Related Manuals for DMQ QS3 Series
Summary of Contents for DMQ QS3 Series
- Page 2 P/N: QSD 301 – ENG – Rev 3 – 2012...
- Page 3 Chapter 1 First Steps Know the QS5 1.1.1 Front panel 1.1.2 Connectors Install or replace batteries Connecting the transducer The “Q” key Display illumination and contrast 1.5.1 Display backlight illumination 1.5.2 Display contrast Locking and unlocking the keypad Chapter 2 Measuring with the QS3 Measuring screen Keys in the measuring screen...
- Page 4 General configuration options 3.6.1 Select language 3.6.2 Set keypad sensitivity 3.6.3 Adjust gain 3.6.4 Set auto-off time 3.6.5 Adjust display contrast 3.6.6 Beep activation 3.6.7 Hold last value 3.6.8 Unit information Tips on how to measure correctly Technical specifications Additional information Unit maintenance QS3 accessories Error messages...
- Page 5 And thank you for purchasing a QS3 ultrasonic wall thickness gauge. 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 6 The information included in this manual applies to all QS3 series ultrasonic wall thickness gauges including models B and DL. 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 QS3 gauges.
- Page 7 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 on ultrasonic testing. Additional information can also be found on the internet and through local government agencies as well as in technical institutes.
- Page 8 In ultrasonic testing information is obtained from measuring sound waves. Users must be very careful when making assumptions in regards to the entire test piece condition when there are areas that have not been inspected. In large and massive test pieces it would be practically impossible to test the entire piece and therefore conclusions for the whole piece based solely on the areas that have actually been inspected, should only be done by experienced operators.
- Page 9 untreated steel, but the sound velocities vary significantly. Instruments should be calibrated before and after testing to minimize errors. Transducers must be in good condition and show no visible signs of excessive wear or defects on their surface. Badly worn transducers can provide erroneous measurements.
- Page 10 QS3 series thickness gauges are for industrial use only and cannot be used in medical applications. The QS3 operates on two AA size batteries. We strongly recommend that you use only top brand name alkaline batteries. Disposal of your QS3 gauge and its components must be done in compliance with all applicable regulations.
- Page 11 Figure 1.1: Front of the unit Graphic LCD display with LED backlight illumination Move Left key Move Up key Menu key / Enter and exit measure screen / Exit and return to menus (Home) Enter key / Edit values on the measure screen (Edit) Move Down key / Quick access to memory menu screen options (Mem) Chapter 1...
- Page 12 Change backlight illumination key (On, Off, Auto) key: Power On and Shutdown (touch and hold for 2 seconds) / Make quick and short touches to activate special functions and features Calibration disk 10. Horizontal scrolling center point (lock and unlock keypad on measure screen) 11.
- Page 13 The QS3 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 14 Figure 1.4: Replace / Insert batteries Notes Use new alkaline top brand batteries only. 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 15 Important Do not remove batteries while the unit is powered as this may affect the Data Logger (See Apendix: “Additional information, Error Messages”) The QS3 has two type Lemo “00” connectors located on top of the unit. Because this is the standard for most dual crystal probes, you could basically connect any probe to your QS3.
- Page 16 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. With the unit on, making short touches to the will activate special functions described in each chapter of this manual.
- Page 17 When you touch the white dot located in the center of the vertical scrolling bar between the keys 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 18 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 screen. Chapter 1...
- Page 19 The QS3 measuring screen is represented below: Figure 2.1: Measuring screen Icon indicating that a value was stored Locked keypad icon indicator (Page 7) Inactive calibration disk indicator (Page 12) Coupling indicator Measuring unit Battery level indicator Minimum measured value (set to zero touching Thickness value in the selected unit Material velocity Chapter 1...
- Page 20 Keypad functionality: : Touch to exit the measuring screen and enter the main menu. : Touch to manually store the measurement in the memory. : Touch to activate the Select / Edit mode. Flashing arrows will appear over the fields of material velocity and measurement. ...
- Page 21 Tips Touch the when editing velocity and a screen will appear with the most commonly used materials and their velocities. Use the cursor keys to scroll the list and touch to select or touch to exit and return to the edit velocity field. When a measurement was taken and the velocity is changed, a new measurement is automatically displayed that reflects the change in velocity.
- Page 22 The QS3 uses a zero (delay) calibration procedure that is activated by simply coupling the transducer over the calibration disk located in front of the unit. Figure 2.4: Zero calibration procedure When this automatic procedure ends, the unit is calibrated to measure steel which is the default material velocity used in this calibration method.
- Page 23 If you know the velocity of the material you will be measuring you can manually enter the velocity by doing the following: Go to the measuring screen. Touch to enter the Select / Edit mode. Touch to select the velocity field. ...
- Page 24 Use the cursors to set the thickness value and touch confirm or touch to cancel. When editing the thickness value observe that the velocity will change accordingly. Note When changing the material velocity using a known thickness value the unit must have already been calibrated for the transducer being used (Page 12).
- Page 25 The instructions explained in this chapter apply to all of the menus in the unit. To scroll QS3 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 below.
- Page 26 The main menu is the first list of options that appears when you exit the measure screen and it includes the most important settings. Touch from the measuring screen to access this menu. Figure 3.3: Main menu All available main menu options are explained herein: Touch on Unit in the main menu to open the list of available units.
- Page 27 The QS3 has a low alarm that alerts the operator when a measurement falls below the value set for the low alarm. on Alarms to open the alarm menu options. Touch Touch on Low to open the numbers editor where you can set the low alarm value using the cursor keys.
- Page 28 Select Memory from the main menu to view all memory menu options. The options in this menu will be different depending on your QS3 model. In the QS3 B stored values can be viewed on the unit display but they cannot be sent to a PC or a printer. Values can only be sent to a PC via USB with the QS3 DL using DataCenter software.
- Page 29 DataCenter. To view their contents simply double click on each file. For additional information on dmq DataCenter software refer to the manual included in the CD that you received with your QS3 or download the manual at http://www.demeq.com/Download.html Note Connection to a PC is only posible with a QS3 DL.
- Page 30 The Erase 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 31 on Capture to select the mode in Touch which values will be stored in the Datalogger. Figure 3.11: Memory capture modes menu The QS3 has the following capture modes: Manual: Touch the key to store values. Auto: When the transducer is coupled measurements are continuously stored.
- Page 32 Touch on the Configure option located on the main menu to open the general configuration options menu for the QS3 that includes measurement related settings such as Gain and other more general settings such as Keypad Sensitivity and AutoOff time. Figure 3.13: Unit configure menu on Language (which is also identified with a flag) to view Touch...
- Page 33 This option allows you to set the keypad sensitivity. The higher the number is that you set here, the more sensitive the keypad will be. 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.
- Page 34 Touch on Gain to change the gain level (signal sensitivity). The higher the gain the more sensitive the unit will be making it easier to measure lower thickness values. But excessive gain can also cause erroneous measurements. The gain is typically adjusted when changing transducers. Touch the keys to adjust the gain value and touch...
- Page 35 Use this setting to adjust the screen contrast making it lighter or darker where 1 is the lightest and 32 is the darkest. Touch on Contrast and use the keys to change the contrast on your screen. Touch to save or touch to exit without making changes.
- Page 36 When you enable the Hold last option the last measured value will be displayed on the unit screen even when the transducer is not coupled. When hold last is disabled and the transducer is not coupled the unit display will read "--.--". Touch to enable or disable this option.
- Page 37 Do not measure outside the thickness range specified for the transducer that you are using. Use just enough coupling gel to ensure stable measurements. Avoid using excessive coupling gel as it may be added to the thickness value of the actual test piece being measured. Always do the zero calibration using the calibration disk located in the front of the unit particularly when changing transducers.
- Page 38 Measuring principal Pulse-Echo Measuring range 0.6 mm to 500 mm (Pulse-Echo) Transducer frequency 2 to 10 MHz Measuring frequency 4 Hz Pulser tension Adjustable 20 V to 210 V V-Path Automatic correction Units Millimeters and Inches Resolution 0.01 mm from 0.60 to 99.99 mm 0.1 mm from 100.0 mm and above 0.001 in from 0.040 to 9.999 0.01 in from 10.00 in and above...
- Page 39 The QS3 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. Do not clean the unit with solvents. ...
- Page 40 No. Description QSM 300 Small high impact carrying case QSS 201 2Mhz transducer – 15 mm diameter QSS 501 5Mhz standard transducer – 10 mm diameter QSS 701 7Mhz transducer – 5 mm diameter QSR 161 6 step calibration block (mm)
- Page 41 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 42 Our website is a powerful customer support tool where you will find the latest information as it relates to your QS3 including: Application notes Manuals and brochures New accessories Our service department is committed to providing prompt and courteous service.
- Page 43 P/N QSD – 501 – ENG – Rev 3-2012 ©2012 dmq Capitulo 4...
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