Hioki FT3470-51, FT3470-52 Instruction Manual

FT3470-51
FT3470-52

Instruction Manual

MAGNETIC FIELD HiTESTER

Be sure to read this manual
before using the instrument

When using the instrument

for the rst time

Names and Functions of Parts
Measurement Preparations

Measurement Procedure

July 2018 Revised edition 1
FT3470F981-01 18-07H

Safety Information

Troubleshooting



p.17 Troubleshooting



p.31



p.37

Error Indication







p.4

p.111
p.112

EN

Contents

Contents

Introduction ................................................................................1

Inspection ..................................................................................2

Safety Information .....................................................................4

Operating Precautions ...............................................................7

1 Overview 9

1.1 Product Overview ............................................... 9

1.2 Features ........................................................... 11

1.3 Measurement Example .................................... 13

1.4 Names and Functions of Parts ......................... 17

1.4.1 FT3470-50 Magnetic Field Tester .....................17

1.4.2 100 cm

1.4.3 3 cm

1.5 Definition of Measurement Items ...................... 23

1.6 Screen Configuration and Key Operation 

Work Flow ........................................................ 24

1.7 Measurement Work Flow ................................. 27

2

Magnetic Field Sensor ........................21

2

Magnetic Field Sensor ............................22

i

1

2

3

4

5

6

7

2 Measurement Preparations 31

2.1 Supplying Power .............................................. 31

2.1.1 Connecting the AC Adapter ..............................31

2.1.2 Inserting and Replacing Batteries ......................32

2.2 Connecting a Magnetic Field Sensor ............... 34

2.3 Turning the Power On and Off ......................... 35

3 Measurement Procedure 37

3.1 Measurement Preparations .............................. 37

3.2 Pre-measurement Check ................................. 39

3.3 Measuring Magnetic Flux Density .................... 40

FT3470F981-01

8

10

11

APP

Index

ii

Contents

3.4 Measuring Exposure Level (General Public) .... 43

3.4.1 Preparing for Exposure Measurements .............43

3.4.2 Exposure Level ..................................................45

3.4.3 Measurement Procedure ...................................47

3.5 Measuring Exposure Level (Occup.) ................ 50

3.6 Holding Maximum Value of the Resultant 

RMS Values ..................................................... 53

3.7 Checking and Deleting Saved Measurement 

Data .................................................................. 54

3.7.1 Checking Saved Measurement Data .................54

3.7.2 Deleting Saved Measurement Data ...................56

3.7.3 Deleting All Saved Measurement Data ..............58

4 Advanced Functions 59

4.1 Function for Saving Settings (Saving Set 

Modes and Measurement Ranges) .................. 59

4.2 Initializing Function (Returning Settings to 

Their Factory Defaults) ..................................... 60

4.3 Other Functions ................................................ 61

4.3.1 Setting Auto Power Off (Saving Battery Power) 61

4.3.2 Setting Audible Key Feedback ..........................63

4.3.3 Changing Unit Indication ...................................65

4.3.4 Setting the Slow Function ..................................67

4.3.5 Enable/disable the MEM. MODE key when Using 

MAX. HOLD or the Output Function ..................69

5 Using Application Software 71

5.1 Overview .......................................................... 71

5.2 Installing ........................................................... 72

5.2.1 Installing the Driver ............................................72

5.2.2 Installing Software .............................................82

5.3 Graphic Representation of Measurement 

Values .............................................................. 85

5.4 Transferring Recorded Data to a PC ................ 88

Contents

5.5 Configuring the FT3470-50 .............................. 91

5.6 Viewing Version Information ............................. 93

iii

6 Advanced Measurements 95

6.1 Outputting Waveform and Resultant RMS 

Values .............................................................. 95

7 Specifications 101

7.1 FT3470-50 Magnetic Field Tester .................. 101

7.1.1 Basic Specifications .........................................101

7.1.2 Measurement Accuracy ...................................102

7.1.3 Output Function ...............................................104

7.1.4 Functional Specifications .................................105

7.1.5 General Specifications .....................................105

7.1.6 Application Software ........................................106

7.1.7 Equations and Functions .................................107

7.2 100 cm2 Magnetic Field Sensor ..................... 109

2

7.3 3 cm

Magnetic Field Sensor ......................... 110

8 Maintenance and Service 111

8.1 Troubleshooting .............................................. 111

8.2 Error Indication ............................................... 112

8.3 Version Display .............................................. 112

8.4 Cleaning ......................................................... 112

8.5 Service ........................................................... 112

1

2

3

4

5

6

7

8

Appendix 113

Appendix 1 ICNIRP Guideline (Basic Restrictions) .. 113
Appendix 2 Coupling Factor in the ICNIRP Guidelines

.............................................................. 114

Appendix

Index

iv

Contents

Introduction

Thank you for purchasing the HIOKI “Model FT3470-51, -52 Magnetic
Field Tester.” To obtain maximum performance from the instrument,
please read this manual first, and keep it handy for future reference.

1

This instruction manual contains instructions for use of the device
with the 100 cm

Note

While every effort has been made to ensure that the content of this man­ual is correct, we would appreciate it if you notified your dealer or local
Hioki agent shou
tion.

Trademarks

Microsoft and Windows are either registered trademarks or trademarks
of M

crosoft Corporation in the United States and other countries.

i

Notation

• Unless otherwise specified, "Windows" represents Windows XP, Win­dows Vista, Windows 7.

• Dialog box represents a Windows dialog box.

• Menus, commands, dialogs, buttons in a dialog, and other names on
the scr

een a

Mouse Operation

Click: Press and quickly release the left button of the mouse.

Right-click: Press and quickly release the right button of the mouse.

Double click: Quickly click the left button of the mouse twice.

Drag: While holding down the left button of the mouse, move the

Activate: Click on a window on the screen to activate that window.

2

and 3 cm2 Magnetic Field Sensor.

ld you notice any unclear, incorrect or missing informa-

nd the keys are indicated in brackets.

hen re

mouse and t
sen item in the desired position.

lease the left button to deposit the cho-

2

3

4

5

6

7

8

9

10

11

12

13

2

FT3470-50 (1) USB cable (1)CD (PC application

software) (1)

LR6 alkaline battery (4)

Instruction manual

(1)

FT3470-51 Magnetic Field Tester

100 cm2 Magnetic Field Sensor(1)

9445-02 AC Adapter (1)

Carrying Case (1)

Inspection

Verifying Package Contents

When you receive the instrument, inspect it carefully to ensure that no
damage occurred during shipping. If damage is evident, or if it fails to
operate according to the specifications, contact your dealer or Hioki rep­resentative.

FT3470-50 (1) USB cable (1)CD (PC application

software) (1)

LR6 alkaline battery (4)

Instruction
manual (1)

FT3470-52 Magnetic Field Tester

100 cm2 Magnetic Field Sensor (1)

3 cm

2

Magnetic Field

Sensor (1)

9758 Extension Cable

(1) 9759 Output Cable (1) Carrying Case (1)

9445-02 AC Adapter (1)

3

2

3

4

5

This instrument has been calibrated to operate with the provided mag­netic field sensor and should be used only with this sensor. Thus if
multi

ple instruments are used, Before use make sure that the match­ing number (up to the hyphen) on the tester and the sensor are identi­cal.

Shipping precautions

Use the original packing materials when transporting the instrument, if
possible.

6

7

8

9

10

11

12

13

4

Safety Information

This instrument is designed to comply with IEC 61010 Safety
Standards, and has been thoroughly tested for safety prior to
shipment. However, mishandling during use could result in injury
or death, as well as damage to the instrument. Using the instru­ment in a way not described in this ma
vided safety features.
Be certain that you understand the
in the manual before use. We disclaim any responsibility for acci­dents or injuries not resulting dire

This manual contains information and warnings essential for safe opera­tion of the instrument and for maintaining it in safe operating condition.
Before using

Safety Symbols

nual may

instruct

from instrument/ defects.

ctly

it, be sure to carefully read the following safety precautions.

In the manual, the symbol indicates particularly impor­tant information that the user should read before using
the instrum

The symbol printed on the instrument indicates that
the user should refer to a corresponding topic in the man­ual (marked with the symbol) before using the relevant
function.

ent.

negate the pro-

ions and precautions

Indicates DC (Direct Current).

Indicates AC (Alternating Current).

The following symbols in this manual indicate the relative importance of
cautions and warnings.

Indicates that incorrect operation presents an
ext

r

eme hazard that could result in serious injury or

death to the user.

Indicates that incorrect operation presents a signifi­cant hazard that could result in serious injury or
de

ath to the user.

Indicates that incorrect operation presents a possi­bility of injury to the user or damage to the instru­ment.

Indicates advisory items related to performance or
cor

rect operation of the instrument.

Symbols for Various Standards

WEEE marking:
This symbol indicates that the electrical and electronic
appliance is pu
and producers of the Member States are required to dis­play it on the appliance under Article 11.2 of Directive
200

2/96/EC (

Indicates that the product conforms to regulations set out
by the EU Directive

t on the EU market after August 13, 2005,

WEEE).

.

5

2

Other Symbols

 p. )

*

Indicates the location of reference information.

Indicates that descriptive information is provided below.

Indicates a prohibited action.

3

4

5

6

7

8

9

10

11

12

13

6

Measurement Categories

The applicable measurement category is determined by the input mod­ule being used.
To ensure safe operation of measurement instruments, IEC 61010
est
rized as CAT II to CAT IV, and called measurement categories.

s safety standards for various electrical environments, catego-

ablishe

CAT II : Primary electrical circuits in equipment connected to an AC

CAT II covers directly measuring electrical outlet receptacles.

CAT III : Primary electrical circuits of heavy equipment (fixed installa-

CAT IV : The circuit from the service drop to the service entrance, and

Using a measurement instrument in an environment designated with a
higher
could result in a severe accident, and must be carefully avoided.
Use of a measurement instrument that is not CAT-rated in CAT II to CAT
IV

measurement applications could result in a severe accident, and must

be carefully avoided.

Do not touch high voltage lines with the
sensor or the instrument. They are not
insulated and the application of high volt­age to this instrument may expose testing
p

ersonnel to high voltage that may at

worst lead to electric shock and death.

electrical
appliances, etc.)

tions) connected directly to the distribution panel, and feeders
from

to
(distribution panel).

-numbered category than that for which the instrument is rated

outlet by a power cord (portable tools, household

istribution panel to outlets.

the d

e power meter and primary overcurrent protection device

th

7

Operating Precautions

Follow these precautions to ensure safe operation and to obtain the full
benefits of the various functions.

Preliminary Checks

• Before using the instrument the first time, verify that it operates nor­mally to ensure that the no damage occurred during storage or ship­ping. If you find any damage, contact your dealer or Hioki
repr

• Before using the instrument, make sure that the insulation on the
cables is
exposed. Using the instrument in such conditions could cause an elec­tric shock, so contact your dealer or Hioki representative for repair.

Installation Environment

Operating temperature/humidity range: 0°C to 40°C, 80%RH or less 
(no condensation)
Temperature and humidity for guaranteed accuracy: -10°C to 50°C,
80%RH or

Avoid the following locations that could cause an accident or damage to the instru­ment.

Exposed to direct sun­light
Exposed to high temper­ature

esent

ative.

undam

less (no

aged and that no bare conductors are improperly

condensation)

In the presence of corro­sive or explosive gases

2

3

4

5

6

7

Exposed to water, oil,
ot

her chemicals, or sol­vents
Exposed to high humid­ity or condensation

Exposed to high levels of

a

rticulate dust

p

To avoid damage to the instrument, protect it from physical shock when
transporting and handling. Be especially careful to avoid physical shock
from dropping.

Exposed to strong elec­tromagnetic fields
Near electromagnetic
ra

tors

dia

Subject to vibration

8

9

10

11

12

13

8

Connections

Connect only designated devices to the instrument terminals. To pre­vent damage, do not apply a voltage that is outside the specified range
to the inst

Handling

• The instrument and the 100 cm2 and 3 cm2 Magnetic Field Sensors
are built mainly from nonmagnetic metals and contain hardly any
magnetic materials. Thus if the instrument is heated by an all metal IH
and other induction heating system the sensor may melt or be dam­aged, because of the nonmagnetic metals.

• The 100 cm
that may melt if brought into contact with a hot measurement object
(cookpot or other hot object).

• Do not expose cables to excessive stress as they may break. Espe­cially, the 9758 Extension Cable and 9759 Output Cable should be
han

dled with

Handling with the CD

• Always hold the disc by the edges, so as not to make fingerprints on
the disc or scratch the printing.

• Never touch the recorded side of the disc. Do not place the disc
directly on anything hard.

• Do not wet the disc with volatile alcohol or water, as there is a possi­bility of the label printing disappearing.

• To write on the disc label surface, use a spirit-based felt pen. Do not
use a ball-point pen
scratching the surface and corrupting the data. Do not use adhesive
labels.

• Do not expose the disc directly to the sun's rays, or keep it in condi­tions of high temperature or humidity, as there is a danger of warping,
with co

• To remove dirt, dust, or fingerprints from the disc, wipe with a dry
cloth, or use a CD cleaner. Always wipe radially from the inside to the
outside, and do no wipe with circular movements. Never use abra­sives or solvent cleaners.

• Hioki shall not be held liable for any problems with a computer system
tha

t arise

purchase of a Hioki product.

rument.

2

and 3 cm2 Magnetic Field Sensors have a plastic housing

care.

or hard-tipped pen, because there is a danger of

nseque

nt loss of data.

s from the use of this CD, or for any problem related to the

1.1 Product Overview

• Magnetic field exposure refers to the exposure that may affect human

health. 
The FT3470-51, -52 Magnetic Field Tester can be used to measure
conformance to Guidelines for Limiting Exposure to Time-varying
Electric, Magnetic, and Electromagnetic Fields (ICNIRP 2010)
and a standard for measuring magnetic fields of electrical house-

hold appliances (IEC/EN62233).

See For more information on ICNIRP: "Appendix" (P.113)

• This tester can measure magnetic flux density and magnetic field
exposure generated by products manufactured at a customer site or
produced by devices in a customer environment. 
It can measure magnetic flux density and magnetic field exposure
generated by products manufactured at a customer site or produced
by devices in a customer environment.

Overview 1

9

1

1.1 Product Overview

The FT3470-51, -52 Magnetic Field Tester is designed to measure mag­netic flux density and level of magnetic field exposure.

• It can be used to assess conformance to ICNIRP 2010 and IEC/
EN62233 and in research on magnetic field exposure.

• The instrument is designed to be used with the 100 cm
Magnetic Field Sensors.
Make sure that the matching number (up to the hyphen) on the tester
and the mag

netic field sensor are identical.

2

and 3 cm

2

2

3

4

5

6

7

8

9

10

11

12

13

10

How big is the magnetic field?

1.1 Product Overview

Functions Functions in detail Reference

Basic Magnetic flux

Application Output

density

measurements

Exposure

level

measurements

functions

Application

software use

*1: Available units are T, G, and A/m and the magnetic permeability of air being 4×10-7 H/m,

*2: This value is obtained by inverse filtering of

3.3 (P. 40)

Measuring the magnetic flux density of appli-

*1

ances and environments

Magnetic flux density (10 Hz to 400 kHz):

For wide range measurements of magnetic flux density

Magnetic flux density (10 Hz to 2 kHz):

For magnetic flux density of power frequencies

Magnetic flux density (2 kHz to 400 kHz):

For magnetic flux density of high frequencies other
t

han power fr

*2

Measuring the exposure level of appliances
and environments

Exposure level (general public): 
This level is used for measuring exposure to mag­netic fields prevalent in environments where we can
a

sume the presence of people of all age groups and

s
health conditions (people who are not normally
aware of the presence of magnetic fields) as well as
exposure to magnetic fields generated by applianc­es and other consumer devices manufactured to
c

onform to
This level corresponds to the general public expo­sure level in ICNIRP 2010.

Exposure level (occupational): 
This level applies to measurements of exposure to
ma

g
adults only who are generally exposed under
known conditions and are trained to be aware of
potential risk and to take appropriate precautions.
This level corresponds to the occupational expo­sure level in ICNIRP 2010.

equencies

IEC/EN62233 and other standards. 

netic fields in environments that involve

A function that makes it possible to output

See

See

See

3.4 (P. 43)

3.5 (P. 50)

6.1 (P. 95)



waveforms and resultant RMS value of mag­netic flux density or exposure levels.

• This function allows you to do the following:

See 5 (P. 71)

• to set up the FT3470-50 from your PC

• to upload data saved on the FT3470-50 to your

PC

• to monitor RMS values

the relationships between the different units are as follows: 1T=10

the ICNIRP2010 Guideline. 
Use the exposure level figures indicated for the general public in IEC/EN62233 or
Si

the reference levels for magnetic field exposure indicated in ICNIRP2010 for

nce
occupational exposure is approximately five times that of general public exposure,
the indicated values for occupational exposure is roughly a fifth of general public ex­posure.

See "Appendix" (P.113)

magnetic flux density values stated in

4

G, 1 A/m=4×10-7 T.

1.2 Features

100 cm2 Magnetic Field Sensor

3 cm

2*

Magnetic Field Sensor

*

11

1.2 Features

Easy to view LCD display

The large LCD display makes for ease of viewing measurement values.

Automatic recognition of magnetic field sensors

Two magnetic field sensors of different sizes, the 100 cm
are available for the tester

The 100 cm2 sensor, intended for normal application, has a cross-sec­tional area of 100 cm
The 3 cm

for measuring detailed distribution.

The FT3470-50 automatically recognizes an attached sensor so there is
no need to set a conversion rate whenever a sensor is connected.

*: The 3 cm

2

and 3 cm2*,

2

2

sensor* has a cross-sectional area of 3 cm2 and is designed

2

Magnetic Field Sensor only ships with the FT3470-52.

.

1

2

3

4

5

6

7

Switchable measurement methods

The tester allows the user to switch between the following measurement
functions

exposure (

Switchable axis

The user can switch between different axes (X-axis, Y-axis and Z-axis
and

result

8

/modes: magnetic flux density, exposure (General Public), and

Occup.).

ant RMS values) in each measurement mode

9

10

11

12

13

12

1.2 Features

Waveform and resultant RMS value output

Both waveform ( ) and resultant RMS ( ) output can be
selected.
By connecting the instrument to an oscilloscope or recorder with the
9759 O

utput Ca

RMS values.

Waveform out­put :

Resultant RMS
value output :

ble, you can observe waveforms and record resultant

enables measurement of magnetic field waveforms when
the tester is connected to an oscilloscope or recorder.

permits recording of resultant values on a recorder or log­ger, which is convenient for long-term measurements.

Memory function

Records up to 99 measurement data.

Function for saving settings

Measuring conditions can be stored to enable quick access to the same
oper

nditions each time you power up.

ating co

Dual power supply

The tester can be powered both by battery and AC power to enable
measu

ements in the field as well as permitting installation for long-term

r

measurements.

1.3 Measurement Example

Be sure to measure areas that
generate maximum exposure to
magnetic fields.

In this example, r1 = 30 cm.

DUT (device under test)

13

1.3 Measurement Example

This section provides a measurement example using this tester.

Objective: to measure magnetic field exposure generated by products to determine

whether they pass or fail the requirements to obtain a CE marking.

Measurement location : Anechoic chambe
Device under test : exposure le

Measurement location, distance*2: around, 30 cm

State of device under test *2 : Half-filled with water, and maxi-

Measurement time : a few

Storage of measurement data: tester
Required equipment :

*1: A location where magnetic fields other than that generated by the DUT is minimal

and where there are no magnetic fields or metal objects in the vicinity that could be
affected by the measurements. An anechoic chamber is not required if the above
conditions can be met. 
Measurements performed in an anechoic chamber should be performed at a cer­tain distance from the walls, which are made of a magnetic material.

*2 : Since these parameters depend on the measuremen

to IEC/EN62233 or other relevant specifications.

*3 : This value comes from IEC62233 Ed.1.0. Note that it may change when the stan-

dard is revised.

fields generated by an electric rice cooker

seconds

FT3470-50

100 cm2 or 3 cm2 Magnetic field sensor
Batteries or AC adapter
PC



USB cable

r*1

vel (general public) of magnetic

*3

mum heat setting

at each measurement point

memory and PC memory





arget, it is necessary to refer

t t

2

3

4

5

6

7



8

9

10

11

1

12

13

14

1

Connect batteries in the battery
compartment on the rear and fold
out the stand.

Plug the adapter into the AC
adapter terminal and the
mains plug into an AC wall
outlet.

Connect the sensor in the sensor
terminal.

USB cable

1.3 Measurement Example

Preparations

1. Insert batteries in the FT3470-50 or connect it to the AC adapter and
fold out the back stand. Also connect the 100 cm

2

or 3 cm2 Magnetic

Field Sensors.

2. Install the driver and the PC software on a PC.

3. Connect the tester to the PC using a USB cable.

15

2

Read the indicated value and press
to save the measurement data.

3

1.3 Measurement Example

Setup, measurements and data storage

1. Select Exposure (general public) measurement function/mode (Gen­eral Public Exposure).

2. Select Auto range. ([AUTO] on the display lights.)

3. Place the magnetic field sensor near the DUT. (A distance of 30 cm if
the DUT is an electric cooker)

1

2

3

4

4. Read the indicated value and store the measurement data in the tes­ter (STORE).

Processing data after measurement

1. Start up the Application software (Data Viewer for FT3470) and trans­fer the measurement data stored in the instrument to the PC.

2. Analyze the data transferred to the PC using Excel or other spread­sheet program.

5

6

7

8

9

10

11

12

13

16

Measurement data ± accuracy

< 100%

*

START

Calculate the induced current

density with the human body

model and a numerical analysis.

Evaluation goes below the basic

restrictions.

Does not comply

Complies

Yes

100%

Exceeds

Yes

(Measurement data ± accuracy) ×

coupling factor (0 to 1)

100%*

100%

Yes

1.3 Measurement Example

Analysis flow chart

* : Whether tester accuracy should be added or subtracted depends on the standpoint

of testing personnel. Refer to the instructions in the IEC62233 standards. 
For details on the coupling factor, refer to Appendix 2 "Coupling Factor in the IC­NIRP Guidelines" (P.114).

*2 : This cannot be measured by a magnetic field tester.

1.4 Names and Functions of Parts

Front

Sensor terminal

Connect the 100 cm2, 3 cm

2

Magnetic Field Sensor

or a 9758

Extension Cable.

See 2.2 (P. 34)

AC adapter terminal

Connect the AC adapter here.

See 2.1.1 (P. 31)

Output terminal

Connect a 9759 Output Cable.

See 6.1 (P. 95)

USB terminal

Connect a USB cable.

Display

See (P. 20)

Keys

See (P. 18)

Battery 
compartment lid

Open to insert or replace bat­teries.

See 2.1.2 (P. 32)

Back

Camera tripod screw

Attach a commercially avail­able camera tripod here.

When using the
handle as a stand
for the device, do
not press down too
hard on the device
as this can damage
the handle.

Matching number

Use the tester with a sensor
that has an identical matching
number (up to the hyphen).

Stand

When setting up the meter on a desk or other flat surface fold
out the stand to make sure that the magnetic field sensor
does not come into contact with the surface underneath.

17

1.4 Names and Functions of Parts

1.4.1 FT3470-50 Magnetic Field Tester

1

2

3

4

5

6

7

8

9

10

11

12

13

18

1

8

7

6

5

4

3

2

keys

1.4 Names and Functions of Parts

Keys Description

1

2 Switches magnetic field measurement function/modes as show below:

3

4

5

6 Shows saved measurement data.

• Turns the power on and off.

• Holding down while turning on the power initializes the saved measurement

data and the saved settings (returning them to their factory defaults).

See For details on the factory defaults: 4.2 (P. 60)

• Holding down the while powering up allows you to set the Auto

power off, audible key feedback, unit indication, slow function, and
ME

M.MODE key enable/disable.

See 4.3 (P. 61)

Magnetic flux density (10 Hz to 400 kHz)  magnetic flux density (10 Hz to 2 kHz) 
magnetic flux density (2 kHz to 400 kHz)  exposure level (General Public)  expo­sure level (Occup.)

See 3.3 (P. 40)

• Switches between Auto and Manual ranges.
Manual range:

 r2 (200 T)  r3 (2 mT) AUTO...

T)

(exposure level mode) AUTO
Auto range: automatically

• Switches measurement ranges durin

See 3.3 (P. 40)

• Magnetic flux density switching is performed by converting from T (Tesla).
For this reason, for example, 1.592 A/m is the ma
the 1.6 A/m range.

• Use to output function.

• Switches between the following output functions. 

Waveform output  resultant RMS value output  OFF...

OFF

• This mode disables the auto power off mode.

• The waveform output cannot be configured in exposure level function.

See 6.1 (P. 95)

• Holds the maximum value. (Each new maximum value updates the indicated

.)

value

• Press this key again to unhold.

See 3.6 (P. 53)

See 3.7 (P. 54)

 magnetic field density (10 Hz to 400 kHz)  ...

(magne

tic flux density mode) AUTO  r0 (2 T) r1 (20

 r0 (20%) r1 (200%)  AUTO...

selects appropriate range during measurements.

g manual range.

ximum indicated value in

1.4 Names and Functions of Parts

X2+Y2+Z

2

Keys Description

7

8 Switches the displayed axis as shown below:

• Stores measurement data in internal memory.

• Deletions displayed measurement data when viewing memory data.

• This key becomes invalid during MAX.HOLD.

See 3.7 (P. 54)

XYZXYZXYZ...(XYZ indicates a resultant RMS value

19

*

) *:

1

See 1.5 "Definition of Measurement Items" (P.23)

2

3

4

5

6

7

8

9

10

11

12

13

20

8

76

5

3, 4

1, 2

Magnetic flux density Function

Displays the selected magnetic flux density
mode.

See 3.3 (P. 40)

Exposure level Function

Displays the selected exposure level modes as
follows:General Public
Occup. (Occupational)

See 3.4 (P. 43) ,3.5 (P. 50)

Memory 
View Function

Displays saved data.

See 3.7 (P. 54)

9
10

11

12

Display

Note: Icons not described below cannot be used with this tester.

X2+Y2+Z

2

1.4 Names and Functions of Parts

Icons Description

1 Lights when Auto Range is selected.

2 Lights when measurement d
3 Shows displayed axis. (XYZ indicates a resultant RMS value*.) 

*

4 Lights when holding a maximum value.

5 Lights when battery voltage becomes too low. (Replace the batteries when

6 Lights during output of waveform.

7 Lights during output of a resultant RMS value.

8 Lights when automatic power off is on.

9 Indicates the number of the measurement data stored in memory

10 Indicates that a measurement value is an RMS value. 

11 Indicates the unit used for indicating exposure level.

12

See 1.5 "Definition of Measurement Items" (P.23)

See 3.6 "Holding Maximum Value of the Resultant RMS Values" (P.53)

this icon lights.)

See "Function for checking low battery voltage" (P.38)

See 3.7 "Checking and Deleting Saved Measurement Data" (P.54)

Flashes during the slow function is on.

See 3.4 "Measuring Exposure Level (General Public)" (P.43) ,

• Indicates the unit used for indicating

See 3.3 "Measuring Magnetic Flux Density" (P.40)

3.5 "Measuring Exposure Level (Occup.)" (P.50)

ata is being stored.

magnetic flux density.

.

1.4 Names and Functions of Parts

Output connector

Connects to the FT3470-50
sensor terminal.

See 2.2 (P. 34)

Sensor

Z

YX

X-axis coil

X-axis

Y-axis coil

Y-ax is

Z-axis coil

Z-axis

The dotted line indicates the
X-axis coil.

The dotted line indicates the
Y-axis coil.

The dotted line indicates the
Z-axis coil.

Matching number

Use the tester with a sensor
that has an identical matching
number (up to the hyphen).

1.4.2 100 cm2 Magnetic Field Sensor

21

1

2

3

4

5

6

7

8

9

10

11

12

13

22

Sensor

Z

YX

X-axis

Y-ax is

Z-axis

The line indicates the
X-axis coil.

The line indicates the
Y-axis coil.

X-axis coil

Y-axis coil Z-axis coil

Output connector

Connects to the FT3470-50
sensor terminal.

See 2.2 (P. 34)

The line indicates the Z-axis coil.

Matching number

Use the tester with a sensor
that has an identical matching
number (up to the hyphen).

1.4 Names and Functions of Parts

1.4.3 3 cm2 Magnetic Field Sensor

1.5 Definition of Measurement Items

)(tx

)(ty

)(tz

)(ˆtx

)(ˆty

)(ˆtz







t

Tt

dttx

T

tx

2

)}({

1

)(

ˆ







t

Tt

dtty

T

ty

2

)}({

1

)(

ˆ







t

Tt

dttz

T

tz

2

)}({

1

)(

ˆ

)(ˆtR



222

)(

ˆ

)(

ˆ

)(

ˆ

)(

ˆ

tztytxtR 

)(ˆtR

)(ˆtx

)(ˆty

)(ˆtz

)(tx

)(ty

)(tz

23

1.5 Definition of Measurement Items

Instantaneous values obtained from the X-axis, Y-axis and Z-axis sen-

sors at time t are referred to as, respectively, , and while

the RMS values are respectively , and . The RMS values
used by this tester represent the values shown below. (T refers to the
RMS in

tegration time and is approximately 0.12 s when the slow function

is turned off and about 1 s when the function is on.)

A resultant RMS value represents the following.

• The IEC/EN622336 standards state that "Transient magnetic fields
with a duration of less than 200 ms, e.g. during switching events, are
disregarded. If a switching action occurs during the measurements, the
measurement has to be repeated."
Transient responses may not be correctly measured when slow func­tion is off. Make a new measurement if this happens.

• To make a 1 s measurement that includes transient responses, mea­sure using the slow function.

See 4.3.4 "Setting the Slow Function" (P.67)

The above can be summarized as shown below.

Resultant RMS value:

RMS value (per axis):

Instantaneous value (per axis):

*:The waveform output ( ) cannot be configured in exposure level

function.

Resultant RMS and RMS values (for each axis) can be viewed on a PC
using the application software (on CD) supplied with the tester.

See 5.1 "Overview" (P.71)



, , :

, , :

LCD reading, RMS

:

output ( )

LCD reading

Waveform output*
( )

1

2

3

4

5

6

7

8

9

10

11

12

13

24

Magnetic flux density function
10 Hz to 400 kHz mode

Exposure level
(Occup.) mode

Measurement function/mode

Press .

Press .

Press .

Press .

Press .

Magnetic flux density function 
10 Hz to 2 kHz mode

Magnetic flux density function 
2 kHz to 400 kHz mode

See 3.3 (P. 40)

See 3.3 (P. 40)

See 3.3 (P. 40)

See 3.4 (P. 43)

See 3.5 (P. 50)

indicates selected mode.

Magnetic flux density

mode

Exposure

level mode

Exposure level
(General Public) mode

1.6 Screen Configuration and Key Operation Work Flow

1.6 Screen Configuration and Key Opera­tion Work Flow

1.6 Screen Configuration and Key Operation Work Flow

Screens for verifying and setup

Screen name Screen access method Screen displayed

Check Saved

Measurement Data

Press in each measure-

ment function.

See 3.7.1 (P. 54)

Set Auto Power Off When the power is off, hold

down and and

press or to turn

on [APS].

See 4.3.1 (P. 61)

Set Audible Key

Feedback

When the power is off, hold

down and . And

press or to turn

on [BEEP].

See 4.3.2 (P. 63)

25

1

2

3

4

5

6

7

8

9

10

11

12

13

26

Screen name Screen access method Screen displayed

Change Unit Indication When the power is off, hold

down and . And

press or to turn

on [

Unit].

See 4.3.3 (P.65)

Set Slow Function When the power is off, hold

down and . And

press or to turn

on [

SLou].

See 4.3.4 (P. 67)

Enable/disable the

MEM. MODE key
when using MAX.

HOLD or the output

function

When the power is off, hold

down and . And

press or to turn

on [

MEM.M].

See 4.3.5 (P. 69)

QuickSet

The slow function is on in
Exposure level (General
Public) mode when power­ing on.

When the power is off, hold

down and .

See (P. 44)

1.6 Screen Configuration and Key Operation Work Flow

1.7 Measurement Work Flow

27

1.7 Measurement Work Flow

This section describes measurement work flow.

Supplying power

1.

See 2.1.1 "Connecting

the AC Adapter"
(P.31)

See 2.1.2 "Inserting

and Replacing
Batteries" (P.32)

Connect a mag-

2.

netic field sensor.

See 2.2 "Connecting a

Magnetic Field
Sensor" (P.34)

1

2

3

4

5

6

7

8

9

10

11

12

13

28

1.7 Measurement Work Flow

Turn on the power.

3.

See 2.3 "Turning the

Power On and Off"
(P.35)

4. Pre-measurement check

See 3.2 "Pre-measurement Check" (P.39)

Measuring mag-

5.

netic fields.

See 3.3 "Measuring

Magnetic Flux
Density" (P.40)

Transfer the mea-

6.

surement data to a
PC and use the
application soft­ware to analyze
the

data.

See 5.3 "Graphic Rep-

resentation of
Measurement Val­ues" (P.85)

See 5.4 "Transferring

Recorded Data to
a PC" (P.88)

29

1.7 Measurement Work Flow

1

2

3

4

5

6

7

8

9

10

11

12

13

30

1.7 Measurement Work Flow

2.1 Supplying Power

9445-02 AC Adapter

Measurement Preparations 2

31

2

2.1 Supplying Power

2.1.1 Connecting the AC Adapter

Use only the specified Model 9445-02 AC Adapter AC adapter input
voltage range is 100 to 240 VAC (with ±10% stability) at 50 Hz/60 Hz.
To avoid electrical hazards and damage to the instrument, do not
apply voltage outside of this range.

• Make sure the power is turned off before connecting or disconnecting
the AC adapter.

• Use the AC adapter for long-term measurements.

Connect the AC adapter according to the steps below

1. Connect the 9445-02 AC Adapter to the AC adapter terminal.

2

3

4

5

6

7

8

9

2. Connect the AC adapter plug to an AC wall outlet.

This completes AC adapter connection.

10

11

12

13

32

2.1 Supplying Power

2.1.2 Inserting and Replacing Batteries

• Do not mix old and new batteries, or different types of batteries.
Also, be careful to observe battery polarity during installation.
Otherwise, poor performance or damage from battery leakage
could result.

• To avoid the possibility of explosion, do not short circuit, disas­semble or incinerate batteries.

• Handle and dispose of batteries in acc
tions.

• To avoid corrosion and damage to this instrument from battery
leakage, remove the batteries from the instrument if it is to be
stored for a long time.

To avoid corrosion and damage to this instrument from battery leakage,
remove the batteries from the instrument if it is to be stored for a long
time.

• The indicator appears when battery voltage becomes low. Replace

the new batteries as soon as possible. (outside guaranteed accuracy)

• Use battery power to run the tester for brief measurement sessions in

loca

tions witho

• Disconnecting and connecting the AC adapter during measurements

whe

n the

surement values to fluctuate greatly.

ut AC power.

tester is both battery and AC powered may cause the mea-

ordance

with local regula-

2.1 Supplying Power

Remove

Battery compartment lid

Attach

Battery compartment lid

Use the following steps to insert (replace) the batteries.

Required batteries: LR6 alkaline battery (4)

1. Remove the battery compartment lid.

33

2

2

3

2. When replacing batteries, first remove the old batteries.

3. Insert the batteries taking care to match the polarity correctly.

4. Attach the battery compartment lid.

4

5

6

7

8

9

10

11

This completes the battery insertion (replacement) procedure.

12

13

34

Output connector

Sensor terminal

2.2 Connecting a Magnetic Field Sensor

2.2 Connecting a Magnetic Field Sensor

Use the magnetic field sensor within its specified range.
In a high frequency and strong magnetic field, the sensor
will output a high voltage that may cause electric shock
or sensor damage when someone touches an uncon­nected output terminal.
Observe the rating and the dera

ting curve

during operation.

Connect the magnetic field sensor (100 cm2 or 3 cm2) according to the
steps below.

of the sensor

The 100 cm2 sensor, intended for normal application, has a cross­sectional area of 100 cm
The 3 cm

designed for measuring detailed magnetic field distribution.

2

sensor has a cross-sectional area of 3 cm2 and is

2

.

Locate the Z-axis of the magnetic field sensor facing forward,
insert the output connector of the sensor in the FT3470-50
sensor terminal and screw the nut of the sensor in to firmly
attach the sensor.
The sensor automatically recognizes the connected magnetic

s

field sen

To avoid damaging the output cable, grasp the connector, not the cable,
when unplugging the cable.

This completes connection of 100 cm2 and 3 cm2 magnetic field sen­sors.

or.

2.3 Turning the Power On and Off

2 seconds
or more

2.3 Turning the Power On and Off

Turn the power on (off) according to the steps below.

Turning on the power

Press

.

35

2

2

3

4

5

Turning the power off

Hold down for 2 seconds or more.

To avoid battery depletion, turn the function selector OFF after use (the
Auto Power Save feature consumes a small amount of current).

6

7

8

9

10

11

12

13

36

2.3 Turning the Power On and Off

37

3.1 Measurement Preparations

Measurement Procedure 3

3.1 Measurement Preparations

Before the start of measurements, make the following preparations in
the stated order.

1. Press to turn on the power.

2. Make sure that all segments on the LCD display light.

Then it will display the model number and estimated remain­ing battery life.

2

3

4

5

6

7

8

9

3

The model number will be shown as “3470.”

10

11

12

13

38

3.1 Measurement Preparations

Function for checking low battery voltage

When battery voltage goes low and lights, the power is
forcibly turned off. At this time,

[BAtt] [Lo] also appear.

3. The magnetic flux density function screen appears.

This ends measurement preparations.

• When a setup has been saved (for details refer to 4.1 "Function for

Saving Settings (Saving Set Modes and Measurement Ranges)"
(P.59)), the set measurement mode screen appears.

• To initialize the tester (to return it to its factory defaults), turn off the

p

See 4.2 "Initializing Function (Returning Settings to Their Factory Defaults)" (P.60)

nd then hold down and press .

ower a

3.2 Pre-measurement Check

No

damage

Check whether the mag­netic field sensor, the tes­ter case, the 9759 Output
Cable and the USB cable
are damaged.

Do not use the tester if any of
the cables are damaged and
the cable metal core is visible.

Sufficient

battery

power

Check if the battery is
depleted after powering

up. A flashing ” mark
indicates that there is no
remaining battery life.

lights when battery power is low.
The tester is not able to make accu­rate measurements when battery
power is low. Replace the battery.

See 2.1.2 "Inserting and

Replacing Batteries"
(P.32)

Start

measurements

Magnetic field sensor and tester case must be repaired. Contact your
dealer (agent) or local sales office.

Replace the 9759 Output Cable and USB cable with new cables.

1.

2.

Damaged

Insufficient

battery

power

3.2 Pre-measurement Check

This instrument has been calibrated to operate with the optional sensors
and should be used only with these sensors. Thus if multiple instruments
are used, make sure that each instrument is combined with the correct
sensor.

39

Inspection flow chart

Check the following before using the tester.

2

3

3

4

5

6

7

8

9

10

11

12

13

40

5

21

: wide range measurements

: power frequency range measurements

: extended power frequency range measurements

3.3 Measuring Magnetic Flux Density

3.3 Measuring Magnetic Flux Density

Measure magnetic flux density according to the steps below.

1. Press to open the magnetic flux density function

screen.

3.3 Measuring Magnetic Flux Density

Range number

AUTO r0 r1 r2 r3

Ranges are switched in the order
shown below.

0.1 mT 2.0 mT

r3

10 uT

200 uT

r2

1 uT 20 uT

r1

※0.1 uT

2 uT

r0

Magnetic flux density (10 Hz - 400 kHz, 10 Hz - 2 kHz, 2 kHz - 400 kHz)　
Fixed range

3.464 mT

346.4 uT

34.64 uT

3.464 uT

Guaranteed accuracy range for resultant RMS value R

※The magnetic flux density for 3472 (10 Hz - 400 kHz, 10 Hz - 2 kHz) is 0.4 uT.

cm

2

2. Press to select measurement range.

Range type Range number Range

Auto-range

Manual range r0 2 

appears on the

display

r1 20 T/

r2 200 

r3 2 mT

41

Automatically selects

appropriate range dur-

ing measurements.

T

T

2

3

4

5

6

7

3

• The ranges for the X, Y and Z axes are interlocked with maximum
range and are automatically switched.

Range of guaranteed accuracy

At resultant RMS value R, a count of less than 100 is outside guaranteed
accuracy
Use an

. 

appropriate range.

8

9

10

11

12

13

42

3.3 Measuring Magnetic Flux Density

3. Place the magnetic field sensor near the DUT.

• For accurate measurements, the tester should be located further away
from the DUT than the magnetic field sensor.

• Although few magnetic materials are used in the magnetic field tester,
the battery is a magnetic material and may affect measurements if
located close to the DUT. In this situation, it may be a good idea to use
an extension cable to increase the distance between the magnetic field
sensor and the tester or to remove the battery and use the AC adapter.

4. Read the indicated value.

5. Press to save the measurement data.

This ends magnetic flux density measurements.

3.4 Measuring Exposure Level (General Public)

Waveform of mag-

netic field to be mea-

sured is known

START

A magnetic field that

periodically fluctu-

ates by 10 Hz or

more?*

Turn off the slow

function

Turn on the slow

function

No

Yes

Yes No

3.4 Measuring Exposure Level 

(General Public)

Use this mode to make measurements that conform to IEC/EN62233.

43

3.4.1 Preparing for Exposure Measurements

Use the flow chart below to determine whether to use the slow function
setting.

Slow function setting assessment flow chart

Use this test to determine whether the test of a household appliance
should confor

m to IIEC/EN62233.

2

3

4

5

6

7

8

9

3

*: When measuring a magnetic field that periodically fluctuates by 10 Hz or more, turn

off the slow function.
This is because moving the sensor causes the detection of AC current generated by
a DC magnetic field such as the terrestrial magnetic field and other AC magnetic
fields. Eight times the integral time is then required including processing time for the
measurement value to stabilize.



10

11

12

13

44

3.4 Measuring Exposure Level (General Public)

The result of the flow chart assessment is "Turn on the
slow function."

Use the steps below to open the "QuickSet" screen. (An exposure level
(General Public) measurement can be started after turning on the slow
function.)

When the power is off, hold down and press .

The "QuickSet" screen opens

After this follow the procedures 2. (P.48) described in 3.4.3
"Measurement Procedure" to perform an exposure level (Gen­eral Public) measurement.

The result of the flow chart assessment is "Turn off the
slow function."

The result of the flow chart assessment is "Turn off the slow function."
Turn off the slow function as described in 4.3.4 "Setting the Slow Func­tion" (P.67). (The default setting is "Off.")

45

Measure­ment

Internal



processing

Measure­ment

Internal
processing

Measure­ment

Internal
processing

Measure­ment

Internal
processing

1 s 1 s 1 s 1 s 1 s 1 s 1 s 1 s

Measure­ment

Internal
processing

Measure­ment

Internal
processing

Measure­ment

Internal
processing

Measure­ment

Internal
processing

0.12 s 0.13 s 0.12 s 0.13 s 0.12 s 0.13 s 0.12 s 0.13 s

1 s

3.4 Measuring Exposure Level (General Public)

The table below shows the measurement and internal processing times
with the slow function on and when it is off.

Slow function on

2

3

Slow function off

3.4.2 Exposure Level

• Values obtained in an exposure measurement are not measures of the
risk a specific magnetic field poses.

• In Exposure Level function, first order filters are used to approximate
magnetic density flux levels in the ICNIRP guideline. Thus corner fre­quencies cause a difference of at most 3 dB, but this corresponds to
the "smoothed edges" referred to in IEC/EN62233.

• A discussion of acute health effects of exposure must account for cou-

pling factors such as the human body and magnetic fields, threshold
values under
general public and occupational exposure.

Reference:
In IEC62233, the coupling factor at 10 cm as described in ICNIRP is
"0.14"

for small and "0.16" for large ones while the safety factor
(reduction factor) (the reduction factor for public exposure is "50" (1/
50 of the threshold value) for threshold values for occupational expo­sure is "10" (1/10 of the threshold value).

basic restrictions and safety factors (reduction factor) for

3

4

5

6

7

8

9

10

11

See :For details, see "Appendix" (P.113).

12

13

46

Magnetic

field

Magnetic

field

Reference

Uniform magnetic field

Non-uniform magnetic

field

The locations indicated by (8 points on the spherical sensor surface) should be
maintained in a vertical attitude relative to the DUT.

Measure at an angle away from the three coils

Magnetic field

Magnetic field

Source

Magnetic field sensor

3.4 Measuring Exposure Level (General Public)

• In measuring non-uniform magnetic fields (see figure below) where
the sensor may come into contact with a source, it is recommended
that measurements be conducted at a distance from the three coils

and at an angle (indicated by in the figure below) to maintain isot­ropy of each axis.



The IEC/EN62233 standards do not mention sensor angle.

3.4 Measuring Exposure Level (General Public)

5

21

3.4.3 Measurement Procedure

Measure exposure level (General Public) according to the steps below.
General Public Exposure is selected.

47

2

3

4

3

1. Press to open the exposure level (General Public)

mode screen.

5

6

7

8

9

10

11

12

13

48

Range number

AUTO r0 r1

Ranges are switched in the order
shown below.

10% 200%

1% 20%

r1
r0

Exposure level (General Public, Occup.) Fixed range

Guaranteed

Conditional guaranteed accuracy range (when none of X, Y, Z are O.L.)

346.4%

34.64%

Guaranteed accuracy range for resultant RMS value R

3.4 Measuring Exposure Level (General Public)

2. Press to select measurement range.

Range type Range number Range

Auto-range

Manual range r0

Range of guaranteed accuracy

At resultant RMS value R, a count of less than 100 is outside guaranteed
accuracy.
As a result, when R is 9.9% or less in range r1, it is not within guaran­teed accuracy.
Use an appropriate range.

appears on the

display

r1 200%

Automatically selects

appropriate range dur-

ing measurements.

20%

accuracy range

3.4 Measuring Exposure Level (General Public)

a mm

DUT

61 mm

3. Place the magnetic field sensor near the DUT.

49

2

3

3

• For accurate measurements, the tester should be located further away
from the DUT than the magnetic field sensor.

• Although few magnetic materials are used in the magnetic field tester,
the battery is a magnetic material and may affect measurements if
located close to the DUT. In this situation, it may be a good idea to use
an extension cable to increase the distance between the magnetic field
sensor and the tester or to remove the battery and use the AC adapter.

• For details on measuring distance from DUT, sensor location and

oper

ating co

nditions, refer to the IEC/EN62233.

• The center of the 100 cm

sensor is located at right angles to the X, Y
and Z axes. Since
center to the spherical surface is 61 mm and
the distance to the DUT is a mm, locate the
tester so that the distance from the surface of
the DUT to the center of the sensor is (a + 61
mm). Calculate the measurement distance
from the surface of protrusions on the DUT.

2

magnetic field

the distance from the

4. Read the indicated value.

5. Press to save the measurement data.

4

5

6

7

8

9

10

11

This ends exposure (General Public) measurements.

12

13

50

5

21

3.5 Measuring Exposure Level (Occup.)

3.5 Measuring Exposure Level (Occup.)

Measuring Exposure Level (Occup.)

1. Press to open the exposure level (Occup.) mode screen.

Occup. Exposure is selected.

3.5 Measuring Exposure Level (Occup.)

Range number

AUTO r0 r1

Ranges are switched in the order
shown below.

10% 200%

1% 20%

r1
r0

Exposure level (General Public, Occup.) Fixed range

Guaranteed

Conditional guaranteed accuracy range (when none of X, Y, Z are O.L.)

346.4%

34.64%

Guaranteed accuracy range for resultant RMS value R

2. Press to select measurement range.

Range type Range number Range type

Auto-range

appears on the

display

51

Automatically selects

appropriate range dur-

ing measurements.

2

3

4

5

3

Manual range r0

Range of guaranteed accuracy

At resultant RMS value R, a count of less than 100 is outside guaranteed
accuracy.
As a result, when R is 9.9% or less in range r1, it is not within guaran­teed accuracy.
Use an appropriate range.

accuracy range

20%

r1 200%

6

7

8

9

10

11

12

13

52

3.5 Measuring Exposure Level (Occup.)

3. Place the magnetic field sensor near the DUT.

• For accurate measurements, the tester should be located further away
from the DUT than the magnetic field sensor.

• Although few magnetic materials are used in the magnetic field tester,
the battery is a magnetic material and may affect measurements if
located close to the DUT. In this situation, it may be a good idea to use
an extension cable to increase the distance between the magnetic field
sensor and the tester or to remove the battery and use the AC adapter.

4. Read the indicated value.

5. Press to save the measurement data.

This ends exposure level (Occup.) measurements.

53

1, 2

3.6 Holding Maximum Value of the Resultant RMS Values

3.6 Holding Maximum Value of the Resultant
RMS Values

This function holds the maximum value of the resultant RMS value R
and the values of each axis.

2

3

3

1. Press to hold the maximum value of the resultant RMS

value R

and the icon lights.

The update of the maximum value will occur as a bigger resultant RMS
value is observed. Therefore it is possible that the value of X, Y, or Z axis

may decrease.

data cannot be saved.

is invalid during MAX.HOLD and measurement

2. Press again to turn off and clear held maximum

data value.

The screen returns to the state it had before was pressed.

4

5

6

7

8

9

10

11

12

13

54

3

2

1, 2

3.7 Checking and Deleting Saved Measurement Data

3.7 Checking and Deleting Saved Measure­ment Data

3.7.1 Checking Saved Measurement Data

Use the following steps to check saved measurement data.
You can save up to 99 data.

1. Press to open the screen with the saved measurement

data.

55

Memory number

3.7 Checking and Deleting Saved Measurement Data

2. Press () or () to select the memory number of

measurement data you wish to check.

3. Press to return to the measurement function screen.

2

3

4

5

6

3

This completes saving measurement data

blinks when measurement data is saved with the slow function

ON.

7

8

9

10

11

12

13

56

3

2

1, 2

Highest memory
number

3.7 Checking and Deleting Saved Measurement Data

3.7.2 Deleting Saved Measurement Data

Use the following steps to delete saved measurement data.

1. Press to open the screen with the measurement data.

2. Press and hold for 2 seconds or more.

This deletes the measurement data with the highest memory
number
Data can deleted only when moved to the highest memory
number

.

.

3.7 Checking and Deleting Saved Measurement Data

[dAtA] [cLr] appear when data is deleted.

57

2

3

3

The measurement data for the next highest memory number
appears.

3. Press to return to the measurement function screen.

4

5

6

7

8

9

10

11

This completes deleting measurement data.

12

13

58

3.7 Checking and Deleting Saved Measurement Data

3.7.3 Deleting All Saved Measurement Data

Use the following steps to delete all saved measurement data.

When the power is off, hold down and press .

This deletes all saved measurement data.

dAtA] [cLr] appear when measurement data is deleted.

[

Then the model number, estimated remaining battery life and the
meas

urement function screen appear.

This completes deleting all saved data.

4.1 Function for Saving Settings (Saving Set Modes and Measurement Ranges)

Approx. 2 s

Advanced Functions 4

59

4.1 Function for Saving Settings (Saving
Set Modes and Measurement Ranges)

A frequently used mode can be saved for immediate access.
The saved mode appears as soon as the tester is powered up.

Follow the steps given below.

Select the mode or range you wish to access upon powering

up and hold down for 2 seconds or more.

[SAvE] [End] appear and the tester returns to the screen prior
to saving settings.



2

3

4

5

6

7

8

9

4

10

11

12

13

60

4.2 Initializing Function (Returning Settings to Their Factory Defaults)

4.2 Initializing Function (Returning Settings
to Their Factory Defaults)

This function initializes all settings returning them to their factory defaults
and deletes all saved data. Follow the steps given below.

When the power is off, hold down to press .

All clr] appears.

[

After this it displays the model number and estimated remaining bat­tery life, and is restarted using the factory default settings.

The factory default settings are listed in the table below.

Item Settings

Function / Mode

Range AUTO

Output None

Auto power off Enabled

Buzzer Enabled

Axis XYZ

Slow function OFF

Unit T

Magnetic flux density

(10 Hz to 400 kHz)

4.3 Other Functions

3

2

1, 4

1, 2

4.3 Other Functions

The following sections describe other functions that a user should know.

4.3.1 Setting Auto Power Off (Saving Battery Power)

• This function saves battery power when the user forgets to turn off the
power.

• The tester is automatically turned off 10 minutes after the last key press.

• lights when the auto power off funct

tester, the icon flashes and sounds a buzzer tone (for about 30 s).
Pressing any key during this interval postpones shutdown by 10 minutes.

Follow the steps given below.

ion is on. Before turning off the

61

2

3

4

5

6

4

1. When the power is off, hold down and press .

2. Press () or () to turn on .

7

8

9

10

11

12

13

62

y

n

4.3 Other Functions

3. Press and select [y] or [n].

[y] : set auto power off.

[n]

: cancel auto power off.

4. Press to save the setting. 

SAvE] [End] appear and the power is turned off.

[

4.3.2 Setting Audible Key Feedback

3

2

1, 4

1, 2

This function causes the keys to generate a beep when pressed.

Follow the steps given below.

4.3 Other Functions

63

2

3

4

4

1. When the power is off, hold down and press .

2. Press () or () to turn on [bEEP].

5

6

7

8

9

10

11

12

13

64

y

n

4.3 Other Functions

3. Press and select [y] or [n].

[y] : audible key feedback is on.

[n]

: audible key feedback is off.

4. Press to save the setting. 

SAvE] [End] appear and the power is turned off.

[

4.3.3 Changing Unit Indication

3

2

1, 4

1, 2

Use this function to change the unit indication. (The default unit is T.)

Follow the steps given below.

4.3 Other Functions

65

2

3

4

4

1. When the power is off, hold down and press .

2. Press () or () to turn on [Unit].

5

6

7

8

9

10

11

12

13

66

T, G, or A/m

4.3 Other Functions

3. Press and select [T], [G], or [A/m].

4. Press to save the setting. 

SAvE] [End] appear and the power is turned off.

[

Measured

axes

X, Y, Z

R

Unit

Maximum display of range

r0 r1 r2 r3

T 2.000 T 20.00 T 200.0 T 2.000 mT

G 20.00 mG 200.0 mG 2.000 G 20.00 G

A/m 1.592 A/m 15.92 A/m 159.2 A/m 1592 A/m

T 3.464 T 34.64 T 346.4 T 3.464 mT

G 34.64 mG 346.4 mG 3.464 G 34.64 G

A/m 2.757 A/m 27.57 A/m 275.7 A/m 2757 A/m

4.3.4 Setting the Slow Function

3

2

1, 4

1, 2

This function performs 1 s sampling and then displays the measurement
value.

Follow the steps given below.

1. When the power is off, hold down and press .

2. Press () or () to turn on [SLou].

4.3 Other Functions

67

2

3

4

5

6

4

7

8

9

10

11

12

13

68

y

n

4.3 Other Functions

3. Press and select [y] or [n].

[y] : sets the slow function.

[n]

: cancels the slow function.

4. Press to save the setting. 

SAvE] [End] appear and the power is turned off.

[

blinks while measuring with the slow function on.

4.3 Other Functions

3

2

1, 4

1, 2

4.3.5 Enable/disable the MEM. MODE key when Using MAX. HOLD or the Output Function

Use this function to turn on or off the key when using MAX. HOLD

or the output function.

Displaying saved measurement data while using the output function
causes output to turn off.

69

2

Follow the steps given below.

1. When the power is off, hold down and press .

2. Press () or () to turn on [MEM.M].

3

4

4

5

6

7

8

9

10

11

12

13

70

y

n

4.3 Other Functions

3. Press and select [y] or [n].

[y] :

[n]

enables in MAX. HOLD mode and output

modes.

disables in MAX. HOLD mode and output

:

modes.

4. Press to save the setting. 

SAvE] [End] appear and the power is turned off.

[

5.1 Overview

Using Application Software 5

71

5.1 Overview

The application software supplied with the FT3470-50 provides the fol­lowing functions.

Functions Functions in detail See:

Graphic representation
of measurement values

Transfer recorded data
to a PC

Configure the FT3470­50 from a

View application soft­ware version

The supplied PC driver and the application software must be installed on
a PC to enable d

See : 5.2 "Installing" (P.72)

Operating environment

Supported
operating
system

Hard



disk capacity

Interface

Analyzing measurement data on a
PC

PC

ownloading data from the FT3470-50 tester.

• Windows XP, Windows Vista



• The hardware environment comprising CPU, mem-

• 10 MB or more free disk space

• USB Ver. 1.1 or later

• One FT3470-50 unit can be connected at any one time

Configuring the FT3470-50 from a
PC

Checking version of application soft­ware



Windows 7 (32 bit/64 bit)

ory, display, etc. must conform to operating system

endations.

recomm

(32 bit/64 bit), 

5.3 (P. 85)

5.4 (P

. 88)

5.5 (P. 91)

5.6 (P. 93)

2

3

4

5

5

6

7

8

9

USB hubs with a power consumption exceeding 100 mA must be self­power hubs.

CD configuration

Folder

File accuracy.dat Accuracy file

Select "small font" for the operating system since "large font" may cause
irregularities in screen indications.

Japanese
English

Folder containing the application configu­ration file and a file for installing FT3470­50 USB driver

10

11

12

13

72

1

2

5.2 Installing

5.2 Installing

The major installation procedures are listed below.

Install the driver.

See : 5.2.1 "Installing the Driver" (P.72)

Install the PC software.

See : 5.2.2 "Installing Software" (P.82)

5.2.1 Installing the Driver

The driver installation procedures are described below.

Do not connect and disconnect the USB cable during operations. Dis­connecting the USB cable will prevent normal completion of the installa­tion procedure.

• Only one FT3470-50 tester can be connected to one PC.

• You may be informed that a new device has been detected also when
a FT3470-50 tester with a different serial number is connected. Install
the device driver according to the on-screen instructions.

Windows 7

1. Insert the supplied CD in the DVD/CD drive.

2. Open the folder [English] included on the CD, then execute

73

5.2 Installing

driverSetup.msi. This will activate the installer and open the
"HIOKI USB Single Driver" window.

2

3

4

5

5

6

3. Click [Next].

4. Specify the installing destination folder and click [Next].

7

8

9

10

11

12

13

74

5.2 Installing

5. Click [Next].

6. Click [Yes].

7. Click [Install].

8. Click [Close].

75

5.2 Installing

2

3

4

5

9. Remove the CD from the DVD/CD drive.

Windows Vista

1. Insert the supplied CD in the DVD/CD drive.

2. Open the folder [English] included on the CD, then execute

driverSetup.msi.
This will activate the installer and open the "HIOKI USB Single
Driver" wind

5



6

7

8

ow.

9

10

11

12

13

76

5.2 Installing

3. Click [Next].

4. Specify the installing destination folder and click [Next].

5. Click [Next].

6. Click [Continue].

77

5.2 Installing

2

7. Click [Install].

8. Click [Close].

3

4

5

5

6

7

8

9

10

9. Remove the CD from the DVD/CD drive.

11

12

13

78

5.2 Installing

Windows XP

1. Insert the supplied CD in the DVD/CD drive.

2. Open the folder [English] included on the CD, then execute

3. Click [Next].

driverSetup.msi. This will activate the installer and open the
"HIOKI USB Single Driver" window.

4. Specify the installing destination folder and click [Next].

5. Click [Next].

79

5.2 Installing

2

3

4

5

6. Click [Continue Anyway].

5

6

7

8

9

10

11

12

13

80

5.2 Installing

7. Click [Close].

8. Remove the CD from the DVD/CD drive.

9. Turn on the tester.

10. Using the supplied USB cable, connect the tester to the PC.

11. When the FT3470-50 is connected to the PC for the first time,

connection is automatically detected by the PC.
The "Found New Hardware Wizard" appears.

12. Select "No, not this time" and click [Next].

5.2 Installing

13. Select "Install the software automatically" and click [Next].

14. Click [Continue Anyway].

81

2

3

4

5

5

6

15. Click [Finish].

7

8

9

10

11

12

13

82

4.

5.2 Installing

5.2.2 Installing Software

The software installation procedures are described below.

1. Close all currently active applications on the PC.

2. Insert the CD (PC application software) supplied with the

instrument into the CD-ROM drive.

3. Open the folder [English] included on the CD, then execute

Setup.exe.

This will activate the installer and open the "DATA VIEWER for FT3470
(EN)" window.

4. Click [Next].

83

Click this button when specify
the installing destination.

5.2 Installing

5. Click [Change], then specify the installing destination folder. 

Next].

Click [

6. Click [Install].

2

3

4

5

5

6

7. When installation ends, click [Finish] in the checking window.

Installation is now complete.

7

8

9

10

11

12

13

84

5.2 Installing

Uninstallation

1. Select [Setup] - [Control Panel] from the [Start] menu, then

2. Select "DATA VIEWER for FT3470 (EN)," then click [Remove]

3. Uninstall the program by following the procedure appearing on

Select [Program] - [HIOKI] - [DATA VIEWER for FT3470] - [DATA VIEWER
for FT3470 (EN)] from the [

application.

Add/Remove Programs].

click [

Change/Remove].

or [

the screen.

Start] menu of Windows



to activate the

5.3 Graphic Representation of Measurement Values

USB cable

5.3 Graphic Representation of Measure­ment Values

Measurement values obtained using the FT3470-50 tester can be
imported to a PC for graphic representation.

85

1. Turn on the FT3470-50 and select [HIOKI]-[DATA VIEWER for

FT3470

ton on the PC.

]-[DATA VIEWER for FT3470 (EN)] from the Start but-

2

3

2. Connect the tester to a PC using the supplied USB cable.

(Push the cable plugs all the way in.)

4

5

5

6

on the FT3470-50 lights and all k

than the are disabled.

• Only one FT3470-50 tester can be connected to a PC at one time.

• The effective value logger can obtain up to 32000 data.

ey operations other

7

8

9

10

11

12

13

86

3.

6.

7.











N

n

n

Tt

y

N

dty

T

y

t

1

2

2

ˆ

11

ˆ

222

ˆ

ˆˆ

ˆ

zyxR 











N

n

n

Tt

z

N

dtz

T

z

t

1

2

2

ˆ

11

ˆ











N

n

n

Tt

x

N

dtx

T

x

t

1

2

2

ˆ

11

ˆ

5.3 Graphic Representation of Measurement Values

3. Click the "Effective Value Logger" tab in the "HIOKI DATA

VIEWER for FT3470
Logger

" screen.

Menu item Description

Fixed Interval Samples at fixed intervals to obtain 20 points per

Average Calculates the average of sampling data obtained in

" window to open the "Effective Value

division.

g 1 point.

drawin
(Equation)

Maximum Indicates data when resultant RMS value R is at its

Drop-down list box for

ling interval

samp

R/ x/ y/ z Turn R, x, y and z data indication On and Off.

File Read Represents saved data in graphic form and saves it

CSV Save Saves graph data.

Start Starts measurements.

Stop Stops measurements.

Print Prints graphs

maximum
drawing 1 point.

Selects sampling interval. When the slow function is
set to ON, 1 s/div and 5 s/div are not available.

as grap

among the sampling data obtained in

h data.

87

Sampling method

Sampling interval

5.3 Graphic Representation of Measurement Values

4. Set sampling method, sampling interval and start measure-

ments.

5. Click the mouse to move the vertical lines in the graph and to

indicate the data for the corresponding time interval at the bot­tom of the screen.

2

3

4

5

5

6

7

6. Click [Stop] to stop measuring. Then click [CSV Save] to save

the graph data.

7. Click [File Read] to read out saved data. Or click [Print] to print

the graph.

8. Disconnect the USB cable from the tester and the PC and turn

off the tester.

8

9

10

11

12

13

88

USB cable

5.4 Transferring Recorded Data to a PC

5.4 Transferring Recorded Data to a PC

Use this function to transfer data from the FT3470-50 tester to a PC. The
data can be saved in the CSV format on the PC.

1. Turn on the FT3470-50 and select [HIOKI]-[DATA VIEWER for

FT3470

ton on the PC.

]-[DATA VIEWER for FT3470 (EN)] from the Start but-

2. Connect the tester to a PC using the supplied USB cable.

(Push the cable plugs all the way in.)

on the FT3470-50 lights and all key

operations other

than the are disabled.

• Only one FT3470-50 tester can be connected to a PC at one time.

• The prescribed accuracy range is not considered in R+Accuracy and
R-Accuracy*.
*: R+Accuracy and R-Accuracy are the results of + and - accuracy cal-

culations of resultant RMS values and indicates that R is within this
range. These

• Accuracy for the

Measurement function Accuracy

Magnetic flux density ±3.5%rdg. ±0.5%f.s.

Exposure level ±5.0%rdg. ±0.5%f.s.

values may be used in the standard.

"Entire Read" tab is shown in the table below.

89

3.4. 6. 5.

5.4 Transferring Recorded Data to a PC

3. Click the "Entire Read" tab in the "HIOKI DATA VIEWER for

FT3470

" window to open the "Entire Read" screen.

2

3

4

5

Screen item Description

Read Transfers data from the FT3470-50 tester

Memory Clear Deletes data recorded on the FT3470-50.

CSV Save Saves displayed data.

File Read Displays saved data.

Unit Change drop-down list box Selects unit for magnetic flux density data.

Unit Change Changes unit for indicated magnetic flux

Rxyz / Displayed Value on the

FT3470-50

Print Prints displayed data.

to a PC.

densi

ty data to unit selected in the Unit

Change drop-down list box.

cts Rxyz or value displayed on the

Sele
FT3470-50.

5

6

7

8

9

4. Click [Read] to transfer recorded data to a PC.

Do not disconnect the USB cable during transfer or the transfer will not
end normally.

10

11

12

13

90

5.4 Transferring Recorded Data to a PC

5. Then click [CSV Save] to save the displayed data.

Click [File Read] to read out saved data. Or click [Print] to print the dis­played data.

6. Use [Memory Clear] to delete recorded data on the FT3470-50

that is no longer needed.

7. Disconnect the USB cable from the tester and the PC and turn

off the tester.

5.5 Configuring the FT3470-50

USB cable

5.5 Configuring the FT3470-50

Use the instructions below to configure and store the settings that the
FT3470-50 use when powered up.

1. Turn on the FT3470-50 and select [HIOKI]-[DATA VIEWER for

FT3470

ton on the PC.

]-[DATA VIEWER for FT3470 (EN)] from the Start but-

91

2

2. Connect the tester to a PC using the supplied USB cable.

(Push the cable plugs all the way in.)

on the FT3470-50 lights and all k

than the are disabled.

Only one FT3470-50 tester can be connected to a PC at one time.

ey operations other

3

4

5

5

6

7

8

9

10

11

12

13

92

3.4. 5.6.

5.5 Configuring the FT3470-50

3. Click the "Configuration" tab in the "HIOKI DATA VIEWER for

FT3470

" window to open the "Configuration" screen.

Screen item Description

Configure the FT3470-50 Configures the FT3470-50.

Initialize the FT3470-50 Returns the FT3470-50 to its factory defaults.

Setting Save Saves made settings.

Setting Read Reads saved settings.

4. Click [Configure the FT3470] to set up the FT3470-50 tester.

5. Then click [Setting Save] to save the displayed data.

Click [Setting Read] to read out saved data.

Be sure not to change the file extension as this will prevent normal read­ing of file data.

6. Use [Initialize the FT3470] to return the FT3470-50 settings to

their factory defaults.

7. Disconnect the USB cable from the tester and the PC and turn

off the tester.

5.6 Viewing Version Information

USB cable

5.6 Viewing Version Information

Use this function to view the version of the "HIOKI DATA VIEWER for

FT3470

".

1. Turn on the FT3470-50 and select [HIOKI]-[DATA VIEWER for

FT3470

ton on the PC.

]-[DATA VIEWER for FT3470 (EN)] from the Start but-

93

2

2. Connect the tester to a PC using the supplied USB cable.

(Push the cable plugs all the way in.)

on the FT3470-50 lights and all k

than the are disabled.

Only one FT3470-50 tester can be connected to a PC at one time.

ey operations other

3. Click the "Version" tab in the "H I O K I D A T A V I E W E R f o r

FT3470

" window to open the "Version" screen.

3

4

5

5

6

7

8

9

10

11

12

13

94

5.6 Viewing Version Information

4. Disconnect the USB cable from the tester and the PC and turn

off the tester.