Hioki FT3470-51 User manual

FT3470-51
FT3470-52 Instruction Manual
MAGNETIC FIELD HiTESTER
EN
July 2018 Revised edition 1
FT3470F981-0118-07H
Be sure to read this manual
before using the instrument Safety Information Xp.4
When using the instrument
IRUWKH¿UVWWLPH Troubleshooting
Names and Functions of Parts Xp.17 Troubleshooting Xp.111
Measurement Preparations Xp.31 Error Indication Xp.112
Measurement Procedure Xp.37
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Contents i
Index
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 cm2Magnetic Field Sensor ........................21
1.4.3 3 cm2Magnetic Field Sensor ............................22
1.5 Definition of Measurement Items ...................... 23
1.6 Screen Configuration and Key Operation 
Work Flow ........................................................ 24
1.7 Measurement Work Flow ................................. 27
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
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APP
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FT3470F981-01
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Contents
ii
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
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Contents iii
Index
5.5 Configuring the FT3470-50 .............................. 91
5.6 Viewing Version Information ............................. 93
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 cm2Magnetic Field Sensor ..................... 109
7.3 3 cm2Magnetic 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
Appendix 113
Appendix 1 ICNIRP Guideline (Basic Restrictions) .. 113
Appendix 2 Coupling Factor in the ICNIRP Guidelines
.............................................................. 114
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Appendix
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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.
While every effort has been made to ensure that the content of this man-
ual is correct, we would appreciate it if you notified your dealeU
should you notice any unclear, incorrect or missing informa-
tion.
Microsoft and Windows are either registered trademarks or trademarks
of Microsoft Corporation in the United States and other countries.
• Unless otherwise specified, "Windows" represents Windows XP, Win-
dows Vista, Windows 7.
• Dialog box represents a Windows dialog box.
• Menus, commands, dialogs, buttons in a dialog, and other names on
the screen and the keys are indicated in brackets.
Introduction
This instruction manual contains instructions for use of the device
with the 100 cm2and 3 cm2Magnetic Field Sensor.
Note
Trademarks
Notation
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
mouse and then release the left button to deposit the cho-
sen item in the desired position.
Activate: Click on a window on the screen to activate that window.
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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
Inspection
FT3470-50 (1) USB cable (1)CD (PC application
software) (1)
LR6 alkaline battery (4)
Instructionmanual
(1)
FT3470-51 Magnetic Field Tester
100 cm2 Magnetic Field Sensor(1)
9445-02 AC Adapter (1)
Carrying Case (1)
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Shipping precautions
Use the original packing materials when transporting the instrument, if
possible.
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 cm2 Magnetic Field
Sensor (1)
9758 Extension Cable (1) 9759 Output Cable (1) Carrying Case (1)
9445-02 AC Adapter (1)
This instrument has been calibrated to operate with the provided mag-
netic field sensor and should be used only with this sensor. Thus if
multiple instruments are used, Before use make sure that the match-
ing number (up to the hyphen) on the tester and the sensor are identi-
cal.
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This manual contains information and warnings essential for safe opera-
tion of the instrument and for maintaining it in safe operating condition.
Before using it, be sure to carefully read the following safety precautions.
Safety Symbols
The following symbols in this manual indicate the relative importance of
cautions and warnings.
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 instru-
ment in a way not described in this manual may negate the pro-
vided safety features.
Be certain that you understand the instructions and precautions
in the manual before use. We disclaim any responsibility for acci-
dents or injuries not resulting directly from instrument/ defects.
In the manual, the symbol indicates particularly impor-
tant information that the user should read before using
the instrument.
The symbol printed on the instrument indicates that
the user should refer to a corresponding topic in the man-
ual (marked with the symbol) before using the relevant
function.
Indicates DC (Direct Current).
Indicates AC (Alternating Current).
Indicates that incorrect operation presents an
extreme hazard that could result in serious injury or
death to the user.
Indicates that incorrect operation presents a signifi-
cant hazard that could result in serious injury or
death to the user.
Indicates that incorrect operation presents a possi-
bility of injury to the user or damage to the instru-
ment.
Indicates advisory items related to performance or
correct operation of the instrument.
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Symbols for Various Standards
Other Symbols
WEEE marking:
This symbol indicates that the electrical and electronic
appliance is put on the EU market after August 13, 2005,
and producers of the Member States are required to dis-
play it on the appliance under Article 11.2 of Directive
2002/96/EC (WEEE).
Indicates that the product conforms to regulations set out
by the EU Directive.
p. ) Indicates the location of reference information.
* Indicates that descriptive information is provided below.
Indicates a prohibited action.
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6
Measurement Categories
The applicable measurement category is determined by the input mod-
ule being used.
To ensure safe operation of measurement instruments, IEC 61010
establishes safety standards for various electrical environments, catego-
rized as CAT II to CAT IV, and called measurement categories.
CAT II : Primary electrical circuits in equipment connected to an AC
electrical outlet by a power cord (portable tools, household
appliances, etc.)
CAT II covers directly measuring electrical outlet receptacles.
CAT III : Primary electrical circuits of heavy equipment (fixed installa-
tions) connected directly to the distribution panel, and feeders
from the distribution panel to outlets.
CAT IV : The circuit from the service drop to the service entrance, and
to the power meter and primary overcurrent protection device
(distribution panel).
Using a measurement instrument in an environment designated with a
higher-numbered category than that for which the instrument is rated
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 volt-
age to this instrument may expose testing
personnel to high voltage that may at
worst lead to electric shock and death.
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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 nor-
mally to ensure that the no damage occurred during storage or ship-
ping. If you find any damage, contact your dealHU
.
• Before using the instrument, make sure that the insulation on the
cables is undamaged and that no bare conductors are improperly
exposed. Using the instrument in such conditions could cause an elec-
tric shock, so contact your dealer 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 less (no condensation)
Avoid the following locations that could cause an accident or damage to the instru-
ment.
Operating Precautions
Exposed to direct sun-
light
Exposed to high temper-
ature
In the presence of corro-
sive or explosive gases
Exposed to water, oil,
other chemicals, or sol-
vents
Exposed to high humid-
ity or condensation
Exposed to strong elec-
tromagnetic fields
Near electromagnetic
radiators
Exposed to high levels of
particulate dust Subject to vibration
To avoid damage to the instrument, protect it from physical shock when
transporting and handling. Be especially careful to avoid physical shock
from dropping.
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Connections
Handling
Handling with the CD
Connect only designated devices to the instrument terminals. To pre-
vent damage, do not apply a voltage that is outside the specified range
to the instrument.
• The instrument and the 100 cm2and 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 dam-
aged, because of the nonmagnetic metals.
• The 100 cm2and 3 cm2 Magnetic Field Sensors havea plastic housing
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. Espe-
cially, the 9758 Extension Cable and 9759 Output Cable should be
handled with care.
• 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 possi-
bility 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 or hard-tipped pen, because there is a danger of
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 condi-
tions of high temperature or humidity, as there is a danger of warping,
with consequent loss of data.
• 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 abra-
sives or solvent cleaners.
• Hioki shall not be held liable for any problems with a computer system
that arises from the use of this CD, or for any problem related to the
purchase of a Hioki product.
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1.1 Product Overview 9
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The FT3470-51, -52 Magnetic Field Tester is designed to measure mag-
netic 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 cm2and 3 cm2
Magnetic Field Sensors.
Make sure that the matching number (up to the hyphen) on the tester
and the magnetic field sensor are identical.
Overview 1
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.
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10 1.1 Product Overview
*1: Available units are T, G, and A/m and the magnetic permeability of air being 4S×10-7 H/m,
the relationships between the different units are as follows: 1T=104G, 1 A/m=4S×10-7 T.
*2: This value is obtained by inverse filtering of magnetic flux density values stated in
the ICNIRP2010 Guideline. 
Use the exposure level figures indicated for the general public in IEC/EN62233 or
Since the reference levels for magnetic field exposure indicated in ICNIRP2010 for
occupational exposure is approximately five times that of general public exposure,
the indicated values for occupational exposure is roughly a fifth of general public ex-
posure.
See "Appendix" (P.113)
Functions Functions in detail Reference
Basic Magnetic flux
density *1
measurements
Measuring the magnetic flux density of appli-
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
than power frequencies
See
3.3 (P. 40)
Exposure
level*2
measurements
Measuring the exposure level of appliances
and environments
Exposure level (general public): 
This level is used for measuring exposure to mag-
netic fields prevalent in environments where we can
assume the presence of people of all age groups and
health conditions (people who are not normally
aware of the presence of magnetic fields) as well as
exposure to magnetic fields generated by applianc-
es and other consumer devices manufactured to
conform to IEC/EN62233 and other standards. 
This level corresponds to the general public expo-
sure level in ICNIRP 2010.
Exposure level (occupational): 
This level applies to measurements of exposure to
magnetic fields in environments that involve
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 expo-
sure level in ICNIRP 2010.
See
3.4 (P. 43) 
3.5 (P. 50)
Application Output
functions A function that makes it possible to output
waveforms and resultant RMS value of mag-
netic flux density or exposure levels.
See 6.1 (P. 95)
Application
software use • This function allows you to do the following:
• to set up the FT3470-50 from your PC
• to upload data saved on the FT3470-50 to your
PC
• to monitor RMS values
See 5 (P. 71)
How big is the magnetic field?
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1.2 Features 11
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The large LCD display makes for ease of viewing measurement values.
Two magnetic field sensors of different sizes, the 100 cm2and 3 cm2*,
are available for the tester
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 cm2Magnetic Field Sensor only ships with the FT3470-52.
The tester allows the user to switch between the following measurement
functionsmodes: magnetic flux density, exposure (General Public), and
exposure (Occup.).
The user can switch between different axes (X-axis, Y-axis and Z-axis
and resultant RMS values) in each measurement mode
1.2 Features
Easy to view LCD display
Automatic recognition of magnetic field sensors
The 100 cm2sensor, intended for normal application, has a cross-sec-
tional area of 100 cm2.
The 3 cm2sensor*has a cross-sectional area of 3 cm2and is designed
for measuring detailed distribution.
100 cm2 Magnetic Field Sensor 3 cm2* Magnetic Field Sensor*
Switchable measurement methods
Switchable axis
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12 1.2 Features
Both waveform ( ) and resultant RMS ( ) output can be
selected.
By connecting the instrument to an oscilloscope or recorder with the
9759 Output Cable, you can observe waveforms and record resultant
RMS values.
Records up to 99 measurement data.
Measuring conditions can be stored to enable quick access to the same
operating conditions each time you power up.
The tester can be powered both by battery and AC power to enable
measurements in the field as well as permitting installation for long-term
measurements.
Waveform and resultant RMS value output
Waveform out-
put : enables measurement of magnetic field waveforms when
the tester is connected to an oscilloscope or recorder.
Resultant RMS
value output : permits recording of resultant values on a recorder or log-
ger, which is convenient for long-term measurements.
Memory function
Function for saving settings
Dual power supply
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1.3 Measurement Example 13
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This section provides a measurement example using this tester.
Measurement location : Anechoic chamber*1
Device under test : exposure level (general public) of magnetic
fields generated by an electric rice cooker
Measurement location, distance*2 :around, 30 cm *3
State of device under test *2 : Half-filled with water, and maxi-
mum heat setting
Measurement time : a few seconds at each measurement point
Storage of measurement data: tester memory and PC memory
Required equipment : FT3470-50 
100 cm
2
or 3 cm
2
Magnetic field sensor 
Batteries or AC adapter 
PC 
USB cable
*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 cer-
tain distance from the walls, which are made of a magnetic material.
*2 : Since these parameters depend on the measurement target, it is necessary to refer
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.
1.3 Measurement Example
Objective: to measure magnetic field exposure generated by products to determine
whether they pass or fail the requirements to obtain a CE marking.
Be sure to measure areas that
generate maximum exposure to
magnetic fields.
In this example, r1 = 30 cm.
DUT (device under test)
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14 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 cm2or 3 cm2Magnetic
Field Sensors.
2. Install the driver and the PC software on a PC.
3. Connect the tester to the PC using a USB cable.
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
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1.3 Measurement Example 15
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Setup, measurements and data storage
1. Select Exposure (general public) measurement function/mode (Gen-
eral 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)
4. Read the indicated value and store the measurement data in the tes-
ter (STORE).
Processing data after measurement
1. Start up the Application software (Data Viewer for FT3470) and trans-
fer the measurement data stored in the instrument to the PC.
2. Analyze the data transferred to the PC using Excel or other spread-
sheet program.
2
Read the indicated value and press
to save the measurement data.
3
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16 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 IC-
NIRP Guidelines" (P.114).
*2 : This cannot be measured by a magnetic field tester.
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
t100%
Exceeds
Yes
(Measurement data ± accuracy) ×
coupling factor (0 to 1)d100%*
t100%
Yes
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