Extech Instruments CG204 Скачать руководство пользователя страница 6

CG204-EU-EN  V2.1   3/11 

c. Probe 

Used 

Select AUTO, Fe, or No Fe under PROBE USED in the OPTIONS Menu using the 
arrow buttons and the SELECT soft-key. 
In the AUTO mode, the meter automatically activates the probe measurement method 
(ferrous or non-ferrous) based on the metal substrate that is being measured. When 
the probe is placed on a magnetic substrate it will work in the magnetic induction 
mode. If the probe is placed on a non-ferrous metal it will work in the eddy current 
mode. 
In the Ferrous (Fe) Mode the Magnetic induction measurement mode is activated. 
In the Non-Ferrous (No Fe) Mode the eddy current measurement mode is activated. 

d.  Units of measure selections 

Select mm, 

μ

m, or mils under UNIT SETTING in the OPTIONS Menu using the arrow 

buttons and the SELECT soft-key (mm = millimeters; 

μ

m = micrometers; mils = 

mm*2.54/100) 

e. Backlight 

Select ON or OFF under BACKLIGHT in the OPTIONS Menu using the arrow buttons 
and the SELECT soft-key. If OFF is selected the LCD backlighting will be completely 
disabled. If ON is selected, the user can 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 using 
the arrow buttons and the SELECT soft-key. When enabled, the meter automatically 
switches OFF after 3 minutes of inactivity. When disabled, the meter will only switch 
OFF with a button press or when the battery power is weak. 

LIMIT Menu  

High and Low Alarm Limits cab be set When an Alarm Limit is reached the meter displays 
an Alarm Alert icon (

H

 for High Alarm and 

for Low Alarm). 

1.  Press the MENU button to access the programming menu 
2.  User the DOWN ARROW button to scroll down to LIMIT and press SELECT 
3.  Press SELECT again to choose LIMIT SETTING 
4.  Press SELECT again to choose HIGH LIMIT 
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 

www.burntec.com

Содержание CG204

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

Страница 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...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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...

Страница 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 ...

Страница 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...

Страница 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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