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| MAGNETIC FIELD HiTESTER Model 3470 Now Available < What's New |
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Fully Meeting the Testing Needs to Assure a Safer Environment
Against Exposure to Magnetic Fields |
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| HIOKI E.E. CORPORATION has developed the Magnetic Field HiTester Model 3470 to measure magnetic field strength and flux density of environmental magnetic fields and home appliances. Available in June 2006, this model is HIOKI's debut into the market for magnetic field measurement instruments. This advanced instrument measures a broad range of electromagnetic waves and magnetic field components within electromagnetic fields. |
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| What is home appliance compliance testing? |
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| International standard IEC 62233 and European standard EN 50366 define specific measurement methods for the magnetic fields emitted from about seventy types of home appliances. In particular, EN 50366 defines the exposure level measurement tests necessary to determine compliance with the established standard for CE Marking of products, which is required for home appliances to be imported to Europe. The Magnetic Field HiTester Model 3470 is able to perform the tests required by EN 50366. |
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| What is magnetic field environment measurement? |
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The influence of a magnetic field on the human body is frequency dependent. Because the the Magnetic Field HiTESTER Model 3470 incorporates frequency weighted measurement capabilities, the exposure level of the human body can be displayed as a percentage of the guideline levels developed by the ICNIRP in 1998 (Note1) without explicit operator concern for frequency.
Therefore, in addition to compliance testing by home appliance manufacturers, this instrument is useful for customer-service-related magnetic field measurements, such as for measuring residential indoor and outdoor magnetic field environments. |
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| Overview |
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The Magnetic Field HiTester Model 3470 is an instrument for measuring human exposure to magnetic fields in compliance evaluation tests as defined by international standard IEC 62233 and European standard EN 50366.
It measures rms flux density in T (Tesla) and G (Gauss) and field strength in A/m (amperes per meter) on three orthogonal axes and provides the composite value for the three axes, displayable as a percentage relative to the reference guideline defined by the international standards. |
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| Advantages |
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- Measures exposure levels for compliance evaluation testing: Model 3470 measures the flux density of human exposure, as well as the ambient flux density in the general environment. Performs time domain evaluation (exposure level evaluation) as defined by IEC 62233 and EN 50366.
- Choice of two magnetic field sensors: to suit various measurement objectives, two magnetic field sensors are available, one with 100 cm2 cross-sectional area, and another with 3 cm2 area. The 100 cm2 Model 3471 is a general-purpose sensor designed for IEC and EN standards testing, and the cm2 Model 3472 is ideal for determining the spatial distribution of magnetic fields.
- Memory function stores measurement data: up to 99 measurements can be stored.
- PC application program: three simple and convenient functions are provided via USB connection: rms logger, batch acquisition and remote setup.
- 10 Hz to 400 kHz measurement frequency range: broad coverage of commercial mains and IH (induction heating) frequencies.
- Plenty of output functions: three axis and composite rms waveform output to a recorder or oscilloscope. The three axes and composite rms values (rms logger) can be viewed using the PC application.
- Three selectable measurement units: flux density in T (Tesla) and G (Gauss), and field strength in A/m (amperes per meter).
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| Primary Features |
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- Compliance testing of home appliances
Model 3470 includes built-in filters (evaluation filters) that are inversely proportional to the general public and occupational magnetic field exposure levels specified by ICNIRP 1998, so the percentages of the rms values of the three axes' discrete and composite measurements can be obtained easily.
This feature makes possible time domain evaluation (exposure level measurements) as specified in IEC 62233 and EN 50366, and makes the Model 3470 ideal for home appliance compliance testing
- For magnetic-field-related customer services
Because the exposure level measurement mode is able to ascertain the percentage of the ICNIRP 1998 magnetic field reference levels defined for human exposure without requiring explicit concern for frequency, in addition to compliance testing, Model 3470 is ideally suited to customer-service-related magnetic field measurements.* |
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* In the exposure level measurement mode, exposure is indicated as a percentage of the magnetic field reference levels defined by ICNIRP 1998 for general public and occupational exposure levels. However, these levels do not indicate a particular degree of hazard. Determination of the degree of hazard also requires consideration of reference level, composite coefficient, safety coefficient and threshold definitions
Time domain evaluation: methods such as FFT are provided to evaluate frequency domains. Because the influence of
magnetic fields on the human body is frequency dependent, frequency-domain evaluation is necessary. By selecting a filter
based on ICNIRP 1998 in the Model 3470, measurements are internally weighted according to frequency, making time
domain evaluation possible.
ICNIRP 1998: This guideline defines reference levels of magnetic and electric fields for the general public and occupational exposure (see Note 1 above)
Note 1. This guideline was developed by the ICNIRP (International Commission on Non-Ionizing Radiation Protection), which is officially related to the WHO (World Health Organization), ILO (International Labor Organization), the EC (European Commission) and other organizations. It identifies standard reference exposure levels of magnetic and electromagnetic fields, although these exposure levels do not stipulate the degree of hazard, which requires consideration of additional factors. |
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