1. Forewords 1.1. History The Leeb measuring method was first brought into measurement technology in 1978. It is defined as the quotient of an impact body’s rebound velocity over its impact velocity, multiplied by 1000. Harder materials produce a higher rebound velocity than softer materials.
For example: 720HLD≠720HLC Because different converting curves are obtained from different impact devices, when converting hardness HL into another hardness values, the notation for the converted hardness value should include the impact device used. For example: Hardness HRC converted from hardness L using impact device D should be written as 35, 9 HRCLD.
3. Symbols and Illustrations 1.7. Symbols and Illustrations Symbols Illustrations Leeb hardness value used with impact device D HLDL Leeb hardness value used with impact device DL Brinell hardness value Rockwell B hardness value Rockwell C hardness value Shore hardness value Vickers hardness value Rockwell A hardness value σb (N/mm2)
4. Preparation before Measuring 1.9. Requirements for the sample The surface temperature of sample should be less than 120 C. The samples must feature a metallic smooth, ground surface, in order to eliminate erroneous measurements brought about by coarse grinding or lathe scoring. The roughness of the finished surface should not exceed 2μm.
1.11. Requirement for the surface hardened layer of the sample Surface -hardened steels and especially case-hardened steels produce L-values which are too low when case-hardening depth is small because of their soft core. When measuring with impact device D/DL the depth of the hardened layer should be no less than 0.8 mm. Surface of the test sample should not be magnetic.
5. Operation 1.13. Layout of instrument 1.14. Button description (Power On/Off) Menu key, press it to enter Press it shortly to enter Press it to switch on the tester main menu config menu Press and hold it to switch off the Downward key, press it to Press and hold it to enter tester...
1.17. Measurement Screen The Measurement screen consists of Data display area and top/bottom status bar. There are four types of Data display areas: large font display, statistical parameter display, histogram display and dynamic ring display. 1.17.1. Measurement Screen-Status Bar Screen Description...
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1.17.2. Measurement Screen - Large Font Display 1.17.3. Measurement Screen - Statistical Parameter Display...
1.18. Language Menu 1. Entry Press and hold in Measurement screen to enter Language Menu screen. 2. Operation Press to move the option; Press to confirm and exit; Press and hold to exit without changing the text. Select Language Key operation For example, the corresponding changes to the screen and display after selecting Traditional Chinese.
1.19. Configuration Menu 1. Entry Press in Measurement screen to enter Configuration Menu screen. 2. Operation Press to move the option; Press to enter the option; Press and hold to exit and return to Measurement screen. Press to exit. Configuration Menu Key operation 3.
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The four styles are as follows: Display Style 1 Display Style 2 Display Style 3 Display Style 4 3. Meaning of menu Choose a display style according to preferences and the brightness of the ambient light. Display Style 1 is set for large font display with super-large test result display and maximum/minimum data processing display.
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When the testing value is lower than the evaluation value, the ring display moves clockwise. When the testing value is higher than the evaluation value, the ring display moves anti-clockwise. When the upper or lower limit is exceeded, the test result changes to red. 1.19.2.
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Press to select Hour/Min. Press to adjust the value. Press and hold to confirm and exit after showing √. Time Key operation 3. Meaning of menu The setting for time is the basic setting to obtain time-related data. 5.1.1.2. Date 1.
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Press in Date and Time screen to select Format, and press to enter Format screen. 2. Operation Press to select the format. Press (and hold) to confirm and exit after showing √. Date format: Year/Month/Day, Month/Day Year, Day/Month/Year. Format Key operation 3.
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traditional calibration method, which is used to calibrate the Leeb hardness data. The data of other scales will change following the calibrated Leeb hardness data. 1.19.4. Evaluation Mode 1. Entry Press in Measurement screen to enter Configuration Menu screen. Press select Evaluation Mode, and press to enter Evaluation Mode screen.
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Press to move the option; Press to confirm and exit; Press and hold to confirm and return to Measurement screen. Select On to enable Bluetooth port; Select Off to disable Bluetooth port. Bluetooth Key operation 3. Meaning of menu Bluetooth port is set for connecting a Bluetooth printer or Android phone. Select Bluetooth →...
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1.19.7. Screen Light 1. Entry Press in Measurement screen to enter Configuration Menu screen. Press select Screen Light, and press to enter Screen Light screen. 2. Operation Press to move the option; Press to confirm and exit; Press and hold to confirm and return to Measurement screen.
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Press to move the option; Press to confirm and exit; Press and hold to confirm and return to Measurement screen. Press Erase to clear the number of measurements. A window will appear for confirmation. Press (and hold) to delete, displaying √ after deleting successfully and return to Measurement screen;...
3. Meaning of menu Information contains the program version, machine serial number, patent number (not all), applicable standards (not all) and other information, conducive to product identification, standard management, after-sales service etc. Scan the QR code of smart phones to read the color instrument promotion information.
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Impact Device Key operation 3. Meaning of menu This option is to set the impact device. Select the proper impact device to ensure the correct reading. 1.20.2. Materials 1. Entry Press in Measurement screen to enter Menu screen. Press to choose Materials, and press to enter Materials screen.
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Press to move the option; Press to confirm and exit; Press and hold to confirm and return to Measurement screen. HL, HRC and others are scales for the hardness. Hardness Scale Key operation 3. Meaning of menu Select the proper hardness scale to ensure the correct reading. Note For some specific materials, not all hardness scales can be converted to each other.
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After setting the mean time, each time the cumulative number of measurements reaches the setting, the average number will automatically display in Display Style 1-3. 1.20.5. Limit/Deviation 1. Entry Press in Measurement screen to enter Menu screen. Press to select Limit/Deviation, and press to enter Limit/Deviation screen.
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in Limit/Deviation screen to select Upper Limit or Lower Limit, and Press press to enter Upper Limit or Lower Limit screen. 2. Operation Press to change the upper/lower finely (step 1 for Leeb's value); Press and hold to change the upper/lower coarsely (step 10 for Leeb's value);...
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Press in Measurement screen to enter Menu screen. Press to select Automatically Print, and press to enter Automatically Print screen. 2. Operation Press to move the option; Press to confirm and exit; Press and hold to confirm and return to Measurement screen.
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Press to move the option; Press to confirm and exit; Press and hold to confirm and return to Measurement screen. Save Each Measurement, Save average, Save manually are three kinds of storage; As Save manually is selected, press to save the current value after the value is displayed.
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5.1.1.8. Erase/Initialize Select Erase to delete the data in the current file. Select Initialize to delete data in all files. The deleted data cannot be restored. 1. Entry Press in Measurement screen to enter Menu screen. Press to select File / Save, and press to enter File / Save screen.
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Note There are total 31, 63 or 250 file numbers (depending on the type of instrument memory chip. Note in the order). 3. Meaning of menu Change the file No. to specify the current file to store the data. 1.20.8. Calibration This menu is used to Open/Close calibration and to enter calibration adjustments.
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Note When the adjustment is 0, the Calibration function is not enabled. Adjustment = Nominal value of standard test block - measurement of standard test block. 3. Meaning of menu The Impact may be worn after use multiple times and the measurement may be inaccurate and usually higher.
1.21. Shortcuts 1. Entry Press in Measurement screen to enter Shortcuts screen. 2. Operation Press to move the option; Press to confirm and exit; Shortcuts Key operation 3. Meaning of menu As Menu -> File / Save -> Save Manually is selected, the value is saved manually. To save the measurement, choose Save Current Value, display after saving successfully;...
Note This product does not have liquid, dust, drop and other protection. Be careful during operation. SADT does not provide free warranty service due to damage to the instrument caused by liquid, dust, drop etc. The LCD display protection is limited. Avoid sharp knife scratches or bumping. Do not clean it with organic solvents (alcohol, gasoline, etc.).
6.1.1.2. Auto Shutdown When there is no operation on Model 4100 and timing 110s, the instrument automatically shuts down. Press any key during the countdown to cancel the automatic shutdown. 1.23. Operation of Probe (1) The probe is sophisticated. Be careful during operation. (2) The probe is easy to wear.
1.24. Re-read, Save, Delete and Print Measurements Model 4100 store the measurement in the form of Record. Each record includes the measuring time (Year/Month/Day/Min./Second), Impact device, Select Material, Hardness scale, Measurement, Overrun Flag and other fields. The records are stored in files. Each file can store 100 records.
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In this way, during the measuring, the average value is saved every time it is displayed. 6.1.1.4. Save Each Measurement Press to enter Menu screen. Press to select File / Save, and press enter. Press to select Save Each Measurement and press to confirm.
6.1.1.8. Automatically Print Printing Each Measurement and Printing Average are set for Automatically Print. After Printing Each Measurement is chosen, each measurement is printed automatically after each measuring. After Printing Average is chosen, the average is printed automatically after reaching the average number. See method for enable 1.20.6 Automatically Print.
1.25. Upload Measurement to Computer 1.25.1.Driver installation Computer will prompt "Found new hardware" while the hardness tester is connected to the computer first time, please install the driver located in X:\Drivers folder. (X: means CDROM drive letter). 1.25.2.Software Installation Double click “setup.exe" to install the PC software. Please follow the installation wizard to finish it.
Do not open or remove the instrument and its fixed parts freely. The service of precision instruments should be provided by our professionals. If the instrument or sensor or other accessories are disassembled, SADT no longer offers free warranty service and the warranty associated therewith becomes also invalid.
8. Accessories 1.26. Thermal Printer 1.26.1. Precautions 1. Select proper printer model There is variety of printers available on the market, and their protocols and ports are different. Model 4100 is not designed for all printers on the market. The users shall contact the dealer to select the correct printer model.
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As shown in the figure, push and open the battery cover. Push the bottom clip of the battery into the printer. Mount the other end. Push the battery cover back. 2. Power on: Press and hold the power switch (left on the panel) for about 3 seconds, the power is on.
8. Cleaning: After the thermal printer works for long time, some dirt will leave on the thermal bar and the roller, which will affect the printer's service life. We recommend that you clean it up in time. Method: open the compartment cover, stick a little alcohol with a cotton swab and wipe the thermal head and paper roller gently.
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Picture Model Size Size of applicable Name of measurement applicable surface measurement surface Plane, cylinder, concave cylinder, Φ 9.5×5.5mm R≥60mm spherical, concave spherical Plane, cylinder, concave cylinder, Φ 3.5×5.5mm R≥30mm Spherical, concave spherical R 10mm-15mm R 14.5mm-30mm Z 10-15 Φ 20×20×7.5mm R 25mm-50mm Cylinder Z 14.5-30...
9. Calibration of Instrument The purpose for calibration of Model 4100 is to ensure the accuracy of the instrument. In ideal state, if a standard test block is measured, the actual measurement should be equal to its nominal value. However, as the impact ball head is worn, the relationship will change. After the number of measurements reaches about 1000-5000 (depending on the specific measurement situation), the measurement accuracy may decline.
10. Q&A 1.30. About Configuration Menu 1. Why the sound is turned off, but turned on after the Upper/Lower limit is enabled? A: After setting the Upper/Lower limit, once the measurement exceeds the range, Model 4100 display will give prompt. To prompt the operator, Model 4100 automatically activates the audible alarm.
2. Can Model 4100 use probe of hardness tester of other suppliers? A: The probe used on Model 4100 is specially designed Leeb hardness probe from SADT, which meets the Leeb hardness measure standard. The probe is carefully calibrated before leaving the factory.
1.35. Wireless Micro printer 1.35.1. Power on Press the power switch (left button) and hold down for 3 seconds, then the power is on. The status indicator flashes. 1.35.2. Power off Press the power switch (left button) and hold down for 3 seconds, then the power is off. The status indicator light turns off.