Electromagnetic Field
electric and magnetic field interaction.
See Also: EMF, RF Field Strength Meters
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Vehicle Electromagnetic Field Test System
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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 Analyzer System
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A compact size electric antenna (The electric field analyzer system) that hasthe spectrum analyzer function. This instrument is most suitable to the radiation noise measurement ofelectric field from the system, such as the wireless power supply, that uses the frequency less than 30 MHz.
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Electromagnetic Field Testers, EMF Testers
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Lutron Electronic Enterprise Co., Ltd.
Electromagnetic Field Testers, EMF Testers by Lutron
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3-AXIS DIGITAL AC GAUSSMETER: 1-200 kHz
IDR-200
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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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EMF/ RF Field Strength Meter
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Designed for measuring and monitoring Radio–Frequency electromagnetic field strength.
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RF Safety Monitoring
fieldSENSE 2.0
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LBA's FieldSense 2.0 personal RF safety monitors are an effective and economical means to monitor the strength of electromagnetic (RF) fields from wireless cell phone towers, microwave ovens, television stations, and other common workplace RF sources between 50 and 6000 MHz, E-field and H-field (sensed as a plane wave). The Personal RF Monitor is essential RF safety equipment in complying with FCC, OSHA, Canadian and other workplace rf safety requirements.
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Field Strength Meters
FIM-22 And FIM-41
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The Models FIM-22 and FIM-41 are portable field strength meters designed to provide precise, direct measurements of electro-magnetic fields in the 200 kHz to 5.0 MHz spectrum. These units include a receiver, integral shielded loop antenna, precision attenuator, internal calibration source, and battery power supply. With calibration accuracy traceable to the National Institute of Standards and Technology, the FIM-22 and FIM-41 meet the most exacting requirements of government and industry. Their hinged covers, on the rugged drawn aluminum cases, contain a loop antenna. Opening the cover to a vertical position connects the antenna terminals to the receiver via maintenance-free gold-plated contacts. An interlock switch prevents inadvertent battery discharge when the cover is closed.
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Compact Accelerometer (Shock Meter)
AP2019
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Can be used as shock sensors in equipment diagnostic systems; Combination of high axial sensibility, intrinsic frequency and shock resistance; Low sensitivity to electromagnetic fields; Low intrinsic noise level.
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Gauss Meters
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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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Antenna, Loop Sensor
EM-6873 | 20 Hz – 100 KHz
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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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Magnetic Radiation (Gauss Meter)
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A gauss meter can detect either static (DC) permanent (rare-earth) magnetic or dynamic (AC) electromagnetic fields (EMFs), or both.
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Vehicle Electromagnetic Field Exposure Test System
SEM-400
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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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Specific Absorption Rate (SAR) Testing
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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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Surge/wave Simulators
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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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EMC Testing
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Does your product send or receive electromagnetic data? This can be analyzed using various tests. We investigate the interference immunity and emitted interference of simple electrical devices and complex machinery. Our EMC measurements and tests conducted in accordance with standards recognize all activity in the electromagnetic field and ascertain how immune to interference a piece of equipment is. We will also offer guidance on optimizing the product in terms of its EMC properties during the development phase.
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Magnetic Resonance Instruments
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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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RFID Software
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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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SAFEONE® Pro Personal RF Safety Monitor
Pro SI-1100XT
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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.
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EMR Testing
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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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RF Test
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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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Electro Magnetic Meter
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This meter is used to indicate radiated electromagnetic fields. Wherever there is a voltageor a current, electric (E) and magnetic (H) fields arise.
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Area Monitoring: Measuring Stations And Measuring Sytems
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In everyday life, we are surrounded by electromagnetic fields (EMF) wherever we are. They come from power lines, electricity cables, cellular radio and cordless phones and many other things, too. To protect the general public, the limit values are checked regularly and sometimes monitored continuously. Narda offers various measuring stations and systems for this purpose.
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EMI/EMC Compliance Consulting
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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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Non-Contact Voltage Detector
VOLTCHEK
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The VOLTCHEK is a variable non-contact voltage detector, A proximity device which detects the presence of an alternating electric or electromagnetic field. It is used by industry professionals for live or dead voltage determination of outdoor overhead or underground at URD test points. Firstly as a proximity device to determine live or dead situations and then as a touch device to verify the source has physically reached the zero AC field. This is the only equipment capable of testing all voltage from AC 415V to 765kV from a distance, beyond arcing zone.
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Modeling Capacitors, Inductors, Insulators, Coils, Motors, and Sensors
AC/DC Module
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The AC/DC Module is used for simulating electric, magnetic, and electromagnetic fields in static and low-frequency applications. Typical applications include capacitors, inductors, insulators, coils, motors, actuators, and sensors, with dedicated tools for extracting parameters such as resistance, capacitance, inductance, impedance, force, and torque.
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Personal Safety EMF Measuring Equipment
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EME (electromagnetic energy) RF Exposimeter / Personal monitors, worn on the person. The devices monitor the electromagnetic fields and warn of excessive field strengths, e.g. when working on industrial equipment, broadcasting or mobile phone stations, radar installations or other sources of electromagnetic radiation.
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Air Core Inductors
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Osborne designs our Air Core Inductors to realize their advantage of high linearity. We also work with our clients to identify and mitigate any potential disturbances that could result from electromagnetic fields created. The air core design approach is known to create strong electromagneticfields. Osborne develops electromagnetic circuit models, if necessary, to ensure that our clients build effective and reliable circuits.
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Consulting Services
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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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Human Exposure Measurements to Luminaries
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Through different ways of coupling between luminaries and humans, a level of exposure of a person to electromagnetic fields can be derived. One part of the exposure is based on capacitive coupling between lighting equipment and person. This creates induced internal electric field that must be evaluated using an EMI receiver and a Van Der Hoofden test head.
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Inductive Sensors
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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.
