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CG204-EU-EN  V2.1   3/11 

DELETE Menu  

The DELETE menus allows for deleting current data, all data, and group data. The 
following parameters are available in the DELETE Menu: 
Delete Current data: Deletes the current reading and updates the statistics (AVG, MIN, 
MAX, etc.) 

Delete All data: Delete all reading and statistical data. 

Delete Group data: This function duplicates the “Delete all data” function with additional, 
deletions of High alarm, Low alarm, and one- and two-point calibrations. 

1. 

Press the MENU button to access the programming menu. 

2. 

User the DOWN ARROW button to scroll down to DELETE. 

3. 

Press SELECT to open the DELETE function. 

4. 

User the ARROW keys to scroll to CURRENT, ALL, or GROUP. 

5. 

Press SELECT again to choose CURRENT, ALL, or GROUP. 

6. 

The meter will prompt with an ‘are you sure?” confirmation. 

7. 

Press YES or NO as desired.  

MEASUREMENT VIEW Menu  

The Measurement View menu allows for scrolling through the readings in all of the 
groups. 

1. 

Press the MENU button to access the programming menu. 

2. 

User the DOWN ARROW button to scroll down to MEASUREMENT VIEW.  

3. 

Press SELECT to open the MEASUREMENT VIEW parameter. 

4. 

User the ARROW buttons to scroll through the stored readings.  

CALIBRATION Menu  

The Calibration menu allows the user to enable/disable the calibration utility. The 
Calibration menu also allows the user to delete Zero calibration data for both ferrous (Zero 
F) and non-ferrous (Zero N) modes. 

1. 

Press the MENU button to access the programming menu. 

2. 

User the DOWN ARROW button to scroll down to CALIBRATION.  

3. 

Press SELECT to open the CALIBRATION parameter. 

4. 

User the ARROW to scroll through the available parameters detailed below.  

 

ENABLE: Enable the calibration mode 

 

DISABLE: Disable the calibration mode. 

 

DELETE ZERO N: Delete ZERO calibration data for non-ferrous probe 

 

DELETE ZERO F Delete ZERO calibration data for ferrous probe 

Measurement Considerations 

1.  After calibration, measurements should meet the published accuracy specifications. 
2.  Strong magnetic fields can affect the readings. 
3.  When using the statistical analysis functions for obtaining a mean value, take several 

readings of the same measurement area. 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. 

www.burntec.com

Summary of Contents for CG204

Page 1: ...User s Guide Extech CG204 Coating Thickness Tester www burntec com ...

Page 2: ...2 Measurement probe 3 Backlit LCD display 4 SET OK YES MENU SELECT button 5 UP LEFT ARROW button 6 Power ON OFF button 7 CANCEL ESC NO BACK button menu mode and Backlight ON OFF normal mode 8 DOWN ARROW RIGHT button 9 ZERO calibration button Note Battery compartment on rear of meter Display Icon Description NFe Non ferrous metals Fe Ferrous metals AUTO Automatic substrate recognition F or N Calibr...

Page 3: ... the LCD AVG 250μm running average on the lower right DIR DIR mode of operation on the upper left Fe Ferrous substrate on the upper right of the LCD Experiment with the remaining reference films and the substrate before using the meter professionally Automatic Power OFF In order to conserve battery life the meter will automatically turn off after approximately 3 minutes To defeat this feature use ...

Page 4: ...No Fe Non ferrous measurement mode μm Micrometers mils Mils mm 2 54 100 Unit settings mm Millimeters ON Enables backlight operation Backlight OFF Disables backlight operation AVG Average of a series of readings MAX Lowest of a series of readings MIN Highest of a series of readings LCD Statistics SDEV Standard deviation of a series Enable Allows auto power off to operate OPTIONS Auto Power OFF Disa...

Page 5: ...OUS measurement mode the meter displays a running average of readings as they are taken Note that the audible measurement beep is not active in this mode In the SINGLE measurement mode measurements are taken one at a time Single mode measurement readings are accompanied by an audible tone b Working Modes Select DIRECT or GROUP 1 2 3 or 4 under WORKING MODES in the OPTIONS Menu using the arrow butt...

Page 6: ...n turn the light on or off using the backlight button CANCEL button f LCD Statistics Select AVERAGE MINIMUM MAXIMUM or SDEV Standard Deviation under LCD STATISTICS in the OPTIONS Menu using the arrow buttons and the SELECT soft key This selection determines which statistic is shown as default on the LCD display g Auto Power OFF Select ENABLE or DISABLE under AUTO POWER OFF in the OPTIONS Menu usin...

Page 7: ...to open the MEASUREMENT VIEW parameter 4 User the ARROW buttons to scroll through the stored readings CALIBRATION Menu The Calibration menu allows the user to enable disable the calibration utility The Calibration menu also allows the user to delete Zero calibration data for both ferrous Zero F and non ferrous Zero N modes 1 Press the MENU button to access the programming menu 2 User the DOWN ARRO...

Page 8: ...urvature radius Substrate material properties Substrate thickness Size of measurement area The point at which the calibration is made on the calibration sample must always be identical with the point of measurement on the product itself especially in the case of corners and edges of small parts To achieve the highest measurement accuracy perform several calibrations in succession for zero values a...

Page 9: ... off the substrate d Press MENU and then scroll down to Calibration e Press Select to highlight the Enable function and then press Select f Press Esc and the meter will enter the calibration mode g Adjust the reading to match the known value of the reference film using the and buttons h Turn the meter OFF to exit and save the calibration data 3 The meter is now calibrated to the base material and ...

Page 10: ...ice to be tested 2 Take approx 10 readings on the uncoated shot blasted sample to produce the mean value Xo 3 Take an additional 10 readings on the coated shot blasted test sample to produce the mean value Xm 4 The difference between the two mean values is the mean coating thickness Xeff over the peaks The greater standard deviation S of the two values Xm and Xo should also be taken into considera...

Page 11: ...es how the sample value is distributed around the sample mean The standard deviation of a set of numbers is the root mean square of the variance S 2 The variance of a list is the square of the standard deviation of the list that is the average of the squares of the deviations of the numbers in the list from their mean divided by the number of readings 1 Variance S 2 1 2 n x x Standard deviation S ...

Page 12: ...y wipe the meter housing with a damp cloth and mild detergent do not use abra sives or solvents If the meter is not to be used for 60 days or more remove the batteries and store them separately Battery Replacement Installation instructions 1 Remove the Phillips head screw that secures the rear battery door 2 Open the battery compartment 3 Replace install the two 1 5V AAA batteries 4 Secure the bat...

Page 13: ...ure radius 1 5mm 3mm Diameter of Min area 7mm 5mm Basic critical thickness 0 5mm 0 3mm Industrial standards Conforms to GB T 4956 1985 GB T 4957 1985 JB T 8393 1996 JJG 889 95 and JJG 818 93 Operating Temperature 0 C 40 C 32 F 104 F Operating Relative Humidity R H 20 90 Relative Humidity Dimensions 110 x 50 x 23mm 4 3 x 2 0 x 1 0 Weight 100g 3 9 oz 1 Accuracy statement applies on a flat surface wi...

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