Kett LE-200C User manual

Operation Manual
Model LE-200C/LH-200C/LZ-200C
Coating Thickness Testers

1. Features ................................................................................................................. 1
2. Specifications ........................................................................................................ 2
3. Measurement Principles....................................................................................... 3
4. Part Names and Functions................................................................................... 4
5. The Keyboard ........................................................................................................ 6
6. Operating the Coating Thickness 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

LZ-200C
The 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.

LE-200C
For measurement of non-
magnetic films on iron and
steel.
Using magnetic induction
method and a built-in printer
the LE-200C thickness tester
cancalculateaveragestandard
deviation, maximum value
read, minimum value read and
number of samples taken with
the push of a single button.

LH-200C
For measurement of non-
conductivefilms 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.

1.Features
1Calibration Memory Function
Because the LE-200C • LH-200C • LZ-200C store set calibration
parameters (up to a maximum of four types for both the
electromagnetic and high-frequency functions) in its microcomputer
memory, measurements can be made immediately after turning
on the power if the material being measured is the same.
2Hardcopy Printout of Statistical Calculation Values
Statistical calculations such as average values, standard deviation,
maximum and minimum values can be calculated and printed out
automatically at the press of a key.
3Limit Function
The LE-200C • LH-200C • LZ-200C can be set to sound a buzzer
and print a warning 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 measurement functions.
• Applications
LE-200C, LZ-200C
Electromagnetic Measurement Format (Coatingthickness
measurement for non-magnetic coatings on magnetic metal surfaces)
Aluminum
Copper
Brass
Stainless steel
(non-magnetic)
Etc
.
LH-200C, LZ-200C
High-Frequency Measurement Format (Coating thickness
measurement for insulating coatings on non-magnetic metals)
Coatings Measured Substrate
Paint Anodized
Plastic Aluminum
Lacquer Resist
Resin
Rubber

2
2.Specifications
LZ-200C
Measurement Format LE-200C LH-200C
Electromagnetic High-Frequency
Probe Type LEP-20C(Fe) LHP-20C(NFe)
Object of Measurement Non-magnetic coatings on iron and steel substrates Insulating coating on non-magnetic metal substrates
Measurement Range 0 ~ 1500µm or 60.00mils 0 ~ 800µm or 32.00mils
Measurement Units µm or mils (selectable) µm or mils (selectable)
Measurement Precision Under 15µm : ±0.3µm (absolute error) Under 50µm :±1µm (absolute error)
15µm or greater : ±2% (relative error) 15µm or greater : ±3% (relative error)
No. of Calibration 44
Parameter Memories
Resolution 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 100V AC (50/60Hz) or 6 size AA dry-cell batteries (main unit)
4 size AA dry-cell batteries (printer)
Operating Temperature 0 ~ +40˚C
Main Unit Weight Approximately 1,100g
Dimensions Main Unit : 55(height) x 120(width) x 250(depth) Probe :11mm ø x 90mm
Accessories 1 carrying case, 1 AC adapter, 1 iron substrate S45C(except the LH-200C), 1 set of calibration foils, 2 rolls of
printer paper

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

4.Part Names and Functions
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

(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

5.The Keyboard
6
Reset Key
In order to reduce power consumption, the LE-200C • LH-200C • LZ-200C automatically go into the Sleep Mode and "SLEEP" will
be displayed on the LCD if the unit is left unused for mor than 10 minutes 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 out printer paper.

7
Printer ON/OFF Key
This key used to turn the printer on and off. Lightly pressing this key will 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.

8
Function Key
This key is pressed to use the double-definition key function modes (date, lot number statistical results, etc.). The LE-200C •
LH-200C • LZ-200C features the function modes described below ;
Date Key
This key is used 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 measurement number.

9
Continue Key
This key is used to convert the measurement values display between the Hold Mode and Continuous Monitoring Mode.
Block Increment Key
This key is pressed to change the block 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.

(1) Measurement Preparations
1 Preparing the power source
The LE-200C • LH-200C • LZ-200C have been designed for
use with either 100V/220V AC 50/60Hz or dry cell batteries
as the power supply.
(a) Running the LE-200C • LH-200C • LZ-200C on a 100V/
220V AC power supply
Turn the main unit's power switch off and insert the plug of
the supplied AC adapter into the AC adapter Socket on the
right side of the main unit. Next connect the AC adapter to
a 100V/220V power 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
When the AC adapter plug is connected to the unit's AC
Adapter Socket with dry cell batteries loaded into the com
partment the unit will automatically switch over to the
AC power supply.
6.Operating the Coating Thickness Tester
10
Diagram 2
Diagram 1

11
2Loading Battery in the Probe
Use the LEP-20C (Fe) probe to measure the thickness of non-
magnetic coatings on magnetic metal surface or the LHP-20C
(NFe) probe to measure insulating coatings on non-magnetic
metal surface.
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. (Diagram 4)
Diagram 4
Diagram 3

12
3 Turning on the Power Switch
The power is turned on by sliding the power switch on the
right side of the main unit upwards. The type of probe being
used and the calibration parameters last used are displayed
on the LCD panel.
4 Inserting Printer Paper
After removing the paper compartment cover, cut the edge of
the printer paper with a pair of scissors, etc., so that the paper
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 is on and ready to
use.
【Display Example】LZ-200C
＊NF APPL. No = 2
(High -frequency format (NF), Calbration Position (2))
＊FE APPL. No = 1
(Electromagnetic format (FE), Calbration Position (1))
Diagram 5

(2) Calibration Preparations
Because the LE-200C • LH-200C • LZ-200C are used for comparative
measurements of various materials, it must always be calibrated
before use.
However, if the same materials are to be measured, calibration
parameters (up to four sets each for both the electromagnetic and
high-frequency measurement formats) will remain in the unit's
microcomputer memory even if the power is turned off so
measurement can be made immediately when the power is turned
on again. Please take note of the following items when calibrating
the unit and making measurements.
1Use a substrate of the same material, shape and thickness
as the object of actual measurement when calibrating the
LE-200C • LH-200C • LZ-200C.
2Prepare a substrate that has not been painted or plated (a
"zero substrate").
3Although 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
4Using 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 measured as shown in Diagram 6 and quickly
press the probe vertically against the surface.
To make the next measurement, move the top of the probe
10mm or more from the measurement surface, then press it
down against the surface again.
Measurement Range Standard Sheet 4-point Calibration
0 ~ 100µmZero substrate, 10µm, 40µm, 100µm
100 ~ 400µmZero substrate, 40µm, 100µm, 400µm
400 ~ 800µmZero substrate,100µm, 400µm, 750µm
*800 ~1500µmZero substrate, 750µm, 1000µm, 1400µm
【Example】
* This calibration cannot be done for the high-frequency mode as it
exceeds the measurement range.

Step key Operations Display
(3) Calibrating the LE-200C • LH-200C • LZ-200C
The LE-200C • LH-200C • LZ-200C can store up to 4 sets each of
calibration parameters for both the electromagnetic and high-
frequency measurement formats.
Decide which application number you wish to store a particular set
of calibration parameters in before performing 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.
* FUNCTION KEY
* APPL. No=(1-4)?
(Number displayed is the previous
application number)
* APPL.No=4
* NF (Input complete)
*** APPL.No=4 ***
(Printout)
1
2
3
4
14