SANKO Coating Thickness Meter
ＳＷＴ－７０００Ⅳ
Instruction Manual

Caution● Read the manual thoroughly and use the meter correctly.
● Keep the manual with care and refer to it when necessary.

SANKO ELECTRONIC LABORATORY CO., LTD.
Tokyo･Osaka・Sendai・Nagoya・Fukuoka・Kawasaki
August 2023

Contents

Pages

Attention for safety ･･･････････････････････････････････････････････････････････････････････････

１

Notes ････････････････････････････････････････････････････････････････････････････････････････

３

Get started ･･････････････････････････････････････････････････････････････････････････････････

４

・ Contents in a package ････････････････････････････････････････････････････････････

４

・ Names of part ････････････････････････････････････････････････････････････････････

５

・ Items displayed on LCD ･･･････････････････････････････････････････････････････････

７

・ How to fit batteries ･･･････････････････････････････････････････････････････････････

８

・ How connect, disconnect probes ･･････････････････････････････････････････････････

９

・ How to hold probes ･･･････････････････････････････････････････････････････････････

１０

・ How to press a probe to an object ･････････････････････････････････････････････････

１０

How to operate ･･････････････････････････････････････････････････････････････････････････････

１１（１） How to switch power source ･････････････････････････････････････････････････････

１１（２） How to switch off ････････････････････････････････････････････････････････････････

１１（３） Zeroing ･････････････････････････････････････････････････････････････････････････

１２（４） Calibration standard (CAL) ･･･････････････････････････････････････････････････････

１４（５） Zeroing － in special cases － ･･･････････････････････････････････････････････････

１６（６） 2-point calibration in case it is difficult to perform ｢Zeroing｣ ･････････････････････････

１９（７） How to delete calibration ･････････････････････････････････････････････････････････

２３

Measuring ････････････････････････････････････････････････････････････････････････････････････

２４

Function setting ･･････････････････････････････････････････････････････････････････････････････

２５（１） Setting of Non-Intrrupt Measeuremnt mode ････････････････････････････････････････

２５（２） Setting of resolutions ･････････････････････････････････････････････････････････････

２７（３） Setting of units ･･････････････････････････････････････････････････････････････････

２８（４） Setting of Auto-Power-OFF function ･･････････････････････････････････････････････

２９（５） Setting of corresponding mode to substrate with SFN-325 probe ････････････････････

３１（６） Setting of Backlight ･･････････････････････････････････････････････････････････････

３２

Transferring data － Real time transfer － ･････････････････････････････････････････････････････

３３

Note to improve measuring accuracy ･･･････････････････････････････････････････････････････････

３４

Trouble shooting ･･････････････････････････････････････････････････････････････････････････････

３５Disclaimer ････････････････････････････････････････････････････････････････････････････････････

３６

Specifications ◆ main unit ･･･････････････････････････････････････････････････････････････････

３７◆ probe (option） ･･････････････････････････････････････････････････････････････

３８

References （measurement principles） ･････････････････････････････････････････････････････････

４１

Attention for safety （to use safely and correctly）
To prevent you and your properties from damaging please take some time toread thoroughly this “Attention for Safety” and use this main unit correctly.
And keep these instructions attentive to read when necessary.

Warning● Do not dump nor wet the main unit in water, otherwise it may cause malfunctions.
Prohibition
Please contact our distributor or sales office should submerged water into the main unit.
● Do not insert metals or foreign substances into the main unit, otherwise it may cause malfunctions.
Prohibition
Please contact our distributor or sales office should put any metals or foreign substancesin the main unit.
● Do not insert a screwdriver into the connector, otherwise that it may cause malfunctions.
Prohibition● Do not throw, smash, drop the main unit, otherwise it may cause injuries, damages, malfunctions.
Prohibition● Never dismantle or modify the main unit by yourself, otherwise it may cause errors reactions
Prohibition
or damages.
● Do not use AC adaptors other than an exclusive adaptor for this main unit.
Prohibition※ And do not use volatage other than the specified voltage, otherwise it may cause damages,
electric shocks, fires.
● Keep the terminal of AC adaptor from conductive substances or dirt, otherwise it may cause
Prohibition
short circuits, electric shocks, ignitions and fires.
● Do not handle the AC adaptor with wet hands, otherwise it may cause electric shocks.
Prohibition● Do not damage, brake, modify, forcefully bend or twist the cord of the AC adaptor. Or, do not load it
Prohibition
with heavy staff or pinch it forcefully, otherwise it may cause damages, breaking wires, short circuits,
electric shocks, fires.

-1-

Attention for safety （to use safely and correctly）
Warning！ ● Never fail to remove batteries from the main unit when not in use for a long time.
Must
Leakages occurred from deterioration of batteries may cause erroneous reactions or damages.
！ ● Be sure to read this book on the item of 「How to fit batteries」 to replace batteries.
Must！ ● Store batteries in a place where pets and children are incapable of handling them.
Must
Please call a doctor like in a case that a battery is swallowed.
！ ● Do not put batteries into fire or water. Store them in a cool, dry and dark place avoiding flames, highMusttemperature and moisture.
！ ● Do not get batteries shocked and dismantled, and soldered for processingMust！ ● Do not short or recharge batteries and handle with metallic tools like pliers.
Must

！
Must

● Replace with specified, new batterie (watch: battery life).
Some special dry batteries (nickel batteries) may not work properly.

！

● Be sure of paying attention on battery polarity marks, （＋、－） to place the batteries.

Must

！
Must

● In case a battery has leakage please clean up the place with cloths to replace batteries.
And do not touch the leaked liquid and wash skins or clothes in case they are contaminated.

！

● Comply to regulations and laws in your neighbors when disposing of them.

Must！ ● Insert a plug of the ＡＣ adaptor to the full end.
And do not use faulty or loose receptacles, otherwise it may cause electric shocks and fires.

Must！ ● Switch to OFF and unplug the AC adaptor from the receptacle to avoid electric shocks andinjuries when inspecting or cleaning the main unit.

Must

-2-

Attention for safety （to use safely and correctly）
Attention● Do not use Benzene or Thinner for cleaning and spray pesticides on the meter, otherwise it may
Prohibition
cause cracks or malfunctions.
● Do not store the meter in places getting high in temperatures such as in a car in strong sunlight or near
Prohibition
heaters, otherwise it will be hazardous to the meter and may cause malfunctions.
● Do not step, trample down nor put anything on the meter, otherwise it may cause malfunctions
Prohibition
or injuries.
● Keep the meter away off rubber-made articles or vinyl articles. A lengthy contact between
Prohibition
the meter and them may cause stickiness and it may be difficult to get rid of them.

Notes● Please read this manual thoroughly for correct operations before getting started.
● This meter is a precision gauge. Please handle with care.
● Do not tug, bend, fold or curl up forcefully the cables of probes.
● Do not knock or scratch objects with the tip of a probe.
● Keep the tip of a probe clean. A slight amount of dust may cause errors in measurements.
● Clean the meter and store it in free from dust and moisture after operation.
● To keep precision with a gauge please contact us for a periodical inspection.
● Keep the meter away off electric noises, shocks or magnetic fields when in a use, otherwise it may
cause malfunctions.

-3-Get started◆ Contents in a package

Please make sure if the following items sre included.

・ Main unit
SWT-7000Ⅳ
・ Dry batteries LR6 (2 pieces)・ SWT／SAMAC series CD◆ SWT-7000Ⅳ Instruction Manual (this manual)◆ USB driver◆ Instllation of USB transfer driver・ Inspection certificate (warranty)-cum-user registration sheet(This warranty is valid only in Japan)
・ Hand strap cord (attach directly to main unit)
・ Carrying case for main unit-4-◆ Names of part
Probe connector
Display

Battery lid
KeysBattery compartment
Hand strap
Tilt standAC adaptor connector
USB cable connector● Probe connector
Connect an optional-exclusive SWT probe to the probe connector.
（1） To measure a film thickness of coated, plated, lining layer on substrates made of ferrous material
please use a probe of 「SFe」 series for the connection.
（2） To measure a film thickness of coated, lining layer on substrates made of non-ferrous materials
such as Aluminum, etc. please use a probe of 「SNFe」 series for the connection.
（3） To measure a film thickness on a coated metal substrate made of either ferrous or non-ferrous
please use a Dual type probe 「SFN-325」.
● Display
It indicates measurement results, operation guides, or malfunction status. With a backlight.
● Keys（1） 「 」 (Power source ) key
It switches ON or OFF.
（2） 「ZERO」 key
To set a ZERO point of substrate before measuring.
（3） 「▲ 」 key, 「▼」 key
They are a Backlight key / an adjusting key to set a neumericall value for standard adjustments.
（4） 「CAL」 key
This is to start up and finish the Calibration standard, and delete an abnormal value taken during
adjustment process.
(activates only when 「Zeroing」, 「Calibration standard」 is processed with combination with 「▼」 key)
※ Power source key /operation keys activate setting of various kinds of functions in combination
with other keys.

-5-

● Hand strap
Hang the meter through a strap over your wrist never to drop it.
● AC adaptor connctor
A conector to connect the AC adaptor (option).
● USB cable connctor
A conector to connect the USB cable (option) for data transfer.
● Battery compartment
It contains 2 pieces of dry battery (LR6).
● Tilt standSet up the tilt stand to use this meter in a raised position.
about 30°

Pull upCaution● The tilt stand does not come off. Do not remove it forcibly.
● The tilt stand cannot be used when AC adaptor or USB cable are connected.

-6-◆ Items displayed on LCD⑥①「ZERO cal.」 or「Cal. w. foil.」②（AUTO）, （Fe）,
（NFe）

③

④

Measured data⑤
Unit[μm (mm) or mil]

「BAT」

① Indicates 「ZERO cal.」 (Zeroing) or 「Cal. w. foil」 (Calibration Standard), 「2-foil’s cal」 when in process.
It never appears on the reading except when in process of these adjustments.
② At Auto Selection mode, one of the three (AUTO), (Fe), and (NFe) is displayed.
Fe
At Corresponding mode to substrate,is displayed when being setting for exclusively Ferrous substrate,
NFe for exclusively Non-ferrous substrste.
③ Measured data is displayed.
④ BAT mark is displayed with 2 steps when battery has runn out for replacement.
⑤ Setted unit is displayed.
“μm” display automatically switches to “mm” display when it exceeds 999μm.
⑥ Backlight: The light goes on when Backlight is set to ON.

-7-◆ How to fit batteries① Raise the tilt stand.
② Open the battery lid on the rear of the main unit.
Press 「▽」 mark on the top of the lid and slide it down.
③ Insert batteries.
＋, ○－ for placement.
Ensure correct battery polarity ○④ Close the battery lid and put the tilt stand back.
※ When changing batteries and inadvently switch ing ON, but that is not defective at all.
Caution● Use specified and new (check battery-life) batrries or ones supplied in this package.
● An incorrect use of batteries may cause leakages, bursts. Do not intermingle new ones
with different tyepss of batteries.
● Take out batteries to store when not in use for a long absence, or that may cause
Leakages to breakdown.
● Keep batteries away off pets and children.
● Comply to the regulations and laws in your Local Authorities when disposing of batteries.

◎ About reading display
When placing batteries in the main unit, the messages and warning below on the screen may be displayed.
And these are not breakdowns, wait until the reading disappears with a beeping sound.
※ When connecting or disconnecting probe please switch Power source to OFF.

ＳＴＡＲＴ ＵＰＰＨＡＳＥＥＲＲＯＲ！

Hold probe
in the air.
Don’t touch iton anymetallic object．

Connect a probe
beforeswitched on.

Batteries have run out when the display on the main unit indicates the mark BAT listed below.
Replace with new batteries.

（AUTO）【In case of SFN-325 probe connected】
After Power source switched to ON at Auto mode,(AUTO) is displayed on the screen and when setting
exculively for Fe substrate, or NFe substrate,
for a ferrous substrate, NFe for aFe
non-ferrous substrate is displayed.

－
BAT

μm

Also, displayed ( Fe ) when SFe-probe is connected,
and ( NFe ) when SNFe-probe is connected.

-8-◆ How to connect, disconnect probes◆ Connect an optional, exclusive SWT probe to the main unit
Select one of the probes suited for your application.
◇ If the substrates made of ferrous material, please use a probe of ｢SFe｣ series
or a Dual type probe ｢SFN-325｣.
◇ If the substrates made of non-ferrous materials such as Aluminum,
please use a probe of ｢SNFe｣ series or a Dual type probe ｢SFN-325｣.
Insert a probe plug into the probe connector of the main unit.
Make sure of aligning the keyway, push the connector into place until the claps are locked.
※ If the direction is reversed, it will not enter.

Clasp

Probe body

Probe plug
Probe connector◆ Remove the exclusive probe from the main unit.
Pull off the probe carefully by bending inward clasps at the both ends of the probe bodyto release the clasps.
※ Do not pull off by force or it may cause damages.

CautionMake sure that Power switches to off when connecting or disconnecting the exclusive
SWT probes.
Or else, it may cause damages to connect or disconnect while Power is on.

-9-◆ How to hold probes
Cable

Pinch and hold this part using fingers(thumb and forefinger)
Black resinous ring

Tip to press against a measurement object
Quickly and calmly press perpendiculary against the object by grabing the probe as illustrated.
It beeps and the reading screen shows the measuring result.
When it does not beep, lift it 5～7 cm above the object and try again to take measurements.

◆ How to press a probe to an object
・ Keep the probe 5 cm or over away off metallic objects when not in use of measuring.
・ Press the tip of the probe perpendicularly against a measurement object.
※ Tilting may cause large errors.
・ Press the probe quickly and smoothly to objects.
※ A slow-acting press may cause large errors.

○

×
Probe

Measurement object

Measurement object

Caution● Do not smash or hit the probe against objects, or it may cause damages to probes and to objects.
● Do not scrape, scrub objects with the probe except in a special measurement.
Or it may break the tip of the probe and cause damages to the tip and surface of objects.

- 10 -

How to operate（１） How to switch power source
Press

key.
This message lasts for about 3 seconds.

ＳＴＡＲＴ ＵＰ
ＰＨＡＳＥ

Caution

Hold probe
in the air.
Don’t touch iton anymetallic object．

Hold the probe in air without operation when
the reading is on display. Or it may indicate「ERROR」 and automatically switch off Power.

The buzzer beeps.
The Backlighｔ mark is displayed when ON.
【In case of SFN-325 probe connected】
After Power source switched to ON at Auto mode,(AUTO) is displayed on the screen and when setting
exculively for Fe substrate, or NFe substrate,Fefor a ferrous substrate, NFe for a
non-ferrous substrate is displayed.

（AUTO）－
μm

Also, displayed ( Fe ) when SFe-probe is connected,
and ( NFe ) when SNFe-probe is connected.

（２） How to switch off
Press
key.
The buzzer beeps.

The message lasts for about 2 seconds.

POWER
OFF

Caution
Never remove a probe from a main unit
when Power is ON. Or the electric shocks
may damage the probe and the main unit

Terminating
phase

The buzzer beeps and this main unit is switched to OFF.

- 11 -

（３） Zeroing
After switching ON, it is capable of getting started on measurements and adjutments when the reading「START UP PHASE…」 disapeared.
※ Generally, the meter makes errors depending on material formation and shapes to be measured.
To minimize measurement errors and obtain as accurate results as possible please be sure of carryingout 2 kinds of adjustments of 【Zeroing】 and 【Calibration standard】 before measuring process.
※ Prepare the identical material and shape to a measuring object.
（This is designated as a 「Zero plate」.）
Press ZERO key.
The buzzer beeps.

CAL key changes to one data “deletion” function.

【ZERO cal.】1. Measure subst-rate several
times.
2. press ZERO key.
Press the probe to the Zero plate.
The buzzer beeps.
Zeroing is in process.

ZERO cal.

（Fe）

１
μm
Remove the probe from 「Zero plate」.

After pressing certain times or 20 times,
press ZERO key.

The measuring object is set for ferrous metal substrate.
Measured a mean value
When the measuring value results in largely off
the “0”, press CAL + ▼ key todelete the latest data out of measured values.
It indicates “—” to delete all data.
● Repeat a measuring processes, 1～20 times by pressing
the probe to the 「Zero plate」.
（A mean value is displayed whenever a probe is pressed）◆ When a measuring process reaches the 20th time,
the buzzer beeps, beeps 2 times and afterward newentry is no more accepted.

- 12 -

The buzzer beeps.

It stops the “deletion” function of CAL key.

（Fe）
The reading 【ZERO cal.】 in the upper left disappears.

０

Zeroing completed and the main unit becomes possible
to take measuring and adjusting operations.

μm● Press the probe to the 「Zero plate」 several times and make sure the measuring result indicatesin the neighborhood of “0”.
When the measured value results in largely off “0”, please try again zeroing from the beginning.
There is a case when calibration is not correctly made.
● “ＬＬＬＬ” displayed on the screen during a time of zeroing means that the calibration point heavily deviatesfrom the standard.
Please make sure that the metal substrate is not processed with other materials such as plating andrepeat the zeroing until a stable in the neighborhood of “0” is obtained.
※ After performing Zeroing, the previous 「Zeroing value」 is deleted, and the last entry of 「Zeroing value」
is stored.

- 13 -

（４） Calibration standard (CAL)● Prepare the 「Zero Plate」 used for 「Zeroing」.
● Prepare the 「Thickness standard」 that are the same thick as the measuring film or thicker than that.
● Place the 「Thickness standard」 on the 「Zero Plate」．
● Press CAL key.
The buzzer beeps.

CAL key changes to one data “deletion” function.

【Cal. w. foil】
1. Measure thick-ness of foil
several times.
2. With ▼ or ▲ . Ad
-just to thick-ness of foil
3. press CAL key.

Press again CAL key to interrupt Calibration
standard (CAL).

Press the probe to the Thikness standard on the Zero plate.
It beeps whenever pressing.
Calibration standard is in process.

cal. w. foil

（Fe）

１０２
μm

The measuring object is set for ferrous metal substrate.
Measured a mean value
When the measuring value results in largely off the“Thickness standard”, press CAL + ▼ key
to delete the latest data out of measured values.
It indicates “—” to delete all data.
● Repeat a measuring processes, 1～20 times by pressing
the probe to the 「Thickness standard」 on the 「Zero plate」.
（A mean value is displayed whenever a probe is pressed）◆ When a measuring process reaches the 20th time,
the buzzer beeps, beeps 2 times and afterward newentry is no more accepted.

Adjust the reading value to the Thickness
standard (in this case, 100μm) by pressing▲ or ▼ key.

cal. w. foil

（Fe）

１００
μm

Pressing ▲ or ▼ key interrupt the “deletion”
function of CAL ｋｅｙ．

Pressing ▲ key increases the reading value.
Pressing ▼ key decreases the reading value.
（Press and holding key turns to fast forwarding.）
Adjust the reading value to the Thickness standard.

- 14 -

After adjusting the reading value to the Thickness standard,press CAL key.
The buzzer beeps, 【cal. w. foil】 on the upper left disappears
and it returns to a measuring mode.

（Fe）

１００

This is a measusring mode.

μm● It is correct that numerical values measured by pressing the probe a few times to the 「Thickness standard」
on the 「Zero plate」 indicates the thickness in the neighborhood of the 「Thickness standard」.
● When the measured value results in largely off the 「Thickness standard」 please try again「Calibration standard」 from the beginning.
※ After performing Calibration standard , the previous 「Calibration standard value」 is deleted, and the lastentry of 「Calibration standard value」 is stored.

- 15 -

（５） Zeroing － in special cases －◎ In case of being painted as shown with multi-layers on the substrate there may be needs to measure
thicknesses of each layer. For example, measuring only the thickness of the 4th layer please zero as
an assumed 「Zero point」 at the surface of the 3rd layer stacked on the substrate and take 「Zeroing」,「Calibration standard」 as the aforementioned (3), (4).

Measuring the thickness of the 4th layer by「Zero point」 at the surface of the 3rd layer.

（4th layer）（3rd layer）（2nd layer）（1st layer）

Coating films

Substrate material◆ Releasing of special-case zeroing
When zeroing again on the substrate after having finished the above measurements and if the combined thicknessof 3 coating layers from 1st to 3rd exceeds 50μm, please zero the meter on the following procedures.
If the thickness of 3 combined layers is bellow 50μm, take the same procedure as usual zeroing to release.
● Prepare the identical material and shape to a measuring object.
（This is designated as a 「Zero plate」.）
Press ZERO key.
The buzzer beeps.

CAL key changes to one data “deletion” function.

【ZERO Cal.】
1. Measure subst-rate several
times.
2. press ZERO key.
Press the probe to the Zero plate.
The buzzer beeps, beeps, beeps 3 times.

- 16 -OFFSET.
To continue,press ZREO twice.

Press ZERO key.
The buzzer beeps.

Press ZERO key again.
The buzzer beeps.

【ZERO Cal.】
1. Measure subst-rate several
times.
2. press ZERO key.
Press the probe to the Zero plate.
The buzzer beeps.
Zeroing is in process.

ZERO cal.

（Fe）

１
μm

The measuring object is set for ferrous metal substrate.

Measured a mean value
When the measuring value results in largely off
the “0”, press CAL + ▼ key todelete the latest data out of measured values.
It indicates “—” to delete all data.

Remove the probe from 「Zero plate」.
● Repeat a measuring processes, 1～20 times by pressing
the probe to the 「Zero plate」.
（A mean value is displayed whenever a probe is pressed）
After pressing certain times or 20 times,
press ZERO key.

◆ When a measuring process reaches the 20th time,
the buzzer beeps, beeps 2 times and afterward newentry is no more accepted.

- 17 -

The buzzer beeps.

It stops the “deletion” function of CAL key.

（Fe）
The reading 【ZERO cal.】 in the upper left disappears.

０

Zeroing completed and the main unit becomes possible
to take measuring and adjusting operations.

μｍ● Press the probe to the 「Zero plate」 several times and make sure the measuring result indicatesin the neighborhood of “0”.
When the measured value results in largely off “0”, please try again zeroing from the beginning.
There is a case when calibration is not correctly made.
● “ＬＬＬＬ” displayed on the screen during a time of zeroing means that the calibration point heavily deviatesfrom the standard.
Please make sure that the metal substrate is not processed with other materials such as plating andrepeat the zeroing until a stable in the neighborhood of “0” is obtained.
※ After performing Zeroing, the previous 「Zeroing value」 is deleted, and the last entry of 「Zeroing value」
is stored.

- 18 -

（６） 2-point calibration in case it is difficult to perform ｢Zeroing｣
When it is difficult to adjust「Zeroing」in a usual method on a rough surface such as the Blast steel plate,
it is effective also to adjust by using 『two pieces of different thickness of the Thicknesses standard』.

Caution
It is not possible to use both this calibration method and other calibration ones together,or mixing them together.
Should were the methods taken, measuring results could be the wrong values.
● Prepare the same blast-steel-plate in material as the objective base and two pieces of different
thicknesses of the Thickness standards.
Please choose the suitable difference of thickness standards from the list below.
Predicting film thickness

Difference of thickness standard～49.9 μm50.0～99.9 μm
100.0～499.9 μm
500～999 μm
1.0～2.5 mm

10 μm or over
25 μm or over
50 μm or over
199 μm or over
0.5 mm or overPress and hold the ZERO key for 3 seconds.
The buzzer beeps.
CAL key changes to one data “deletion” function.

【2-foil’s cal】
Measure thinner
foil on metal
several times.
Afterward,
press

Stack the thinner 「Thickness standard」 on thesubstrate and press the probe on it.

ZERO key.

The buzzer beeps whenever pressing the probe.
2-foil calibration in process.

【 2-f. c. 】

（Fe）

２７
μm

The measuring object is set for ferrous metal substrate.
Measured a mean value
When the measuring value results in largely off the“Thickness standard”, press CAL + ▼ key
to delete the latest data out of measured values.
It indicates “—” to delete all data.

- 19 -

After pressing certain times or 20 times,
press ZERO key.

● Repeat a measuring processes, 1～20 times by pressing
the probe to the thinner 「Thickness standard」.
（A mean value is displayed whenever a probe is pressed）

The buzzer beeps, beeps 2 times.
◆ When a measuring process reaches the 20th time,
the buzzer beeps, beeps 2 times and afterward newentry is no more accepted.

【2-foil’s cal】
Use ▲ or ▲ ,ｔo set foil
thickness.
Afterward,
pressZERO key.

A press of ▲ or ▼ key makes the buzzer beep anda mean value to the last measurement appears on the reading.

【 2-f. c. 】

（Fe）

２７

Mean value

μm
Adjust the reading value to the Thickness standard (in this case, 25μm)
by pressing ▲ or ▼ key.

【 2-f. c. 】

（Fe）

２５
μm

Pressing ▲ key increases the reading value.
Pressing ▼ key decreases the reading value.
（Press and holding key turns to fast forwarding.）
Adjust the reading value to the Thickness standard.

After adjusting the reading value to the Thickness standard,press ZERO key.
The buzzer beeps.

- 20 -

【2-foil’s cal】
Measure thicker
foil on metal
several times.
Afterward,
press

Stack the thicker 「Thickness standard」 on thesubstrate and press the probe on it.

ZERO key.

The buzzer beeps whenever pressing the probe.

【 2-f. c. 】

（Fe）

１９８
μm
After pressing certain times or 20 times,
press ZERO key.
The buzzer beeps, beeps 2 times.

Measured a mean value
When the measuring value results in largely off the“Thickness standard”, press CAL + ▼ key
to delete the latest data out of measured values.
It indicates “—” to delete all data.
● Repeat a measuring processes, 1～20 times by pressing
the probe to the thicker 「Thickness standard」.
（A mean value is displayed whenever a probe is pressed）◆ When a measuring process reaches the 20th time,
the buzzer beeps, beeps 2 times and afterward newentry is no more accepted.

【2-foil’s cal】
Use ▲ or ▲ ,ｔo set foil
thickness.
Then, ready formeasure.
A press of ▲ or ▼ key makes the buzzer beep anda mean value to the last measurement appears on the reading.

【 2-f. c. 】

（Fe）

１９８

Mean value

μm- 21 -

Adjust the reading value to the Thickness standard (in this case, 200μm)
by pressing ▲ or ▼ key.

【 2-f. c. 】

（Fe）

２００
μm

Pressing ▲ key increases the reading value.
Pressing ▼ key decreases the reading value.
（Press and holding key turns to fast forwarding.）
Adjust the reading value to the Thickness standard.

After adjusting the reading value to the Thickness standard,press ZERO key.
Then the buzzer beeps, beeps, beeps 3 times.

【2-foil’s cal】
This is on display for about 0.5 seconds.

Ready formeasure.

The buzzer beeps.

（Fe）

２００

This is a measusring mode.

μm● It is correct that numerical values measured by pressing the probe a few times to the 「Thickness standard」
on the 「Zero plate」 indicates the thickness in the neighborhood of the 「Thickness standard」.
Take the procedure with each 2 sheets of the「Thickness standard」.
● When the measured value results in largely off the 「Thickness standard」 please try again「2-foils calibration」 from the beginning.
※ After performing 2-foils calibration, the previous 「Calibration value」 is deleted, and the lastentry of「2-foils calibration value」 is stored.

- 22 -

（7） How to delete calibration
Take the following procedures to delete calibration when the reading on the screen is locked or after
batteries replaced or when it becomes impossible to process 「Zeroing」, 「Calibration Standard」（CAL）.
※ This operation procedures are taken when SWT is faulty. Usually, take adjustments with the old adjusted
data stored. Automatically the old data is deleted and the new data is stored.
Hold ZERO key and press ▼ key.
The buzzer beeps, beeps 2 times.

ERASE？

※ Switch Power to OFF when intrruptting thedeletion of calibaration.

(ZERO cal.)&(cal. w. foil)
Press ▼ key.
The buzzer beeps, beeps 2 times.

ERASE(cal. data)

Deletion of calibration data is over andthe buzzer beeps, beeps 2 times.

（Fe）

１００
μm

The last measured substrate and value are displayed.
It becomes possible to take measurements andadjustment procedures of this main unit.
After deleting, take 「Zeroing」, 「Calibration standard」
procedures proceeding to measuring.

- 23 -

Measuring
Hang the meter through a strap over your wrist never to drop it.
When pressing the probe against the object with Power ON,
the buzzer beeps.

The measuring object is set for ferrous metal substrate.

（Fe）

１２５

A measured result is displayed.

μm
Each time a probe is pressed to an object the buzzer beeps and the measuring result is displayed.
◆ Measuring of Auto-selection by 「SFN-325」(1) Ferrous substarate ・・・・・・・・・・・・・・・・・・・・・・・・・・・・ measuring of film thickness at Fe mode.
(2) Non-ferrrous substarate ・・・・・・・・・・・・・・・・・・・・・・・ measuring of film thickness at NFe mode.
(3) Ferrous on Non-ferrous layered substarate ・・・・・・ measuring at Fe mode regadress of Fe thickness.
（1）

（2）

（3）

Film

Film

Film
FerrousFerrous

Non-Ferrous

Non-Ferrous(4) Non-ferrous on ferrous layered substrate(4-1) Layered thickness Non-Ferrous and Film, 3.0 mm or less※ ・・・・ measure thickness of layered Non-Ferrous
and Film in Fe mode.
※(4-2) Layered thickness Non-Ferrous and Film, 3.5 mm or over ・・・・ measure Film thickness in NFe mode.
（4-2）

（4-1）
Film
Non-Ferrous

About 3.0 mm or lessFilm

About 3.5 mm or over

Non-Ferrous
FerrousFerrousNote:● “HHHH” is displayed in a between area of 2 different layers and when special metals unidentified by Auto-selection.
● In case of adjusting by 「Calibration standard」 on Fe-substrate, 「Calibration standard」foils made of Non-Ferrous
metals such as BeCu can be used.
● In case substrates are not identified by Auto-selection mode, change to exclusive mode by 『corresponding mode
to a metal substrate』.
In case of an example of (4-1）, thickness of Film only can be measured at 「Non-Ferrous」 exclusive mode.
※ They may vary in compositions, characteristics, thicknesses of materials.

- 24 -

Function setting（１） Setting of Non-Interrupt Measurement mode
As illustrated on the right figure, this mode is used when taking
non-interrupt measurements for painting surfaces etc.
Film thickness values are taken/displayed while press/holding
probe on the object.

Substrate（Fe）
A measuring value is held (displayed) when pressing aprobe at standard mode, but in Non-Interrupt Measurementmode measuring values are taken/displayed about every
0.5 seconds interval while pressing a probe.

１２５
μm

Hold

ZERO key and press ▲ key.

The buzzer beeps, beeps 2 times.

This main unit has turned into 「Non-Interrupt Measurement mode」.
Data can be successively measured about 0.5 second intervals and the data is displayed with a beeping sound.

↓↑Trace of probe

↓
→

↑
→

→
→
Substrate

→

→

－

751
－

751
837

125

124

126

123

124

751

↑
Reaching to a measurable distance, the probe indicates the distance/thickness at the spot.
Display of measured values （displayed successively each 0.5 second interval）.
※ The Non-Interrupt function is stored when switching Power to OFF.
To return to the beginning, take the procedure of “Returning to the beginning” listed on the following page.

- 25 -

Caution
The moving measuring method at “Non-Interrupt Measuring Mode” may damage the measuring
surface or the probe tip because of frictions made by sliding the probe on the surface.
Please try fewer to take this method to minimize the frictions.

《Returning to the beginning》
To return 「Non-Interrupt Measurement mode」 to the beginning take the same procedures asat the initial setting.
HoldZERO key and press ▲ key.

The buzzer beeps, beeps 2 times.

「Non-Interrupt Measurement mode」 has been released and returned to the beginning.

↓↑
Trace of probe

↓
→

↑
→

→
→
Substrate

→

→

－

125
－

125
－

125

125

125

125

125

125

↑
Measured values are stored until a next measurement is taken.

- 26 -

（２） Setting of resolutions
The reading values up to 500μm can be switched in resolutions as below.
It is possible to read resolution measurement results by the 0.1μm unit in the thickness of （0～400μm）,
and by the 0.5μm unit in the thickness of （400～500μm）.
● Switch Power to OFF when Power is ON.
Hold CAL key and press
The buzzer beeps, beeps 2 times.

key for 3 seconds or over.

（Fe）

１２５．２

Displayed :0～400μm by the 0.1μm unit,
400～500μm by the 0.5μm unit.

μm※ This function is not released even if the Power source is switched to OFF.
When returning, take the operation procedures of “Returning to the beginning” as below.

《Returning to the beginning》
To return 「0.1μm, 0.5μm」 displayed resolutions to the beginning, take the same procedures as the above.
● Switch Power to OFF when Power is ON.
Hold CAL key and press
The buzzer beeps, beeps 2 times.

key for 3 seconds or over.

（Fe）

１２５

No display under a decimal place.
(The data is rounded off to nearest whole digit.)μm- 27 -

（３） Setting of units
This main unit is equipped with a function converting the unit to ｢mil｣.
● Switch Power to OFF when Power is ON.
● Press and hold
key for 10 seconds or over until the buzzer beeps, beeps 2 times.

（Fe）

４．９２

Displayed at the second decimal point.

Converted to the 「mil」 unit.

ｍｉｌ※ This function is not released even if the Power source is switched to OFF.
When returning, take the operation procedures of “Returning to the beginning” as below.

《Returning to the beginning》
To return 「mil」 unit to the beginning, take the same procedures as the above.
● Switch Power to OFF when Power is ON.
● Press and hold
key for 10 seconds or over until the buzzer beeps, beeps 2 times.

（Fe）

１２５
Converted to the 「μm」 or ｢mm｣ unit.

μm- 28 -

（４） Setting of Auto-Power-OFF function
When no entry of key operations and measuring procedures for 3 minutes, the main unit switcehes automaticallyto OFF to save battery. This function can be released by yhe following operations.
No entry for 3 minutes lasts, and then the buzzer beeps.

POWER
OFF

The message is displayed for about 5 seconds.

Terminating
phase
The buzzer beeps, and the main unit is switched to OFF.

《To Disable Auto-Power-OFF function》● Switch Power to OFF when Power is ON.
Hold ▲ key and press
key for 5 seconds or over.
The buzzer beeps., beeps 2 times.

Automatic
Switch OFF

It indicates 5 seconds.

【DISABLE】（AUTO）－

It returns to a measurable mode.
Power switches to OFF whenμm

※ This function is not released even if the Power source is switched to OFF.
To enable it, take the operation procedures of “To Enable Auto-Power-OFF function”.

- 29 -

key is pressed.

《To Enable Auto-Power-OFF function》● Switch Power to OFF when Power is ON.
Hold ▼ key and press
key for 5 seconds or over.
The buzzer beeps., beeps 2 times.

Automatic
Switch OFF

It indicates 5 seconds.

【ENABLE】（AUTO）－

It returns to a measurable mode.
Auto-Power-OFF function can be functioned.

μm

When no entry of key operations and measuring procedures lasts about for 3 minutes,
the buzzer beeps and the power is switched to OFF.

※ This function is not released even if the Power source is switched to OFF.
To disable it, take the operation procedures of “To Disable Auto-Power-OFF function”.

- 30 -

（５） Setting of corresponding mode to substrate with SFN-325 probe
When the SFN-325 probe is connected, the main unit automatically select a substrate for measuring objects,
but in addition to the Auto-selection mode 『Fe substrate exclusive mode』, 『NFe substrate exclusive mode』
are ready to use.
In case it is not possible to identify the substrate by Auto-selection mode, change the mode on the following
steps to take measurements with procedure as shown below.
※ When on Ex-factory, the unit is set to 「AUTO mode」.
※ This function is effective only when 「SFN-325」 probe is connected.
※ This finction is kept live even if the Power is switched to OFF.
【EX-factory setting】（AUTO）

Displays of Ferrous/Nonferrous Auto-selection modeare displayed by one of (AUTO), (Fe), (NFe) respectively.

－
μm
Press and hold CAL key for 3 seconds or over.
The buzzer beeps, beeps 2 times.

Fe

When moving to a Fe substrate exclusive mode,
is displayed.
Fe－
μm
Press and hold CAL key for 3 seconds or over.
The buzzer beeps, beeps 2 times.

NFe－

When moving to a NFe substrate exclusive mode,
NFe is displayed.

μm
By press and holding CAL key for 3 seconds or over,it switches: AUTO → Fe ➝ NFe ➝ AUTO ➝ Fe ・・・・・- 31 -

（６） Setting of Backlight
The LCD of this unit has a backlight function.
The bcklight can be used at the place which is dark and difficult to read messages on display.

《Lighting the Backlight》
Press and hold ▲key for 3 seconds or over.

The buzzer beeps, beeps 2 times
and the backlight goes on.

It is shown when the backlight is ON.

（AUTO）－
μm《Lighting out the Backlight》
Press and hold ▲key for 3 seconds or over.

The buzzer beeps, beeps 2 times
and the backlight goes off.

The mark and the backlight go off.

（AUTO）－μm※ This function is kept even if Power source switched to OFF.

- 32 -

Transferring data － Real time transfer －Transfer data to a PC (personal computer) by using a USB cable.
Download the USB transfer driver from our website.
※ Data is not transferred when the main unit is set to 「Non-Intrerrupt Measuring mode」.
Make sure beforehand that this main unit is set to 「is set to Normal (hold) Measuring mode」.
※ Even when the unit of this instrument is set to the 「mil」, the data transferred to the Transfer
software is displayed with the 「μm」 unit.

Outright transferring measured data
● Prepare for a PC side.
● Connect a USB cable (option) to a PC.

This is a USB cable connector.
Hook up a UBS cable (option) to USB cable connector and the other sode to PC.

（Fe）

１２５
μm

● Data is sent out with a beeping sound whenever a measurement is taken.

- 33 -

Note to improve measuring accuracy① Zero platePrepare the same material, thick and shape plate as the measuring object for Zeroing and Calibration
standard (CAL). Different materials may not bring about correct measuring results.
※ As accessories to probe (option), “Zero plates” are for testing purpose only.
Select a most optimal zero plate to meet actually measuring objects. (Please refer to page 12)② Thickness standard (foils)
Take Calibration standard (CAL) using a Thickness standard which is thicker or as thick as
the measuring films.
※ Use of a Thickness standard with a deviant thickness may cause errors.
Replace worn-out or bent plates with new ones. In case non-accessorized plates are necessary(over 16μm), contact a local sales office.
③ Quality of films to be measured
Magnetic metal contained in the films can correctly not be measured. In case of measuring elastic films,
place aThickness standard of 30～50μm thick on the object and subtract the thickness from the measuring
value to avoid errors to becaused by elastic dents.
④ Measurements of edges or angles
Magnetic fields in the neighborhood of the edges/the angles of a measuring object become uneven.
15～20mm closer part to the center of the object shall generally be measured.
Pay attention to protruded part, curved part or unexpectedly deformed part.
⑤ Measurements of rough faces
Roughness of a substrate, a measuring face affects measuring results.
Take a mean value by measuring several places at a time.
⑥ Measurements of stretched part on faces
In some case stretched, rolled part occurred on a substrate, which may cause measuring errors.
Take a mean value by measuring several places at a time.
⑦ Temperature
Operating temperature range is 0～40℃.
Especially, large temperature differences between a main unit and a probe causes measuring error.
⑧ Residual magnetism, stray magnetic fields
Pay attention to transportation method of electromagnets, residual magnetism on substrates or arc welding,those of which emit strong magnetic fields to cause measuring errors.

- 34 -

Trouble shooting
Before contacting us please check with the following points.
Symptoms

Points to check

Measures to be taken

No response upon press of「」 key.

Are batteries worn out?

Replace them with new ones (2 ea.).

No response after replacing
batteries and pressing a「」 key.

Something wrong inside a mainunit.

Contact us for repair.

Batteries is shorting.

They can be used for a while.
Prepare for new batteries.

Batteries have worn out.

Replace them with new ones.

Out of batteries.

Replace them with new ones.

Possibly pressing probe to
object too soon after pressing「」 key.

Hold probe in air, keeping it away
off measuring objects, metals
during a time of “START UP ・・・”
on screen.

Press 「」 key without
connecting probe.

Press 「」 key after being
sure of connecting probe.

BAT

BAT
BATTERY
is dead!
Replace all of them with
NEW BATTERY.

《Power ＯＦＦ》

ERROR！
Hold the probe
in the air.

《Power ＯＦＦ》
ERROR！
Connect a probe
beforeswitched on.

《Power ＯＦＦ》

- 35 -

Symptoms
TROUBLE！
The probe may
have trouble.
Change it tothe other one.

Points to check

Measures to be taken

Something wrong with probe.

Contact us for repair.

Something wrong with probe/
main unit.

Contact us for repair.

① Is USB cable connected
correctly ?
② Is PC side ready to operate ?

① Connect USB cable correctly.

① Does PC operate normally?

① Check if something wrong
with PC side.
② Contact us for repair.

《Power ＯＦＦ》
TROUBLE！
The probe and the
交換して下さい。
main unit may havetrouble.
Repairing needed.

《Power ＯＦＦ》
Unable to transfer data.

Sudden interruption of datatransfer.

② PC side is not faulty.
→ Something wrong withmain unit.

② (1) Install driver by our home
page correctly.
(2) Set Comport No.correctly.

Disclaimer
We are not liable for any damage to customers caused by the use or inability to use of this product (including built-in
software and data).

- 36 -

Specifications◆ Main unit
Items

Applications

Model name

Dual (Electromagnetic/Eddy current) type coating thickness meter
SWT-7000Ⅳ

Display method

Graphic LCD （data/message）, Backlight

RangesDepending on optional probes

Calibrations （CAL）

2-point calibration
Zero: metal substrate calibration
Calibration standard: metal substrate and thickness standard calibration

Additional functions① Switching measuring modes （hold/non-interrupt）② Switching display resolutions (depending on a connecting probe)③ Switching of units④ Auto Power Off （about 3 min.）, releasing and reactivating⑤ Setting for exclusive substrate mode
(only when SFN-325 probe is connected)⑥ Backlight⑦ Data output to PC (USB terminals)

Keys
Power
Operating Temperature
Accessories

OptionDimensions
Weight,ZERO ,

▲

,

▼

, CAL

3Ｖ ＤＣ Dry Battery （LR6×2）, Continuous operation hours about 50 hours※
AC adaptor※ Maximum (may vary depending on usage conditions)0 ～ 40℃ （Non-condensing）
Dry battery, Carrying case, Hand strap cord, Inspection certificate,CD (Instruction manual, USB driver, etc.)
For ferrous substrate probe （SFe）, For nonferrous substrate probe （SNFe）,
Dual ferrous/nonferrus substrate probe （SFN-325）,
AC adaptor, USB cable
72（Ｗ） × 32（Ｈ） × 156（Ｄ）mm
About 200g

- 37 -

◆ Probe (option)
Model

SFN－325

SFe-0．6Pen

SFe-0．6L

Measuring method

Dual (Electromagnetic/Eddy current) type（auto-selection for Fe/NFe）

Electromagnetic typeMeasuring range

Fe： 0～3．00mm, NFe： 0～2．50mm

0～600μm

1μm： 0～999μm
0．01mm： 1．00～3．00mm （Fe）
： 1．00～2．50mm （NFe）
Resolutions

by switching
0．1μm： 0～400μm
0．5μm： 400～500μm

by switching
0．1μm： 0～400μm
0．5μm： 400～500μm
Accuracies(to flat, smooth face)

1μm： 0～600μm

0～100μm： ±1μm or ±2％ of reading
101μm～3．00mm： ±2％ （Fe）
101μm～2．50mm： ±2％ （NFe）

0～100μm： ±1μm
or ±2％ of reading
101～600μm： ±2％

Probes

One point contact constant pressure typ
V-cut
about φ15×51mm

One point contact
One point contact
constant pressure typconstant pressure typ
about 8×13.5×119mm
V-cut（Minimum measuring
about φ5.5×92.5mm
Diameter φ16）

Options

V type probe adaptors※－

Thickness standards,
Zero plates for testing（Fe/NFe）

Thickness standards,
Zero plates for testing（Fe）

Fe： coating, lining, thermal spray film, plating(except electrolyte nickel plating）, etc.
on magnetic metal substrate like iron, steel.
NFe： relatively general use objects like insulated
films on non-magnetic metal substrate
like aluminum, cupper, etc.

Coating, lining, thermal spray film, plating(except electrolyte nickel plating）, etc.
on magnetic metal substrate like iron, steel.

Accessaries

Measuring objects※ 3 kinds of V type probe adaptors （less φ5、φ5～10、φ10～20）- 38 -

Small parts, narrowplaces, and so on.

Inside of a small
diameter tubes, narrowplaces, and so on.

◆ Probe （option）
Model

SFe-2．5※1/SFe-2．5L

SFe-2．5LwA

Measuring method
Measuring range

SFe-10Electromagnetic type0～2．50mm

0～10mm

0～20mm1μm： 0～999μm
0．01mm： 1～10mm

1μm： 0～999μm
0．01mm： 1～5mm
0．1mm： 5～20mm

1μm： 0～999μm
0．01mm： 1．00～2．50mm
Resolutions

Accuracies(to flat, smooth face)SFe-20by switching
0．1μm： 0～400μm
0．5μm： 400～500μm
0～100μm： ±1μm or ±2％ of reading
101μm～2．50mm： ±2％

Probes

One point contact
One point contact
constant pressure type
constant pressure type
V-cut
Measuring part：SFe-2．5：
about 24×27×56mm
about φ15×47mm
Full length （flexible）：
SFe-2．5L：
about 546～1530mm
about 18×22×67mm

Options

V type probe adaptors※2／－－

Accessaries

Thickness standards,
Zero plates for testing（Fe）

Thickness standards,
Zero plates for testing（Fe）,
Carring case

Measuring objects

Coating, lining, thermal
spray film, plating(except electrolyte
nickel plating）, etc.
on magnetic metal
substrate like iron, steel.

For coating thickness
on remote, unreachable
place of coating, lining
on magnetic metal
substrate like iron, steel.

※1： Heat-resistant （about 200℃） for probe Ｆｅ-2.5※2： 3 kinds of V type probe adaptors （less φ5、φ5～10、φ10～20）- 39 -

0～3mm： ±（5μm＋3％ of reading）
3．01mm or over： ±3％

One point contact
constant pressure type
V-cut
about φ21×47mm

One point contact
constant pressure type
V-cut
about φ35×55mm－－

Thickness standards,
Zero plates for testing（Fe）
On magnetic metal substrate like iron, steel

For relatively thicker
objects

For thick objects

◆ Probe （option）
Model

SNFe-2．0/SNFe-2．0L

Measuring method
Measuring range

SNFe-0．6

SNFe-5

SNFe-80～5．00mm

0～8．00mm

Eddy current type0～2．00mm

0～600μm

1μm： 0～999μm
1μm： 0～600μm
0．01mm： 1．00～2．00mm
Resolutions

by switching
0．1μm： 0～400μm
0．5μm： 400～500μm

1μm： 0～999μmby switching
0．01mm： 1～5mm
0．1μm： 0～400μm
0．5μm： 400～500μm

0～100μm： ±1μm
0～100μm： ±1μm
or ±2％ of readingor ±2％ of reading(to flat, smooth face)
101μm～2．00mm： ±2％ 101～600μm： ±2％
Accuracies

Probes

One point contact
constant pressure type
V-cut
SNFe-2．0：
about φ15×47mm
SNFe-2．0L：
about 18×22×67mm

Options

V type probe adaptors※／－

Accessaries

1μm： 0～999μm
0．01mm： 1～8mm

0～3mm： ±（5μm＋3％ of reading）
3．01mm or over： ±3％

One point contact
One point contact
One point contact
constant pressure type constant pressure type constant pressure type
V-cut
V-cut
V-cut
about φ13×45.5mm about φ20.5×47mm about φ35×59mm

―

―

―

Thickness standards, Zero plate for testing （NFe）
Insulated films on non-magnetic substarate metal like aluminum, cupper, etc.

Measuring objects

Relatively general use
objects

For high stability withnarrow bars, small
tubes, minute pieces※ 3 kinds of V type probe adaptors （less φ5、φ5～10、φ10～20）- 40 -For relativfely thicker objects

Reference (measurement principles)● Electromagnetic type
When metals approach to AC- magnetic fields emitted from probe, the metal and the magnet pull each other.
It makes the pulling force stronger as they come closer.
In other words, it makes the magnetic density higher as theycome closer. On the contrary, it weakens the magnetic
density as they move away from each other.
This symptom means that magnetism emitted from probe has
Higher Transferability when they come closer, and lower
Transferability when they move away from each other.
These levels of transferability of the magnetism co-relatewith thicknesses of films coated on substrates.
By analyzing correlations of transferability/less transferability(Reluctance), and thicknesses of the films on the substrates,
the correlated values can be converted to the thickness,
actually by measuring the Reluctance to be processed.
Because it is difficult to observe and measure magnetic volumes,
it is necessary that the Reluctance volumes be converted
to electric volumes using coils and methods of the Principle ofElectromagnetic Induction so that the measured values canbe processed and converted to the thickness values.
● Eddy Current TypeThe eddy current is induced on the surface of metals when metals approach to alternating current fields emitted from probe.
As the metal comes closer to the probe, the eddy current increases and the magnetic field density becomes high.
On the contrary, as the metal move away from the probe, the eddy current decreases and the magnetic density becomes
low: Correlations of between density of magnetic field and film thicknesses on the substrate are analyzed beforehand.
It measure the thicknesses by converting to the thickness value from themagnetic density measured through the above correlations.
Because it is difficult to observe and measure the density of a magnetic
field, it is necessary that a coil be put in magnetic fields
and converted to electric volumes for measurements
using the Principle of Electromagnetic Induction
so that the measured value can be processed andconverted to the thickness value. Generally in the eddy
current type, it varies in measurement range on nonmagnetic substrate by dividing substrates by a high-wave
transferable like Alumi and Copper and non-transferable
like irons to optimize the measurement methods.

- 41 -

◆ Products sold ◆Coating thickness meter, Pinhole detector,
Moisture meter, Concrete covermeter, Condensator,
Needle detector, Iron piece detector, Viscosity cup

SANKO ELECTRONIC LABORATORY CO.,LTD.
Head office: 1677 Hisasue, Takatsu-ku, Kawasaki 213-0026, JapanTokyo branch: Shibata Bldg., 2-6-4, Uchikanda, Chiyoda-ku, Tokyo 101-0047, Japan
TEL: 81-3-3254-5031 FAX: 81-3-3254-5038
Osaka branch: Wake Bldg., 1-11-9, Higashitenma, Kita-ku, Osaka 530-0044, Japan
TEL: 81-6-6881-1230 FAX: 81-6-6881-1232
Sendai branch: Bonheur Est, 2-5, Teppomachinaka, Miyagino-ku, Sendai 983-0868, Japan
TEL: 81-22-292-7030 FAX: 81-22-292-7033
Nagoya branch: Meihoku Bldg., 3-11-27, Kinjo, Kita-ku, Nagoya 462-0847, Japan
TEL: 81-52-915-2650 FAX: 81-52-915-7238
Fukuoka branch: 11-11, Naraya-cho, Hakata-ku, Fukuoka 812-0023, Japan
TEL: 81-92-282-6801 FAX: 81-92-282-6803
URL https://www.sanko-denshi.co.jp

E-mail info@sanko-denshi.co.jp