What are EMF Meters and Antennas?
An EMF meter is an instrument that is used with an electromagnetic (EM) sensor (antenna/probe) for measuring EM fields in the environment surrounding electronic devices and electric installations. EMF meter and antenna systems are available to measure electric field (V/m), magnetic field (µA/m to A/m), and electric/magnetic field strength. These systems help manage the radiation power from various equipment in the surroundings to ensure the government-specified limits are met.
EMF meter generally consists of amplifiers, comparators, ADC, a micro-chip processor and is used with an EMF antenna/probe (acts as the EM sensor) to perform EMF measurements. An EMF antenna/probe comprises a sensor (usually an isotropic antenna), a preamplifier, a transmission line, and a connector. Some EMF meters may use an inbuilt sensor (coil as an antenna) for measurement.
These systems are available in single-axis and tri-axis categories. The single-axis EMF uses an EM sensor that can measure one dimension of the EMF at a time. Thus, to obtain a full measurement, a single-axis meter needs to be tilted and turned on all three axes. A tri-axis EMF meter uses tri-axis measurement probe/antenna; thus, it measures all three axes (X, Y, Z) simultaneously; hence EMF measurement can be completed faster.
EMF meter and antenna systems are ideal for measuring radiation from power lines, electrical appliances, computers, high voltage cables, industrial devices, and base stations. They are also used in locating RF hotspots, wireless networks (Wi-Fi) RF detection, microwave leakage detection, and EMC test applications.
everything RF lists EMF Meters and Antennas from the leading manufacturers. Use the parametric search tools to narrow down products based on your requirement. Once you find parts that meet your specification, download the data sheet, compare products and request quotations. Inquiries sent via everything RF are directed to the manufacturers who get back to you with a quote or information.
