EMF
electric and magnetic field interaction.
See Also: Electromagnetic Field, EMF Meters, Inductance
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RF Safety Monitoring
MVG EME Guard Plus
The EME Guard Plus is designed to record EMF exposure near antennas while continuously monitoring potential over-exposure. Lighter than the previous model, the EME Gaurd Plus makes it easier for workers to wear on the job. The longer battery life and extended memory capacity enable more measurements to be recorded.
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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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Single AXIS DIGITAL AC GAUSSMETER
IDR-109/IDR-119
Integrity Design and Reseach Corp.
Typical Applications include checking the 50 and 60 Hz electric and magnetic fields (EMF) produced by equipments such as transmission lines, computers, electric blankets, electric appliances, televisions, etc.. Magnetic fields are invisible radiations, the best method to detect them is by using one of the accurate gauss meter from Integrity Design & Research corp.
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Spring/Non-Spring-Loaded Thermocouple
8PT25
The AMETEK 8PT25 Spring/Non-Spring-Loaded Thermocouples for Frame 6, 7 and 9 applications have been designed, fully tested and qualified to meet OEM specifications. Power Instruments’ expertise in solving creep, stress rupture, corrosion, EMF drift and other problems affecting sensor performance has resulted in a robust line of single and dual element thermocouple designs. This thermocouple is immersed directly into the turbine fluid to monitor temperature while in operation.
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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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RefRad Comb Generators
RadRad is a battery-operated comb generator as well as a field source. It is a valuable tool for engineers ensuring the quality of radiated and conducted EMC and EMF measurements.
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LXI Low Thermal EMF Matrix 1-pole 42x33
60-510-002
The 60-510 is a high density 1-pole matrix module controlled via LXI. It has excellent thermal stability and substantially reduced thermal EMF figures when compared to a conventional switching matrix. Typical applications include signal routing in ATE, selecting thermocouple inputs, switching amplifier gain circuits and high accuracy DC micro-volt measurements. Ruthenium reed switches are used because of their good low level switching capability. They also have a very long life with excellent contact resistance stability, minimal wetting current and low thermal offset.
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PXI 23 Channel Low Thermal MUX
40-620-022
Pickering 40-620 Multiplexer modules are similar to other Pickering Multiplexer cards except thermal EMF is substantially reduced to <1.5V with 250nV thermal stability. Typical applications include signal routing in ATE, selecting thermocouple inputs, switching amplifier gain circuits and high accuracy DC microvolt measurements.
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Motor Starting & Control Resistors
Motor Starting Resistors are used to reduce the voltage at the motor terminals and also decrease the starting current. Motor Starting Resistors are necessary because the self resistance of a motor armature is very low. When the voltage is first applied, excessive current will flow. For limiting this current, since there will be no resisting back electromotive force (emf),some series resistance can be added to the armature windings.
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Milliohm Meters
Chroma 16502
Chroma Systems Solutions, Inc.
With a basic accuracy of 0.05%, Chroma 16502 offers a 0.001mΩ ~1.9999MΩ wide measurement range. It provides measurement range with 4 1/2 digits resolution. The fast measurement time is 65 ms. It suits component evaluation on production line. Pulsed test current output mode is used to reduce thermal EMFs affection on milliohm measurement. DC test current output mode is used to fasten measurement speed for inductive DUT. Dry-circuit test current output mode is used to measure such contact resistances where the maximum open-circuit voltage must be limited to 20mV.
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Area Monitoring: Measuring Stations And Measuring Sytems
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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Magnetic Radiation (Gauss Meter)
A gauss meter can detect either static (DC) permanent (rare-earth) magnetic or dynamic (AC) electromagnetic fields (EMFs), or both.
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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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Calibration
RF Test Equipment
We calibrate following types of RF test equipment:EMF test systems (frequency selective)EMF test systems (broadband)Field strength transfer standards (e.g. RefRad)Line Impedance Stabilisation Network (LISN)Cable, attenuator, couplerAntennaField Probe
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Power Metering Precision Shunt Resistore
PMS
These components have E-Beam welded manganese-copper alloy elements giving high strength, stability and reliability. Low thermal EMF and TCR. Small size and minimal power loss. Minimal heat generation and surface temperature due to small total resistance. Proprietary processing technique allows very low resistance values. Ideally suited for KWh meters and sampling sensor shunts. These units are also suitable for custom design.
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Milliohm Meter
16502
Chroma Systems Solutions, Inc.
Basic accuracy : 0.05%Pulsed test current output mode is used to reduce thermal EMFs affection on milliohm measurementDC test current output mode is used to fasten measurement speed for inductive DUTDry-circuit test current output mode (limited Max. 20mV) is used to measure such contact resistances where the maximum open-circuit voltage must be limited to 50mVTemperature correction (TC function) regardless of material or temperatureUseful temperature conversion function for motor/ coil evaluation4 channels R scan with balance check function for fan motor (combined with A165017 option)0.001mΩ~1.9999MΩ wide measurement range with 4½ digits resolutionStandard RS-232 interfaceOptional GPIB & Handler interfaceBin-sorting functionComparator and pass/fail alarming beeper functionLarge LCD display (240 x 64 dot-matrix)Friendly user interface
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Automated Resistance Standard
SmartResistor
The SmartResistor combines, into one transportable device, all the items needed to maintain resistance: a set of standard resistors, a controlled temperature bath, a low thermal emf scanner, and measurement data.
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Precision Thermometer
F252
ASL's F252 provides high accuracy, dual channel temperature measurement with Platinum Resistance Thermometers - PRTs - and uses AC bridge technology as developed by ASL for Standards Laboratories throughout the world. Model F252 requires no regular recalibration, the AC circuit techniques eliminating thermal EMFs and drift, while providing excellent long term stability. Front panel data entry allows you to enter probe calibration data into the F252's memory, so that thermometer resistance can be accurately converted to temperature in C, F or K. This can be password protected to prohibit unauthorised or accidental data entry.
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EMF Detector
ElectroSensor™
This EMF detector is an unparalleled value that offers fast, reliable, and user-friendly measurements of electromagnetic pollution. Since man-made alternating current (AC) is different from naturally occurring EMF, some sources say that even extended exposure of as low as 2 milliGauss may be harmful. Fortunately, once EMF sources are identified with your ElectroSensor you can moderate your distance and exposure.
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Exhaust Gas and Wheel Space Thermocouple
EGT
AMETEK Exhaust Gas (EGT) and Wheel Space Frame Turbine Thermocouples meet the specific operational and performance requirements for REPLACEMENT and RETROFIT Frame gas turbine applications. AMETEK's expertise in solving creep, stress, rupture, corrosion, EMF drift, and other problems affecting sensor performance has resulted in a robust line of single and dual element thermocouple designs. Typical applications include wheel space and exhaust gas temperature monitoring.
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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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EMF/ RF Field Strength Meter
Designed for measuring and monitoring Radio–Frequency electromagnetic field strength.
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Metal Foil Llow Resistance Chip Resistor
MFR (Metal foil)
*Low Resistance / TCR / EMF 9only FOR MnCu) / Inductance*Excellent long term stability*RoHS compliant and halogen free.*Lead free.* High precision current sensing and voltage division.
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Conductivity Type Tester
HS-HCTT
It is strictly designed according to the requirements of the hot-probe thermal EMF conductivity type test in standard ASTM F42: Standard Test Methods for Conductivity Type of Extrinsic Semiconductor Materials. A temperature controlling heating element is installed inside the hot probe so that the hot probe is heated automatically and its temperature is maintained in the range 40-60℃.
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Electromagnetic Flowmeters
Measuring for process management, revenue collection, liquid transportation and energy conservation. Whatever the application, ABB´s intelligent design, state-of-the-art technology and advanced features work harder and smarter to make your operations more efficient and cost effective.ABB offers the most comprehensive range of EMF product lines tailored to your needs.
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Temperature Measurement click board
Thermo J click
Thermo J click is a temperature measurement click board™, which uses a thermocouple type-J probe, connected to a PPC-SMP-J onboard connector. The active part of the Thermo J click is MCP9600 by Microchip - a thermocouple EMF to temperature converter, with 1.5°C of maximum accuracy. The onboard PCC-SMP-J connector ensures the secure connection and accurate readings for the connected thermocouple.
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Selective EMF Measuring Equipment
Selective measuring equipment for electromagnetic fields (EMF) for demonstrating safety and environmental compatibility. The devices analyze individual frequency ranges and field exposure levels accurately down to a single communications channel. They also calculate the sum and compare levels with current limit values.
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Hand-held 3-Phase Meter Tester
3 Series
Powermetrix continues its industry leadership with the introduction of Powermetrix Remote Manager (PRM) for the PowerMaster® 3 Series. Powermetrix Remote Manager enables wireless control of essential and various metering site accuracy tests contained within PowerMaster® 3 Series from any Windows compliant system up to 100 feet in any environment, including high EMF environments! Customer load Meter Testing, CT/PT ratio testing, CT/PT burden measurement, meter register/demand testing, and wiring verification are all easily performed with this extremely portable, hand-held 3-phase power analyzer. In addition, with the new Model 335, phantom load meter testing and CT burden added testing are available to complete your field-testing needs.
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Precision Micro Ohmmeter
BS407
High basic accuracy of 0.1%Wide range of 1 µΩ to 20 kΩCurrent reversal switch for detecting thermal EMF effectsCurrent diversion switch for easy zeroingFour terminal measurement using Kelvin clip leads (supplied)Battery operation with built-in charger20mV clamp for "dry circuit" testing
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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.
