Table of Contents
Table of Contents
Related Manuals for Extech Instruments CG204
Summary of Contents for Extech Instruments CG204
- Page 1 User's Guide Extech CG204 Coating Thickness Tester...
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Page 2: Meter Description
Introduction Congratulations on your purchase of the Extech CG204 Coating Thickness Tester. The CG204 is a portable meter designed for non-invasive coating thickness measurements. The meter uses two measurement methods: magnetic induction (for ferrous metal substrates) and eddy current (for non-ferrous metal substrates). -
Page 3: Quick Start Instructions
3. When the meter powers up, the display will prompt for a YES or NO. 4. Press the SET button for YES or the CANCEL button for NO. 5. Note that all data in all memory locations will be erased, in addition to statistics, calibration values, and alarm limits. CG204-EU-EN V2.1 3/11... -
Page 4: Programming Menu
Lock out the calibration mode Delete Zero N Clear the zero cal. data (non-ferrous) Delete Zero F Clear the zero cal. data (ferrous) NOTE: Disable the Auto Power OFF feature before lengthy programming to avoid inconvenient automatic power down while programming. CG204-EU-EN V2.1 3/11... -
Page 5: Measure Modes
(previously logged readings are not affected); in addition, statistical data will no longer update. If desired, the group data, statistical values, calibration data, and alarm limit values can be deleted using the programming menu. CG204-EU-EN V2.1 3/11... - Page 6 5. User the ARROW BUTTONS to set a High Alarm value 6. Press OK to store the limit and press BACK to return to the menu 7. Perform the same steps for the LOW LIMIT 8. Use the DELETE LIMIT parameter to clear Alarm Limit values CG204-EU-EN V2.1 3/11...
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Page 7: Measurement Considerations
False readings or outliers can then be removed (deleted) using the programming menu. 4. The final reading is derived from a statistical calculation with regard to the meter’s published accuracy specifications. CG204-EU-EN V2.1 3/11... -
Page 8: Calibration Types
Ready the supplied metal substrate samples and necessary films (supplied calibration reference films). Set the meter to: a. DIR: (MENU-OPTIONS-Working Mode-Direct) b. CONTINUOUS: (MENU-OPTIONS-Measure Mode-Continuous mode [flashing units indicator] ) c. MAX: (MENU-OPTIONS-LCD Statistic-Maximum). The meter is now ready for calibration. CG204-EU-EN V2.1 3/11... -
Page 9: Zero Calibration
1 digit change on the display. Multi-point Calibration This method requires performing two or more sequential single point calibrations. For best results, the expected coating thickness measurements should be within the calibration points. CG204-EU-EN V2.1 3/11... - Page 10 Xeff = (Xm - Xo) ±S NOTE: For coatings thicker than 300 μm, the influence of roughness generally is of no importance and therefore it is not necessary to apply the above calibration methods. CG204-EU-EN V2.1 3/11...
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Page 11: Statistical Terms
The meter’s display will show “FULL” (in the SINGLE measurement mode). In DIRECT mode, when the memory is full, the newest reading will replace the oldest reading and the statistics will be updated. CG204-EU-EN V2.1 3/11... -
Page 12: Error Messages
Err3: Eddy current and Magnetic induction errors Err4, 5, 6: Unused error displays Err7: Thickness error Please contact Extech Instruments if a problem exists. Maintenance Cleaning and Storage Periodically wipe the meter housing with a damp cloth and mild detergent; do not use abra- sives or solvents. -
Page 13: Specifications
The accuracy of the reference films or any reference standards should be added to measurement results. Copyright © 2010 Extech Instruments Corporation (a FLIR company) All rights reserved including the right of reproduction in whole or in part in any form.