CM-208 CM-208Z Industrial-818 User Manual Coating Thickness Gauge V1.
Table of Contents 1. Introductions- - - - - - - - - - - - - - - - - - - - 1 2. 7 Probe Mode- - - - - - - - - - - - - - - - - - - - - - - - - - - 12 1. 1 Features- - - - - - - - - - - - - - - - - - - - 1 2. 8 Storage- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 12 1. 2 Application- - - - - - - - - - - - - - - - - - 1 2. 9 Recall and Delete Readings- - - - - - - - - - - - - - 12 1. 3 Principle of Measurement- - - - - - - 2 2. 10 High and Low Limit Alarm- - - - - - - - - - - - - - 13 1.
1. Introductions This compact gauge can be used for non-destructive coating thickness measurement of non-magnetic coatings, e.g. paint, enamel, chrome on steel, and insulating coatings, e.g. paint and anodizing coatings on non-ferrous metals. 1. 1 Features 128* 128 dot matrix LCD display, standard menu operations; Two measure mode: single and continuous; Two group mode:direct(DIR) and general(GEN), readings will be lost when power off in direct mode, and not be lost in general mode.
1.3 Principle of Measurement The coating thickness gauge work either on the magnetic induction principle or on the eddy current principle, depending on the type of probe used. This gauge has internal F probe and N probe. F probe work on magnetic induction principle and should be used for non-magnetic coatings such as aluminium, chrome, copper, zinc, paint and varnish,enamel, rubber etc.
1. 5 View 1.5.1 Applied to P1 and P1S 2 1. Current work group( DIR and 1 GENn,n=1-4) 4 2. High and low limit alarm 3. Probe mode:AUTO, MAG, EDDY 5 4. Measuring readings display 5 . Statistics display 6 6. Auto-power off indication 7. USB connecting indication 7 8. Reserved 9. Unit(um、mm、mils) 11 10. Low battery indication 11. CAL-Calibration key 12 12. POWER on/off key 16 13. ZERO calibration key 14. UP key 17 15. DOWN key 16. LEFT key(menu、select、sure) 18 17.
1.5.2 Applied to P2 1. Current work group( DIR and GENn,n=1-4) 1 2. High and low limit alarm 3. Probe mode:AUTO, MAG, EDDY 4 4. Measuring readings display 5 5. Statistics display 6. Auto-power off indication 6 7. USB connecting indication 8. Reserved 7 9. Unit(um、mm、mils) 10. Low battery indication 11. CAL-Calibration key 11 12. POWER on/off key 12 13. ZERO calibration key 16 14. UP key 15. DOWN key 17 16. LEFT key(menu、select、sure) 17. RIGHT key(cancel, exit, back, 18 backlight switch) 18. Probe 20 19.
1.5.3 Applied to P3 and P4 1 1. Current work group( DIR and GENn,n=1-4) 2. High and low limit alarm 4 3. Probe mode:AUTO, MAG, EDDY 4. Measuring readings display 5 5. Statistics display 6. Auto-power off indication 6 7. USB connecting indication 8. Reserved 7 9. Unit(um、mm、mils) 10. Low battery indication 12 11. Reserved 16 12. POWER on/off key 15 13. Reserved 14. UP key(or delete function) 15. DOWN key(or zero calibration) 16. LEFT key(menu、select、sure) 18 17.
1. 6 Specifications for P1 and P2 P1 Product Code P1S Probe F P2 Probe N Measurin g principle Mag n e ti c i n d u c ti on Measuring range 0 to 2000um (0 to 78.7mils) 0 to 2000um (0 to 78.7mils) 0 to 5000um (0 to 196.8mils) 0 to 3000um (0 to 118.1mils) Accuracy ±( 2. 5%+ 1u m) ±(2% + 1u m) ±( 2 %+ 1u m) ±( 2.5 %+ 0.0 39 mils) ±( 2%+0.039mils) ±( 2% +0. 03 9 mils) ±(2% + 1u m) ±( 2%+0.039mils) 0um~99.9um(0.1um) 100um~999um(1um) >1000um(0.01mm) 0um~99.9um(0.1um) 100um~999um(1um) >1000um(0.
1. 7 Specifications for P3 and P4 P3 Product Code P4 Probe Probe F Measurin g principle Magnetic induction Measuring range 0 to 1500um (0 to 59mils) ±( 2 %+ 1u m) ±( 2% +0. 03 9 mils) ±(2% + 1u m) ±( 2%+0.039mils) 0um~99.9um(0.1um) 100um~999um(1um) >1000um(0.01mm) 0um~99.9um(0.1um) 100um~999um(1um) >1000um(0.01mm) Accuracy Resol ution Probe N Probe F Probe N Eddy Currents Magnetic induction Eddy Currents 0 to 1500um (0 to 59mils) 0 to 500um (0 to 19.68mils) 0 to 500um (0 to 19.
2. Use the Gauge If you use the gauge for the first time, please read the chapter 3(factors of affecting measurement accuracy). 2. 1 Replacing the Battery Place the gauge upside down on a suitable surface, remove the screws from the battery compartment with a crosstip screwdriver, raise the lid of the compartment, remove battery, insert new battery according to the positive and negative poles and close the lid and fasten with screws. 2.2 Basic Measurement Step Step 1. Prepare the sample to be measured.
2. 3 Key and User Interface The gauge have a standard user interface, user can use it easily. Left Key a. To enter into menu mode from measure mode; Delete Data Recall Browse Stat. Options b. Left button operations in menu mode(Including Limit Root Caption Sub-menu Active Item DIR AUTO 16 102 N um Menu Item 101um Mean 99um Min Max 103um Calibration “Sure”, “Select”, “Delete”); Right Button Right Key Enter Exit a.
2. 4 Measure Mode Single measure mode - Place the probe on sample vertically and rapidly, and after one beep, raise it rapidly. Continuous measure mode - Place the probe on sample, and don’ t raise the probe, the measurement will be done continuously in a certain cycle. 2. 5 Group Mode Direct Group(DIR)-Be intended for quick occasional readings. In this mode, data are temporarily stored in RAM, it will be lost when power off. The readings and statistics can be shown on the LCD.
Method of switch group mode a. Press “Left Key” once to enter into menu mode(”Root” directory); b. Press “Up Key” or “Down Key” to activate “Options” item, and press “Left Key” once to enter in; c. Press “Up Key” or “Down Key” to activate ”Group Mode” item, and press “Left Key” once to enter in; d. Press “Up Key” or “Down Key” to activate your intended item, and press “Left Key” once to select the item and go back. Press “ZERO Key” to back measure mode. 2.
2.7 Probe Mode There are three probe modes: AUTO, MAG and EDDY. In AUTO mode, the probe can automatically determine the type of substrate measured. In MAG mode, the probe can only measure on magnetic substrates. In EDDY mode, the probe can only measure on non-ferrous metal substrates. When a magnetic substrate detected, an “F” will be shown on the right of readings, and when a non-ferrous metal detected, a “N” will be shown. User can switch probe mode as below. a.
b. Press “Up Key” or “Down Key” to activate “Delete Data” item, and press “Left Key” once to enter in; c. Press “Up Key” or “Down Key” to activate ”Current Data” item, and press “Left Key” once. A dialog box will be displayed. d. Press “Left Key” once to confirm the selection and go back, or “Right Key” to cancel and back. Press “ZERO Key” to back measure mode. Delete whole group readings(Tips: If in measure mode, hold the “UP Key” by one beep) a.
b. Press “Up Key” or “Down Key” to activate “Limit” item, and press “Left Key” once to enter in; c. Press “Up Key” or “Down Key” to activate “Settings” item, and press “Left Key” once to enter in; d. Press “Up Key” or “Down Key” to activate your intended item, and press “Left Key” once to enter in; e. Press “Up Key” or “Down Key” to increase or decrease the limit value. If hold the key, the limit value will be increased or decreased continuously. f.
a. Press “Left Key” once to enter into menu mode(”Root” directory); b. Press “Up Key” or “Down Key” to activate “Options” item, and press “Left Key” once to enter in; c. Press “Up Key” or “Down Key” to activate ”Speed” item, and press “Left Key” once to enter in; d. Press “Up Key” or “Down Key” to select intended item. Press “Left Key” to confirm it. 2.13 Data Download User can use the USB cable to connect the gauge with PC and download stored readings .
immediately. The final reading derives from the statistical calculation and from the guaranteed tolerance levels of the gauge. T(coating thickness)=M(mean value)±S(standard deviation)±A(measuring accuracy). 3. Factors of Affecting Measurement Accuracy User needs to know the factors of affecting measurement accuracy before using the gauge. The factors are listed as below.
The measured sample must correspond to the calibration sample in substrate material properties, curvature radius, or the more closely the measured sample matches the calibration sample, the more accurate the measuring. In addition, curvature radius should meet the minimum value as specified in chapter 1.6. The minimum substrate thickness and the minimum measuring areas as specified in chapter 1.6 should be taken into account.
Tips: For P3 or P4, press and hold “DOWN Key” to start zero calibration, and press again to exit 4.1 Zero Calibration a. Press and hold “ZERO Key” until hearing “beep...beep beep...”. The LCD will flash “ZERO” symbol. b. Place the probe on uncoated sample and raise it after one beep. Tips: For P3 or P4, user needs to access the c. Repeat step b and c several times to obtain mean value. menu to enable or disable multi-point cal: d. Finished. Press “ZERO Key” to exit calibration mode.
4.3 Shot-blasted Surfaces The physical nature of shot-blasted surfaces results in coating thickness readings that are too high. The mean thickness over the peaks can be determined as follows. Method one: a. The gauge should be calibrated according to 4.2(one or more points calibration). Use a smooth calibration sample with the same curvature radius and the same substrate as the later measuring sample. b. Take approx. 10 readings on the uncoated, shot-blasted sample to produce the mean value A. c.
5. Trouble Shooting If the instrument is no response and can’ t be turned on, you can remove the battery, and a few minutes later, reinstall the battery, and try again. If the problem persists, please contact with your supplier for help. The following errors can be remedied by system reset: -Illogical readings -Several of the keys don’ t work Reset to factory settings(For P1, P2): 1. Power off the gauge. 2. Press and hold “ZERO Key” and then power on the gauge. 3.
