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DMQ QH5 U User Manual

Uci portable hardness tester
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Summary of Contents for DMQ QH5 U

  • Page 2 P/N: QHDU 501 – ENG – Rev 01 – 2017...
  • Page 5 The “Q” key Display illumination and contrast 1.7.1 Display backlight illumiination 1.7.2 Display contrast Locking and unlocking the keypad Chapter 2 Measuring with the QH5 U Numerical measuring screens (Normal) 2.1.1 Mode-1 screen (Datalogger) 2.1.2 Mode-2 screen (Material) 2.1.3 Mode-3 screen (Statistics)
  • Page 6 Chapter 3 Menu system and editing Instructions on using the menu system 3.1.1 Text editor Main menu 3.2.1 Change hardness unit 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 Time and date 3.3.2 Time and date format 3.3.3...
  • Page 7 4.8.1 Configure communications 4.8.2 Capture modes 4.8.3 Advanced configuration Tips on how to measure correctly Measuring ranges and hardness units Technical specifications Additional information Unit maintenance QH5 U accesories Error messages Our website: www.demeq.com Firmware and software updates Technical support...
  • Page 8 And thank you for purchasing a QH5 U UCI portable hardness tester. At Demeq 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 9 The information contained in this manual is intended to educate users on the operation of the QH5 U hardness testers. Failure to read and understand this manual can lead to measurement errors. Decisions based on measurements and or results that are erroneous can lead to property damage, personal injury or even death.
  • Page 10 The QH5 U operates on the UCI or Ultrasonic Contact Impedance method of hardness testing where just like in conventional methods...
  • Page 11 Figure 2. Figure 2: Relationship between hardness and frequency We offer 2 UCI probes with the QH5 U that differ in the test loads. UCI probe part no. QHS010 with a 10N / 1Kgf load This probe is ideal for surface hardness measurements as well as parts with low roughness and polished surfaces.
  • Page 12 To obtain better results always use the UCI probe perpendicular to the test piece surface. The QH5 U portable hardness tester is for industrial use only and cannot be used in medical applications. The QH5 operates with two alkaline “AA” size batteries. Use only top brand name batteries.
  • Page 13 Because software is complex in nature and errors may eventually appear you should check that functions required for your application are working correctly. Demeq provides a limited 5 (five) year warranty on electronic units and 6 (six) months on probes from the date of purchase. Please remember to register your unit at: http://www.demeq.com/Contact.html Every instrument undergoes thorough testing during manufacturing...
  • 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 functions 10.
  • Page 17 The QH5 U is powered by 2 (two) “AA” batteries that go in the battery compartment located in back of the unit. To open the battery compartment slide the cover as shown in Figure 1.3-1 and gently push the extraction ribbon upward and towards the right to release the batteries (Figure 1.3-2).
  • Page 18 Figure 1.4: Replace / Insert batteries Important Do not remove batteries while the unit is turned on as this may affect the Datalogger (See Appendix: “Additional information, Error Messages”) Notes Always use new alkaline top brand batteries for extended battery life, rechargeable NiMH batteries can be used but will result in less time of operation.
  • Page 19 When the UCI probe is connected to the QH5 U a message is displayed indicating that the probe has been recognized. At this time do not try to measure as the unit will briefly auto-calibrate and in order for the unit calibration to proceed normally the UCI probe needs to be “left alone”.
  • Page 20 Probe holding area (knurled) Bottom end of the probe Vickers indentor (synthetic diamond) Holding accesory Holding area for accesory Adapting ring with 2 sides (flat and “V” cut) The holding accesory and the adapter are threaded to the UCI probe body (accesory 7 is threaded to the probe and the adapting ring 9 is threaded to accesory 7).
  • Page 21 Figure 1.7-A shows the UCI probe with the flat side of the support ring to measure on flat surfaces. In Figure 1.7-B the ring has been removed to measure over a concave sufaces (also used to measure in hard to reach areas, weld joints, etc). Figure 1.7-C shows the probe with the “V”...
  • Page 22 For precise and repetitive measurements force must always be applied in 3 simple steps as seen in Figure 1.9 Figure 1.9: Preloading and loading the probe From the measuring screen first set the probe on a test point without applying force 1. Then apply a preload force that will take the indenter “half way”...
  • Page 23 reading is obtained and a final message 3 asking you to lift the probe. Repeat these simple steps for every measurement. key has 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.
  • Page 24 The contrast on the QH5 U 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 25 Sliding the finger to the left will unlock the keypad. Figure 1.14: Unlocking the keypad Important The keypad can only be locked and unlocked in the measuring screens. Chapter 1...
  • Page 26 There are three modes in which the QH5 U can display measurements and information. Use the key to switch modes as described in the following sections. Figure 2.1: Mode-1 screen Average hardness in the selected unit Datalogger mode indicator; X: Off - M: Manual - A: Auto + (plus) or –...
  • Page 27 11. Open file name where values are being stored (Page 43) Figure 2.2: Measuring screen mode-2 12. User select material Figure 2.3: Measuring screen mode-3 13. Minimum hardness value within the group 14. Average deviation within the group Number of (N) values for real time statistics (Page 38) 16.
  • Page 28 18. Range within group 19. Location of the last stored value within the open file Keys in all three numerical measure screen modes have the following functions: : Touch to generate real time statistics based on the number of (N) stored values at the time this function is activated. : Touch to manually store the measurement in the memory.
  • Page 29 • To select hardness unit touch Always use the keys to edit the values in any given field and touch to save. Notes The material can only be changed in the numerical measure screen in mode-2 (Page 13). When the hardness unit is changed statistics, graphics and the actual hardness value on screen are set to zero.
  • Page 30 The QH5 U allows you to view graphic representations of measured values in real time and in two different modes. Figure 2.5: Graphical measuring screens (mode-1 and mode-2) Maximum hardness value within group Minimum hardness value within group Average within group...
  • Page 31 Available hardness units depend on the selected material. With the QH5 U there are 2 ways to change the material being tested: Chapter 2...
  • Page 32 Edit using the cursor keys and touch to save. • From the main menu under Materials (Page 33). The QH5 U offers three ways to change hardness unit: • On the numerical measure screen touch to enter the select / edit mode and touch to select unit.
  • 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 carácter 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 Note: “Memory", "Configure” and "Hardness" are explained in detail in Chapters 4, 3.3 and 3.4 of this manual.
  • Page 37 The QH5 U has high and low alarm conditions that alert the operator when the measurement is greater than the value set for the high alarm or when the measurement falls below the low alarm value. Touch on Alarms to open the alarm menu options.
  • Page 38 Figure 3.9: Set histogram range values Touch on Histo Range to open the histogram menu. Touch on High or Low to open the numbers editor where you can set values using the cursor keys and touch to save the new value and return to the previous menu.
  • Page 39 the software version that your unit is running. To switch between unit information screens touch the keys. To return to the main menu touch Touch on the Configure option to open the general configuration options menu. Use the keys to scroll the menu. Touch to select any of the menu options.
  • Page 40 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 – M/D/Y). Touch on the option you wish to select and touch to save and exit.
  • Page 41 Figure 3.14: Key sensitivity setting and confirmation screens To confirm the change in sensitivity touch . If you touch any other key or the on-screen counter reaches 0.0, the sensitivity will return to its previous setting. The factory default setting is 50. Under special conditions we suggest that the sensitivity level be changed.
  • Page 42 Touch the keys to set the time and touch to save and exit. Touch to exit without changes. Figure 3.15: AutoOff time setting screen Contrast settings allow you to turn your screen lighter or darker where 1 is the lightest and 32 is the darkest. Touch on Contrast and use the keys to change the...
  • Page 43 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. The introduction screen is the first screen that you see after the unit is turned on and includes owner information such as name, telephone number and e-mail.
  • Page 44 Certain configuration options on your QH5 U unit can be locked in order to avoid unwanted changes. Use of the locking options allows 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...
  • Page 45 conduct the actual measurements knowing that the unit has been properly configured and that settings cannot be changed. Touch on Locks, enter your password and then touch again to view the configuration options that can be locked. Figure 3.18: Enter password and options lock menu Each option is followed by a lock indicating whether the feature is locked (closed lock) or unlocked (open lock).
  • Page 46 Touch on Material to select the material that corresponds to the part that will be tested. The QH5 U is calibrated from factory to measure steel and additionally another 8 materials can be generated by the user with samples of a known hardness value as explained in point 3.4.2 below...
  • Page 47 For materials that where not created (User Mat. 3 to 8 in figure 3.21) the option to select that material will not appear. The QH5 U can add up to eight (8) materials or alloys. To create a new material the user must have calibration test blocks or samples of a known hardness of the same material that is being created.
  • Page 48 To begin adding a new user material touch on Calibrate and a menu will be displayed with standard base materials needed to create the new user material. Figure 3.23: New user materials menu The next step is to choose a base material that is the same (or the closest in case of alloys) to the material of the calibration test blocks or samples and touch...
  • Page 49 The last and most important step is to enter the hardness values of the calibration test blocks or samples. To begin this process touch on Calibrate. Figure 3.26: First calibration point for the user material To enter the first calibration point for the new user material make N number of measurements on a calibration test block of a known hardness value.
  • Page 50 • touch the to add another calibration point • touch the to finalize setup of the new user material with just one calibration point When a new material is created using one point calibration only displacement for the selected table (base material) is generated. This is known as a grade 0 (zero) ecuation and could be insufficient to obtain reliable readings.
  • Page 51 To erase a user material go to Delete in the new user materials menu. Keep in mind that the name is kept unless you change it. Notes By default user materials that have not been created are listed as “User Mat. X” The number of (N) samples used for calibration is set in Group (N) (page 39).
  • Page 52 In order to obtain more reliable measurements with your QH5 U we recommend that you take at least 3 (three) measurements within 3 to 4mm from one another and use the average of all 3 values as your final hardness value.
  • Page 53 Use the keys to set the time (miliseconds) and touch to save and exit. Touch to exit without changes. Figure 3.29: Adjust unit Dwell time This option allows you to set a measuring filter so that noisy or erroneous measurements are discarded. In practice this means that obtaining precise readings takes more time as extra care must be taken when preloading the probe.
  • Page 54 Important Keep in mind that setting the filter for more precision means extra care particularly when measuring soft non- ferrous materials or steel under 400HV. on Measure to open measuring mode options. Touch Figure 3.31: Measure mode options and nominal value The modes in which measurements can be represented are: Absolute: The unit displays the real measured value.
  • Page 55 Choose Set Default to return to the original factory default hardness configuration settings. Touch and a confirmation screen will appear. Touch to confirm and return to the previous menu or touch to exit without making changes. Figure 3.33: Set factory default settings confirmation screen Chapter 3...
  • Page 56 In order to optimize the use of the Datalogger in your QH5 U you first need to understand how data is organized. Up to 8 individual files with alphanumeric names are used to store data. Each file contains a grid with columns and rows, and each grid contains columns identified with consecutive letters (A, B, …AA, AB…) that store an N...
  • Page 57 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 Touch on Files and use the cursor keys to navigate the list of files in the unit.
  • Page 58 After you enter a name a checkmark will appear meaning that a new file has been created and is ready to be used. Remember that only one file can be open at any given time so when a new file is created and a file was already open, the open file will be closed.
  • Page 59 on View Data to view the Touch contents of the file. Touch to exit the file. Figure 4.6: View data in file (grid format) To move inside the grid use the cursor keys and touch to jump to the last column containing data. Touch on a value to open a histogram that includes that same value as well as the...
  • Page 60 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 61 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 62 on Send to send (units with Datalogger only) a single file to a PC using Windows HyperTerminal, or to a printer using an RS232 connection. This option does not work in USB mode. 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 63 The Erase All action permanently deletes all files stored in the unit memory and recovers 100% of the memory capacity. Before files are deleted, a screen will be displayed asking you to confirm or to cancel this action. Touch to cancel and return to the previous menu or touch to begin deleting all files.
  • Page 64 Touch on the measuring screen to open the quick memory menu. Figure 4.13: Quick memory menu options In each quick memory menu screen three options are displayed. To access these options use the keys. To change memory screens use the key as seen on figure 4.13.
  • Page 65 Figure 4.14: Connecting to a PC With the unit waiting to connect plug the USB cable first to the QH5 U and then to the PC, open dmq DataCenter software and click <Connect> in DataCenter. When a successful connection is established the files in your unit memory will appear in DataCenter.
  • Page 66 In the memory menu touch Configure open Datalogger configuration options menu. Figure 4.15: Datalogger configuration menu The first two options in the configure Datalogger menu are Mode and Send which allow you to select how the unit will communicate with a PC (USB or RS232) and if you will be sending data to a PC or an external printer.
  • Page 67 Datalogger. Figure 4.17: Memory capture options The QH5 U has two modes in which to store values Manual: Touch the key to store values. Auto: Each time a measurement is made it is automatically stored in the Datalogger, when this option is selected you can also store values touching the key.
  • Page 68 Touch on Advanced to access the advanced configuration options menu for the Datalogger. Figure 4.18: Advanced configuration options When you enable History the Datalogger will register the unit settings for each measurement that is stored (this information can only be viewed in DataCenter).
  • Page 69 Choose the UCI probe that is best suited for your application and take all of the following into consideration. Material Unit Steel Aluminum Copper Brass 100~940 44~189 40~130 45~196 95~500 40~160 75~120 42~169 55~100 28~91 2~67 10~93 20~68 — — —...
  • Page 70 To obtain best results you should always take an average of at least 3 measurements. Do not apply force on the UCI probe right after connecting the probe to the unit as this may cause the internal calibration to fail. Always make sure to configure the unit to the material being tested.
  • Page 71 Measuring principle UCI (Ultrasonic Contact Impedance) UCI probes QHSU10 (10N) / QHSU50 (50N) Base materials Steel, aluminum, copper, brass Units Vickers, Brinell, Rockwell B / C, Shore, Resolution Vickers : 1 HV (complete range) Brinell : 1 HB Rockwell : 0,1 HRB / C Shore : 0,1 HS MPa: 1 MPa Measuring range...
  • Page 72 PC connection USB and RS232 LCD display Graphic pixels with adjustable contrast and backlight. 24 mm tall digits. Keypad Touch sense keypad with mechanical parts. Battery life with type "AA" alkaline batteries. Operating Temperature -10°C to +50°C Dimensions 78 x 117 x 24 mm Weight 200 gr with batteries Appendix...
  • Page 73 The QH5 U 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 74 Thermal printer USB connecting cable QAI001 Thermal printer Test Blocks Inquire on HV, HB, HRB, HRC test blocks available in steel as well as in other materials For more information on accessories available for your QH5 U please contact Demeq at infodemeq@demeq.com Appendix...
  • Page 75 Under abnormal conditions an error messages may appear be displayed on the unit screen and should be treated as informational only. If an error message is displayed follow the instructions described below and if the problem persists please send us a detailed report at: http://www.demeq.com/form_Support.html Figure A.2: System error message Error 1...
  • Page 76 • Firmware and software updates • New accessories To download firmware and software updates to your QH5 U you must have dmq DataCenter installed on your PC. To download the latest updates visit: http://www.demeq.com/Download.html Our service department is committed to providing prompt and courteous service.
  • Page 77 P/N QHD5U01-ENG Rev 1 ©2017 dmq...