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CG204-EU-EN  V2.1   3/11 

STATISTICAL VIEWS Menu  

1.  Press the MENU button to access the programming menu 
2.  Press SELECT to choose STATISTCAL VIEW 
3.  Use the UP and DOWN buttons to scroll through the AVERAGE, MINIMUM, 

MAXIMUM, NUMBER OF DATA, and SDEV (Standard Deviation) values for the stored 
readings. 

4.  ‘NO DATA’ will display if no readings are available for the meter to analyze. Stored 

readings will clear when the meter powers down unless the GROUP feature is used 
(refer to GROUP function explanation later in this section).  

5.  Press the BACK and then the ESC soft-keys to return to the normal operating mode. 

OPTIONS Menu  

1.  Press the MENU button to access the programming menu 
2.  Use the DOWN ARROW button to scroll down to OPTIONS 
3.  Press SELECT to choose OPTIONS 
4.  Use the UP and DOWN buttons to scroll to the MEASURE MODE, WORKING MODE, 

PROBE USED, UNIT SETTINGS, BACKLIGHT, LCD STATISTICS, AND AUTO 
POWER OFF parameters. Use the SELECT soft-key to select the desired parameter. 
Each parameter is detailed below: 

a. Measure 

Modes 

Select CONTINUOUS or SINGLE under MEASURE MODES in the OPTIONS Menu 
using the arrow buttons and the SELECT soft-key. 
In the CONTINUOUS 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 buttons and the SELECT soft-key. 
In DIRECT mode, individual readings are logged to memory. When power is switched 
off or if the meter is switched to GROUP mode, all DIRECT readings will be cleared. 
However, the statistical analysis data will remain. The statistical analysis utility can 
evaluate up to 80 readings. When the memory is filled, new readings will replace old 
readings. Lastly, this mode has its own calibration and alarm limit values. 
In GROUP mode each group memory can store a maximum of 80 readings and 5 
statistical values. Calibration and alarm limit values can be individually set and stored 
for each group. When the memory is filled, measurements will continue to be taken but 
readings will no longer log (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. 

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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