measurement result The measurement is...

Page 16: ...f the definition range of the standardized hardness testing method but may be used as approximate values are displayed in red 16 Charge status display Displays the residual charge of the batteries Tim...

Page 17: ...s the hardness scale If limits for the evaluation GOOD are specified they are automatically set to 0 In the system settings it can be determined whether the scale should be changed automatically to th...

Page 18: ...red In this view it is possible to delete obviously incorrect values To delete a value the marker is set onto the corresponding value and then DEL must be pressed If the edit window is closed with ES...

Page 19: ...bile printer is connected a consecutive printout can be made The measured data is then instantly printed The instant printout mode stays active when the measuring window is closed It must be explicitl...

Page 20: ...re converted see chapter 7 In the measurement window the hardness scale can be switched with by pressing the key SCALE Rating These are the upper and lower limits for rating A signal of two short beep...

Page 21: ...er to change a stored configuration it must first be loaded and stored again after the changes has been implemented 6 2 2 Saving measuring parameter The current measuring parameters can be stored in t...

Page 22: ...a set is loaded in which a material is selected that is not valid in the current revaluation standard see chapter 7 and 8 the revaluation standard is automatically switched to the value corresponding...

Page 23: ...dards on the applicability inaccuracy and the difficulties when converting hardness values should be taken into account Before using the conversion it should be checked if all requirements for the con...

Page 24: ...N OF HARDNESS VALUES 7 1 Selection of the conversion standard to be used In the menu item Material calibration Conversion standard can be selected if the DIN EN ISO 18265 or the ASTM E140 should be ap...

Page 25: ...tion When delivered there are already two material calibrations for steel in the alphaDUR mini stored These cannot be overwritten or deleted They only differ in the table that has been chosen Steel DI...

Page 26: ...be not converted to a hardness scale other than HV 2 Afterwards the hardness scale in which the calibration should be made must be selected This corresponds to the hardness scale of the reference samp...

Page 27: ...ation is satisfying it can be saved Now you have to decide if the new calibration shall replace an older one or if the calibration should be saved as a new one In the first case you have to select the...

Page 28: ...uld be recorded e g during the quality inspection of many identical parts As soon as the set number of values for the subordinated measurement series is recorded the statistic is displayed After press...

Page 29: ...cannot be changed while a series of measurements is taken The recording of the series is finished if the measuring window is closed You will then be asked if the hardness values should finally be save...

Page 30: ...d to which the now taken values should be added The new readings are saved incl the current date and time The measuring parameter are automatically set to the settings of the selected serial measureme...

Page 31: ...Only semicolons should be selected as the separator option when opening with a spreadsheet The USB flash drive should be formatted as MBR with FAT or FAT32 The included manual USB flash drive can be u...

Page 32: ...ame Test load e g 30 Lower rating limit e g 0 Upper rating limit e g 0 Material section e g Standard Material name e g Steel DIN Conversion table e g DIN_ISO_18265_A1 Hardness scale e g HV Number of s...

Page 33: ...Month Year Hour Minute 312 23 4 2020 10 51 reading 1 more readings 320 23 4 2020 10 51 reading n more subordinate single series more subordinate single series Single series name of subordinate single...

Page 34: ...minute Press ENTER to save the time To cancel the input press ESC 10 3 Date Choose the menu item System Date to set the current date Press ENTER to save the current press ESC to cancel the input 10 4...

Page 35: ...int values query you can determine if you want to be queried whether the data should be printed when you close the statistics window see 6 1 Statistics This happens if the statistics configuration is...

Page 36: ...the default values 10 6 System information Select System Info from the menu to display the system information The version numbers of the software kernel and system will be shown If a probe is connecte...

Page 37: ...due to the measuring method It should be no less than 15 mm Test blocks of lesser thickness e g 6 mm aren t suitable The edge length of the hardness test block must be at least 50 mm These special UC...

Page 38: ...Vickers diamond penetrates the specimen the oscillation of the rod is damped This causes a shift f of the resonance frequency which can easily be measured The damping of the rod and the resulting shif...

Page 39: ...he total area of contact proportional to d2 enters into the measurement and not only the diagonal d or a diameter Moreover the measurement results are independent from the subjective view of a single...

Page 40: ...Hausm ll Pb Cd und Hg bezeichnet Inhaltsstoffe die oberhalb der gesetzlichen Werte liegen La l gislation exige des consommateurs le d p t des piles usag es dans un lieu de collecte appropri un point d...

Page 41: ...itar las pilas viejas en un punto de recogida adecuado punto de venta centro de env o El contenedor de basura tachado significa la pilas no deben desecharse en la basura dom stica Pb Cd y Hg designan...

Page 42: ...10 20 30 49 or 98 N depending on the UCI probe Measurement range Vickers HV 10 approx 3000 Conversion range see chapter 15 Uncertainty of measurement 2 to the value of the hardness test block Memory 1...

Page 43: ...TECHNICAL DATA Depth 23 mm Probe Diameter 19 5 mm Length 175 mm Weights Device 320 g Probe 190 g 43...

Page 44: ...40 3 HRD 940 HV 76 9 HRD 240 HV 19 9 HR45N 940 HV 75 4 HR45N Tempering steel tempered B2 210 HV 205 HB 650 HV 632 HB 210 HV 15 3 HRC 650 HV 57 5 HRC 210 HV 94 8 HRB 410 HV 113 6 HRB 210 HV 651 MPa 470...

Page 45: ...4 HV 2 0 HRC 513 HV 50 0 HRC 77 HV 30 0 HRB 309 HV 106 HRB 119 HV 136 HK 382 HV 436 HK 77 HV 73 0 HRF 309 HV 116 5 HRF 112 HV 39 0 HRA 513 HV 75 5 HRA 112 HV 8 0 HRD 513 HV 63 0 HRD 171 HV 2 0 HR45N 5...

Page 46: ...HV 100 HB 832 HV 739 HB 238 HV 20 0 HRC 940 HV 68 0 HRC 100 HV 55 0 HRB 234 HV 99 0 HRB 100 HV 112 HK 940 HV 920 HK 100 HV 88 2 HRF 137 HV 99 6 HRF 100 HV 37 2 HRA 940 HV 85 6 HRA 238 HV 40 1 HRD 940...

Page 47: ...cluded 40 HV 42 8 HK 0 5 130 HV 133 8 HK 0 5 40 HV 40 2 HK 1 130 HV 138 7 HK 1 Alloyed White Irons 8 380 HV 357 HB 1000 HV 903 HB 380 HV 35 0 HRC 1000 HV 70 0 HRC Wrought Aluminum Products 9 44 HV 40...

Page 48: ...orms with or without modification are permitted provided that the following conditions are met Redistributions of source code must retain the above copyright notice this list of conditions and the fol...

Page 49: ...TO PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES LOSS OF USE DATA OR PROFITS OR BUSINESS INTERRUPTION HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY WHETHER IN CONTRACT STRICT LIABILITY OR TORT INCLUDIN...

Page 50: ...BAQ GmbH Hermann Schlichting Stra e 14 38110 Braunschweig Germany Tel 49 5307 95102 0 Fax 49 5307 95102 20...

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