300j series coating thickness testers le-300j/lh … · 300j series coating thickness testers...

300J Series Coating Thickness TestersLE-300J/LH-300J/LZ-300J

Operating Manual

Coating Thickness Tester Safety Precautions

• Be sure to carefully follow all safety precautions.

Carefully read operating manual.

• Do not use the unit if it is not functioning property.

Immediately contact our service representative if the unit malfunctions or does not operate properly.

• Measuring of Warning Indications.

The symbols indicated below are used in the operating manual and on the unit itself in order to prevent accidents due to misuse of the

product.

These symbols have the following meanings:

This symbol indicates information important for the understand in order to safety operate the product.Caution

1. Measuring Principles and Characteristics ........................................................................... 4

2. Instrument view ................................................................................................................... 6

3. Display ................................................................................................................................. 8

4. Keypad Fanctions ................................................................................................................ 9

5. Specifications ...................................................................................................................... 11

6. Preparations for Operation .................................................................................................. 12

7. Measuring Procedure .......................................................................................................... 20

8. Functions ............................................................................................................................. 21

9. Easy Calibration (For Eddy Current method only) ............................................................... 23

10.Notes for Measuring and Handling ...................................................................................... 24

Contents

4

• The model LE-300J electromagnetic coating thickness tester is designed to measure the thickness of non-magnetic coat-ings such as paint or plating on magnetic metal substrates (iron or steel).

• The model LH-300J Eddy Current coating thickness tester is designed to measure the thickness of insulating coatings suchas alumite or paint on non-magnetic metal substrates (such as aluminum or copper, etc.).

• The model LZ-300J dual-type coating thickness tester is designed to measure the thickness of either non-magnetic orinsulating coatings on either magnetic or non-magnetic metal substrates.

Applicable Coatings

• A Beryllium-copper calibration foil is required in order to

measure the thickness of plating coatings.

Model LZ-300JLE-300J LH-300J

Applicable Coatings

Substrate Iron Steel Aluminum, Copper, Brass, etc.

Paint PlasticLacquer ResinRubber EnamelLining ZincChrome TinCopper AluminumOther

Paint AlumiteRubber PlasticEnamel LacquerResin Other

1. Measuring Principles and Characteristics

5

• LH-300J

(Eddy Current measurement method: For measuringthe thickness of insulating coatings on non-magneticmetal substrates)

An eddy current is produced in the surface of a metal whena coil through which a current of fixed frequency is broughtnear the metal. This eddy current and the voltage at theends of the coil change in proportion to the distance be-tween the coil and the metal surface. This change can bedetermined from the current value and this is used to cal-culate the thickness of the coating.

• LE-300J

(Electromagnetic measurement method : For measur-ing the thickness of non-magnetic coatings on mag-netic metal substrates)

When an alternating current electromagnet is brought neariron (or other magnetic metal) the number of magneticflux lines passing through the coil changes in proportionto the distance, thereby causing a change in the voltageat the ends of the coil. This change in voltage is deter-mined from the current value and this is used to computethe thickness of the coating.

• LZ-300J(Dual Electromagnetic and Eddy Current Type)

The model LZ-300J is a dual type coating thickness tester which features both the electromagnetic and Eddy Currentmeasurement methods.

Low-FrequencyPower Supply

Non-Magnetic CoatingIron • Steel

Thickness D

Electromagnetic coil

CurrentChange i

Induction coil

Insulating CoatingNon-Magnetic Metal

Thickness D

High-FrequencyPower Supply

CurrentChange i

i

6

2. Instrument view

Front Panel Rear Panel

Main part Probe

Top View

Fe Probe (Black) Electromagnetic (LEP-J)

NFe Probe (Gray) Eddy Current (LHP-J)

Probe Connector

Display

KeyboardBattery Box

Connector

Connector

Measurement Part

Measurement Part

7

Accessories

Standard Calibration Foils Probe Adaptor

Carrying Case Batteries size AA (4pcs) Calibration Foilcase

Operating Manual

Iron Substrate (FE-J) Aluminum Substrate (NFE-J)(For LE-300J,LZ-300J) (For LH-300J,LZ-300J) (LE-300J,LZ-300J : 6pcs / LH-300J : 5pcs)

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Foil Calibrations ( P. 15)

Measurment Mode

Calibration Procedure

( P. 14,15)Limit Mode ( P. 21)

Battery Check ( P. 24)

Upper Limit ( P. 21)

Lower Limit ( P. 21)

Unit of Measurement

( P. 20)

3. Display

• Please refer to the page shown by " P. " about the function and meaning of each pattern.

Measured value etc.

Electromagnetic ( P. 6,12)

Eddy Current ( P. 6,12)

9

Key Name Function

ON key, OFF key This key is a power supply switch.

1. Number keys 1. This key is used for a number input.

2. Dual-function keys 2. These keys have two functions.

CLEAR key Used to clear incorrectly input numeric values.

ENTER key Used to enter the numeric values shown on the display.

FUNCTION key This key is pressed before the dual-function keys are used(except for use for numeric input).

4. Keypad Fanctions

10

Dual-function Keys : The following keys also have a thing with two functions.These are called function mode key. These keys are pressed immediately after presetting a function key.

A result -- as a function mode key -- functioning.

Function mode

Numeric key

Key Name Function

SUBSTRATE CALIBRATION key Substrate ‘0’ calibration.

( press )

FOIL CALIBRATION key For making foil calibrations.

( press )

CONTINUOUS key1. Hold measurement (for auto result entry)

2. Continuous measurement (requires key for result entry)(Each press of this key switches the mode.)( press )

LIMIT SET key For presetting the upper and lower limits.

( press )

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5. Specifications

LE-300J LH-300J LZ-300J

Electromagnetic Eddy Current Electromagnetic,Eddy Current

Non-magnetic coatings on magnetic metal substrates Insulating coatings on non-magnetic metal substrates Non-magnetic coatings on magnetic metal substrates

Insulating coatings on non-magnetic metal substrates

0 ~1500µm or 60.0 mils 0 ~800µm or 32.0 mils 0 ~1500µm or 60.0 mils,0 ~800µm or 32.0 mils

LEP-J (Fe) LHP-J (NFe) LEP-J (Fe),LHP-J (NFe)

±1µm under 50µm ±2% at 50µm or greater

0.1µm under 100µm 1µm at 100µm or greater

µm or mils (selection)

Digital (LCD, minimum displayed digit is 0.1µm)

1.5V alkaline batteries (size AA) x 4

60 hours (continuous use)

0 ~ 40˚C

Main Unit: 75(W) x 140(D) x 31(H) mm, 0.5kg Probe: Ø13 x 94 mm

Iron substrate (FE-J) Aluminum substrate (NFE-J) Iron substrate (FE-J), Aluminum substrate (NFE-J)

* Standard Calibration Foils x 6 or 5, Probe Adaptor, Carrying Case, Batteries (size AA) x 4, Calibration Foil Case,

Operating Manual

Beryllium Copper Calibration Foil

* The accessory plastic calibration foils supplied have had their actual values measured. For this reason the values indicated above areonly approximate and are not exactlythe same actual thicknesses of the supplied foils.

* Standard Accessories Plastic Calibration Foils LE-300J, LZ-300J : Approx. 10,50,100,350,800,1000 (µm)LH-300J : Approx. 10,50,100,350,800, (µm)

Model

Measuring Method

Applications

Measuring Range

Probe type

Measuring Accuracy

Resolution

Display Unit

Display

Power Supply

Battery Life

Temperature

Dimensions & Weight

Accessories

Accessories (Common use)

Optional Accessories

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6. Preparations for Operation

1. Insert the batteries

The battery cover is opened by sliding the battery coveron the rear of the case in the direction indicated by thearrowhead mark ( " ∆ " ).Insert 4 size AA alkaline batteries into the batterycompar tment as indicated by the picture in thecompartment. Take care to align the positive and negativeends of the batteries correctly.

2. Selecting and Connecting the probe (LZ-300J)

Select a probe appropriate to the type of sample to bemeasured with switching the main unit off.

(LE-300J • LZ-300J)Non-magnetic coating on magnetic metal substrates:Electromagnetic type probe Fe probe (Black)<LEP-J>(LH-300J • LZ-300J)Insulating coatings on non-magnetic metal substrates:Eddy current type probe NFe probe (Gray)<LHP-J>

• The probe can be easily connected to the main unit byturning a little while softly pressing it into the probe socketon clockwise of the main unit.

• When removing the probe from the main unit, always besure to grip, the metal fitting at the end of the probe cordconnected to the main unit. Note that the probe can notbe disconnected by pulling on the black portion of the cord.

OPEN

Slide to open

Load baatteries into the main unit

Connecting the probe

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Using probe Using probe adapterfor carved probe

Measuring Range Adjustment point ( Electromagnetic )

0~50µm Iron substrate 10µm 25µm 50µm



Measuring Range Adjustment point ( Eddy Current )

0~50µm Aluminum substrate 10µm 25µm 50µm



4. Using the probe

The probe features a 1-point contact, fixed pressure designwhich ensures fixed load applied the chip on the tip theprobe. As shown in the diagram, grip the probe near thetip and press it against the measurement surface so thatit is perpendicular to the surface. To make the nextmeasurement, lift the probe tip at least 10mm from themeasurement surface and then press it down again.

• The probe adapter can be used to obtain stable, reliable measurementswhen measuring coatings on curved surfaces such as pipes , etc., orwhen making continuous measurements on a flat surface.

3. Adjustment preparation

Adjustments must be made attempting to makemeasurements. However, measurement calibrations arestored in the unit’s computer memory, therefore newadjustments are not required if the sample to be measuredhas been measured previously. In this case, the previousadjustments can be recalled from memory.

1A standard "substrate" of the same material,shape andthickness as the sample to be measured is used to makecalibration adjustments. Have the standard substrate readybefore beginning the adjustment procedure.

• Use bare standard substrates which are free of coatings such as platingor paint. Standard substrates of this type are referred to as "zero foils" inthis manual.

2In order to obtain the most accurate precise measurementresults possible, adjustments are performed with zero foilsand standard foils (samples of known thickness) usingthe Standard Foil 4-point Adjustment Method.

• Refer to the chart to select a set of 3 standard foils appropriate for makingadjustments for the thickness of the coating to be measured.

<Standard Foil Combination Example>

• The supplied standard foil values will not necessarily be exactly the sameas those indicated in the chart. Instead, standard plates with actuallymeasured values close to these values are supplied.

• An attached standard board is used for an easy accuracy check.

It attaches in the point ofa probe with an adapter.Furthermore, a screw istightened.

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Press theENT key10 times.

Step Operation Display Explanation

Press the key.

Press the key.

Press the key 10 times while pressing the probe against

the substrate.

• The substrate should be an uncoated (no plating, paint, etc.) sample ofthe same shape and material as that to be measured.

After pressing the key 10 times the buzzer will sound

intermittently and "IF" will appear in the display.

Press the key while holding the probe toward the air.• The probe must be in the air, don’t touch any surface or others.

1

2

3

4

○

○

○

○

○

○

○

○

○

○

○

5. Calibration

1) Substrate Calibration ProcedureOnce substrate calibration settings have been registered it is not necessary to perform this operation each time ameasurement is made. However this procedure must be performed again when changes such as replacement of theprobe are made.

•Example: Using an electromagnetic probe

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2) Standard Foil Calibration Procedure

Turn on the probe and the main unit and hold the tip of the probe toward the air for 2 ~ 3 seconds.

• Example: Performing calibration using the zero foil and standard foils (40, 100 and 400µm foils).

1

2

5

5

6

7

Press the key.

Press the key.

Measure the (substrate) 5 times. The buzzer will sound and

the measured value will be displayed each time.

• Substrate: An uncoated (no plating, paint, etc.) sample of the same shapeand material as that to be measured.

• Depending upon the type of material, the value displayed may differ greatlyfrom that indicated in the example to the left (a value close to zero).However, the procedure can be continued by setting it close to the settingvalue by performing steps 9 and 0.

○

○

○

○


(Measure 5 times) <Calibration using the zero foil>

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Press the key while holding the probe toward the air.

"---" is shown in the display.

Input the coating thickness of the substrate (0.0µm).

Press the key. The number displayed disappears and S.

NO increments from 0 to 1 to indicate that the unit is enteringthe standard foil calibration mode.

8

9

0

<Calibration using the standard foil (40µm)>

!

1

2

5

Place the 40µm calibration foil on the substrate and repeat

the measurement procedure 5 times.

• Depending upon the type of material, the value displayed may differ greatlyfrom that indicated in the example to the left. However, you can continuethe procedure by setting it near the setting value by performing steps #and $.

○

○

○

○


(Measure 5 times)

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Input the coating thickness of the calibration foil (40.0µm).


NO increments from 1 to 2 to indicate that the unit is readyfor calibration using the second standard foil.

@

#

$

<Calibration using the calibraiton foil (100µm)>

%

Place the 100µm standard foil on the zero foil (substrate)

and repeat the measurement procedure 5 times.

• Depending upon the type of material, the value displayed may differ greatlyfrom that indicated in the example to the left. However, you can continuethe procedure by setting it near the setting value by performing steps &and * .

1

2

5


(Measure 5 times)

18

Place the 400µm standard foil on the substrate and repeat

the measurement procedure 5 times.

• Depending upon the type of material, the value displayed may differ greatlyfrom that indicated in the example to the left. However, you can continuethe procedure by setting it near the setting value by performing steps -and = .



Input the coating thickness of the calibraiton foil (100.0µm).


NO increments from 2 to 3 to indicate that the unit is readyfor calibration using the third standard foil.

^

&

*

<Calibration using the standard foil (400µm)>

(


(Measure 5 times)

1

2

5

19

Press the key while holding the probe toward the air. "---

" is shown in the display.

Input the coating thickness of the calibraiton foil (400.0µm).

Press the key. The display returns to its original state.

This completes the calibration procedure.

• Calibrations remain stored in the unit's non-volatile computer memory evenwhen the unit's power is turned off.

)

-

=


• 5 measurements are made at each stage of the zero and calibration foil adjustment procedure in order to obtain theaverage measurement value.

• If you make errors while entering numeric values during the calibration procedure, press the key to delete the value

and then input the correct value. However, please note that corrections cannot be made after the key has beenpressed. If you press the key after entering incorrect values, turn the power off once and then back on and resumethe procedure from step 5.

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7. Measuring Procedure

(1)Select & Connect the probeIn the LZ-330J, select the appropriate type of probe for the type of mate-rial to be measured. ( P. 4,12)

(2) Turn on the main unit's power.Press the ON key.

(3) AdjustmentBefore beginning a measurement, check to see if the unit has been cali-bration for measurement of that type of material. If calibration has notbeen performed, perform the calibration operation and register the cali-bration settings. ( P. 14)

(4) Measurement

Quickly press the probe against the surface to be measured in such a waythat the probe is perpendicular to the surface. The next measurement canbe performed after first removing the tip of the probe at least 10mm fromthe surface being measured.

• "HH" or "LL" will appear in the display if the measured coatingthickness values exceed the upper or lower bounds of the unit'smeasurement range.

(5) Converting Measurement Value Display UnitsYou can convert between µm and mils as the measurement value unitsdisplayed. To do so, first turn off the units power, then press the ON key toturn the unit on again while holding down the ENT key.

while holding down

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Step Operation Display

1

2

3

4

5

6

• Upper and lower limits are set when it is necessary to check thatcoating thickness values are within a certain range.

• A buzzer sounds and the " " indicator appears in the display ifmeasured values fall outside of this range.

• Keys are pressed in the following sequence in order to delete theupper and lower limit settings.

8. Functions

(1) Setting Limit Values

•Example: Setting the upper limit at 100µm and the lower limit at 50µm.

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Step Operation Display

1

2

To Continuous Mode To Hold Mode

(6) CONT (Changing the Measurement Value Display Mode)You can switch the measurement value display mode between the Hold(fixed value display) and Continuance (continuous monitoring) modes.

• The Continuance Mode is used in cases such as the measurementof coatings on complexly shaped objects in which measurementvalues have a tendency to be unstable. This allows you to obtainstable measurement values and makes statistical processing easierand more reliable.

<Making Measurements in the Continuance Mode>

Press the tip of the probe against the surface to be measured andwait for the value shown in the display to stabilize, then press theENT key. The value displayed at that point will be stored in memoryas the measured value.

<Making Calibrations in the Continuance Mode>

Use the ENT key as described above when performing steps 7, ! ,% and ( of the standard foil calibration procedure.

• You can switch back and forth between the Hold and Continuancemodes by repeating this key operation procedure.

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9. Easy Calibration (For Eddy Current method only)

Simplified "easy" adjustment can be made in order to make Eddy Current measurement mode measurements. (Easy adjustment is not possible for theelectromagnetic measurement mode.) If the coating thickness does not exceed 500µm, measurement results are as precise as those obtained usingstandard foil calibration adjustments. In the easy adjustment procedure, only the substance calibrations are performed. Once substance calibrations havebeen registered it is not necessary to perform this procedure each time measurements are made. However, the substance calibration procedure must beredone in cases such as if the probe is replaced with a new one, etc.<Easy Adjustment Procedure> • This type of calibration adjustment is only valid for the eddy current measurement mode.

Press theENT key10 times.


1

2

3

4

○

○

○

○

○

○

○

○

○

○

○

Press the key.

Press the key.

Press the key 10 times while pressing the probe against

the substrate.

• The substrate should be an uncoated (no plating, paint, etc.) sample ofthe same shape and material as that to be measured.

After pressing the key 10 times the buzzer will sound

intermittently and "IF" will appear in the display.

Press the key while holding the probe toward the air.• The probe must be in the air, don’t touch any surface or others.

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10. Notes for Measuring and Handling

(1) Confirm the type of material being measured.Be sure to check the type of material and select the correct probe typebefore beginning measurements.

(2) Do not damage the probe or get it dirty.Accurate measurement results cannot be obtained if the chip on the tip ofthe probe is damaged or dirty. Do not pound the probe against the mea-surement surface or move the probe laterally while it is pressed down uponthe surface. When finished making measurements, use a soft cloth wet withbenzine or alcohol to clean the tip of the probe.

(3) Handle the calibration foils with care.The thickness of the calibration foils has been measured very precisely. Youwill not be able to obtain accurate measurement results if you use calibra-tion foils which have been scratched, bent or otherwise damaged. Be par-ticularly careful not to subject the thinnest foil, the 10µm foil, to wear.If a standard foil becomes damaged while being used, please contact thedealer from whom you purchased the tester and order a replacement of thesame thickness. Although the thickness of replacement foils may slightlydifferent than that of the original foils, this does not pose a problem forcalibration adjustments.

(4) Replace the batteries immediately if the low-voltageindicator is displayed.When the batteries become weak, a "BAT" indicator will appear in the dis-play when the power is first turned on or while the tester is in use.Immediately replace the batteries with 4 new size AA alkaline batteries whenthis indicator is displayed. Please note that calibration adjustments aremaintained in the unit's non-volatile memory even when the batteries areexhausted.

(5) Adjustment & InspectionIn order to maintain precise performance the coating thickness testers shouldbe inspected at least once per year.Please contact the merchant from whom you purchasd your unit regardinginspection.

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MEMO

0402·MA·0101·500

300j series coating thickness testers le-300j/lh … · 300j series coating thickness testers...

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