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Electromagnetic Field
electric and magnetic field interaction.
See Also: EMF, RF Field Strength Meters
- LBA Group, Inc
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RF Safety Monitoring
fieldSENSE 2.0
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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Electromagnetic Field Detector
LCD display3 Digits LCD With 1999 Counts Low Battery Display On LCD Overload"OL" Display On LCD Accuracy(3%+3dgt) at 50Hz./60Hz. Frequency Response30Hz~400Hz Sampling RateApprox. 2.5 times/sec. Max Hold / Data Hold Battery9V x 1 Specifications0.1~200mG (milli Gause)
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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
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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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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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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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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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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Medium Wave Field Strength Meter, 520 kHz to 5.1 MHz
PI 4100
A third generation of precision survery instrumentation for direct measurement of the electromagnetic field strength.
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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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Digital Thickness Gauges Ultrasonic Coating Thickness Meter
HC-220
Shenzhen Chuangxin Instruments Co., Ltd.
HC series of coating thickness gauge is a portable thickness gauge with eddy current thickness method and electromagnetic thickness method. It can be used to quickly and accurately measure the thickness of coating or cladding material withoutdamaging it. As an essential instrument for professional material protection, this coating thickness gauge is widely used in manufacturing industry, metal processing industry, chemical industry and commodities inspection etc. ,both in the laboratory and in the engineering field. It can measure the thickness ofnonmagnetic layer on magnetic metal substrate condition (such as steel, iron, alloy and hard magnetic steel, etc.) and the thickness of conductive layer on nonmagnetic metal substrate condition (such as rubber, paint, plastic, anodic oxidation film, etc.).
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Electromagnetic Field Analyzer System
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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Helmholtz Coils
Helmholtz coils is a candidate test apparatus for low frequency magnetic field susceptibility testing on military equipment and subsystems. Use of this coils reduce electromagnetic compatibility (EMC) qualification tests time, and subject the equipment under test (EUT) to a relatively uniform field.
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Vibration Sensors
SKF Condition Monitoring Center
Various machine operating conditions concerning temperature extremes, magnetic fields, vibration range, frequency range, electromagnetic compatibility (EMC) and electrostatic discharge (ESD) conditions and the required signal quality necessitate the need for a variety of sensors.
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Near Field Probes 30 MHz up to 3 GHz
RF2 set
The RF2 near field probe set consists of 4 passive near field probes for measurements in the development phase of the magnetic field in the range from 30 MHz to 3 GHz on electronic assemblies. The probe heads of the RF2 set allow the step by step localization of interference sources of the RF magnetic field on assemblies. From greater distances the electromagnetic interference can be detected by RF-R 400-1 and RF-R 50-1 probes. The RF-B 3-2 and RF-U 5-2 probes with their higher resolution can more precisely detect the interference sources. Field orientation and field distribution on an electronic assembly can be detected through a trained special use of the near field probe. The near field probes are small and handy. They have a sheath current attenuation and are electrically shielded. They can be connected to a spectrum analyzer or an oscilloscope with a 50 Ω input. They do not have an internal terminating resistance.
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Non-Contact Voltage Detector
VOLTCHEK
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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Cryogenic Probe Station
EMPX-HF
The Lake Shore EMPX-H2 probe station enhances standard probe station capabilities with the addition of a ±0.6 T horizontal field electromagnet. All standard C-V, I-V, microwave, and electro-optical probing, plus in-plane horizontal field electromagnetic measurements can be performed on this versatile station. Researchers can use it for testing magneto-transport parameters. The EMPX‑H2 is Lake Shore’s premier probe station for vector-dependent magneto-transport measurements.
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EMC Near Field Probes
TBPS01
The TBPS01 EMC near field probes H20, H10, H5 and E5 are magnetic field (H) and electric field (E) probes for radiated emissions EMC pre-compliance measurements. The probes are used in the near field of sources of electromagnetic radiation.
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Magnetic Flaw Detector
CJX-A
multifunctional magnetic flaw detector absorbed the advantages of similar products at home and abroad. With small size, light weight, easy operation, multifunction in one unit. The detector can equip A, D, O three types of probes to realize the functions of magnetic clamp detection, electromagnetic yoke detection, ring detection. It is the necessary detector to do flaw testing, quality control, safety check, life evaluation in the fields of petrol, chemicals, metallurgy, shipbuilding, aviation, railway etc..
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Magnetfield Testers
The magnetic field tester is suitable for rapid and precise testing of electro-magnetic switches and valves. Their tip lights up to indicate the presence of permanent, DC or AC magnetic fields. Thereby, they are so sensitive that very often it is not necessary to remove covers or cladding from machines and the function check can be carried out without any setting-up time or stopping the machine.
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Field Strength Meters
FIM-22 And FIM-41
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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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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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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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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Modeling Capacitors, Inductors, Insulators, Coils, Motors, and Sensors
AC/DC Module
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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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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Shielding Effectiveness/ Conductivity Test
EM-2107A | 30 MHz – 1.5 GHz
The EM-2107A is a standard test fixture for evaluation of the electromagnetic shielding effectiveness of planar material. The fixture is an enlarged section of coaxial transmission line and complies fully with the requirements of ASTM test method D4935-1. The measured data relates to the shielding effectiveness due to a plane wave (far field EM wave) from which near field values for magnetic and electric fields may be inferred. The EM-2107A is provided with a reference standard test specimen, a dynamic range specimen. Dynamic range of greater than 80dB is achievable, although the cables and other test system components usually establishes the limiting factors.
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Electromagnetic (EM) Speed Log System
AGILOG 2
Aeronautical & General Instruments Ltd.
AGILOG 2 is based on the well-established electromagnetic principle that a voltage is induced in a conductor by a moving magnetic field. By using the sea water as a conductor, an output is generated as the vessel progresses. Electromagnetic speed measurement is passive in operation and therefore particularly suitable for use in submarines and warships. The EM technology provides reliable and robust speed availability when compared to some alternative technologies.
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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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uTCA / Stand-alone LLRF
Our digital RF stabilization system is available in uTCA and stand-alone form-factors for best in-class LLRF solutions. Our fully digital RF systems are designed to offer accurate control of electromagnetic fields inside any accelerating cavity and play a key role in the longitudinal beam performance of any particle accelerator. Our solution is tailored to customer needs and takes full advantage of our previous expertise on PCIe-S LLRF equipment, now working with the most advanced crate technologies.
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Basic Heating Module
Microwave heating analysis including loads rotation and translation, frequency tuning, heat flow and material parameters modification as a function of dissipated power. QW-BHM (Basic Heating Module) for QuickWave 3D provides a novel regime of operating the FDTD solver: the possibility of simulating microwave heating problems.The software has been prepared to work in sophisticated regimes, modelling rotation and movement of the heated load(s) even along complicated trajectories, etc. Transfer of the heat generated by electromagnetic fields can be modelled with external or internal Heat Transfer Module or by coupling QuickWave 3D simulations to external computational fluid dynamics packages.
