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FT3470-51
FT3470-52
Instruction Manual
MAGNETIC FIELD HiTESTER
Be sure to read this manual before using the instrument
When using the instrument
IRUWKH¿UVWWLPH
Names and Functions of Parts
Measurement Preparations
Measurement Procedure
X
p.17
X
p.31
X
p.37
Safety Information
X p.4
Troubleshooting
Troubleshooting
Error Indication
X
X
p.111
p.112
EN
July 2018 Revised edition 1
FT3470F981-01 18-07H
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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
2
Magnetic Field Sensor ........................21
1.4.3 3 cm
2
Magnetic 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
FT3470F981-01 i
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11
APP
Index
6
7
4
5
8
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2
3
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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
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Contents
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 cm
2
Magnetic Field Sensor ..................... 109
7.3
3 cm
2
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
Appendix 113
Appendix 1 ICNIRP Guideline (Basic Restrictions) .. 113
Appendix 2 Coupling Factor in the ICNIRP Guidelines
.............................................................. 114 iii
1
4
5
6
7
8
Index
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1
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.
This instruction manual contains instructions for use of the device with the 100 cm
2
and 3 cm
2
Magnetic Field Sensor.
2
3
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 deale
U should you notice any unclear, incorrect or missing information.
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5
Trademarks
Microsoft and Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and other countries.
6
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 screen and the keys are indicated in brackets.
7
8
Mouse Operation
Click:
Right-click:
Double click:
Drag:
Activate:
Press and quickly release the left button of the mouse.
Press and quickly release the right button of the mouse.
Quickly click the left button of the mouse twice.
While holding down the left button of the mouse, move the mouse and then release the left button to deposit the chosen item in the desired position.
Click on a window on the screen to activate that window.
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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
FT3470-51 Magnetic Field Tester
FT3470-50 (1) CD (PC application software) (1)
USB cable (1) Instruction manual
(1)
LR6 alkaline battery (4) 9445-02 AC Adapter (1)
100 cm
2
Magnetic Field Sensor(1) Carrying Case (1)
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FT3470-52 Magnetic Field Tester
FT3470-50 (1) CD (PC application software) (1)
USB cable (1) Instruction manual (1)
3
LR6 alkaline battery (4) 9445-02 AC Adapter (1)
100 cm
2
Magnetic Field Sensor (1) 3 cm
2
Magnetic Field
Sensor (1)
9758 Extension Cable (1) 9759 Output Cable (1) Carrying Case (1)
6
7
8
This instrument has been calibrated to operate with the provided magnetic field sensor and should be used only with this sensor. Thus if multiple instruments are used, Before use make sure that the matching number (up to the hyphen) on the tester and the sensor are identical.
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10
Shipping precautions
Use the original packing materials when transporting the instrument, if possible.
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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 manual may negate the provided safety features.
Be certain that you understand the instructions and precautions in the manual before use. We disclaim any responsibility for accidents or injuries not resulting directly from instrument/ defects.
This manual contains information and warnings essential for safe operation 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
In the manual, the symbol indicates particularly important 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 manual (marked with the symbol) before using the relevant function.
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 extreme 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 death 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 correct operation of the instrument.
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Symbols for Various Standards
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 display 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.
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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Measurement Categories
The applicable measurement category is determined by the input module being used.
To ensure safe operation of measurement instruments, IEC 61010 establishes safety standards for various electrical environments, categorized 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 installations) 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 voltage to this instrument may expose testing personnel to high voltage that may at worst lead to electric shock and death.
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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 nor-
.
mally to ensure that the no damage occurred during storage or shipping. If you find any damage, contact your deal
HU
• 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 electric shock, so contact your dealer for repair.
2
3
4
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,
5
80%RH or less (no condensation)
Avoid the following locations that could cause an accident or damage to the instrument.
6
Exposed to direct sunlight
Exposed to high temperature
In the presence of corrosive or explosive gases 7
Exposed to water, oil, other chemicals, or solvents
Exposed to high humidity or condensation
Exposed to strong electromagnetic fields
Near electromagnetic radiators
8
9
Exposed to high levels of particulate dust
Subject to vibration
10
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
Connect only designated devices to the instrument terminals. To prevent damage, do not apply a voltage that is outside the specified range to the instrument.
Handling
• The instrument and the 100 cm
2
and 3 cm
2
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
2
and 3 cm
2
Magnetic Field Sensors have a 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. Especially, the 9758 Extension Cable and 9759 Output Cable should be handled with care.
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 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 conditions 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 abrasives 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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Overview
9
1.1 Product Overview
1
1
1.1 Product Overview
2
The FT3470-51, -52 Magnetic Field Tester is designed to measure magnetic flux density and level of magnetic field exposure.
3
• 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
2
and 3 cm
2
Magnetic Field Sensors.
Make sure that the matching number (up to the hyphen) on the tester and the magnetic field sensor are identical.
4
5
• 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 household 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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1.1 Product Overview
Basic
Functions
Application
Magnetic flux density
*1 measurements
Exposure level
*2 measurements
Functions in detail
Measuring the magnetic flux density of appliances 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
Reference
See 3.3 (P. 40)
Magnetic flux density (2 kHz to 400 kHz):
For magnetic flux density of high frequencies other than power frequencies
Measuring the exposure level of appliances and environments
See 3.4 (P. 43)
3.5 (P. 50)
Exposure level (general public):
This level is used for measuring exposure to magnetic 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 appliances and other consumer devices manufactured to conform to IEC/EN62233 and other standards.
This level corresponds to the general public exposure level in ICNIRP 2010.
Output functions
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 exposure level in ICNIRP 2010.
A function that makes it possible to output waveforms and resultant RMS value of magnetic 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)
*1: Available units are T, G, and A/m and the magnetic permeability of air being 4 the relationships between the different units are as follows: 1T=10
4
S
×10
-7
G, 1 A/m=4
S
×10
H/m,
-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 exposure.
See "Appendix" (P.113)
How big is the magnetic field?
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1.2 Features
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1.2 Features
1
Easy to view LCD display
The large LCD display makes for ease of viewing measurement values.
Automatic recognition of magnetic field sensors
2
Two magnetic field sensors of different sizes, the 100 cm
2
and 3 cm
2*
, are available for the tester
3
The 100 cm
2
sensor, intended for normal application, has a cross-sectional area of 100 cm
2
.
The 3 cm
2
sensor
*
has a cross-sectional area of 3 cm
2
and is designed for measuring detailed distribution.
4
The FT3470-50 automatically recognizes an attached sensor so there is no need to set a conversion rate whenever a sensor is connected.
5
100 cm
2
Magnetic Field Sensor 3 cm
2*
Magnetic Field Sensor
*
6
7
*: The 3 cm
2
Magnetic Field Sensor only ships with the FT3470-52.
Switchable measurement methods
8
The tester allows the user to switch between the following measurement functions modes: magnetic flux density, exposure (General Public), and exposure (Occup.).
9
Switchable axis
The user can switch between different axes (X-axis, Y-axis and Z-axis and resultant RMS values) in each measurement mode
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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 Output Cable, you can observe waveforms and record resultant
RMS values.
Waveform output : 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 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 operating conditions each time you power up.
Dual power supply
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.
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1.3 Measurement Example
1.3 Measurement Example
This section provides a measurement example using this tester.
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1
Objective: to measure magnetic field exposure generated by products to determine whether they pass or fail the requirements to obtain a CE marking.
2
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
State of device under test *2
: around, 30 cm
*3
: Half-filled with water, and maxi-
Measurement time mum heat setting
: a few seconds at each measurement point
3
4
5
DUT (device under test)
Be sure to measure areas that generate maximum exposure to magnetic fields.
6
In this example, r1 = 30 cm.
7
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
8
9
*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.
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*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 standard is revised.
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1.3 Measurement Example
1
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
Field Sensors.
2
or 3 cm
2
Magnetic
Connect the sensor in the sensor terminal.
Plug the adapter into the AC adapter terminal and the mains plug into an AC wall outlet.
Connect batteries in the battery compartment on the rear and fold out the stand.
2. Install the driver and the PC software on a PC.
3. Connect the tester to the PC using a USB cable.
USB cable
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1.3 Measurement Example
Setup, measurements and data storage
1
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) 2
3
Read the indicated value and press to save the measurement data. 4
3
4. Read the indicated value and store the measurement data in the tester (STORE).
5
Processing data after measurement
6
1. Start up the Application software (Data Viewer for FT3470) and transfer the measurement data stored in the instrument to the PC.
7
2. Analyze the data transferred to the PC using Excel or other spreadsheet program.
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1.3 Measurement Example
Analysis flow chart
START
Measurement data ± accuracy
< 100%
*
Yes t
100%
(Measurement data ± accuracy) × coupling factor (0 to 1) d
100%* t
100%
Yes
Exceeds
Calculate the induced current density with the human body model and a numerical analysis.
Evaluation goes below the basic restrictions.
Does not comply
Yes
Complies
* : 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.
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1.4 Names and Functions of Parts
1.4 Names and Functions of Parts
17
1
1.4.1
FT3470-50 Magnetic Field Tester
Front
Sensor terminal
Connect the 100 cm
2
, 3 cm
2
Magnetic Field Sensor
or a 9758
Extension Cable.
See 2.2 (P. 34)
Display
See (P. 20)
2
3
4
Keys
See (P. 18)
5
AC adapter terminal
Connect the AC adapter here.
See 2.1.1 (P. 31)
USB terminal
Connect a USB cable.
Output terminal
Connect a 9759 Output Cable.
See 6.1 (P. 95)
6
7
Back
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.
Camera tripod screw
Attach a commercially available camera tripod here.
8
9
10
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.
Battery compartment lid
Open to insert or replace batteries.
See 2.1.2 (P. 32)
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1.4 Names and Functions of Parts
keys
1
Keys
2
3
4
5
6
1
8
2
4
7
3
5
6
Description
• 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
MEM.MODE key enable/disable.
See 4.3 (P. 61)
Switches magnetic field measurement function/modes as show below:
Magnetic flux density (10 Hz to 400 kHz) o
magnetic flux density (10 Hz to 2 kHz) o magnetic flux density (2 kHz to 400 kHz) o sure level (Occup.) o
exposure level (General Public) magnetic field density (10 Hz to 400 kHz) o
...
o
expo-
See 3.3 (P. 40)
• Switches between Auto and Manual ranges.
Manual range: (magnetic flux density mode) AUTO
P
T) o r2 (200
P
T) o
r3 (2 mT) o
AUTO...
(exposure level mode) AUTO o r0 (2
P
T) o o r0 (20%) o r1 (200%) o
AUTO...
r1 (20
Auto range: automatically selects appropriate range during measurements.
• Switches measurement ranges during manual range.
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 maximum indicated value in the 1.6 A/m range.
• Use to output function.
• Switches between the following output functions.
OFF o
Waveform output o
resultant RMS value output o
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)
Shows saved measurement data.
See 3.7 (P. 54)
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7
Keys
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1.4 Names and Functions of Parts
Description
• 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)
1
Switches the displayed axis as shown below:
XYZ o
X o
Y o
Z o
XYZ...(XYZ indicates a resultant RMS value
*
) *:
X
2
+Y
2
+Z
2
See 1.5 "Definition of Measurement Items" (P.23)
2
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9
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7
3
4
5
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1.4 Names and Functions of Parts
Display
6
Note: Icons not described below cannot be used with this tester.
7
1, 2
3, 4
5
8
9
10
11
12
Memory
View Function
Displays saved data.
See 3.7 (P. 54)
4
5
1
2
3
6
7
8
9
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)
Icons
10
11
12
Description
Lights when Auto Range is selected.
Lights when measurement data is being stored.
Shows displayed axis. (XYZ indicates a resultant RMS value*.)
* X
2
+Y
2
+Z
2
See 1.5 "Definition of Measurement Items" (P.23)
Lights when holding a maximum value.
See 3.6 "Holding Maximum Value of the Resultant RMS Values" (P.53)
Lights when battery voltage becomes too low. (Replace the batteries when this icon lights.)
See "Function for checking low battery voltage" (P.38)
Lights during output of waveform.
Lights during output of a resultant RMS value.
Lights when automatic power off is on.
Indicates the number of the measurement data stored in memory.
See 3.7 "Checking and Deleting Saved Measurement Data" (P.54)
Indicates that a measurement value is an RMS value.
Flashes during the slow function is on.
Indicates the unit used for indicating exposure level.
See 3.4 "Measuring Exposure Level (General Public)" (P.43) ,
3.5 "Measuring Exposure Level (Occup.)" (P.50)
• Indicates the unit used for indicating magnetic flux density.
See 3.3 "Measuring Magnetic Flux Density" (P.40)
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1.4 Names and Functions of Parts
21
1
1.4.2
100 cm
2
Magnetic Field Sensor
Z
Output connector
Connects to the FT3470-50 sensor terminal.
See 2.2 (P. 34)
X Y
Sensor
X-axis coil
The dotted line indicates the
X-axis coil.
Matching number
Use the tester with a sensor that has an identical matching number (up to the hyphen).
Y-axis coil
The dotted line indicates the
Y-axis coil.
X-axis
Z-axis coil
Z-axis
The dotted line indicates the
Z-axis coil.
Y-axis
8
9
6
7
2
3
4
5
10
11
12
13
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22
1.4 Names and Functions of Parts
1.4.3 3 cm
2
Magnetic Field Sensor
Output connector
Connects to the FT3470-50 sensor terminal.
See 2.2 (P. 34)
X
Z
Y
Sensor
Y-axis coil
The line indicates the
Y-axis coil.
Matching number
Use the tester with a sensor that has an identical matching number (up to the hyphen).
X-axis coil
The line indicates the
X-axis coil.
X-axis
Z-axis coil
Z-axis
Y-axis
The line indicates the Z-axis coil.
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23
1.5 Definition of Measurement Items
1.5 Definition of Measurement Items
1
Instantaneous values obtained from the X-axis, Y-axis and Z-axis sensors at time t are referred to as, respectively, x ( t ) , y ( t ) and z ( t ) while the RMS values are respectively x ( t ) , y ( t ) and z ˆ ( t ) . The RMS values used by this tester represent the values shown below. (T refers to the
RMS integration time and is approximately 0.12 s when the slow function 2 is turned off and about 1 s when the function is on.) x ˆ ( t )
1
T t
³ t
T
{ x ( t )} 2 dt
3 y ˆ ( t )
T
1 ³ t t
T
{ y ( t )}
2 dt z ˆ ( t )
4
1
T
³ t t
T
{ z ( t )}
2 dt
5
A resultant RMS value ( t ) represents the following.
ˆ
( t )
^ ` ^ ` ^ `
2
• The IEC/EN622336 standards state that "Transient magnetic fields
6 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.
7
• To make a 1 s measurement that includes transient responses, measure using the slow function.
8
See 4.3.4 "Setting the Slow Function" (P.67)
The above can be summarized as shown below.
9
Resultant RMS value: ( t ) :
LCD reading, RMS output ( )
RMS value (per axis):
Instantaneous value (per axis):
*:The waveform output ( function. x ( t ) y ( t ) ˆ z ( t )
10 x ( t ) y ( t ) z ( t )
Waveform output*
( )
) cannot be configured in exposure level
11
Resultant RMS and RMS values (for each axis) can be viewed on a PC using the application software (on CD) supplied with the tester.
12
See 5.1 "Overview" (P.71)
13
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1.6 Screen Configuration and Key Operation Work Flow
1.6 Screen Configuration and Key Operation Work Flow
Measurement function/mode
See 3.3 (P. 40)
Magnetic flux density function
10 Hz to 400 kHz mode
T indicates selected mode.
Magnetic flux density mode
Exposure level mode
Press .
See 3.3 (P. 40)
Magnetic flux density function
10 Hz to 2 kHz mode
See 3.5 (P. 50)
Exposure level
(Occup.) mode
Press .
Press .
See 3.3 (P. 40)
Magnetic flux density function
2 kHz to 400 kHz mode
See 3.4 (P. 43)
Exposure level
(General Public) mode
Press .
Press .
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1.6 Screen Configuration and Key Operation Work Flow
25
Screens for verifying and setup
1
Screen name
Check Saved
Measurement Data
Screen access method
Press in each measurement function.
See 3.7.1 (P. 54)
Screen displayed
2
3
Set Auto Power Off When the power is off, hold down and and press or on [ APS ] .
See 4.3.1 (P. 61)
to turn
Set Audible Key
Feedback
When the power is off, hold down and . And press on [ BEEP ].
or to turn
See 4.3.2 (P. 63)
8
9
10
11
6
7
4
5
12
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1.6 Screen Configuration and Key Operation Work Flow
Screen name Screen access method
Change Unit Indication When the power is off, hold down and . And press or on [ Unit ].
See 4.3.3 (P.65)
to turn
Screen displayed
Set Slow Function When the power is off, hold down and . And press or on [ SLou ].
See 4.3.4 (P. 67)
to turn
Enable/disable the
MEM. MODE key when using MAX.
HOLD or the output function
When the power is off, hold down and press or on [ MEM.M
].
See 4.3.5 (P. 69)
. And
to turn
QuickSet When the power is off, hold
The slow function is on in
Exposure level (General (P. 44)
Public) mode when powering on.
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1.7 Measurement Work Flow
1.7 Measurement Work Flow
This section describes measurement work flow.
27
1
1. Supplying power
See 2.1.1 "Connecting the AC Adapter"
(P.31)
See 2.1.2 "Inserting and Replacing
Batteries" (P.32)
2
3
2. Connect a magnetic field sensor.
See 2.2 "Connecting a
Magnetic Field
Sensor" (P.34)
8
9
10
11
6
7
4
5
12
13
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1.7 Measurement Work Flow
3.
Turn on the power.
See 2.3 "Turning the
Power On and Off"
(P.35)
4.
Pre-measurement check
See 3.2 "Pre-measurement Check" (P.39)
5.
Measuring magnetic fields.
See 3.3 "Measuring
Magnetic Flux
Density" (P.40)
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6.
Transfer the measurement data to a
PC and use the application software to analyze the data.
See 5.3 "Graphic Representation of
Measurement Values" (P.85)
See 5.4 "Transferring
Recorded Data to a PC" (P.88)
1.7 Measurement Work Flow
29
1
8
9
6
7
2
3
4
5
10
11
12
13
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2.1 Supplying Power
31
Measurement Preparations
2
2
2
2.1 Supplying Power
3
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.
4
To avoid electrical hazards and damage to the instrument, do not apply voltage outside of this range.
5
• Make sure the power is turned off before connecting or disconnecting the AC adapter.
• Use the AC adapter for long-term measurements. 6
Connect the AC adapter according to the steps below
1.
Connect the 9445-02 AC Adapter to the AC adapter terminal.
7
8
9445-02 AC Adapter
2.
Connect the AC adapter plug to an AC wall outlet.
This completes AC adapter connection.
9
10
11
12
13
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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 accordance with local regulations.
• 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 locations without AC power.
• Disconnecting and connecting the AC adapter during measurements when the tester is both battery and AC powered may cause the measurement values to fluctuate greatly.
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2.1 Supplying Power
Use the following steps to insert (replace) the batteries.
Required batteries: LR6 alkaline battery (4)
1.
Remove the battery compartment lid.
Remove
33
2
2
Battery compartment lid
3
2.
When replacing batteries, first remove the old batteries.
4
3.
Insert the batteries taking care to match the polarity correctly.
5
4.
Attach the battery compartment lid.
Attach
Battery compartment lid
This completes the battery insertion (replacement) procedure.
10
11
12
13
8
9
6
7
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34
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 derating curve of the sensor during operation.
Connect the magnetic field sensor (100 cm
2
or 3 cm
2
) according to the steps below.
The 100 cm
2
sensor, intended for normal application, has a crosssectional area of 100 cm
2
.
The 3 cm
2
sensor has a cross-sectional area of 3 cm
2
and is designed for measuring detailed magnetic field distribution.
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 field sensor.
Output connector
Sensor terminal
To avoid damaging the output cable, grasp the connector, not the cable, when unplugging the cable.
This completes connection of 100 cm
2
and 3 cm
2
magnetic field sensors.
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2.3 Turning the Power On and Off
2.3 Turning the Power On and Off
35
Turn the power on (off) according to the steps below.
Turning on the power
Press .
2
2
3
Turning the power off
Hold down for 2 seconds or more.
2 seconds or more 8
9
10
To avoid battery depletion, turn the function selector OFF after use (the
Auto Power Save feature consumes a small amount of current).
11
6
7
4
5
12
13
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3.1 Measurement Preparations
37
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.
3
4
5
2.
Make sure that all segments on the LCD display light.
6
7
8
Then it will display the model number and estimated remaining battery life.
9
10
The model number will be shown as “3470.”
11
12
13
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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 power and then hold down and press .
See 4.2 "Initializing Function (Returning Settings to Their Factory Defaults)" (P.60)
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3.2 Pre-measurement Check
39
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.
Check the following before using the tester.
Inspection flow chart
1.
Check whether the magnetic field sensor, the tester case, the 9759 Output
Cable and the USB cable are damaged.
Damaged
Do not use the tester if any of the cables are damaged and the cable metal core is visible.
3
4
5
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.
6
7
No damage
2.
Check if the battery is depleted after powering up. A flashing ” mark indicates that there is no
Insufficient battery power remaining battery life.
Sufficient battery power
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)
8
9
10
Start measurements
11
12
13
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40
3.3 Measuring Magnetic Flux Density
3.3 Measuring Magnetic Flux Density
Measure magnetic flux density according to the steps below.
5
1 2
1.
Press to open the magnetic flux density function screen.
: wide range measurements
: power frequency range measurements
: extended power frequency range measurements
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3.3 Measuring Magnetic Flux Density
2.
Press to select measurement range.
41
Range number
Ranges are switched in the order shown below.
AUTO r0 r1 r2 r3
3
Range type
Auto-range
Manual range
Range number appears on the display r0 r1 r2 r3
4
Range
Automatically selects appropriate range during measurements.
2
P
T
20
P
T/
200
P
T
2 mT
5
6
7
• The ranges for the X, Y and Z axes are interlocked with maximum range and are automatically switched.
8
Range of guaranteed accuracy
At resultant RMS value R, a count of less than 100 is outside guaranteed accuracy.
Use an appropriate range.
9
Guaranteed accuracy range for resultant RMS value R
Magnetic flux density (10 Hz - 400 kHz, 10 Hz - 2 kHz, 2 kHz - 400 kHz) ǽ
Fixed range
0.1 mT 2.0 mT 3.464 mT
10 uT
1 uT
Ɔ
0.1 uT 2 uT 3.464 uT
20 uT
200 uT
34.64 uT
346.4 uT r3 r2 r1 r0
10
11
Ɔ The magnetic flux density for 3472 (10 Hz - 400 kHz, 10 Hz - 2 kHz) is 0.4 uT.
12
13
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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.
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3.4 Measuring Exposure Level (General Public)
43
3.4 Measuring Exposure Level
(General Public)
Use this mode to make measurements that conform to IEC/EN62233.
3.4.1
Preparing for Exposure Measurements
Use the flow chart below to determine whether to use the slow function setting.
3
Slow function setting assessment flow chart
Use this test to determine whether the test of a household appliance 4 should conform to IIEC/EN62233.
START
5
Waveform of magnetic field to be measured is known
Yes
No 6
7
Yes
A magnetic field that periodically fluctuates by 10 Hz or more?*
No 8
Turn off the slow function
Turn on the slow function
9
*: 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
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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.")
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45
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
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
Slow function off
3
0.12 s 0.13 s 0.12 s 0.13 s 0.12 s 0.13 s 0.12 s 0.13 s
Measurement
Internal processing
Measurement
Internal processing
Measurement
Internal processing
Measurement
Internal processing
4
5
1 s
6
3.4.2
Exposure Level
• Values obtained in an exposure measurement are not measures of the risk a specific magnetic field poses.
7
• In Exposure Level function, first order filters are used to approximate magnetic density flux levels in the ICNIRP guideline. Thus corner fre-
8 the "smoothed edges" referred to in IEC/EN62233.
• A discussion of acute health effects of exposure must account for coupling factors such as the human body and magnetic fields, threshold values under basic restrictions and safety factors (reduction factor) for general public and occupational exposure.
9
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).
10
11
See : For details, see "Appendix" (P.113).
12
13
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46
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.
Reference
Uniform magnetic field
Non-uniform magnetic field
㻹㼍㼓㼚㼑㼠㼕㼏㻌㼒㼕㼑㼘㼐㻌㼟㼑㼚㼟㼛㼞
㻹㼍㼓㼚㼑㼠㼕㼏㻌㼒㼕㼑㼘㼐
㻹㼍㼓㼚㼑㼠㼕㼏㻌㼒㼕㼑㼘㼐
㻿㼛㼡㼞㼏㼑
Measure at an angle away from the three coils
The locations indicated by (8 points on the spherical sensor surface) should be maintained in a vertical attitude relative to the DUT.
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3.4 Measuring Exposure Level (General Public)
47
3.4.3
Measurement Procedure
Measure exposure level (General Public) according to the steps below.
General Public Exposure is selected.
5
1 2 3
4
1.
Press to open the exposure level (General Public) 5 mode screen.
6
7
8
9
10
11
12
13
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48
3.4 Measuring Exposure Level (General Public)
2.
Press to select measurement range.
Range number
Ranges are switched in the order shown below.
AUTO r0 r1
Range type
Auto-range
Manual range
Range number
appears on the display r0 r1
Range
Automatically selects appropriate range during measurements.
20%
200%
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.
Guaranteed accuracy range for resultant RMS value R
Exposure level (General Public, Occup.) Fixed range
1%
Guaranteed accuracy range
10%
20% 34.64%
200% 346.4% r1 r0
Conditional guaranteed accuracy range (when none of X, Y, Z are O.L.)
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3.4 Measuring Exposure Level (General Public)
49
3.
Place the magnetic field sensor near the DUT.
3
• For accurate measurements, the tester should be located further away from the DUT than the magnetic field sensor.
4
• 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
5 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 operating conditions, refer to the IEC/EN62233.
6
• The center of the 100 cm
2
magnetic field sensor is located at right angles to the X, Y and Z axes. Since the distance from the 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. a mm
DUT
61 mm
7
8
4.
Read the indicated value.
9
10
5.
Press to save the measurement data.
This ends exposure (General Public) measurements.
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50
3.5 Measuring Exposure Level (Occup.)
3.5 Measuring Exposure Level (Occup.)
Measuring Exposure Level (Occup.)
1
5
2
1.
Press to open the exposure level (Occup.) mode screen.
Occup. Exposure is selected.
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3.5 Measuring Exposure Level (Occup.)
51
2.
Press to select measurement range.
Range number
Ranges are switched in the order shown below.
AUTO r0 r1
3
4
Range type
Auto-range
Range number
appears on the display
Range type
Automatically selects appropriate range during measurements.
5
Manual range r0 r1
20%
200%
6
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.
7
8
Guaranteed accuracy range for resultant RMS value R
Exposure level (General Public, Occup.) Fixed range
9
1%
Guaranteed accuracy range
10%
20% 34.64%
200% 346.4% r1 r0
Conditional guaranteed accuracy range (when none of X, Y, Z are O.L.)
10
11
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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.
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3.6 Holding Maximum Value of the Resultant RMS Values
53
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.
1, 2
3
1.
Press to hold the maximum value of the resultant RMS
4 value R and the icon lights.
5
6
7
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
8 may decrease. is invalid during MAX.HOLD and measurement data cannot be saved.
2.
Press again to turn off and clear held maximum
9 data value.
The screen returns to the state it had before was pressed.
10
11
12
13
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54
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.
3 2
1, 2
1.
Press to open the screen with the saved measurement data.
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3.7 Checking and Deleting Saved Measurement Data
55
2.
Press ( T ) to select the memory number of measurement data you wish to check.
Memory number
3
3.
Press to return to the measurement function screen.
4
5
6
7
8
This completes saving measurement data
ON.
blinks when measurement data is saved with the slow function 9
10
11
12
13
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3.7 Checking and Deleting Saved Measurement Data
3.7.2 Deleting Saved Measurement Data
Use the following steps to delete saved measurement data.
3 2
1, 2
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.
Highest memory number
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3.7 Checking and Deleting Saved Measurement Data
57
[ dAtA ] [ cLr ] appear when data is deleted.
3
The measurement data for the next highest memory number 4 appears.
5
3.
Press to return to the measurement function screen.
8
9
6
7
This completes deleting measurement data.
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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 measurement function screen appear.
This completes deleting all saved data.
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4.1 Function for Saving Settings (Saving Set Modes and Measurement Ranges)
59
Advanced Functions
4
4.1 Function for Saving Settings (Saving
Set Modes and Measurement Ranges)
2
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
4 up and hold down for 2 seconds or more.
5
6
Approx. 2 s
7
[ SAvE ] [ End ] appear and the tester returns to the screen prior to saving settings.
8
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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
Function / Mode
Range
Output
Auto power off
Buzzer
Axis
Slow function
Unit
Settings
Magnetic flux density
(10 Hz to 400 kHz)
AUTO
None
Enabled
Enabled
XYZ
OFF
T
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4.3 Other Functions
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
2 power.
• The tester is automatically turned off 10 minutes after the last key press.
• lights when the auto power off function is on. Before turning off the tester, the icon flashes and sounds a buzzer tone (for about 30 s).
Pressing any key during this interval postpones shutdown by 10 minutes.
4
Follow the steps given below.
1, 4 3
5
2
1, 2
6
7
1.
When the power is off, hold down and press .
2.
Press ( T ) to turn on .
8
9
10
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4.3 Other Functions
3.
Press and select [ y ] or [ n ].
[ y ] : set auto power off.
[ n ] : cancel auto power off. y n
4.
Press to save the setting.
[ SAvE ] [ End ] appear and the power is turned off.
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4.3 Other Functions
63
4.3.2
Setting Audible Key Feedback
This function causes the keys to generate a beep when pressed.
Follow the steps given below.
1, 4 3
2
2
1, 2
1.
When the power is off, hold down and press .
2.
Press ( T ) to turn on [ bEEP ].
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9
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11
6
7
4
5
12
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4.3 Other Functions
3.
Press and select [ y ] or [ n ].
[ y ] : audible key feedback is on.
[ n ] : audible key feedback is off. y n
4.
Press to save the setting.
[ SAvE ] [ End ] appear and the power is turned off.
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4.3 Other Functions
65
4.3.3
Changing Unit Indication
Use this function to change the unit indication. (The default unit is T.)
Follow the steps given below.
1, 4 3
2
2
1, 2
1.
When the power is off, hold down and press .
2.
Press ( T ) to turn on [ Unit ].
8
9
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11
6
7
4
5
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4.3 Other Functions
3.
Press and select [ T ], [ G ], or [ A/m ].
T, G, or A/m
4.
Press to save the setting.
[ SAvE ] [ End ] appear and the power is turned off.
Measured axes
Unit
X, Y, Z
R
T
G
A/m
T
G
A/m r0
2.000
P
T
20.00 mG
1.592 A/m
3.464
P
T
34.64 mG
2.757 A/m
Maximum display of range r1
20.00
P
T
200.0 mG
15.92 A/m
34.64
P
T
346.4 mG
27.57 A/m r2
200.0
P
T
2.000 G
159.2 A/m
346.4
P
T
3.464 G
275.7 A/m r3
2.000 mT
20.00 G
1592 A/m
3.464 mT
34.64 G
2757 A/m
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4.3 Other Functions
67
4.3.4
Setting the Slow Function
This function performs 1 s sampling and then displays the measurement value.
Follow the steps given below.
2
1, 4 3
2
1, 2
1.
When the power is off, hold down and press .
2.
Press (
T
) to turn on [ SLou ].
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6
7
4
5
12
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4.3 Other Functions
3.
Press and select [ y ] or [ n ].
[ y ] : sets the slow function.
[ n ] : cancels the slow function. y n
4.
Press to save the setting.
[ SAvE ] [ End ] appear and the power is turned off.
blinks while measuring with the slow function on.
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4.3 Other Functions
69
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.
2
Follow the steps given below.
4
1, 4 3
5
2
1, 2
6
7
1.
When the power is off, hold down and press .
2.
Press ( T ) to turn on [ MEM.M
].
8
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10
11
12
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4.3 Other Functions
3.
Press and select [ y ] or [ n ].
[ y ] : enables modes.
[ n ] : disables modes.
in MAX. HOLD mode and output
in MAX. HOLD mode and output y n
4.
Press to save the setting.
[ SAvE ] [ End ] appear and the power is turned off.
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5.1 Overview
71
Using Application Software
5
5.1 Overview
2
The application software supplied with the FT3470-50 provides the following functions.
Functions Functions in detail See:
3
Graphic representation of measurement values
Transfer recorded data to a PC
Configure the FT3470-
50 from a PC
View application software version
5.3 (P. 85)
Analyzing measurement data on a
PC
5.4 (P. 88)
Configuring the FT3470-50 from a
PC
5.5 (P. 91)
Checking version of application software
5.6 (P. 93)
5
The supplied PC driver and the application software must be installed on a PC to enable downloading data from the FT3470-50 tester.
6
See : 5.2 "Installing" (P.72)
Operating environment
Supported operating system
• Windows XP, Windows Vista
(32 bit/64 bit),
Windows 7 (32 bit/64 bit)
• The hardware environment comprising CPU, memory, display, etc. must conform to operating system recommendations.
Hard disk capacity
• 10 MB or more free disk space
Interface
• USB Ver. 1.1 or later
• One FT3470-50 unit can be connected at any one time
7
8
9
USB hubs with a power consumption exceeding 100 mA must be selfpower hubs.
10
CD configuration
Folder
Japanese
English
Folder containing the application configuration file and a file for installing FT3470-
50 USB driver
11
File accuracy.dat
Accuracy file 12
Select "small font" for the operating system since "large font" may cause irregularities in screen indications.
13
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5.2 Installing
5.2 Installing
The major installation procedures are listed below.
1
2
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.
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5.2 Installing
Windows 7
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" window.
2
3
3.
Click [ Next ].
4.
Specify the installing destination folder and click [ Next ].
9
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8
5
6
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5.2 Installing
5.
Click [ Next ].
6.
Click [ Yes ].
7.
Click [ Install ].
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5.2 Installing
75
8.
Click [ Close ].
2
3
9.
Remove the CD from the DVD/CD drive.
5
6
Windows Vista
1.
Insert the supplied CD in the DVD/CD drive.
7
2.
Open the folder [ English ] included on the CD, then execute driverSetup.msi.
This will activate the installer and open the "HIOKI USB Single
8
Driver" window.
9
10
11
12
13
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5.2 Installing
3.
Click [ Next ].
4.
Specify the installing destination folder and click [ Next ].
5.
Click [ Next ].
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6.
Click [ Continue ].
7.
Click [ Install ].
8.
Click [ Close ].
9.
Remove the CD from the DVD/CD drive.
5.2 Installing
77
2
3
9
10
11
12
13
7
8
5
6
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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 driverSetup.msi. This will activate the installer and open the
"HIOKI USB Single Driver" window.
3.
Click [ Next ].
4.
Specify the installing destination folder and click [ Next ].
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5.
Click [ Next ].
6.
Click [ Continue Anyway ].
5.2 Installing
79
2
3
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12
13
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8
5
6
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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 ].
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5.2 Installing
13.
Select "Install the software automatically" and click [ Next ].
81
14.
Click [ Continue Anyway ].
15.
Click [ Finish ].
2
3
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10
11
12
13
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8
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6
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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.
4.
Click [ Next ].
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5.2 Installing
5.
Click [ Change ], then specify the installing destination folder.
Click [ Next ].
83
Click this button when specify the installing destination.
2
3
6.
Click [ Install ].
7
8
7.
When installation ends, click [ Finish ] in the checking window.
9
5
6
Installation is now complete.
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5.2 Installing
Select [ Program ] - [ HIOKI ] - [ DATA VIEWER for FT3470 ] - [DATA VIEWER for FT3470 (EN)] from the [ Start ] menu of Windows
to activate the application.
Uninstallation
1.
Select [ Setup ] - [ Control Panel ] from the [ Start ] menu, then click [ Add/Remove Programs ].
2.
Select "DATA VIEWER for FT3470 (EN)," then click [ Remove ] or [ Change/Remove ].
3.
Uninstall the program by following the procedure appearing on the screen.
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5.3 Graphic Representation of Measurement Values
5.3 Graphic Representation of Measurement Values
Measurement values obtained using the FT3470-50 tester can be imported to a PC for graphic representation.
1.
Turn on the FT3470-50 and select [ HIOKI ]-[
2
FT3470 ]-[DATA VIEWER for FT3470 (EN)] from the Start but- ton on the PC.
3
2.
Connect the tester to a PC using the supplied USB cable.
(Push the cable plugs all the way in.)
USB cable than the
on the FT3470-50 lights and all key operations other 7
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.
8
9
5
6
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5.3 Graphic Representation of Measurement Values
3.
Click the " Effective Value Logger " tab in the " HIOKI DATA
VIEWER for FT3470 " window to open the " Effective Value
Logger " screen.
3.
7.
6.
Menu item
Fixed Interval
Average
Description
Samples at fixed intervals to obtain 20 points per division.
Calculates the average of sampling data obtained in drawing 1 point.
(Equation)
1
T t
³ t
T x
2 dt
1
N
N
¦ n 1 n
2
T
1 t
³ t
T y
2 dt
1
N
N
¦ n 1 n
2
1
T t
³ t
T z
2 dt
1
N n
N
¦
1
ˆ n
2
ˆ 2 2 z ˆ
2
Maximum
Drop-down list box for sampling interval
R/ x/ y/ z
File Read
CSV Save
Start
Stop
Indicates data when resultant RMS value R is at its maximum among the sampling data obtained in drawing 1 point.
Selects sampling interval. When the slow function is set to ON, 1 s/div and 5 s/div are not available.
Turn R, x, y and z data indication On and Off.
Represents saved data in graphic form and saves it as graph data.
Saves graph data.
Starts measurements.
Stops measurements.
Prints graphs
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5.3 Graphic Representation of Measurement Values
4.
Set sampling method, sampling interval and start measurements.
Sampling method
Sampling interval
2
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.
3
5
6
7
6.
Click [ Stop ] to stop measuring. Then click [ CSV Save 8 the graph data.
7.
Click [ File Read ] to read out saved data. Or click [ Print
9 the graph.
8.
Disconnect the USB cable from the tester and the PC and turn off the tester.
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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 ]-[DATA VIEWER for FT3470 (EN)] from the Start but- ton on the PC.
2.
Connect the tester to a PC using the supplied USB cable.
(Push the cable plugs all the way in.)
USB cable
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 calculations of resultant RMS values and indicates that R is within this range. These values may be used in the standard.
• Accuracy for the " Entire Read " tab is shown in the table below.
Measurement function
Magnetic flux density
Exposure level
Accuracy
±3.5%rdg. ±0.5%f.s.
±5.0%rdg. ±0.5%f.s.
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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.
4.
3.
6.
5.
2
3
Screen item
Read
Memory Clear
CSV Save
File Read
Description
Transfers data from the FT3470-50 tester to a PC.
5
Deletes data recorded on the FT3470-50.
Saves displayed data.
Displays saved data.
6
Unit Change drop-down list box Selects unit for magnetic flux density data.
Unit Change
Rxyz / Displayed Value on the
FT3470-50
7
Changes unit for indicated magnetic flux density data to unit selected in the Unit
Change drop-down list box.
Selects Rxyz or value displayed on the
FT3470-50.
8
Print Prints displayed data.
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.
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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.
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5.5 Configuring the FT3470-50
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
2 ton on the PC.
2.
Connect the tester to a PC using the supplied USB cable.
3
(Push the cable plugs all the way in.)
5
USB cable
6
on the FT3470-50 lights and all key operations other than the are disabled.
7
Only one FT3470-50 tester can be connected to a PC at one time. 8
9
10
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5.5 Configuring the FT3470-50
3.
Click the " Configuration " tab in the " HIOKI DATA VIEWER for
FT3470 " window to open the "Configuration" screen.
4.
3.
6.
5.
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
Setting Read
Saves made settings.
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.
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5.6 Viewing Version Information
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 ]-[DATA VIEWER for FT3470 (EN)] from the Start but- ton on the PC.
2
2.
Connect the tester to a PC using the supplied USB cable. 3
(Push the cable plugs all the way in.)
USB cable 5 than the
on the FT3470-50 lights and all key operations other
6
are disabled.
7
Only one FT3470-50 tester can be connected to a PC at one time.
3.
Click the " Version " tab in the " HIOKI DATA VIEWER for
8
FT3470 " window to open the " Version " screen.
9
10
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5.6 Viewing Version Information
4.
Disconnect the USB cable from the tester and the PC and turn off the tester.
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6.1 Outputting Waveform and Resultant RMS Values
95
Advanced Measurements
6
6.1 Outputting Waveform and Resultant
RMS Values
2
3
Do not simultaneously connect the USB and output terminals of the tester to external devices.
If the ground potential of the device connected to the USB terminal differ from that of the device connected to the output terminal, a
4 short circuit current could flow via the FT3470-50 and damage the device connected to the USB terminal by fire.
When both terminals need to be used to connect, for example, a PC to the USB terminal and an oscilloscope to the output terminal, make sure that both devices are connected to ground or use a
5 6 device (for example, a recorder) with insulated input terminals on the output terminal side. 6
USB terminal device
7
Output terminal device 8
9
Never connect the tester as shown in the figure. 10
11
12
13
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6.1 Outputting Waveform and Resultant RMS Values
• Do not short circuit the output terminals or apply a voltage as this could damage them.
• When connecting the tester to an insulation BNC, connect the 9759
Output Cable to a 9489 Extension Cable before connecting it to an insulation BNC. The 9759 Output Cable is a metal BNC that could damage an insulation BNC if connected to it directly.
The 9489 Extension Cable should function as a safe insulation BNC.
These are consumables that should be replaced with new ones when damaged.
You can observe waveforms and resultant RMS values by connecting the instrument to an oscilloscope or recorder with the 9759 Output
Cable.
Waveform output :
Resultant RMS value output : 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.
• The output may become unstable during switching of measurement modes or ranges.
• The extremely high sensitivity of output during measurements in low ranges (r0) makes noise inherent to the device more noticeable. Select an appropriate range on an oscilloscope before viewing the waveform output.
(When using the magnetic flux density function's minimum range (r0), a 0.1 mT waveform corresponds to 10 mV of output.Then set the oscilloscope to a range appropriate for 50 mV/div measurements)
• During the output of waveform and resultant RMS values, the auto range is canceled, and the range is fixed in the selected range.
• Output of waveform and resultant RMS values cancels the auto range and the tester is locked in the selected range.
• Use a high input impedance connection to connect the tester to an oscilloscope.
• Displaying saved measurement data while using the output function causes output to turn off.
Output waveforms and resultant RMS values according to the steps below.
4
3
5, 6
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6.1 Outputting Waveform and Resultant RMS Values
1.
Push the 9759 Output Cable all the way into the FT3470-50 output terminal.
2
9759 Output Cable
3
2.
Connect the output cable plug in the oscilloscope, recorder, or etc. connector.
4
3.
Press and select a measurement function/mode.
5 6
6
Magnetic flux density measurement function
10Hz-400kHz mode is selected in this example.
7
8
4.
Press to confirm measurement range selection.
9
Range No.
10
11
12
13
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6.1 Outputting Waveform and Resultant RMS Values
Measurement function
Magnetic flux density
Range r0 r1
Output rate
Waveform output ࠉ (MON) Level value (REC)
AC 100 mV/
P
T
AC 10 mV/
P
T
AC 1 mV/
P
T
DC 100 mV/
DC 10 mV/
DC 1 mV/
P
P
P
T
T
T r2 r3 AC 100 mV/ mT DC 100 mV/ mT r0
-
DC 10 mV/%
Exposure level r1
-
DC 1 mV/%
The waveform output (MON) cannot be configured in exposure level function.
5.
Pressing enables output and automatically cancels auto power off ( goes off)
Lights
(During waveform output)
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6.1 Outputting Waveform and Resultant RMS Values
6.
Each press of the , changes the display as follows: Output OFF o
Waveform (
( lights) o
OFF
lights) o
Resultant RMS value
(The waveform output ( lights), only for magnetic flux density function)
(resultant RMS values are output via the X-axis.)
2
Lights 3
(During resultant RMS value output)
This completes output of waveforms and resultant RMS values.
4
5 6
6
11
12
13
7
8
9
10
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Specifications
7.1 FT3470-50 Magnetic Field Tester
101
7
7.1 FT3470-50 Magnetic Field Tester
2
The 100 cm
2
or 3 cm
2
Magnetic Field Sensor is attached to the FT3470-50.
3
7.1.1
Basic Specifications
1. Measurement item
Magnetic flux density
Exposure level
Measured axes
10 Hz to 400 kHz / 10 Hz to 2 kHz / 2 kHz to 400 kHz
General Public/Occupational
X, Y, Z
Measurement method
True RMS
Range switching auto/manual
2. Indication
Display
Indicated axes
Maximum display value
Magnetic flux density units
Exposure level unit
Auto Range indication
RMS value indication
Maximum value hold indication
Output function indication
Auto power off enabled indication
Battery low warning
LCD display
X, Y, Z, R (resultant RMS value)
2000 count for single axis and 3464 count for resultant RMS value R
T, G, A/m
%
icon lights (measurement accuracy is not guaranteed when this icon is on)
4
5
7
8
9
10
11
12
13
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102
7.1 FT3470-50 Magnetic Field Tester
Display update rate
Approx. 250 ms (slow function off)
Approx. 2 s (slow function on)
7.1.2 Measurement Accuracy
1.Guaranteed accuracy specifications
Guaranteed accuracy condition
Defined for the FT3470-50 when used with a 100 cm
Field Sensor with the same phase number.
2
or 3 cm
2
Magnetic
23°C±5°C 80% RH or less (no condensation) Accuracy guarantee for temperature and humidity
Guaranteed accuracy period
2. Magnetic flux density
1 year
Magnetic Field
Sensor
100 cm
2
Magnetic Field
Sensor
3 cm
2
Magnetic Field
Sensor
Measured axes
Range
Accuracy specification
Measurement mode
X, Y, Z r r r
0
1
2
10 Hz to 400 kHz,
10 Hz to 2 kHz,
2 kHz to 400 kHz
Effective measuring range
0.050 to 2.000
P
T
0.50 to 20.00
P
T
5.0 to 200.0 P T
R r 3 r r r
0
1
2
10 Hz to 400 kHz,
10 Hz to 2 kHz,
2 kHz to 400 kHz
0.050 to 2.000 mT
0.100 to 3.464
P
T
1.00 to 34.64
P
T
10.0 to 346.4 P T r 3 0.100 to 3.464 mT
X, Y, Z
R r r r r r r
0
1
2
3
0
1 r 2 r 3
10 Hz to 400 kHz,
10 Hz to 2 kHz
0.200 to 2.000
P
T
2 kHz to 400 kHz 0.050 to 2.000
P
T
0.50 to 20.00
P
T
10 Hz to 400 kHz,
10 Hz to 2 kHz,
2 kHz to 400 kHz
5.0 to 200.0 P T
0.050 to 2.000 mT
10 Hz to 400 kHz,
10 Hz to 2 kHz
0.400 to 3.464
P
T
2 kHz to 400 kHz 0.100 to 3.464
P
T
1.00 to 34.64
P
T
10 Hz to 400 kHz,
10 Hz to 2 kHz,
2 kHz- to 400 kHz
10.0 to 346.4
P
T
0.100 to 3.464 mT
Accuracy
±3.5%rdg.
±0.5%f.s.
±3.5%rdg.
±0.5%f.s.
±3.5%rdg.
±0.5%f.s.
±3.5%rdg.
±0.5%f.s.
Valid measurement frequency range
Measurement function Measurement mode
Magnetic flux density
10 Hz to 400 kHz
10 Hz to 2 kHz
2 kHz to 400 kHz
Valid measurement frequency range
50 Hz to 100 kHz
50 Hz to 1 kHz
5 kHz to 100 kHz
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7.1 FT3470-50 Magnetic Field Tester
103
3. Exposure level (General Public, Occup.)
Accuracy specifications
Measured axes Range
X, Y, Z
R r 0 r 1 r 0 r 1
Effective measuring range
0.50 to 20.00%
05.0 to 200.0%
1.00 to 34.64%
10.0 to 346.4%
Accuracy
Smoothed edges 50 Hz to 1 kHz
±3.5%rdg.±0.5%f.s.
Smoothed edges 1 kHz to 100 kHz
±5.0%rdg.±0.5%f.s.
2
Smoothed edges
Exposure level is an IEC/EN62233-defined measurement technique applying time domain evaluation to magnetic flux density as described by the
ICNIRP 2010 guidelines.
It differs by a maximum of 3 dB from the ICNIRP 2010 corner frequency.
3
4
5
4. Characteristic
Crest factor
Effect of exposure to power-frequency fields
3 or less (But exposure level (occupational) for r1 and r2 is 1.45 or less.)
In a 20 kV/m, 60 Hz field at resultant RMS value R
Magnetic field sensor
100 cm
2
Magnetic Field Sensor
3 cm
2
Magnetic Field Sensor
Influence of resultant RMS value R
Magnetic flux density
㸦
10 Hz to 400 kHz
㸧
0.02
P
T or less
0.15
P
T or less
Exposure level
(General Public)
0.1% or less
0.6% or less
Effect of tester on magnetic field
With magnetic sensor directly connected to the tester
Magnetic field sensor
100 cm
2
Magnetic Field Sensor
3 cm
2
Magnetic Field Sensor
Influence of resultant RMS value R
±1.5%rdg. or less
±2.5%rdg. or less
Noise level
(reference value)
Magnetic field sensor
100 cm
2
Magnetic Field Sensor
3 cm
2
Magnetic Field Sensor
Measurement function/mode
Magnetic flux density
(10 Hz to 400 kHz)
RMS integral time
(reference value)
Approx. 120 ms (slow function off)
Approx. 1 s (slow function on)
Resultant RMS value R
0.050
P
T
0.150 P T
7
8
9
10
11
12
13
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104
7.1 FT3470-50 Magnetic Field Tester
7.1.3 Output Function
Supporting function Magnetic flux density (T), Exposure level (%)
Output type MON : 3-axis waveform output
REC : Resultant RMS level output (output via the X-axis.)
Exposure level output (output via the X-axis.)
Output rate 0.1 mV/display value count
An output rate based on the magnetic flux density unit T is used, even if the magnetic flux density unit is G or A/m.
Measurement function/ Range
Magnetic flux density
Exposure level r 3 r 0 r 1 r 0 r 1 r 2
Output rate
Waveform output (MON)
AC 100 mV/
P
T
AC 10 mV/
P
T
AC 1 mV/ P T
AC 100 mV/mT
-
-
Level value (REC)
DC 100 mV/
P
T
DC 10 mV/
P
T
DC 1 mV/ P T
DC 100 mV/mT
DC 10 mV/%
DC 1 mV/%
Output accuracy
Type
REC
Measurement function
Magnetic flux density
Exposure level
Measurement
Mode
10 Hz-400 kHz
10 Hz-2 kHz
2 kHz-400 kHz
General Public/
Occupational
Output accuracy
±3.5%rdg.±3 mV
Effective frequency range
50 Hz to 100 kHz
50 Hz to 1 kHz
±3.5%rdg.±3 mV
5 kHz to 100 kHz
50 Hz to 1 kHz
±5.0%rdg.±3 mV 1 kHz to 100 kHz
10 Hz-400 kHz 50 Hz to 100 kHz
MON
Magnetic flux density
10 Hz-2 kHz
2 kHz-400 kHz
±3.5%rdg.±10 mV 50 Hz to 1 kHz
5 kHz to 100 kHz
Output accuracy (MON) is defined under the condition that the input is sine wave with no distortion.
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7.1 FT3470-50 Magnetic Field Tester
105
7.1.4
Functional Specifications
Magnetic flux density unit switching
G (1 T = 10
4
G)
A/m (1 T = 4
S
´10
-7
A/m, assuming a magnetic permeability of 4
S
´10
-7
H/m for air)
Accuracy is defined in terms of the magnetic flux density unit T.
2
Measured axes
X, Y, Z
R unit
T
G
A/m
T
G
A/m r 0
2.000
P
T
20.00 mG
1.592 A/m
3.464
P
T
34.64 mG
2.757 A/m
Maximum display for range r 1
20.00
P
T
200.0 mG r 2
200.0
P
T
2.000 G
15.92 A/m
34.64
P
T
346.4 mG
27.57 A/m
159.2 A/m
346.4
P
T
3.464 G
275.7 A/m r 3
2.000 mT
20.00 G
1592 A/m
3.464 mT
34.64 G
2757 A/m
3
4
Slow function
Holds the maximum value
Auto power off
Buzzer sound
Can be turned on and off (default: off).
Functionality for applying the 1 s RMS integration time required by IEC/
EN62233
Holds the maximum value of the resultant RMS value R and the values of each axis.
Memory function Up to 99 measured value data points can be saved.
1 data point: Resultant RMS value R and the corresponding measured values for each axis
5
10.5 min after last operation, buzzer warning before shutdown/wait period can be extended/function can be cancelled after activation
7
Can be turned on/off (default : on)
8
7.1.5
General Specifications
9
Product warranty period
Interface
Temperature characteristics
Place of use
Storage temperature and humidity
Operating temperature and humidity
3 years
USB 1.1
0.1 x accuracy specification/°C at 0 to 40°C
Indoors, up to an altitude of 2000 m
-10°C to 50°C, 80% RH or less (no condensation)
0°C to 40°C, 80% RH or less (no condensation)
10
11
12
13
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106
7.1 FT3470-50 Magnetic Field Tester
Power supply
Continuous operating time
Maximum rated power
External dimensions
Weight
Standards Applying
Magnetic Field
Tester composition
Accessories
Options
Rated power supply voltage: 100 VAC to 240 VAC, Rated power supply frequency:
50 Hz/ 60 Hz
(Voltage fluctuations of ±10% from the rated supply voltage are taken into account.)
Four LR6 alkaline battery 1.5 V or 9445-02 AC Adapter
Approx. 10 hours (with sensor connected, continuous, low load operation)
1.0 VA (AC adapter), 0.8 VA (Battery)
Approx 100 trusions)
× 150 × 42 mm (3.94”W × 5.91”H × 1.65”D) (not including pro-
Approx 830 g (29.3 oz) (batteries included)
Safety EN61010 Pollution degree 2
EMC EN61326
FT3470-50 Magnetic Field Tester ................................................ 1
100 cm
2
Magnetic Field Sensor (3-axis ) .................................... 1
3 cm
2
Magnetic Field Sensor (3-axis) .......................................... 1
Instruction manual........................................................................ 1
CD (PC application software)....................................................... 1
USB cable .................................................................................... 1
LR6 alkaline battery ..................................................................... 4
9758 Extension Cable .................................................................. 1
9759 Output Cable ....................................................................... 1
9445-02 AC Adapter .................................................................... 1
Carrying Case .............................................................................. 1
9445-02 AC Adapter
9758 Extension Cable
9759 Output Cable
7.1.6 Application Software
Name
Connected instrument
Connection method
Content recognition
Computer
Supported operating system
Language
Memory
HDD
DATA VIEWER for the FT3470
FT3470-50 Magnetic Field Tester
USB Ver.1.1 or later (Only one FT3470-50 tester can be connected to a PC at one time)
Serial number
PC-AT compatible machines (Processor operating at 1 GHz)
Windows XP, Windows Vista
(32 bit/64 bit), Windows 7 (32 bit/64 bit)
English or Japanese at least 512 MB (recommended)
Required hard disk space: at least 30 MB
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7.1 FT3470-50 Magnetic Field Tester
107
Display
Display tab
Maximum number of data handled
Recording method
1024×600 dots or higher
Effective value logger, Entire read, Configuration, Version information
32000 data (Effective value logger), 99 data (Entire read)
CSV format (Effective value logger), (Entire read)
SET format ( Configuration)
2
7.1.7
Equations and Functions
Equations 3
Equation
Function Item
Symbol
Waveform output
Continuous
-
Discrete
-
4
Instantaneous value for each axis at time t x ( t y ( t )
)
-
-
5 z ( t )
Resultant value at time t
R ( t )
-
^ ` ^ ` ^ `
2
(effective value logger) each axis at time t
(Integral time =
T, interval
[t - T, t]) x ( t ) y ( t )
ˆ z ( t )
1
T
³ t t
T
{ x ( t )}
2 dt
1
T
³ t t
T
{ y ( t )}
2 dt
1
T
³ t t
T
{ z ( t )}
2 dt
Where RMS value per
' t interval is d n d n
( 1 N , N
' t T ) ,
1
N
N ¦ n 1
ˆ n
2
Where RMS value per
' t interval is
ˆ y n
( 1 d n d
N , N
' t T ) ,
1
N
N ¦ n 1
ˆ n
2
Where RMS value per
' t interval is
ˆ z n
( 1 d n d
N , N
' t T ) ,
1
N
N ¦ n 1 z ˆ n
2
7
8
9
10
11 resultant RMS output (effective value logger)
RMS value
(Integral time =
T, interval [t -
T, t])
( t ) ^ ` ^ ` ^ `
2
^ ` ^ ` ^ `
2
12
• x , y and z in the table can be used to represent both magnetic flux density and exposure values.
13
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108
7.1 FT3470-50 Magnetic Field Tester
• 1 G=1×10
-4
T, 1 A/m=4
S
×10
-7
T (magnetic permeability of air: 4
S
×10
-7
H/m)
• Actual RMS values are calculated using a discrete algorithm.
Example of characteristics when tester is used with a sensor
(magnetic flux density mode)
10
0
-10
Magnetic flux density mode
(10 Hz to 400 kHz)
-20
Magnetic flux density mode
(2 kHz to 400 kHz)
-30
-40
-50
10 100 1k 10k
Frequency [Hz]
Magnetic flux density mode
(10 Hz to 2 kHz)
100k 1M
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7.2 100 cm2 Magnetic Field Sensor
109
7.2 100 cm
2
Magnetic Field Sensor
Specifications
Accuracy at 23°C±5°C, 80% RH or less (no condensation)
Sensor crosssectional area
Rated magnetic flux density
Frequency characteristics
Measured axes
Place of use
Storage temperature and humidity
Operating temperature and humidity
Period of guaranteed accuracy
External dimensions
Weight
Application
Standard
100 cm
2
2 mT at a single axis (There is a derating characteristics dependent on frequency)
10 Hz to 400 kHz
2
3
X, Y, Z
Indoors, up to an altitude of 2000 m
-10°C to 50°C, 80% RH or less (no condensation)
0°C to 40°C, 80% RH or less (no condensation)
1 year
Approx.
I
122 × 295 (L) mm
Approx. 210 g (7.4 oz)
Safety EN61010 Pollution degree 2
EMC EN61326
4
5
7
8
Frequency-dependent derating characteristics
㻝㻜㻜㻜㻜 9
㻝㻜㻜㻜
10
㻝㻜㻜
11
㻝㻜
12
㻝
㻝㻜 㻝㻜㻜 㻝㼗
Frequency [Hz]
㻝㻜㼗 㻝㻜㻜㼗 㻝㻹
13
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110
7.3 3 cm2 Magnetic Field Sensor
7.3 3 cm
2
Magnetic Field Sensor
Specifications
Accuracy at 23°C±5°C, 80% RH or less (no condensation)
Sensor crosssectional area
Rated magnetic flux density
Frequency characteristics
Measured axes
Place of use
Storage temperature and humidity
Operating temperature and humidity
Period of guaranteed accuracy
External dimensions
Weight
Application
Standard
3 cm
2
2 mT at a single axis (There is a derating characteristics dependent on frequency)
10 Hz to 400 kHz
X, Y, Z
Indoors, up to an altitude of 2000 m
-10°C to 50°C, 80% RH or less (no condensation)
0°C to 40°C, 80% RH or less (no condensation)
1 year
Approx.
I
27 × 165 (L) mm
Approx. 95 g (3.4 oz)
Safety EN61010 Pollution degree 2
EMC EN61326
Frequency-dependent derating characteristics
㻝㻜㻜㻜㻜
㻝㻜㻜㻜
㻝㻜㻜
㻝㻜
㻝
㻝㻜 㻝㻜㻜 㻝㼗 㻝㻜㼗
Frequency [Hz]
㻝㻜㻜㼗 㻝㻹
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8.1 Troubleshooting
111
Maintenance and Service
8
8.1 Troubleshooting
2
If damage is suspected, check the "Before returning for repair" section before contacting your dealer.
3
Before returning for repair
4
Symptom Check Remedy
Tester does not go on.
Power turns off during use*
• Check whether batteries have been inserted.
• Check if battery power is low.
• Check whether batteries are properly inserted.
• Replace batteries with new ones.
• Insert batteries properly.
5
6
goes on.
Replace batteries with new ones.
Power turns off soon
7
8
*: When auto power off is on ( after the last key was pressed lights), the tester will shut down 10 minutes
8
See : 4.3.1 "Setting Auto Power Off (Saving Battery Power)" (P.61)
When sending the instrument for repair, remove the batteries and pack carefully to prevent damage in transit. Include cushioning material so the instrument cannot move within the package. Be sure to include details of the problem. Hioki cannot be responsible for damage that occurs during shipment.
9
10
11
12
13
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112
8.2 Error Indication
8.2 Error Indication
If any of error indications E.001 to E.005 appear on the display, the tester requires repair and should be returned to the dealer or local service station.
Error number
E.001
Description Remedy
E.002
E.003
E.004
E.005
Microprocessor ROM checksum error
Microprocessor RAM R/W error
Requires repair.
Memory checksum error
Model name error
Memory R/W error
8.3 Version Display
In order to display the version of the FT3470-50, hold down while powering up. The version will be displayed after the model name (3470).
8.4 Cleaning
To clean the instrument, wipe it gently with a soft cloth moistened with water or mild detergent. Never use solvents such as benzene, alcohol, acetone, ether, ketones, thinners or gasoline, as they can deform and discolor the case.
8.5 Service
Calibrations
• The calibration period varies depending on the status of the instrument or installation environment. We recommend that the calibration period be determined in accordance with the status of the instrument or installation environment. Please contact your Hioki distributor to have your instrument periodically calibrated.
• Since the tester must be calibrated together with the magnetic field sensor, send in both the tester and the magnetic field sensor when recalibration is required.
• Since the tester must be calibrated together with the sensor, the tester must be returned when a magnetic field sensor requires repair or when other sensors are purchased to enable calibration with the repaired (or new) sensor.
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Appendix 1 ICNIRP Guideline (Basic Restrictions)
113
Appendix
Appendix 1 ICNIRP Guideline
(Basic Restrictions)
2
The exposure levels set for this tester are based on the ICNIRP (International Commission on Non-Ionizing Radiation Protection) Guidelines.
3
Basic restrictions apply to current density, SAR and power density.
Threshold values have been set on the levels of these physical quantities that affect human health (for example, headaches). Occupational
4 exposure level is 1/10 and general public exposure level is 1/50 of this threshold value. (See figure below.)
The ICNIRP Guidelines provide reference levels - for assessing the basic restrictions - that state the magnetic field and electric field levels
5 when the coupling of the human body, magnetic field and electric field are at maximum (coupling factor 1).
6
Basic restrictions ˁ Current density ˁ SAR* ˁ Power density
Magnetic field or electric field 7
Threshold value
(settings regarding the effect on health)
8
Safety factor (Reduction factor) 10
Safety factor
(Reduction factor) 50
Occupational exposure (1/10)
Reference level
(occupational exposure)
9
(1/5)
General public exposure (1/50)
*: Specific energy absorption rate
Reference level
(general public exposure)
10
As can be inferred from the above, there is a margin, a safety factor
(reduction factor) between the exposure level measured by this tester and the threshold values in the basic restrictions. Thus an exposure
11 level of 100% measured by this tester does not mean to affect the human body.
13
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114
Appendix 2 Coupling Factor in the ICNIRP Guidelines
Appendix 2 Coupling Factor in the ICNIRP
Guidelines
The degree of coupling (coupling factor) of the human body and a magnetic field changes the effect on the human body.
Coupling factor a is 0 d a d
1, where 0 is no coupling and 1 is maximum coupling. The greater the coupling factor the greater the effect the magnetic field has on the human body. (See figure below.)
Coupling factor a
Degree of coupling between human body and electro-magnetic field a = 0 no coupling a = 1 maximum coupling
Basic restrictions ˁ
Current density ˁ
SAR ˁ Power density
0 < a < 1
Magnetic field
(electric field)
Small coupling factor a = 0.2
Same effect on the human body
Five times larger magnetic field
Maximum coupling factor a=1
Magnetic field
(electric field)
The ICNIRP reference level represents a coupling factor of 1.
Consequently, although the tester tells us the ratio of a measurement to the ICNIRP reference level, it cannot measure the coupling factor and therefore does not indicate the direct effect on the human body.
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