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-
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3
4
5
6
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9
10
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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.
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7
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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.
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4
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6
7
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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
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9
10
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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
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12
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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)
XYZXYZXYZ...(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
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