Kett LE-330J User manual

330J Series Coating Thickness Testers
LE-330J/LH-330J/LZ-330J
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 ...................................................................................................................... 12
6. Preparations for Operation .................................................................................................. 13
7. Measuring Procedure .......................................................................................................... 22
8. Functions ............................................................................................................................. 24
9. Easy Calibration (For Eddy Current method only)............................................................... 32
10.Notes for Measuring and Handling ...................................................................................... 33
11.Data output format............................................................................................................... 35
Contents

4
•The model LE-330J 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-330J Eddy Current coating thickness tester is designed to measure the thickness of insulating coatings such
as alumite or paint on non-magnetic metal substrates (such as aluminum or copper, etc.).
•The model LZ-330J dual-type coating thickness tester is designed to measure the thickness of either non-magnetic or
insulating 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-330J
LE-330J LH-330J
Applicable Coatings
Substrate Iron Steel Aluminum, Copper, Brass, etc.
Paint Plastic
Lacquer Resin
Rubber Enamel
Lining Zinc
Chrome Tin
Copper Aluminum
Other
Paint Alumite
Rubber Plastic
Enamel Lacquer
Resin Other
1. Measuring Principles and Characteristics

5
•LH-330J
(Eddy Current measurement method: For measuring
the thickness of insulating coatings on non-magnetic
metal substrates)
An eddy current is produced in the surface of a metal when
a coil through which a current of fixed frequency is brought
near the metal.This eddy current and the voltage at the
ends of the coil change in proportion to the distance be-
tween the coil and the metal surface.This change can be
determined from the current value and this is used to cal-
culate the thickness of the coating.
•LE-330J
(Electromagnetic measurement method : For measur-
ing the thickness of non-magnetic coatings on mag-
netic metal substrates)
When an alternating current electromagnet is brought near
iron (or other magnetic metal) the number of magnetic
flux lines passing through the coil changes in proportion
to the distance, thereby causing a change in the voltage
at the ends of the coil.This change in voltage is deter-
mined from the current value and this is used to compute
the thickness of the coating.
• LZ-330J(Dual Electromagnetic and Eddy Current Type)
The model LZ-330J is a dual type coating thickness tester which features both the electromagnetic and Eddy Current
measurement methods.
Low-Frequency
Power Supply
Non-Magnetic Coating
Iron • Steel Thickness D
Electromagnetic coil
Current
Change i
Induction coil
Insulating Coating
Non-Magnetic Metal Thickness D
High-Frequency
Power Supply
Current
Change 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
Dust Cap
printer & Computer Out put Connector
Display
Keyboard Battery Box
Connector
Connector
Measurement Part
Measurement Part

7
Accessories
Standard Calibration Foils Probe Adaptor
Carrying Case Batteries size AA (4pcs) Calibration Foilcase
Operating Manual printer VZ-330
Iron Substrate (FE-J) Aluminum Substrate (NFE-J)
(For LE-330J,LZ-330J) (For LH-330J,LZ-330J) (LE-330J,LZ-330J :
6pcs / LH-330J : 5pcs )
Optional Accessories

8
Foil Calibrations ( P. 17)
Measurment Mode
Calibration Procedure
( P. 16,17)
Limit Mode ( P. 25)
Battery Check ( P.34)
Upper Limit ( P.25)
Lower Limit ( P. 25)
Unit of Measurement ( P. 23)
3. Display
• Please refer to the page shown by " P. " about the function and meaning of each pattern.
Measured value etc.
Electromagnetic ( P. 6,13)
Eddy Current ( P. 6,13)
Measurement Number Symbol
Lot Number ( P. 24)
Data ( P. 24)
Date ( P. 24) or
measurement number
Minimumvalue ( P. 23,28,29,36)
Maximum value ( P. 23,28,29,36)
Standard deviation ( P. 23,28,29,36)
Average value ( P. 23,28,29,36)

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.
1. CLEAR key 1. This key is used to correct mistakes made when inputting
2. DATA TRANSFER Key numeric data.
2.This key is also used to transmit measure
ment data and other information to a printer or computer.
( press )
ENTER key Use to enter the numeric value indicated in the display.
Also used to proceed to the next operation.
FUNCTION key This key is used to execute the Function Mode functions of the
numeric keys. (Date, Lot Number, Statistical calculations, etc.)
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
DATE Key Used to print the date.
( press )
LOT Number Key Used to input lot numbers.
( press )
DELETE Key Used to delete mistaken measurement data from the measurement
value memory. ( press )
LOT RESULT Key Used to perform statistical calculations by lot.
( press )

11
Key Name Function
SUBSTRATE CALIBRATION key Substrate ‘0’calibration.
( press )
FOIL CALIBRATION key For making foil calibrations.
( press )
CONTINUOUS key 1. 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.
FINAL RESULT key Used to perform overall statistical calculations.
( press )
ALL CLEAR key Used to delete all data from the measurement value memory.
(Measured values, various comments, etc.)
( press )
APPLICATION NUMBER key Used to select and confirm the calibration memory location at
which calibration data is stored.
( press )

12
5. Specifications
LE-330J LH-330J LZ-330J
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)
5
x
5mm
2180 coating thickness measurements maximum
44
Electromagnetic x
4,
Eddy Current x
4
No. of measurements, number of block numbers, average value, standard deviation, maximum value, minimum value
Digital (LCD, minimum displayed digit is 0.1µm)
RS-232C
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, Printer VZ-330
* The accessory plastic calibration foils supplied have had their actual values measured. For this reason the values indicated above are
only approximate and are not exactlythe same actual thicknesses of the supplied foils.
*Standard Accessories Plastic Calibration Foils LE-330J, LZ-330J : Approx. 10,50,100,350,800,1000 (µm)
LH-330J : Approx. 10,50,100,350,800, (µm)
Model
Measuring Method
Applications
Measuring Range
Probe type
Measuring Accuracy
Resolution
Display Unit
Min. Measurement Surface Area
Data Memory Capacity
NO. of Calibration Parameter Memories
Statistical Fanctions
Display
Interface
Power Supply
Battery Life
Temperature
Dimensions & Weight
Accessories
Accessories (Common use)
Optional Accessories

13
6. Preparations for Operation
1. Insert the batteries
The battery cover is opened by sliding the battery cover
on the rear of the case in the direction indicated by the
arrowhead mark ( " ∆" ).
Insert 4 size AA alkaline batteries into the battery
compartment as indicated by the picture in the
compartment.Take care to align the positive and negative
ends of the batteries correctly.
2. Selecting and Connecting the probe (LZ-330J)
Select a probe appropriate to the type of sample to be
measured with switching the main unit off.
(LE-330J • LZ-330J)
Non-magnetic coating on magnetic metal substrates:
Electromagnetic type probe Fe probe (Black)<LEP-J>
(LH-330J • LZ-330J)
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 by
turning a little while softly pressing it into the probe socket
on clockwise of the main unit.
• When removing the probe from the main unit, always be
sure to grip, the metal fitting at the end of the probe cord
connected to the main unit. Note that the probe can not
be disconnected by pulling on the black portion of the cord.
Slide to open
Load baatteries into the main unit
Connecting the probe

14
Using probe Using probe adapter
for carved probe
Measuring Range Adjustment point ( Electromagnetic )
0~50µm Iron substrate 10µm25µm50µm
50~500µm Iron substrate 50µm100µm500µm
500~1500µm
Iron substrate 500µm1000µm1500µm
Measuring Range Adjustment point ( Eddy Current )
0~50µm Aluminum substrate 10µm25µm50µm
50~300µm Aluminum substrate 50µm100µm300µm
300~800µm
Aluminum substrate 350µm500µm800µm
4. Using the probe
The probe features a 1-point contact, fixed pressure design
which ensures fixed load applied the chip on the tip the
probe.As shown in the diagram, grip the probe near the
tip and press it against the measurement surface so that
it is perpendicular to the surface. To make the next
measurement, lift the probe tip at least 10mm from the
measurement surface and then press it down again.
•The probe adapter can be used to obtain stable, reliable measurements
when measuring coatings on curved surfaces such as pipes , etc., or
when making continuous measurements on a flat surface.
3. Adjustment preparation
Adjustments must be made attempting to make
measurements.However, measurement calibrations are
stored in the unit’s computer memory, therefore new
adjustments are not required if the sample to be measured
has been measured previously.In this case, the previous
adjustments can be recalled from memory.
1A standard "substrate" of the same material,shape and
thickness as the sample to be measured is used to make
calibrationadjustments.Havethe standard substrate ready
before beginning the adjustment procedure.
•Use bare standard substrates which are free of coatings such as plating
or paint.Standard substrates of this type are referred to as "zero foils" in
this manual.
2In order to obtain the most accurate precise measurement
results possible, adjustments are performed with zero foils
and standard foils (samples of known thickness) using
the Standard Foil 4-point Adjustment Method.
•Refer to the chart to select a set of 3 standard foils appropriate for making
adjustments for the thickness of the coating to be measured.
<Standard Foil Combination Example>
•The supplied standard foil values will not necessarily be exactly the same
as those indicated in the chart. Instead, standard plates with actually
measured values close to these values are supplied.
•An attached standard board is used for an easy accuracy check.
It attaches in the point of
a probe with an adapter.
Furthermore, a screw is
tightened.

15
5. Calibration
Specify calibration memory address at which to store
calibration settings.
The LZ-330J has the capacity to store up to a maximum
of 4 calibration settings for both electromagnetic and eddy
current measurement modes, and the LE-330J has the
capacity to store up calibration settings for 4
electromagnetic mode and LH-330J also has the capacity
to store up calibration setting for 4 eddy current mode.
The calibrations used for a particular measurement are
selected depending upon the type of sample being
measured. The calibration memory address (APL#) at
which a particular set of calibration settings is stored is
selected at the beginning of the adjustment (calibration)
procedure.
The memory addresses that can be used for electromagnetic
and eddy current calibration settings are as follows:
(LE-330J • LZ-330J)
Electromagnetic Mode (Fe Probe) A1, A2, A3, A4
(LH-330J • LZ-330J)
Eddy Current Mode (NFe Probe) A5, A6, A7, A8
•After powering on and after switching between electromagnetic and eddy
current mode, the unit is automatically set to the previous APL#. If it is
not necessary to change this, press key.
1) Calibration Memory Address Selection Procedure
•Example: Using an electromagnetic probe
Step Operation Display
1
2
3
4
5

16
Press the
ENT key
10 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 of
the 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
○○○○○○
○○○○○
2) Substrate Calibration Procedure
Once substrate calibration settings have been registered it is not necessary to perform this operation each time a
measurement is made. However this procedure must be performed again when changes such as replacement of the
probe are made.
•Example: Using an electromagnetic probe

17
3) 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 shape
and material as that to be measured.
•Depending upon the type of material, the value displayed may differ greatly
from 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 setting
value by performing steps 9and 0.
○○○○
Step Operation Display Explanation
(Measure 5 times)
<Calibration using the zero foil>

18
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 entering
the 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 greatly
from that indicated in the example to the left.However, you can continue
the procedure by setting it near the setting value by performing steps #
and $.
○○○○
Step Operation Display Explanation
(Measure 5 times)

19
Press the key while holding the probe toward the air.
"---" is shown in the display.
Input the coating thickness of the calibration foil (40.0µm).
Press the key.The number displayed disappears and S.
NO increments from 1 to 2 to indicate that the unit is ready
for 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 greatly
from that indicated in the example to the left. However, you can continue
the procedure by setting it near the setting value by performing steps &
and *.
1
2
5
Step Operation Display Explanation
(Measure 5 times)
○○○○

20
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 greatly
from that indicated in the example to the left.However, you can continue
the procedure by setting it near the setting value by performing steps -
and =.
Press the key while holding the probe toward the air.
"---" is shown in the display.
Input the coating thickness of the calibraiton foil (100.0µm).
Press the key.The number displayed disappears and S.
NO increments from 2 to 3 to indicate that the unit is ready
for calibration using the third standard foil.
^
&
*
<Calibration using the standard foil (400µm)>
(
Step Operation Display Explanation
(Measure 5 times)
1
2
5
○○○○