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Summary of Contents for DMQ QH5 Series
- Page 2 P/N: QHD501 – ENG – Rev 4 – 2020...
- Page 3 Chapter 1 First steps Know the QH5 1.1.1 Front panel 1.1.2 Connectors Install or replace batteries Connecting the impact device Using the impact device 1.4.1 Loading the impact body 1.4.2 Release and measure The “Q” key Display illumination and contrast 1.6.1 Display backlight illumination 1.6.2...
- Page 4 3.2.2 Alarm settings 3.2.3 Set histogram range 3.2.4 Select language 3.2.5 Unit information General configuration options 3.3.1 Set time and date 3.3.2 Set time and date format 3.3.3 Set keypad sensitivity 3.3.4 Set auto-off time 3.3.5 Adjust display contrast 3.3.6 Beep activation 3.3.7 Introduction screen...
- Page 5 Chapter 4 Using the Datalogger How data is organized Memory menu Creating a file Actions over single files 4.4.1 View data in a single file 4.4.2 The “Q” key in a grid 4.4.3 The “Q” key in a histogram 4.4.2 Send data from a single file 4.4.3 Rename a file...
- Page 6 And thank you for purchasing a QH5 rebound hardness tester. At dmq we develop, manufacture and distribute software and quality control instruments offering innovation and solutions that come as a direct result of listening to your needs as a user. We apply some of the latest technology available in the industry to build instruments that are robust, precise and easy to operate.
- Page 7 The information included in this manual applies to QH5 series portable hardness testers including models D, G and M. dmq is a registered trademark of demeq S.R.L and its affiliate companies. The information contained in this manual is intended to educate users on the operation of the QH5 impact hardness testers.
- Page 8 This manual provides all of the information needed to configure and operate the QH5 hardness tester. However there are additional factors that can affect tests done with this instrument. Specific information on those factors is outside the scope of this manual. When in doubt you should always seek expert advice or refer to specific textbooks...
- Page 9 The measured Leeb value (HL) represents a direct hardness value that is automatically converted to other hardness units of your choice such as Brinell, Vickers, Rockwell and Shore. Both the HL value and another selected hardness unit displayed unit screen simultaneously.
- Page 10 Impact device type D This is a “universal” type impact device because it covers the widest range of hardness units, hardness ranges and materials available on QH5 hardness tester which also means that you will cover the widest range of applications. Impact device type DC The only difference between a type DC and a type D impact device is that the body on a DC impact device is 86mm long or half the length...
- Page 11 Impact device type E While type D impact device measure up to 940HV (Vickers), type E impact devices use a synthetic diamond ball that allows for measurements in hardened or template steel up to 1211HV. The table below shows detailed technical information on each impact device type.
- Page 12 Impact body Energy (N*mm) Mass (g) Surface test piece requirements Rugosity ISO Rugos. RT (µm) Rugos. RA (µm) Minimum test piece weight (Kg) Stand alone With solid support Coupled with 0.02 paste Minimum test piece thickness (mm) Coupled Surface thickness —...
- Page 13 This section provides an overview of basic impact device components. Figure 3: Impact device components Figure 3 shows the most important parts that make up an impact device and the procedure used to remove the impact device body. Over time and depending on the number of measurements that you make the impact tip (ball) located on the impact device body will need to be replaced.
- Page 14 All QH5 series portable hardness testers are for industrial use only and cannot be used in medical applications. The QH5 operates on two AA size batteries. We strongly recommend that you use only top brand name alkaline batteries. Disposal of your QH5 and its components must be done in compliance with all applicable regulations.
- Page 15 Figure 1.1: Front of the unit Graphic LCD display with LED backlight illumination Move Left key / View partial statistics (Stat) Move Up key / Manually store a value (Store) Move Right key / Switch to graphical measure mode screen (Graph) Menu key / Enter and exit measure screen / Exit and return to menus (Home)
- Page 16 Move Down key / Quick access to memory menu screen options (Mem) Change backlight illumination key (On, Off, Auto) Enter key / Edit values on the measure screen (Edit) key: Power On and Shutdown (touch and hold for 2 seconds) / Make quick and short touches to activate special features 10.
- Page 17 The QH5 is powered by 2 (two) AA batteries that are placed in the battery compartment located in the back of the unit. To gain access to the battery compartment slide the cover as shown in figure 1.3-1 and gently push the extraction ribbon upward and slightly towards the right to release the batteries (figure 1.3-2).
- Page 18 Figure 1.4: Replace / Insert batteries Notes Always use new alkaline top brand batteries for extended battery life. Do not mix new and old batteries. Always replace both batteries. Rechargeable batteries type NiMH can be used but will result in less time of continuous operation. Chapter 1...
- Page 19 Universal non-brand impact devices can also be used as long as they have the same connector, but dmq does not guarantee their performance. To connect the impact device simply...
- Page 20 The procedure explained herein is applicable to all impact device types except for impact device type DC as it does not use a spring loading mechanism. Place the impact device over the surface you want to measure and load by gently pushing the moving body of the impact device in the same direction as the test piece surface.
- Page 21 have three functions: When the unit is off, touch for 2 seconds to power on the unit. When the unit is on, touch for 2 seconds to shutdown the unit. With the unit on, making short touches to the will activate special functions described in each chapter of this manual.
- Page 22 The display contrast on all dmq units is digital. Touch the white dot located in the center of the vertical scrolling bar between the keys and a contrast window will open. Move your finger towards the top and or bottom of the dotted line to adjust the contrast on your display.
- Page 23 Sliding the finger to the left will unlock the keypad. Figure 1.9: Unlocking the keypad Important The keypad can only be locked and unlocked in the measuring screens. Chapter 1...
- Page 24 The QH5 can display measurements in 3 numerical measuring modes or screens where each screen shows specific information. To switch screens touch the key. Figure 2.1: Measure screen mode-1 Leeb hardness value where L is Leeb and x is the impact device type Datalogger mode indicator: X: Off - M: Manual - A: Auto + (plus) or –...
- Page 25 Impact device angle indicator (Page 16) 10. User selected hardness unit (Page 19) 11. Average hardness value in the hardness unit selected by the user 12. Position of the last stored value (Column, Row) 13. Name of the open file where values are being stored (Page 43) User selected test piece material (Page 17)
- Page 26 17. Minimum hardness value within the group 18. Average deviation within the group Number of (N) values indicator for real time statistics (Page 20. Average within the group 21. Maximum hardness value within the group 22. Range within the group 23.
- Page 27 Figure 2.4: Measure screen in mode-2 select / edit mode To select angle touch (the angle can be changed even while measurements are being made). To select hardness unit touch Touch to select material. Always use the keys to edit the values in any given field and touch to save.
- Page 28 : Short touches allow you to switch between the three measure screen modes. Touch for 2 or more seconds to shutdown the unit. : Changes the backlight illumination. : Enters the direct access function established by the user. : Set display contrast. : Lock and unlock keypad.
- Page 29 Leeb hardness value where L is Leeb and x is the impact device type Hardness value in the hardness unit selected by the user Battery level indicator Impact device angle indicator High alarm indicator (Page 23) Graphic of average value within group 10.
- Page 30 Figure 2.6: Graphic measure screen in select / edit mode Use the to edit and to save the change in the hardness unit touch Hardness measurements can be taken in any direction and the impact device angle needs to be manually set in the QH5. Setting the angle is very important in obtaining reliable readings.
- Page 31 The QH5 offers you three ways of setting the impact device angle: From the measuring screen touch to enter the select / edit mode and touch to select angle. Edit using and touch to save. Touching the key as long it was set to Angle in the direct access options that can be set for this key (Page35).
- Page 32 The QH5 offers three ways to change hardness unit: On the numerical measure screen touch to enter the select / edit mode and touch to select unit. Edit using the cursor keys and touch to save. Touching the as long it was set to Unit in the direct access options that can be set for this key (Page 35)
- Page 33 The instructions explained in this chapter apply to all of the menus in the unit. To scroll QH5 menu options use the cursor keys. When you reach the end of the menu and move to the next menu option it becomes circular as shown herein.
- Page 34 The text editor is used to input, modify and delete; letters, numbers and symbols. Figure 3.3: Alphanumeric editor screens Selected key Cursor Text to be edited Virtual keyboard Use the cursor keys on the unit to scroll the virtual keyboard until you find the character that you want to use and touch to select.
- Page 35 Move cursor to the right Delete character on which cursor is on Enter and exit Figure 3.5: Quick access keys for the virtual keyboard editor Touch the key to open the direct access keyboard to the most commonly used virtual keyboard keys. Each virtual key corresponds to a key on the front panel of the unit as follows: : Move the cursor to the left : Erase the character on which the cursor sits...
- Page 36 The main menu is the first list of options you will see when you exit the measure screen and it includes the most important settings. Touch from the measuring screen to access this menu. Figure 3.6: Main menu on Unit in the main menu to open the list of available Touch hardness units.
- Page 37 Notes The units in (Figure 3.7) are for type D impact devices. Remember that the hardness units displayed depend on the impact device that is connected to the unit (Page 56). Hardness units HU1 and HU2 are user units (Page 37). The QH5 has high and low alarm conditions that alert the operator when the measurement is greater than the value set for the high alarm and or when the measurement falls below the value set for the...
- Page 38 Here you can set high and low values (hardness range) that will be represented on the vertical axis of the histogram. Figure 3.9: Set histogram range values Touch on Histo Range to open the histogram menu. on High or Low to open the numbers editor where you Touch can set values using the cursor keys and touch to save the new...
- Page 39 Select Unit Info to view information including owner data as well as the software version that your unit is running. To switch between unit information screens touch the keys. To return to the main menu touch Note The information required to obtain model upgrade licenses is included in this option.
- Page 40 Choose Set Clock to open the time editor and use the cursor keys to set the time. Touch to save and to enter the date editor screen. After you change the date touch to save and exit. Figure 3.12: Time and date edit screens Choose Clock Format to open the menu that allows you to set the time format (12Hs or 24Hs) and the date format (D/M/Y –...
- Page 41 Touch on Key Sens. and use the keys to change the keypad sensitivity. Touch to save and the keypad will already be working with the new sensitivity level. Figure 3.14: Key sensitivity setting and confirmation screens To confirm the change in sensitivity touch .
- Page 42 The unit will shutdown automatically if no key is touched or no measurement is made after a time set by you. Touch on AutoOff to set the time before the unit automatically shuts down. Touch the keys to set the time and touch to save and exit.
- Page 43 Tips Contrast on LCD screens can change with temperature. Use the contrast option to compensate for changes caused by temperature to maintain optimal viewing conditions. Beep refers to the sounds that the unit makes when keys are touched and when the audible alarm is active. Touch to enable or disable the beep option.
- Page 44 The user information that can be changed includes the following: Name: Set or change the owner name. Phone: Set or change the telephone number. Name@: Set or change the e-mail (before the @). @Domain: Set or change the domain for the e-mail (after the @). Edit Pass: Allows you to change the password needed to access this menu.
- Page 45 Certain configuration options on your QH5 so as to avoid unwanted changes. Use of the locking options allow a supervisor to optimize unit configuration settings required for a specific test and then pass the unit on to an operator for him or her to conduct actual measurements knowing that the unit has been properly configured and that specific settings cannot be changed.
- Page 46 If you purchased a QH5 D and need to use an impact device other than a type D you can always upgrade to a QH5 M with the purchase of a software upgrade license and the impact device that you need. When and if you need to upgrade we will ask for the following: ...
- Page 47 Figure 3.21: Response messages after a license is entered If the license number that you entered is correct the unit will show an updated license screen where the newly purchased license appears followed by a checkmark. Important Upgrading a QH5 to use a type G impact device you must purchase an HLG test block, when upgrading a QH5 to use type C or DL impact devices request HLD test block conversion values.
- Page 48 Select Hardness from the main menu to display measuring configuration options. Correctly setting these options is critical in obtaining reliable hardness measurements. Figure 3.23: Measuring configuration options menu Touch on Angle to select the angle in which the impact device will be used.
- Page 49 on Material to select the material that you will be Touch measuring. The options available in this menu will depend on the impact device connected to the unit (Page 56). Use the keys to scroll all menu options and touch to select.
- Page 50 Store: To manually store measurements using this key. Go to Grid: Touch to go to the grid in the open file. In order to obtain reliable measurements with your QH5 we recommend that you take at least 3 (three) measurements within 3 to 4mm from one another and use the average value as your final hardness measurement.
- Page 51 on Measure to open the measure modes options menu. Touch Figure 3.27: Measure mode options menu and set nominal value The modes in which measurements are represented are: Absolute: The unit displays the real measured value. Differential: The value displayed is a result of the value obtained from calculating: Differential = Real value –...
- Page 52 In order to create a user unit you need to choose a material from the QH5 materials menu that best matches the material that you will be measuring and you also need to choose a hardness unit. After selecting the material and hardness unit touch on Custom Units to view the menu for User Unit 1 and User Unit 2.
- Page 53 Each measurement will appear on the unit display with large numbers until the N number of samples is completed. When this happens an symbol will appear indicating that the value on screen is the average of the N measurements. Right below the average value the number that appears after can be changed to match the known hardness value of the test piece sample.
- Page 54 To enter the second reference point, follow the same procedure that you used to enter the first reference point. User units are called HU1 and HU2. In the hardness unit selection menu, newly created user units will be followed by the hardness unit that they are based on.
- Page 55 When you select Auto the impact device type that is connected to the unit is automatically detected through CalTag technology available in all dmq impact devices. Generic impact devices can be used on dmq units but the impact device type must be selected manually. When you do a manual Chapter 3...
- Page 56 selection make sure that the selected impact device corresponds to the impact device that is connected to the unit. The tip of the impact device body has a tungsten carbide ball that is subject to wear. If you get erroneous readings check the ball for signs of wear or damage / deformation and or measure using the supplied test block.
- Page 57 In order to optimize the use of the Datalogger in your QH5 it is important that you understand how data is organized. In the QH5 data is stored in 8 individual files with alphanumeric names. Each file contains a grid with columns and rows. And each grid contains columns (identified with consecutive letters;...
- Page 58 Select Memory from the main menu to view all menu options for the Datalogger. This chapter explains how to create, organize, and view files. Figure 4.2: Memory menu on Files and use the cursor keys to navigate the list of Touch files in the unit.
- Page 59 Remember that only one file can be open at any given time so whenever a new file is created, if a file was already open, the file that was open will be closed. Once a file has been closed, it cannot be reopened and new values can no longer be stored.
- Page 60 Touch on View Data to view the contents of the file. Touch to exit the file. Figure 4.6: File view in grid format To move inside the grid use the cursor keys and touch to jump to the last column that contains data. Touch on a value to open a histogram that includes that same value as well as the...
- Page 61 Touch to open the quick access menu that allows you to go directly to a position inside the grid. Select the Row, Column, and Cell using the keys. Figure 4.8: Quick access menu options in a grid Row: Enter a row number using the cursor keys so that when you touch the grid will position itself directly on that row.
- Page 62 Touch in the histogram to open the quick access menu that allows you to obtain statistical information on the group of values being displayed. Figure 4.9: Quick access menu options in a histogram Error: Displays the number of errors and error percentage values in the batch based on the high and low alarm settings.
- Page 63 Touch on Rename to open the text editor that allows you to change the file name. Touch on Size to view the number of stored values within a single file (and the size of the file as a percentage of total unit memory).
- Page 64 Touch to cancel and return to the previous menu or touch to begin deleting all files. Figure 4.11: Erase all confirmation screen When the erase all action has been confirmed the following screens will be displayed: Figure 4.12: Erase all progress screen Touch on the measuring screen to open the quick memory menu.
- Page 65 Options in the first quick access memory screen: Label: Allows you to tag a value with a number from 0 to 65535 so that it can be easily identified in the grid that you open in DataCenter. Tags are not seen in the grids displayed in the unit. Close: Closes the current file and opens a new one.
- Page 66 When a successful connection is established the files in your unit memory will appear in DataCenter. To view their contents simply double click on each file. For additional information on dmq DataCenter software please visit http://www.demeq.com In the memory menu touch...
- Page 67 Touch on Mode to select the type of connection. USB: Select USB to connect to a PC using a USB cable (included). You must already have DataCenter installed in your PC. RS232: Select RS232 to connect to a PC or a printer using an RS232 cable (optional).
- Page 68 on Capture to select the mode in which values will be Touch stored in the Datalogger. Figure 4.17: Memory capture modes menu The QH5 has two modes in which to store values Manual: Touch the key to store values. Auto: Every time a measurement is made, the value is automatically stored in the Datalogger.
- Page 69 When you enable history the Datalogger will register the unit settings for each measurement that can then be viewed in DataCenter. When history is enabled the unit memory capacity decreases as more data is stored. Touch on History to enable or disable this option and touch to exit.
- Page 70 When selecting the QH5 model that is right for you, you must first choose an impact device type. Select the impact device based on the materials, hardness units, and hardness ranges that you will be measuring by referring to the table below: Impact device type Unit Steel and cast steel...
- Page 71 Impact device type Unit Cast aluminum 30~ 165 30~ 165 — — — — Brass 40 ~173 40 ~173 — — — — 13 ~95 13 ~95 — — — — Bronze 60 ~290 60 ~290 — — — — Wrought copper 45 ~315 45 ~315...
- Page 72 Do not measure test pieces that exceed the maximum hardness limits of your impact device: Impact device type Maximum hardness D – DC – DL – E 890 HL (68 HRC) 960 HL (70 HRC) 750 HL (645 HB) To obtain precise measurements the following minimum mass and thickness requirements must be met: Impact device type Minimum test piece weight ( kg / pounds )
- Page 73 When measuring on curved surfaces the curvature radius should not go above 0.3mm in both concave and convex angles. Always use supporting rings on non-flat surfaces. Figure A.1: Measuring on curved surfaces Control your impact device on a reference test block at least every 500 impacts to check its condition.
- Page 74 Measuring Principle Impact Leeb Rebound QH5 D Impact Devices D, DC QH5 G Impact Device QH5 M Impact Devices D, DC, DL, C, G, E Materials Steel and cast steel, Alloy tool steel, Stainless steel, Grey cast iron, Spheroid iron, Cast aluminum, Brass, Bronze, Wrought Copper.
- Page 75 Connect to PC USB or RS232 Display Graphical 128 x 64 pixels with digital contrast and backlight. 24mm digits. Keypad Touch-Sense keypad with no mechanical parts and sensitivity adjustment. Battery Life 150 Hr with 2 AA type batteries. Working Temperature -10°C to +50°C Enclosure Size ABS 78x117x24 mm with rubber sides.
- Page 76 To become a part of the dmq family of users and to receive newsletters and promotional offers available only to dmq customers please register your unit. The QH5 was developed and manufactured for years of trouble free operation and even though the unit does not require special care the following precautions should be considered: ...
- Page 77 Part No. Description QHS101 Type D impact device with CalTag QHS201 Type DC impact device with CalTag QHS301 Type DL impact device with CalTag QHS501 Type C impact device with CalTag QHS601 Type G impact device with CalTag QHR101 HLD test block QHD101 ILAC certified HLD test block QHR107...
- Page 78 Figure A.2: System error message Error 1 Internal Error Cause Internal Error Solutions Shutdown the unit, wait a few seconds, and power back on. Contact dmq. Error 2 Attempt to store a value over an existing value. Cause Improper unit shutdown (Example:...
- Page 79 English Consumers are legally required to dispose of batteries at suitable collection points, vending points or dispatch bays. The crossed-out wheeled bin means that batteries must not be disposed of in the household waste. Pb, Cd and Hg designate substances that exceed the legal limits.
- Page 80 Italiano Per legge, i consumatori sono obbligati a depositare le batterie esaurite presso i punti di raccolta, i punti di vendita o i magazzini di spedizioni. Il simbolo del contenitore dei rifiuti sbarrato indica che e vietato smaltire le batterie con i rifiuti domestici. Pb, Cd e Hg indicano le sostanze presenti con valori superiori alla norma.
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