DMQ QB7 User Manual
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DMQ QB7 User Manual

Hall effect thickness gauge
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Summary of Contents for DMQ QB7

  • Page 2 QB7 User Manual Hall effect thickness gauge P/N: QBD 701 – ENG – Rev. 01 – July 2020...
  • Page 4 1.2.2 Charging the battery Special keys 1.3.1 The “Q” key 1.3.2 Color backlight illumination Chapter 2 Measuring with the QB7 Measuring screen modes 2.1.1 Large numbers mode (Easy reading) 2.1.2 Numeric screen mode-1 (Numerical) 2.1.3 Numeric screen mode-2 (Statistics) 2.1.4...

  • Page 5: Table Of Contents

    User Manual 2.1.5 Graphic screen mode Use of keys in measuring screens Icon indicating unit condition Target ball selection Calibration Changing the sensor tip Sensor tip calibration 2.7.1 Tip cal menu 2.7.2 Tip adjustment 2.7.3 Tip calibration memory Capitulo 3 Menu system and editing Basic rules on the user interface 3.1.1...
  • Page 6 User Manual Measuring configuration options 3.4.1 Target ball selection 3.4.2 Set histogram range 3.4.3 Set histogram size 3.4.4 Set measuring mode 3.4.5 Measuring refresh rate 3.4.6 Select QSet button function 3.4.7 Select external pedal function 3.4.8 Configure send in RS232 3.4.9 Hold last measurement 3.4.10...
  • Page 7 Enable or disable history 4.8.9 Configure time and date options Apendix Tips on how to measure correctly Accuracy Taking care of the probe Technical specifications Additional information Unit maintenance QB7 accessories Error messages Proper disposal Our website: www.demeq.com Technical support...
  • Page 8 Quick answers to your inquiries. • Unlimited access to technical information as well as application notes. • Firmware and software upgrades at no charge. • Attention to your inquiries and suggestions. We hope that the QB7 will meet and exceed your application needs.
  • Page 9 Important notice The information contained in this manual is intended to educate users on the operation of QB7 hall effect thickness gauges. 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 Measuring principle The QB7 uses a strong magnetic field to attract a steel or magnetic ball that when reaching the tip of the probe affects its magnetic field. Using a hall effect sensor the unit measures changes in the magnetic field that are then converted to the thickness values seen on the unit screen.
  • Page 11 Target balls Each QB7 includes a calibration kit with the target ball diameters needed to measure in the range for the QB7 model that you purchased. Also included with the target balls are “zero” calibration fixtures for each ball diameter.
  • Page 12 The graph below shows ball diameters and their measuring ranges. Figure 2: Target ball diameters vs measuring ranges Note The sensor QBS201 can be used with steel target balls only while the sensor QBS301 can be used with both steel and magnetic target balls (QB7 E model).
  • Page 13 User Manual Calibration fixtures QB7 calibration kits include a set of calibration fixtures designed for specific use with dmq sensors. Available calibration fixtures for different steel target ball diameters are: Calibration fixtures for steel target balls Part # Thickness QBR201 Zero cal fixture for 1.59 mm or 1/16"...
  • Page 14 Figure 3-3 shows the calibration fixture ready to be used to calibrate the specific thickness value. If you have an extended range model (QB7 E) additional calibration fixtures are included for magnetic target balls.
  • Page 15 User Manual Calibration fixtures for magnetic target balls Part # Thickness Magnetic target ball 10 mm (395 mils) 4,76 mm - 3/16 inch QBR108 6,35 mm - 1/4 inch 14 mm (550 mils) 4,76 mm - 3/16 inch QBR109 6,35 mm - 1/4 inch QBR110 18 mm (710 mils) 6,35 mm - 1/4 inch...
  • Page 16 What can affect measurements QB7 sensors are highly sensitive devices that can be affected by changes in the environment and other factors explained herein: Changes in temperature and magnetic field...
  • Page 17 User Manual Vertical surface measurements When measuring vertical surfaces with high thickness values, the target ball may fall off the center of the sensor tip due to gravity which will in turn result in thickness values that are greater than the real thickness of the test piece being measured.
  • Page 18 Figure 5: Holding sensor area when the sensor is handheld The QSet button The QSet button located in the QB7 sensor is readily accessible so that you can compensate for environmental...
  • Page 19 Precautions when using magnets The following precautions should be taken into consideration when using magnetic balls as well as the QB7 sensor because of the strong magnetic field that the sensor has in order to attract steel balls when measuring:...
  • Page 20 User Manual Keep magnets away from children and adults that suffer from mental illnesses. Do not burn rare earth magnets as they may release toxic vapors. Do not bring magnets close to diskettes, hard disks, magnetic cards, magnetic strips or any other storage device that is supported magnetically as this may alter contents or erase them completely.
  • Page 21 User Manual 1 First steps 1.1 Knowing the QB7 1.1.1 Front panel Figure 1.1: Front panel Graphic LCD display with RGB backlight illumination Scroll left key / View partial statistics (Stat) Calibration key Scroll right key / Change measuring modes / screens (View)
  • Page 22 User Manual Set backlight illumination (On, Off, Auto) Scroll down key / Quick access to screens with memory options (Mem) š key: On Off (hold for 2 seconds) / Special functions 10. Scroll up key / Store measurement manually (Store) 1.1.2 Connectors Figure 1.2: Connectors Lemo 0B - 3 pin for external pedal (optional)
  • Page 23 “Slow Charge” icon in screen. 1.2.2 Charging the battery The QB7 can be charged with a cable connected to a USB port in a PC or with a standard 5V power supply that has a micro USB connector, using a 1,5 amp (or more) power supply and a cable shorter than 1 meter long (about 3 feet) you will be fast charging the batteries.
  • Page 24 User Manual 1.3 Special keys 1.3.1 The “Q” key key has three functions: When the unit is off, press for 2 seconds to power on the unit. When the unit is on, press for 2 seconds to power off the unit. With the unit on, making short presses to the will activate special functions described in each chapter of this...
  • Page 25 User Manual 2 Measuring with the QB7 The QB7 can display measurements in 3 different modes or screens that show specific information. To switch screens press the key. 2.1 Measuring screen modes 2.1.1 Large numbers screen (Easy reading) Figure 2.1: Large numbers mode...
  • Page 26 User Manual 2.1.2 Regular numeric screen mode-1 (Datalogger) Figure 2.2: Screen mode-1 Name of the open file where values are being stored Minimum thickness / Differential / Percentage depending on selected mode ( Page 38 Datalogger mode indicator: X: Off - M: Manual - A: Auto Battery level indicator / charger Thickness measurement displayed in real-time Icon indicating unit condition (Page 11...
  • Page 27 User Manual 2.1.3 Regular numeric screen mode-2 (Statistics) Figure 2.3: Screen mode-2 10. Average thickness / Differential / Percentage depending on selected mode ( Page 38 11. Minimum measured value 12. Measurement range (Maximum – Minimum) 13. Maximum measured value 2.1.4 Regular numeric screen mode-3 (Wall tester) Figure 2.4: Screen mode-3 14.

  • Page 28: Graphic Screen Mode

    User Manual Because the presence of ferrous materials will affect measurements the wall tester is a unique QB7 feature that allows you to check ferrous content on the material being measured. In order to conduct the test you need to hold the sensor in the air,...

  • Page 29: Use Of Keys In Measuring Screens

    User Manual Diameter of the target ball being used Thickness measurement displayed in real-time Battery level indicator / charger Target ball type indicator: S=Steel, M=Magnetic Icon indicating unit condition ( Page 11) Graphic of the last N values stored in the Datalogger / Real- time graphic of values being measured (Pages 10 and 38) 10.
  • Page 30 User Manual To change the unit press the keys. To change the target ball size press the keys. Figure 2.6 Floating window in select / edit mode To save and exit press or to exit without saving press : Starts statistical values. : Enter calibration mode for the selected ball.

  • Page 31: Icon Indicating Unit Condition

    User Manual 2.3 Icon indicating unit condition This icon is a quick and easy way for the user to know the condition of the unit as well as the sensor. The following table shows all possible unit conditions: Icon Unit / probe condition Sensor is disconnected (the icon is dotted).

  • Page 32: Target Ball Selection

    0 (zero). In the QB7 target ball sizes can be selected from the measuring screen (page 10) as well as in the configuration menu (page 36) or when the “Auto”...
  • Page 33 User Manual probe empty and then measuring the minimum posible thickness for the selected target ball. The QB7 must be calibrated for each target ball size when the target ball is changed. To begin the calibration process press the key and the unit will display one of the 2 messages that appear in figure 2.8 asking you to...
  • Page 34 User Manual The unit will then display a message asking that you leave the sensor empty (without a target ball) and press To cancel the calibration press Figure 2.9 Probe calibration without a ball As mentioned before you can do up to 8 calibration points using calibration fixtures that have the closest values to what you will be actually measuring but you need to conduct at least 1 calibration point to finish with the minimum calibration process.
  • Page 35 User Manual values. With EZ-Cal activated Without EZ-Cal activated Figure 2.11 Editing calibration points With EZ-Cal activated you can press the key to copy the measured value (Meas.) in the reference field (Ref.) so that you can edit from here. Once the reference value has been adjusted you can continue to calibrate on additional calibration points by pressing the or you...

  • Page 36: Changing The Sensor Tip

    Even though dmq sensor tips are hard coated to ensure durability, over time the tip will begin to wear affecting the accuracy of the QB7. If this happens the tip needs to be replaced and calibration is needed for the new tip. And since special tips for specific applications are also available calibration is also needed when changing tips.

  • Page 37: Sensor Tip Calibration

    User Manual To replace or change the tip (2) simply unscrew and take off the cap (1), replace or change the old tip for a new standard or special tip and gently screw the cap back making sure the tip sits in position. In order to make sure the tip (2) is properly placed you can gently screw and unscrew the cap (1) until the tip falls into position.

  • Page 38: Tip Cal Menu

    User Manual Tip cal menu 2.7.1 Cfg.Measure » Tip Adjust When choosing the Adjust tip option a menu as seen in figure 2.13 will be displayed with the option to begin the adjustment process for a tip and memories of tips that where previously adjusted. Figure 2.13 Adjust tip menu 2.7.2 Tip adjustment in the Adjust Tip option...
  • Page 39 User Manual Figure 2.15 Second step for adjusting the tip For the third and last step the unit will ask that you remove the target ball and press to finalize the adjustment process. If the adjustment was successful the unit will display a message saying that the tip has activated auto target ball detection mode to automatically detect the target ball size during calibration.

  • Page 40: Tip Calibration Memory

    User Manual Important Before conducting the tip adjustment process check to make sure that the sensor is nowhere near ferrous elements or magnetic fields. The tip adjustment process cannot be interrupted once it begins so if you wish to cancel simply go through with the process without placing target ball over the sensor as required in the second step of the tip adjustment process.
  • Page 41 User Manual The 3 options that appear on the tip memory screen are explained herein: Option Access Function Opens the memory adjustment that you Open select overwriting the existing adjustment. Saves the current adjustment. Save Opens the text editor so that you can edit Name the memory name (see page 23).

  • Page 42: Capitulo

    The instructions explained in this chapter apply to all of the menus in the unit. To scroll QB7 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 43: Text Editor

    User Manual 3.1.2 Text editor 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 to scroll the virtual keyboard until you find the character that you want to use and press to select.
  • Page 44 User Manual Press 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: Figure 3.5: Quick access keys for the virtual keyboard editor : Move cursor to the left : Delete character on which cursor is on : Move cursor to the right...

  • Page 45: Main Menu

    User Manual 3.2 Main menu The main menu is the first list of options you see when you exit the measuring screen and includes some of the most important settings. Press from the measuring screen to access this menu. Figure 3.6: Main menu Note: The "Memory", "Cfg.Measure”...

  • Page 46: Alarm Settings

    3.2.2 Alarms The QB7 has high and low alarm conditions that alert the operator when a measurement is greater than the value set for the high alarm and or when a measurement falls below the value set for the low alarm.

  • Page 47: Select Language

    User Manual Select language 3.2.3 Language Press on language (which is also identified with a flag) to view available language options. Use the cursor keys to navigate available to select. language options and press Press to save and exit this menu. Figure 3.9: Language menu options Unit information 3.2.4...

  • Page 48: General Configuration

    User Manual General Configuration Cfg.General Press on the Configure option to open the general configuration options menu. Use the keys to scroll the menu. Press to select any of the menu options. Press to exit and to return to the previous menu.

  • Page 49: Time And Date Format

    User Manual Date and time format 3.3.2 Cfg.General » Clock Format 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). Press on the options that you wish to use and press to save and exit.

  • Page 50: Adjust Display Contrast

    Set display color 3.3.5 Cfg.General » Back Color Press on Display Color to change the background color on your QB7 display using three bars that represent three basic colors; R: red, G: green and B: blue. Chapter 3...

  • Page 51: Beep Activation

    User Manual Use the keys to adjust colors individually (the color you selected will have a flashing indicator) and then use the key to adjust another color. Press to save and exit or press exit without changes. Figure 3.16: Display background color settings screen Beep activation 3.3.6 Cfg.General »...
  • Page 52 User Manual Figure 3.17: Enter password and owner information menu The owner information that can be entered / 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 @).

  • Page 53: Lock Configurations

    Lock configurations 3.3.9 Cfg.General » Locks Specific configuration options on the QB7 can be locked in order to avoid unwanted changes. Use of the locking options for example 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 the actual measurements knowing that the unit has been properly configured and that the settings cannot be changed.

  • Page 54: Model Upgrade License

    3.3.10 Cfg.General » Licenses A QB7 B can be upgraded to a QB7 E with the purchase of an upgrade license and an upgrade calibration kit. In order to issue a model upgrade license we will ask you for the unit serial number.

  • Page 55: Set Factory Defaults

    User Manual After you enter the new license number the unit will respond with one of the following messages: 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.
  • Page 56 User Manual Measuring configuration options Cfg.Measure Choose Cfg.Measure in the unit main menu to view all available measurement configuration options. Use the keys to scroll the menu and press to select a specific option. . To exit the menu press The Adjust Tip option is explained in section 2.7.1 Figure 3.23: Measuring configuration menu...
  • Page 57 User Manual When using a standard tip on dmq hall effect sensors the unit can automatically detect the target ball. You can enable or disable AutoBall which is the first item in the target ball selection menu (see figure 3.24) by placing a checkmark on this option. When AutoBall is enabled the unit automatically recognizes the target ball during calibration.
  • Page 58 In this option you can set the number of bars to be displayed in the histogram for up to 16 bars. By default the graphic measuring screen in the QB7 shows a histrogram with 5 bars corresponding to the last 5 measurements.
  • Page 59 User Manual Differential : A value is displayed that is the result derived from: Differential = Measurement – Nominal Percentage : A value is displayed that is the result derived from: Percentage = (Measurement / Nominal) * 100 The nominal value is a reference value that can be set for the test piece.
  • Page 60 Select QSet button function 3.4.6 Cfg.Measure » QSet Press on QSet to select the function that you want to activate when pressing the QSet button located on the QB7 sensor. Use the keys to scroll the menu and press to select.
  • Page 61 Press on Pedal to select the function that you want to activate when stepping on the optional external pedal available for the QB7. The functions that can be assigned to the pedal are the same functions available for the QSet button (see section 3.4.6).
  • Page 62 User Manual R is the range value (place a checkmark in "Range" to select) A is the average value (place a checkmark in "Average" to select) XXXXX is the value in ASCII as seen in the unit screen The information package is closed with a null character (0). Hold last measurement 3.4.9 Cfg.Measure »...
  • Page 63 User Manual Use the keys to scroll the menu and press to select. To exit the menu press Figure 3.32: EZ-Cal calibration menu To activate EZ-Cal during the calibration procedure press in the EZ-Cal On option (first item in the EZ-Cal edit calibration menu, see figure 3.32).
  • Page 64 4 Using the Datalogger 4.1 Understanding how data is organized In order to optimize the use of the Datalogger in your QB7 you first need to understand how data is organized. Up to 8 individual files with alphanumeric names can be 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...
  • Page 65 User Manual Memory menu Memory 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 options 4.3 Creating a new file on Files and use the cursor keys to see the list of files in Press the unit.
  • Page 66 User Manual 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 any open file is automatically closed.
  • Page 67 User Manual View data in a single file 4.4.1 Memory » File » Name » View Data Press on View Data to see values stored in the file. Press to exit the file. Figure 4.6: View data within a file To move within the grid use the cursor keys and press the to go to the last column that contains data.
  • Page 68 User Manual 4.4.2 Use of the Q key in a grid Press to open the quick access menu that allows you to go directly to a position within the grid. Select the Row, Column, and Cell using the keys. Figure 4.8: Quick access options from within a grid Row: Enter a row number using the cursor keys so that when you press the grid will position itself directly on that row.
  • Page 69 User Manual 4.4.3 The Q key in a histogram Press the key in the histogram to open the quick access menu that allows you to obtain statistical information for the group of values being displayed. Figure 4.9: Quick access options within a histogram Error: Displays the number of errors and error percentage values in the batch based on the high and low alarm settings.
  • Page 70 User Manual Send data from a single file 4.4.5 Memory » Files » Name » Send on Send to values from a single file to a PC using Press Windows HyperTerminal. Files can also be sent to a printer using an RS232 connection.
  • Page 71 User Manual Erase all files 4.5.2 Memory » For All » Erase All The Erase All action permanently deletes all files stored in the unit memory and recovers 100% of the memory capacity. Before files are actually deleted a screen will be displayed asking you to confirm or to cancel this action.
  • Page 72 User Manual 4.6 Direct memory access (Mem key) From the measuring screen press to view all direct memory access options. Figure 4.13: Direct memory access options A total of 6 options are available that are grouped in two screens. To access these options use the keys.
  • Page 73 QB7. Important In order to establish a successful connection between your QB7 and your PC both DataCenter and the QB7 need to be configured with the same interface (USB, RS232 or Bluetooth).
  • Page 74 Mode to select the type of connection. USB: Select USB to connect to a PC using a USB cable (included). Requires having dmq DataCenter installed in your PC. Bluetooth: Choose Bluetooth for a wireless connection. Requires having dmq DataCenter installed in your PC.
  • Page 75 To begin the connection process place the QB7 close to the device that you will be connecting to and press on BT Search. In order for the QB7 to find a device make sure that the Bluetooth option in the device that you want to connect to is enabled. Chapter 4...

  • Page 76: Show Receiving Bluetooth Device

    User Manual Figure 4.17: Searching for Bluetooth devices Once the search has begun the unit screen will show Searching… (as seen in figure 4.17) and in approx 15 seconds the unit will show all available Bluetooth devices that are close to the unit. Use the keys to select the device that you want to connect to and press to finish.

  • Page 77: Pair Bluetooth Device

    Memory » Configure » Mode » Pair BT Press on the Pair BT option and wait for the QB7 to be found by the device that you want to pair the unit to and once the pairing process is done press to exit.

  • Page 78: Advanced Memory Config Options

    User Manual Advanced memory config options 4.8.6 Memory » Configure » Advanced This menu includes advanced datalogger configuration options. Figure 4.21: Advanced configuration options When History is checkmarked changes in calibration, target ball and any other actions that affect measurements will be saved in the unit memory.

  • Page 79: Enable Or Disable History

    User Manual Enable or disable history 4.8.8 Memory » Configure » Advanced » History When a checkmark is placed in the History option the unit saves all changes that can affect measurements (calibration, target ball, etc.). This information allows for better control over the conditions in which testing was made.

  • Page 80: Tips On How To Measure Correctly

    Accuracy The accuracy for the QB7 depends on the target ball used and the type of calibration. Smaller target balls usually result in lower accuracies and on the other hand the more calibration points that are added in the calibration process will result in higher accuracies.

  • Page 81: Accuracy

    User Manual The following table shows accuracy levels in each case: Accuracy levels for each target ball type and diameter Part # Description Simple Multipoint Calibration Calibration QBR301 Steel target ball 1,59 mm (1/16 inch) QBR302 Steel target ball 3,18 mm (1/8 inch) QBR303 Steel target ball 4,76 mm...

  • Page 82: Technical Specifications

    User Manual Technical Specifications Measuring Hall Effect through magnetic attraction Principle Probe Stainless steel probe with interchangeable titanium tips Target ball types Steel: 1,59 mm (1/16”), 3,18 mm (1/8”), and diameters 4,76 mm (3/16”), 6,35 mm (1/4”) Magnetic: 4,76 mm (3/16”), 6,35 mm (1/4”) Calibration Up to 8 points Units...
  • Page 83 User Manual Power 2 “AA” Ni-MH rechargeable cells via USB Battery life 25 hs with a full charge Operating temp. -10°C to 50°C (14°F to 122°F) Dimensions 195 x 112 x 65 mm (7.67” x 4.40” x 2.55”) Weight 830g (29.27oz) with batteries Table 1: Measuring ranges by target ball Part # Target ball type and diameter...

  • Page 84: Additional Information

    User Manual Additional information Unit maintenance The QH7 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: • Avoid contact with corrosive and abrasive substances. •...

  • Page 85: Qb7 Accessories

    User Manual QB7 accessories Part # Description QBK201 Steel target ball kit includes 1.59 mm or 1/16" (100 pcs), 3.18 mm or 1/8" (100 pcs), 4.76 mm or 3/16" (40 pcs), 6.35 mm or 1/4" (20 pcs) QBR301 1.59 mm or 1/16" steel target balls (100 pcs) QBR302 3.18 mm or 1/8"...
  • Page 86 QB7 accessories (continue) QBA400 Foot switch with cable and Lemo connector QBL701 Upgrade license (from QB7 B to QB7 E) QBK103 Upgrade calibration kit for QBL701 For more information on accessories available for your QB7 please contact Demeq at infodemeq@demeq.com Appendix...

  • Page 87: Error Messages

    User Manual Error messages Under abnormal conditions an error message may appear 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 go to the “Support” section http://www.demeq.com Figure A.2: System error message Error 1...

  • Page 88: Proper Disposal

    User Manual Proper disposal 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 89: Our Website: Www.demeq.com

    Pb, Cd e Hg indicano le sostanze presenti con valori superiori alla norma. Our website: www.demeq.com Our website is a powerful customer support tool where you will find the latest information as it relates to your QB7 including: • Manuals and brochures •...
  • Page 90 User Manual P/N QBD701-ESP Rev 1 ©2020 dmq...

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