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Electromagnetic Field
electric and magnetic field interaction.
See Also: EMF, RF Field Strength Meters
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Vehicle Electromagnetic Field Test System
Beijing KeHuan Century EMC Technology Co,.LTD
Vehicles are the daily means of transportation for our public, and the electromagnetic pollution in vehicles has received more and more attention from the public. The newly revised mandatory standard GB27630-201X "Air Quality Evaluation Standard for Passenger Cars" intends to require the electromagnetic field in the vehicle as one of the indicators. The measurement method measures the magnetic field strength in the vehicle. Within the frequency range of 10Hz-400kHz, the electromagnetic field measurement results should meet the requirements of the public limit of electromagnetic exposure in GB8702-2014.
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Electromagnetic Field Testers, EMF Testers
Lutron Electronic Enterprise Co., Ltd.
Electromagnetic Field Testers, EMF Testers by Lutron
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3D/2.5D Time-Domain Electromagnetic Field Solver Software
EM-CORE ®
3D/2.5D Time-Domain Electromagnetic Field Solver Software for Planar-Circuit and Antenna Simulation. 3D & 2D Radiation Patterns Modeling, Spiral Inductors Modeling, 3D EM Modeling of Filters, Intuitive Geometry Build, and more!
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Vehicle Electromagnetic Field Exposure Test System
SEM-400
Beijing KeHuan Century EMC Technology Co,.LTD
Vehicles are our daily public transportation. Electromagnetic pollution in vehicles has attracted more and more public attention. The newly revised compulsory standard GB27630-201X "Passenger Car Air Quality Evaluation Standard" intends to require the electromagnetic field in the car as one of the indicators, according to GB/T37130-2018 "Measurement method of vehicle electromagnetic field relative to human exposure" The measurement method is to measure the intensity of the magnetic field in the car. In the frequency range of 10Hz-400kHz, the electromagnetic field measurement result should meet the public limit requirements of GB8702-2014 for electromagnetic exposure.
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Signal Acquisition and Filtering Technology
SNAPTrack®
Built on a proven design, and with Pathfinder SAF Technology™ at its core, the SnapTRACK® offers RYCOM’s most advanced signal acquisition and filtering technology. The SnapTRACK® cable & pipe locator offers utility locators FrequencyFlex™ allowing users to adapt the system to their specific needs. Multiple active frequencies allow the user to accurately locate with a minimum of interference while maintaining the ability continue locating past faults and around conduit bends. Passive frequencies identify "live" and charged lines by their naturally occurring electromagnetic fields. The SnapTRACK® offers multiple passive frequencies -- 50Hz, 60Hz, Radio Frequency, Cathodic Protection Rectifier & CATV -- allowing line locating without the use of a transmitter.
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RFID Tags
RFID tags bring the future of technology to today. Radio-frequency Identification(RFID) tags can be placed on almost any piece of clothing, cash, animals and even humans. Tags use electromagnetic fields to identify and track the desired object. Active tags are powered by a battery located inside the tag, and may operate over hundreds of meters away from the RFID reader. RFID tags have been expanding ever since their inception – they became especially popular when used in toll readers and assembly lines to track the product’s progress throughout the assembly line.
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EMF Measurements/EM Measurements/Electromagnetic Radiation
Holland Shielding Systems B.V.
Electromagnetic fields cause interference in electronic devices and may affect the health of people close to where the fields are generated. It is important to recognize this at an early stage in a construction process, for instance at a future construction location or while construction is already underway, so that budgets are not exceeded. By means of field-strength measurements one can chart the existing electromagnetic fields and radiation emitted by GSM, UMTS antennas and transformer spaces, to mention a few examples. These measurements can help determine the best location in the new building for rooms where sensitive measurements are to take place, e.g. in hospitals or nano laboratories. And last but not least, field-strength measurements can detect sources of interference and can be part of a scheduled check of existing screened spaces and Faraday cages.
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Exposure Systems
sX series
Exposure systems are equipment or systems designed for the assessment of, for example, health risk, efficacy of therapies or mechanisms associated with exposure to electromagnetic fields. The systems designed by the IT''IS Foundation are the sX series, where sX stands for "System for eXposure" with options for cells (c), vertebrates (v), and humans (h).
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RF Test
RF is short for radio frequency. RF is any frequency within the electromagnetic spectrum associated with radio wave propagation. When an RF current is supplied to an antenna, an electromagnetic field is created that then is able to propagate through space. Many wireless technologies are based on RF field propagation. These frequencies make up part of the electromagnetic radiation spectrum.
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GSM RF Interference Test System
Guangzhou Jumho Electric Co., Ltd.
Cell phones and other wireless devices radiate powerful electromagnetic fields that can cause interference and noise in microphone signals. The interference and noise is called RF interference, which is an unwanted “signal” that occurs at the same time and frequency as a data signal. The RF interference disrupts the flow of data and degrades quality-of-service. Jumho Electric provides a cost-effective RF interference test system for GSM interference level measurement of wireless microphone.
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EMF Detector / EMF Tester Gauss Meter
EMF 701
A cost effective, handheld meter provides the user with quick,reliable and easy way to measure electromagnetic field (EMF) radiation levels generated by power lines, cables, computer monitors,TV sets, Video equipment and many other similar devices.
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EMF/ RF Field Strength Meter
Designed for measuring and monitoring Radio–Frequency electromagnetic field strength.
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Consulting Services
Standards and Regulatory Management. Standards Development. Regulatory (FCC, FDA, Access Board). Areas of Technical Excellence: Electromagnetic Compatibility, Disability Access, Wireless Requirements, RF Safety (EMF & SAR), Product Compliance, Quality & Conformity Systems, Measurement of Electromagnetic Fields. Training - We offer a variety of course in various areas of compliance and technology. We also provide custom training, tailored to your needs, in our areas of expertise.
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Magnetic Resonance Instruments
Integrated Dynamics Engineering
MRI systems represent a significant investment. As magnetic resonance images can be distorted by electromagnetic fields, frequently the location is isolated by passive shielding to somewhat insulate the detectors from image distorting EMI. But for a fraction of the cost of the machine an active EMI compensation can fully protect the image from damaging fields generated by other electrical equipment, passing traffic, elevators or other nearby equipment.
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EMR Testing
It is widely accepted that exposure of the human body to high levels of Electromagnetic Radiation (EMR), Electromagnetic Energy (EME) or Electromagnetic Fields (EMF) may lead to adverse health effects. To ensure the protection of personnel in the workplace and to protect members of the general public, it is essential that the EMR levels comply with relevant exposure limits set by regulators in each country.
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EMF Exposure Test
sXcTEM835
Tests radiofrequency electromagnetic field exposures from mobile communication devices operating in the 900 MHz region (additional frequencies upon request). The setup is based on two Crawford TEM cells that are blindly excited by a fully computer-controlled signal unit.
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RFID Software
Radio Frequency Identification technology, commonly referred to as RFID, uses electromagnetic fields for the purposes of identifying and tracking objects. More recently, the technology has moved into mainstream applications that speed up the handling of manufactured goods and materials by attaching RFID tags to them. RFID technology has been around since the 1970s but its high cost and limited practical applications have discouraged its use up until recently.
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Inductive Sensors
Inductive Proximity Switches, self contained, depend on the output of an oscillator for their operation. The oscillator resonant circuit uses an open core coil to produce a concentrated high frequency electromagnetic (RF) field, which emerges from the active surface of the sensor. If a metal target (or other electrically conductive material) enters this field, eddy currents will be induced in it, causing the resonating oscillator to be damped.
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Horn Antennas
Horn antennas can be used for emissions and immunity testing. These antennas are constructed using light weight aluminum with a corrosion resistant conductive coating for indoor or outdoor use. Each antenna is individually calibrated. The calibration data and certificate will be shipped with each antenna.The high gain reduces input power requirements to generate high electromagnetic field levels for immunity testing. High gain also increases antenna sensitivity to low level signals.
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Predicting Microwave and RF Designs Virtually
RF Module
The RF Module is used by designers of RF and microwave devices to design antennas, waveguides, filters, circuits, cavities, and metamaterials. By quickly and accurately simulating electromagnetic wave propagation and resonant behavior, engineers are able to compute electromagnetic field distributions, transmission, reflection, impedance, Q-factors, S-parameters, and power dissipation. Simulation offers you the benefits of lower cost combined with the ability to evaluate and predict physical effects that are not directly measurable in experiments.
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Specific Absorption Rate (SAR) Testing
SAR limits are there to protect all of us from wireless devices that exceed the transmit Radio Frequency (RF) threshold. SAR stands for Specific Absorption Rate. It's a measure of the rate at which energy is absorbed by your body when you are exposed to an RF electromagnetic field. In some countries, the SAR test result figure has to be displayed at the point of sale. To have a presence in these markets, your products must meet strict SAR regulations.
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Electromagnetic Field Tester
The EMF tester is designed to provide user a quick, reliable and easy way tomeasure electromagnetic field radiation levels around power lines, home appliancesand industrial devices.
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Gauss Meters
A gauss meter displays electromagnetic wave measurements in Gauss (G), milliGauss (mG), milliTesla (mT) or microTesla (µT) units. A gauss meter can detect either static (DC) permanent (rare-earth) magnetic or dynamic (AC) electromagnetic fields (EMFs), or both. Thus, it is important to review the specifications of a gauss meter prior to purchase to ensure suitability for the intended application.Neodymium (NdFeB) permanent magnets are among the world's strongest and most widely used magnets. When testing magnets made of neodymium or other rare-earth elements, a gaussmeter or magnetometer capable of measuring DC magnetic fields is required. However, most electromagnetic fields encountered are generated by AC currents. Examples include electrical power lines, transformers and wiring for overhead lighting, solar panels and other electrical devices and equipment. Electromagnetic fields from electrical installations are believed to cause feelings of nervousness, anxiety and paranoia in EMF-sensitive human beings.Most gaussmeters offered by PCE Instruments can be calibrated and certified according to DIN ISO 9000 standards for an additional fee. Replacement gaussmeter probes and optional accessories are available for most gaussmeter models.
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Inductive Sensors
In general, inductive proximity switches consist of four basic elements: a coil, an oscillator, a threshold switch and an output stage with short-circuit protection.The oscillator generates a high frequency, electromagnetic alternating field which is emitted from the active face of the coil.Eddy currents are induced in a metal object that enters this field. These eddy currents draw energy from both the electromagnetic field and from the oscillator which is consequently attenuated.The more energy taken the closer the metal object moves towards the active face. The threshold switch switches on the output stage at a defined attenuation value.In proximity switches with a DC voltage supply, this switch is designed as an NPN transistor which switches the connected load to the negative pole or as a PNP transistor which switches the load to the positive pole. The output stage is a thyristor or a triac in AC voltage switches.
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Antenna, Loop Sensor
EM-6873 | 20 Hz – 100 KHz
The EM-6873 Loop Sensor Antenna uses passive circuits to transform magnetic field components between 20 Hz – 100 kHz to an equivalent open circuit two-terminal voltage on the receiving instrument. Use of the conversion Factor Chart, supplied with each antenna, will yield the strength of the magnetic induction field referenced to a uniform field. The loop is electrostatically shielded and therefore is sensitive only to the magnetic component (B-field) of the electromagnetic fields.
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Current Caliper
KH23101
Beijing KeHuan Century EMC Technology Co,.LTD
The KH23101 current caliper is a toroidal transformer used to measure EMI current. When measuring, the caliper does not directly touch the electrical conductor or the cable under test. The conductor passing through the caliper window is used as the single-turn primary wire of the transformer, and the secondary is designed to be multi-turn. Use with 50 Ω receiving system (such as EMI electromagnetic interference field strength meter or spectrum analyzer). In order to facilitate installation and rapid measurement of EMI current, it is designed as a caliper that can be opened.
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EMI/EMC Compliance Consulting
EMI Devices offers a broad range of consulting services in the field Electromagnetic Compatibility. Our extensive knowledge of consumer electronics and worldwide regulatory requirements allow us to design Electromagnetic Compatibility Regulatory Compliances from the start.
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3-AXIS DIGITAL AC GAUSSMETER: 1-200 kHz
IDR-200
Integrity Design and Reseach Corp.
Typical Applications include checking the frequencies and magnetic fields (BW: 1 kHz -200 kHz) produced by equipments such as computer monitors, television sets, video display terminals, induction heaters, industrial, Radar, scientific/medical equipment, walk-through/hand-held detectors and ground wave energy network; etc. For more information about VLF magnetic fields and the VLF gaussmeter , see the paper titled "Very-low-frequency electromagnetic field detector with data acquisition," IEEE Trans. Instrum. Meas.,vol. 58, no. 1, pp. 129-140, Dec. 2008. by S. Hanna.
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Surge/wave Simulators
Suzhou 3ctest Electronic Co.,Ltd.
Surge pulses occur due to direct or indirect lighting strokes to an external circuit. This leads to current or electromagnetic fields causing high voltage or current transients. Another source for surge pulsed is switching transients originating from switching disturbances and system faults.
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SAFEONE® Pro Personal RF Safety Monitor
Pro SI-1100XT
SafeOne® Pro SI-1100XT is an effective and economical means to monitor the strength of electromagnetic (RF) fields from mobile phone towers, microwave ovens, radio and television installations, high frequency welders, and other common workplace RF sources between 10 and 18,000 MHz. The Personal RF Monitor is an important tool in complying with FCC, OSHA, and other safe workplace requirements.
