At present, electromagnetic radiation involving various industries has become another major pollution after air pollution, water pollution and noise pollution. With the renewal of the technological revolution and new applications of different wavelength bands, the exposure levels of many frequencies of electromagnetic radiation have increased significantly. . Although different countries have different views on the health hazards caused by electromagnetic radiation, their harm to the public is recognized.

The World Health Organization (WHO) established the International Electromagnetic Emissions (EMF) program in 1996 to propose the effects of static electromagnetic fields in ultra-low frequency (ELF), intermediate frequency (IF) and radio frequency (RF) electromagnetic fields (0Hz-300GHz) on human health.

The public's exposure to electromagnetic fields was recommended in the Council of Europe Recommendation of July 12, 1999 (1999/519/EC). And in May 2003, the European Electrical Standards Committee (CENELEC) announced the new technical standard EN50366. This standard regulates the measurement and evaluation methods of electromagnetic fields generated by home appliances.

On April 29, 2004, the requirements of EN50366 were officially listed in OJEU, and this standard has become one of the LVD (Low Voltage Directive) certification items for household appliances and other products.

On December 1, 2008, the standard EN 50366 was updated to EN 62233:2008 and enforced.

EMF is different from EMC. EMF is to study the purpose of personal safety. It is to study the influence of electric field and magnetic field noise emitted by electronic products on the human body. EMC is mainly for the purpose of ensuring the normal operation of electronic products, in order to study the impact of noise emitted by electronic products on other electronic products, or from other electronic products. When exporting to Europe, home appliances generally meet three certification requirements: LVD+EMC+EMF+ROHS.

Induced electromotive force

EMF (ElectroMotive Force) is an abbreviation for induced electromotive force. EMF testers are commonly used in the field of motor drive and power electronics.

Our company's German NARDA ELT400 electromagnetic radiation analyzer is designed for low-frequency electromagnetic field measurement of home appliances and communication products according to the European EN50366-2004 standard. The weighting network conforming to ICNIRP OCC, ICNIRP CEN PUB and BGV B11 standards can be directly Perform magnetic field measurements (wide measurement range 320μT, 80mT), automatic magnetic field exposure assessment,

100cm2 height 3D magnetic field probe / 3D output / connectable spectrum equipment, frequency is 1Hz - 400KHz.

The ELT-400 is a new exposure level meter for measuring the magnetic field strength of workshops and public spaces. This instrument is primarily designed to protect the health and safety of professionals in the industrial, insurance and service industries. This instrument can easily and accurately measure any required level in the low and medium frequency range. It's as simple as using a sound level meter to evaluate noise in the workplace. The test reference standard can directly evaluate the magnetic field exposure, and can automatically perform exposure evaluation for various waveforms, eliminating the overestimation problem in the evaluation using FFT, ultra-wide frequency range (1 Hz to 400 kHz), super Wide measurement range (up to 80 mT, depending on model), isotropic 100 cm2 magnetic field probe (according to standard requirements), 3D output.