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CTG-2 with WinCTG2 Software Version 1.7

CONCRETE THICKNESS GAUGE (CTG-2)

System Reference Manual

PATENT PENDING

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Summary of Contents for CTG-2

Page 1: ...CTG 2 with WinCTG2 Software Version 1 7 CONCRETE THICKNESS GAUGE CTG 2 System Reference Manual PATENT PENDING...

Page 2: ...y Olson Instruments Inc Further this manual and the accompanying software may not be used by any party other than the original purchaser without prior approval of Olson Instruments Inc Warranty See Sa...

Page 3: ...Velocity Calibration 13 4 3 IE Data Acquisition with Known Thickness Velocity Calibration 21 4 4 View Mode 23 4 5 Thick Concrete Testing 24 4 6 Units 25 4 7 Volume 25 4 8 Save Parameters 25 4 9 Reset...

Page 4: ...al cracking damage This unit can also be used to determine relative concrete quality by measuring concrete compression wave velocity for test cylinders and other samples with known thicknesses The dev...

Page 5: ...elow Note that the solenoid impactor and displacement transducer are built into the IE head The test head is pressed against the top of the tested member and held while tests are performed at each tes...

Page 6: ...The test head includes an automated solenoid impactor to create the impact and a displacement transducer sensor to receive the signal Includes four CR123A 3V lithium photo batteries Phone Phone Phone...

Page 7: ...accurate readings the batteries must be replaced at this time When light fails to illuminate either green or red the batteries have lost power and MUST be replaced Location of the Batteries the four C...

Page 8: ...ies following the polarity diagram inside the handle as shown in the pictures below 5 Replace the battery cover and screws 2 3 Hardware Setup 1 Connect the Phone Plug to Phone Plug Cable to the IE Tes...

Page 9: ...crophone icon The other is identified with a headset icon Select the appropriate jack Tablets will normally require the microphone jack Note the CTG 2 unit will NOT work with tablets that have only a...

Page 10: ...green light is illuminated the IE test head is powered up and ready to collect data 5 The picture below shows the complete CTG 2 system ready to acquire data In this case an 8 tablet is being used We...

Page 11: ...ing a Setup Wizard Select Next as appropriate Select Yes when prompted to confirm changes Select Close to exit The default location for the software installation is C Olson Instruments WinCTG2 unless...

Page 12: ...Select WinCTG2 Setup 7 Select Uninstall 8 Select Yes to confirm uninstallation 9 Select Yes to confirm changes The uninstall process will begin automatically removing all installed components includin...

Page 13: ...anel the Filter panel and the Waveform Data panel Each panel except the waveform data panel is collapsible if not needed especially during the data acquisition process to enlarge the waveform data pan...

Page 14: ...hardware connected and turned on as described in Section 2 0 and select the WinCTG2 shortcut on the desktop The software will open as shown in Figure 2 below Within the Waveform Data Panel the top pl...

Page 15: ...t value of 6 inches will be used for Expected Concrete Thickness This value is used to limit the amount of data analyzed and presented by the software so it is important to alter this number as approp...

Page 16: ...shown in Figure 3 below Enter the directory where the data is to be saved along with an alphabetical prefix and a numerical suffix The alphabetical prefix will remain fixed and the numerical suffix wi...

Page 17: ...ing up Filenames 5 After selecting the Start option on the Toolbar the system is now waiting to receive data in the form of an impact as reported in the Status field which is currently in Ready to Tes...

Page 18: ...software will display the data on the screen as shown in Figure 6 below The program is now waiting for you to either accept or reject the data as reported in the Status field which is currently in Acc...

Page 19: ...the data The following Figures 7A through 7D demonstrate both acceptable and unacceptable data It is recommended to verify repeatability of results by taking at least two tests at the same location T...

Page 20: ...19 Figure 7A Example of Good Data and a Single Prominent Peak in the Frequency Spectrum Figure 7B Example of Poor Data Noise and many Peaks Hash in the Frequency Spectrum...

Page 21: ...gure 7C Example of Nonexistent Data and Noise Peaks in the Frequency Spectrum Figure 7D Example of Good Data and Multiple Peaks in the Frequency Spectrum that might Indicate the Presence of Multiple C...

Page 22: ...Thickness Velocity Calibration The CTG 2 measures thicknesses of concrete by measuring the time required for an echo to bounce off the back side of the concrete member being tested The thickness if t...

Page 23: ...12 from the known thickness location press the test head firmly against the test surface and press the trigger button on the underside of the handle The solenoid in the test head will immediately fire...

Page 24: ...report that it is in Ready to Test mode The system is now waiting to receive data in the form of an impact With the IE head powered up and the green light on the top of the handle illuminated press t...

Page 25: ...the testing using one of the three test mode options Setup Filename Start or View With the IE head powered up and the green light on the top of the handle illuminated press the unit firmly against th...

Page 26: ...eld found on the Toolbar as shown in Figure 12 Below Figure 12 Volume 4 8 Save Parameters The parameters such as Expected Concrete Thickness and Velocity can be saved by selecting the Save Parameters...

Page 27: ...t the field to ensure that the value is accepted use tab to exit or click on another field Solenoid Positioning The automatic solenoid impactor must be positioned over an even concrete surface If the...

Page 28: ...the corrugations Calibration of the CTG 2 on slab on metal deck pan deck concrete The CTG 2 has the greatest accuracy typically 2 if a test at a known thickness location is conducted and used to cali...

Page 29: ...ork your way up in intervals of 10 if necessary 4 A noisy signal without a prominent peak in the Frequency Spectrum may indicate that the concrete is too thin to test less than 3 2 inches Verify that...

Page 30: ...This section includes instructions for data analysis with the WinCTG2 Software 5 1 Start Program Select the WinCTG2 shortcut on the desktop The software will open as shown in Figure 15 below Figure 15...

Page 31: ...f 4th order is used The type of pass band can be selected in the Filter Panel The default pass band filter for IE data is Highpass which is the recommended filter for most IE situations The frequencie...

Page 32: ...ater than 12 inches a highpass filter of 1000 Hz is appropriate Figure 17 Filter Panel 5 4 Windowing Interactive time domain windowing is implemented in this software Two cursors left blue and right r...

Page 33: ...32 Figure 18A Time domain and Spectrum before Windowing is Applied Figure 18B Time domain and Spectrum after Windowing is Applied...

Page 34: ...19 Concrete Velocity 5 6 Open Next Data File If the data filenames have a fixed alphabetical prefix and are numbered sequentially in the suffix it is possible to scroll quickly through the data Note t...

Page 35: ...e Image As and use the Save as Type dropdown menu to save as an emf png gif jpg tif or bmp for later use 6 2 Export Test Results to Comma Separated Format The WinCTG2 software allows the export of tes...

Page 36: ...so when importing the data into a spreadsheet be sure to click on the commas as delimiters checkboxes Figure 22 Results Exported to Excel Spreadsheet 6 3 Export Raw Data to Comma Separated Format The...

Page 37: ...GUAGE OPTIONS The WinCTG2 Software can be operated in several different languages To browse for different languages select the Language option located at the far right of the Main Menu Figure 23 Langu...

Page 38: ...he unit off when not in use This will prolong battery life 4 The CTG 2 should be kept clean and free of mud and dirt as mud can interfere with the operation of the automatic solenoid impactor and smal...

Page 39: ...e inexpensive tablets that support a microphone might not have an adequate microphone The following is a list of tablet models that have been tested at our facility and are known to work with the CTG...

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