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This section provides an overview for electromagnetic field (emf) meters as well as their applications and principles. Also, please take a look at the list of 10 electromagnetic field (emf) meter manufacturers and their company rankings. Here are the top-ranked electromagnetic field (emf) meter companies as of July, 2025: 1.Chauvin Arnoux Metrix, 2.AlphaLab, Inc., 3.Wavecontrol.
Table of Contents
An Electromagnetic Field (EMF) Meter is an instrument used to measure the strength of electric fields.
It is mainly used to measure the strength of radio waves received by radios and televisions, as well as to measure radio waves emitted by electronic devices. In recent years, there has been a significant increase in the us of electronic devices that emit radio waves.
The risk of radio interference among electronic devices and the potential impact of radio waves on the human body are both on the rise. As such, there is a great need for Electromagnetic Field (EMF) Meters that can accurately measure the electric field strength.
The Electromagnetic Field (EMF) Meter is designed to measure the strength of radio waves, and so is used to investigate the installation location of devices that receive radio waves and to inspect the safety of devices that output radio waves.
When investigating the installation location of equipment that receives radio waves, EMF Meters are useful for assessing antenna installations for TV broadcast reception and identifying potential interference with TV reception. In recent times, there has been growing demand for measuring WiFi radio wave strength.
Electromagnetic Field (EMF) Meter is used in safety inspections of equipment that outputs radio waves. It helps to reduce the risk of radio interference from equipment that generates radio waves and ensure compliance with electromagnetic field bio-safety guidelines, minimizing potential adverse effects of radio wave on the human body.
The most common method of measuring the strength of radio waves is to use an Electromagnetic Field (EMF) Meter to measure the voltage induced in an antenna with a known gain. The measured value is converted to an antenna with an effective length of 1 m and expressed in [dBμV/m].
Electromagnetic Field (EMF) Meter has different measurement methods depending on the application. To measure the radio wave strength in a space, an electric field probe is simply directed towards the target device. Typically, the electric field probe uses an EO modulator (electro-optic modulator) to detect the intensity of the radio waves.
In the absence of an electric field, light input from a light source in the field probe passes through an optical fiber, is reflected by an EO crystal, and then passes through another optical fiber before being output.
However, when an electric charge is present, the EO crystal alters the refractive index of the light. Consequently, the output light exhibits a different refractive index than the input light. By converting the modulated light into intensity information using a photodetector, the Electromagnetic Field (EMF) Meter measures the strength of the electric field.
In order to examine the radio wave absorption efficiency of the human body, etc., a device called a phantom must be inserted between the device under test and the electric field probe.
The phantom has the same electrical characteristics as the human body. The field probe of the Electromagnetic Field (EMF) Meter consists of an optical fiber, an EO crystal, and a glass tube covering it. The EO crystal exhibits the EO effect, in which the refractive index of light changes depending on the electric field present. The modulated signal is then detected by a photodetector.
The major difference between commercially available inexpensive assembled kits of Electromagnetic Field (EMF) Meter and those sold by the manufacturer is the significant difference in performance, convenience, and versatility. For example, in the case of inexpensive kits, the display is an analog pointer meter.
On the other hand, the manufacturer's Electromagnetic Field (EMF) Meter has a color LCD display, can store the obtained data in memory, and can communicate with other devices. Therefore, it can be said that Electromagnetic Field (EMF) Meter kits are more for educational or temporary use.
In recent times, WiFi signal strength can be measured with Electromagnetic Field (EMF) Meter apps. However, a little care is needed in the settings. When setting up a wireless network, the coverage area will hardly change.
However, the signal strength is weakened as it passes through obstacles like furniture and walls. So is interference caused by other wireless networks in the vicinity, causing the WiFi signal to progressively weaken as one move away from the source router.
When users get a strong signal, they get fast page loads and instant downloads. In order for the router to send a strong signal where it is needed, it is important to choose the right location and configuration of the router for the best results.
Recently, there are apps that display a visual map of the router wireless range. These apps also show information about other WiFi networks and the field strength of the WiFi signal. They visualize the signal strength of the wireless network as a handy heat map to assist in determining where to place the router.
*Including some distributors, etc.
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SOEKS USA, LLC, an American company established in 2008 and based in Miami, Florida, is a manufacturer and supplier of safety detectors. The company’s product portfolio includes radiation detectors, electromagnetic field (EMF) detectors, and Geiger counters. These products are applied in various sectors, including the healthcare industry for monitoring radiation levels, environmental monitoring to detect radiation levels in the environment, and construction for assessing electromagnetic fields on job sites. The company is ISO 9001 certified and sells its products to various countries, including Germany, Japan, and Australia.
AlphaLab, Inc. is an American manufacturer of scientific measurement devices established in 1993 and based in Salt Lake City, Utah. Under the brand name TRIFIELD, the company produces measurement tools for radio power density and electric fields (EMFs), USB gauss meter magnetometers, and monitors for electromagnetic interference (EMI) of single power lines or wall outlets. These are primarily used by research institutions and environmental organizations, but also have applications in the industrial and manufacturing sectors. Along with its products, the company offers additional meter calibration and PC data logging services for customers in need of additional support.
AlphaLab, Inc. is a manufacturer of industrial and scientific measurement devices founded in 1982 and based in Utah, USA. The company’s products are mainly designed for measuring static electricity, electromagnetic fields, and other electrical parameters. These include air ion counters, electrostatic voltmeters for measuring static charge voltages, and gaussmeters. The company also offers OEM, calibration, and technical support for customers with unique project parameters. Its products are mainly used by clients in the research, environmental, and engineering sectors.
Wavecontrol is a manufacturer of test equipment for the assessment of human exposure to electromagnetic fields and was established in 1997 at Barcelona, Spain. The company with its proprietary and ISO 17025-accredited calibrations is able to offer the fastest and most advanced technical services to clients. The products comprise EMF meters, personal monitors, area monitors, and field probes. They are used in the automotive, energy, defense, laboratories, and electromedicine sectors. These devices determine the radiofrequency safety and electromagnetic compatibility for avoiding detrimental effects on the performance of devices and save human beings from exposure to electromagnetic fields.
Chauvin Arnoux began in 1893 in France and took off in 1905 with the invention of the magneto ohmmeter. Chauvin Arnoux is an integrated manufacturer of portable test and measurement instruments used in the electrical sector, education, laboratories, and maintenance. A sample of Chauvin Arnoux’s products include calibrators, electrochemical measurements, relays, analystical software, and accessories. Chauvin Arnoux also offers industrial subcontracting, leveraging its large network of independently operating yet functionally integrated subcontractors’ abilities to manufacture and install PCBs, specialty items, sheet metal, tooling, and more.
Micronics is an ISO 9001-certified manufacturer of measurement systems, ultrasonic sensors, and flow meters that was established in Tokyo, Japan, in 1984. The company produces a broad range of measurement systems, parts, and components. These products include fixed flow meters, clamp-on flow meters, and portable flow meters. It also offers product testing, calibration, and troubleshooting services for customers requiring additional support. The company’s products are commonly used in water processing, energy management, and environmental protection operations.
PCE Instruments UK Ltd., started in 199 and headquartered in Manchester, UK, is a manufacturer and supplier of test instruments, equipment, and tools for weighing, measuring, and control systems. The company offers more than 500 test equipment, including analyzers, inspection cameras, meters, detectors, and sensors, with applications in various fields like data acquisition, electrical engineering, environmental science, building inspection, and food processing. Its manufacturing and development division is ISO 9001 certified, all its test instruments, equipment, and tools are factory calibrated, and the company also provides services for custom test instrument design, installation, and maintenance.
Ranking as of July 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Chauvin Arnoux Metrix |
17.8%
|
| 2 | AlphaLab, Inc. |
13.8%
|
| 3 | Wavecontrol |
13.5%
|
| 4 | SOEKS USA, LLC |
11.1%
|
| 5 | PCE Instruments UK Ltd |
11.1%
|
| 6 | Micronics |
8.4%
|
| 7 | AlphaLab, Inc |
7.7%
|
| 8 | LATNEX |
6.7%
|
| 9 | Teledyne FLIR LLC |
5.7%
|
| 10 | EMF Protection Ltd |
4.0%
|
Derivation Method
The ranking is calculated based on the click share within the electromagnetic field (emf) meter page as of July 2025. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
3 | 50.0% |
|
Spain
|
1 | 16.7% |
|
Japan
|
1 | 16.7% |
|
United Kingdom
|
1 | 16.7% |
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