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Electromagnetic Induction
LE-200C, LZ-200C

When an alternating current electromagnet is brought near iron, the

number of magnetic flux lines passing through the coil and the voltage

at both ends of the coil changes.

This change is read as the coating thickness.

3.Measurement Principles

3

High-Frequency Format
LH-200C, LZ-200C

When an induction coil through which a fixed high-frequency current

is passing is brought near metal, an eddy current is produced above

the metal surface. This eddy current changes depending on the

distance between the surface on the metal and the induction coil.

This change is read as the coating thickness.

i

i

D

Electromagnetic coil

Non-magnetic
coating

Iron substrate

Low frequency
power supply

Change
in current

Coating thickness D

i

i

D

Electromagnetic coil

Insulating coating

Non-ferrous matal

High frequency
power supply

Change
in current

Coating thickness D

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Содержание LE-200C

Страница 1: ...Operation Manual Model LE 200C LH 200C LZ 200C Coating Thickness Testers ...

Страница 2: ......

Страница 3: ...hickness Tester 10 1 Measurement Preparations 10 2 Calibration Preparations 13 3 Calibrating the Coating Thickness Tester 14 4 Making Measurements 18 5 Measurement Example 20 7 Using the Function Modes 22 8 Master Calibration 28 9 Notes Regarding Measurement and Handling 30 Battery Replacement 31 10 Using the Soft Case 32 Contents ...

Страница 4: ...e LZ 200C is a dual type non destructive thickness tester using electromagnetic conduction and Eddy current methods which can measure various coatings on iron and non conductive substrates quickly and accurately ...

Страница 5: ...ms on iron and steel Using magnetic induction method and a built in printer the LE 200C thickness tester can calculate average standard deviation maximum value read minimum value read and number of samples taken with the push of a single button ...

Страница 6: ...ductive films on non ferrous metals The LH 200C thickness tester measures with Eddy current and is equipped with a built in printer Pushing a single button will calculate maximum value read minimum value read and number of samples taken ...

Страница 7: ...arning mark if measured coating thickness values fall outside of a present pre set range low and upper limit 1 Coatings Measured Substrate Paint Chrome Plastic Tin Lacquer Copper Resin Aluminum Rubber Enamel Oxidation Lining Zinc Others Iron Steel The LE 200C LH 200C LZ 200C is a coating thickness tester with built in printer which features both electromagnetic and high frequency coating thickness...

Страница 8: ...solution 0 1µm less than 100µm 1µm 1µm 100µmor greater Min Measurement Surface Area 3 x 3mm 5 x 5mm Display 16 digit dot matrix LCD Statistical Functions No of measurements number of block numbers average value standard deviation maximum value minimum value Data Memory Capacity Coating data 1 500 items No of blocks per lot 99 Printer 24 character thermal printer with 58mm paper width Power Supply ...

Страница 9: ...oil through which a fixed high frequency current is passing is brought near metal an eddy current is produced above the metal surface This eddy current changes depending on the distance between the surface on the metal and the induction coil This change is read as the coating thickness i i D Electromagnetic coil Non magnetic coating Iron substrate Low frequency power supply Change in current Coati...

Страница 10: ...ns 4 AC adapter socket Probe Socket Power Switch 1 Main Unit Main Unit Battery Compartment Printer Battery Compartment Printer Paper Compartment Printer Paper Compartment Cover Printer Paper Cutter Printer LCD Display Keyboard ...

Страница 11: ... 2 Probes 3 Accessories Iron Substrate Except LH 200C AC Adapter Printer Paper 5 Connector Connector LEP 20C LE 200C LZ 200C LHP 20C LH 200C LZ 200C Probe Adapter Calibration Foils ...

Страница 12: ...nutes with the power on The Reset Key is pressed to turn to the measurement mode Calibration Key The CAL key is pressed to perform the calibration adjustment Enter Key The Enter key is used to input numeric values when performing the DATE LOT CAL DEL and LIMIT operations This key is also used to move to the next step when using BR FR BINC and AC Paper Feed Key The Paper Feed Key is used to feed ou...

Страница 13: ... turn on the printer s power and the asterisk mark in the LCD display will change to sharp When measurements are made while this mark appears in the display measured values will be printed out Press this Key again to turn the printer off Clear Key This key is used to clear incorrectly numeric data ...

Страница 14: ...sed to input print the date Lot Key This key is used to input print the lot number Delete Key This key is pressed to erase the measurement data of incorrectly performed measurements from the data memory Block Results Key This key is pressed to perform statistical calculations for each block Final Results Key This key is pressed to obtain statistical results from measurement number N 1 to the final...

Страница 15: ...k number All Clear Key This key is pressed to clear all measurement data and comments from memory Unit Selection Key This key is used to select between µm and mils and measurement units Application Number Key This key is pressed to check and or change the number at which calibration parameters are memorized Limit Key This key is pressed to set upper and lower measurement values limits ...

Страница 16: ...ower supply socket b Running the LE 200C LH 200C LZ 200C on dry cell batteries Turn the main unit s power switch off and then insert batteries into the rear battery compartments Main Unit section 1 5V size AA alkaline batteries x 6 Printer section 1 5V size AA alkaline batteries x 4 Only use alkaline batteries c Running the LE 200C LH 200C LZ 200C on both an AC power supply and dry cell batteries ...

Страница 17: ...The probe can be easily connected to the main unit by turning it a little while softly pressing it into the probe socket on the right side of the main unit Diagram 3 When removing the probe from the main unit always be sure to grasp the metal fitting at the end of the probe cord connected to the main unit Note that the probe cannot be disconnected by pulling on the black portion of the cord Diagra...

Страница 18: ... has a clean edge and then insert the edge fully into the printer through the guide slot in the printer compartment Next press the PAPER FEED button to feed the paper out through the printer If you wish to print out measurement data or the date etc turn on the printer by lightly pressing the PRINTER ON OFF The asterisk mark in the LCD panel will switch to a sharp mark to indicate that the printer ...

Страница 19: ...plated a zero substrate 3 Although there a several different types of calibration methods calibration is performed using the zero substrate and standard sheets or samples of known thickness that can be measured most accurately Diagram 6 13 4 Using the Probe The probe features a fixed pressure type design so that a fixed load is applied to the top chip Hold the metal fitting near the surface to be ...

Страница 20: ...rforming the calibration procedure In order to obtain stable precision we recommend that you perform 10 to 20 practice measurements to calibrate the unit after turning its power on 1 The calibration Parameters application number APPL No is specified Allowable application numbers are from 1 to 4 Operation Example Set the Application Number to 4 Use the LHP 20C probe when making this setting FUNCTIO...

Страница 21: ...n some cases depending on the material being measured a numerical value quite different from the display example may be displayed However the value will be automatically set to ZERO when the ENT key is pressed for the next operation Place the 40µm calibration foil over the substrate and measure the thickness 5 times In some cases depending on the material being measured a nu merical value quite di...

Страница 22: ...lace the 100µm calibration foil on the substrate and measure it 5 items In some cases depending on the material being measured a numerical value quite different from the display example may be displayed However the value will be automatically set to ZERO when the ENT key is pressed for the next operation Use the keyboard to input the numeric value of the calibration foil thickness 0 ...

Страница 23: ...ut the numeric value for a standard sheet thickness incorrectly press the C Clear key to erase it and then input the correct value However the values cannot be cleared if the E N T key has already been pressed If the ENT key has already been pressed press the CAL key again and start the calibration procedure over from the beginning 400 Step Key Operations Display Explanation If you have made mista...

Страница 24: ...umber For example 3 It is possible to set and store 4 types of cali bration parameters in memory Select the application number calibrated for the type on material to be measured 4 Erase old data Except in cases in which you wish to continue measurements with previous data all data should be erased from memory If you do not wishtousetheprinter gotostep8 Measurement after selecting the desired appli...

Страница 25: ...d lower limit settings or lot numbers etc Example Lot number 125 8 Measurement Quickly press the probe vertically against the surface To make the next measurement move the tip of the probe 10mm or more from the measurement surface and then press it down against the surface again ...

Страница 26: ...easurement Example Probe LHP 20C Key Operations Display Printout DATE 95 10 17 100 m 50 m APPL No 1 LOT 96321 NF N 0001 83 7 m BR N 0001 0005 B INC B 02 The block number is increment automatically 20 1 2 3 4 5 6 7 Measurement ...

Страница 27: ...r measurement NF N 0006 132 m DELETE N 6 BR N 0006 0010 B INC B 03 B INC N B INC B 9 NF N 0011 58 3 m N 0013 7 4 m DELETE N NF N 0013 58 4 m BR N 0011 0015 FR N 0015 21 Block number is set as desired Key Operations Display Printout Measurement Measurement Measurement ...

Страница 28: ... Operation Example Input October 17 1995 Up to 8 digits can be input LOT Lot number This function is used to print out lot numbers numerical comments This function is used in the same way as the DATE function mode When lot numbers are changed during measurement all previous data is erased from memory and the unit begins again from measurement number 0001 Operation Example Input 6513 Up to 9 digits...

Страница 29: ...onversion This function mode is used to switch between µm and mils as the unit of measurement Operation Example 23 Key Operations Display FUNCTION KEY A C N 0001 NF FE The measurement data unit are changed to mils To return to µm units repeat the procedure to switch back to µm units Key Operations Display FUNCTION KEY mils NF FE ...

Страница 30: ... measurement begins from measurement number N 0004 24 LIMIT Upper and lower limits This function mode is used to set upper and lower limits when checking to make sure that measured coating thicknesses fall within a specified range An electronic beep will sound and an exclamation point will be printed when a measurement value falls outside the specified range Operation Example Set upper limit at 10...

Страница 31: ... B INC Block Increment The Block Increment function mode is used to move the block number to the next or another desired block number and continue measurements without obtaining the block results Operation Example Move increment the next block number from 1 to 5 25 Key Operations Display FUNCTION KEY DELETE N DELETE N 4 NF FE Printout example Key Operations Display FUNCTION KEY B INC B 01 B INC B ...

Страница 32: ...Av Standard Deviation S Maximum Value Max N No of measurements Minimum Value Min Xi Measurement Data 26 BR Block Calculation Results This function mode is used to obtain statistical calculation results for each block separately Please note that there must be measurement data for at least two measurements in a block in order to obtain statistical calculation results for that block Operation Example...

Страница 33: ...bsequent measurement The unit will move to the next measurement after the new lot number is input The next measurement will begin at N 0001 B 01 Therefore all previous data is erased from memory when the final result is obtained Please note however the upper and lower limit setting will remain To change these setting perform the limit setting procedure again Key Operations Display FUNCTION KEY The...

Страница 34: ...Press the LIMIT key If no number is displayed press the tip of the probe against the zero base so that a number is displayed 3 Press the LIMIT key 4 Point the probe up in the air and press the LIMIT key 5 Press the LIMIT key while holding the probe down against the zero base The buzzer will sound and the display will change The 0 0 value displayed will change by 0 2 Keep the probe held down agains...

Страница 35: ...29 6 This completes the master calibration operation The unit is now in the Measurement Mode and can be used to make measurements ...

Страница 36: ...completing measurement wipe any dirt from the tip of the probe using a soft cloth and benzine or alcohol 30 4 The Calibration Foils The supplied calibration foils are very important accessories which are necessary to calibrate the unit If the calibration foils become scratched or bent through use please order a new set Calibration foils can be ordered through the merchant from whom you purchased y...

Страница 37: ...ts after exiting the Sleep Mode or immediately after turning the power on will result in higher measurement precision Battery Replacement The following indicators will be displayed on the LCD panel when the main unit or printer section batteries become weak Please replace the batteries immediately when these indicators appear 1 is blinking Both the main unit and printer section batteries are weak ...

Страница 38: ...ecting the unit The unit has been designed so that the printer section can be protected by a transparent cover The unit itself is not water resistant and therefore should not be used for extended periods of time in light rain or used in heavy rain at all Diagram 5 Diagram 6 Diagram 7 Diagram 2 Diagram 1 1 Attaching the unit to the waist 2 Carrying the unit on the shoulder 3 Holding the unit in the...

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Страница 40: ...0510 MA 0301 100 ...

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