Electromagnetic field survey use to determine high amounts of radiation from electromagnetic fields present
An electromagnetic field is a physical field produced by electrically charged objects. It affects the behavior of charged objects in the vicinity of the field. The electromagnetic field extends indefinitely throughout space and describes the electromagnetic interaction.

It is one of the four fundamental forces of nature, with the others being gravity, weak interaction, and strong interaction.

Hence the field can be viewed as the combination of an electric field and a magnetic field. The electric field is produced by stationary charges and the magnetic field by moving charges (currents).
The purpose of an EMF (electromagnetic field) survey is used to determine where electromagnetic fields are located in a 3 dimensional spectrum. In order to help, PhiMetrics has built the largest independent emf survey from multiple sources for providing analysis and insights.
PhiMetrics has built the largest independent telecom global analytics backend in India
EMF surveys are usually conducted for some of the following reasons:
  • to evaluate commercial space where equipment is being adversely affected by a building’s electrical systems or other interference (electromagnetic interference) sources
  • to evaluate the impact of power lines or adjacent TV, radio, and cell site transmitters and to provide guidance in the placement of new construction
  • to evaluate a person’s residence from an exposure assessment perspective

There are many benefits behind having an electromagnetic survey done. First and foremost, they help to determine whether or not there are high amounts of radiation from electromagnetic fields present. They are typically done when real estate transactions take place, when there are health concerns, when there are building assessments, to try and identify wiring errors and stray currents, when there are equipment interference issues, to log long-term data to evaluate fluctuations in EMF levels, and for future exposure projections.
To start, a diagram of the building in which you are doing the survey must be drawn. There you need to mark the location of the tower/antennae with respect to the building. Next calculate the official latitude/longitude location of the building. Mark the corners and the midpoints starting at C1 and ending with C8. At each corner and midpoint calculate the strength of the electromagnetic field in milliwatts per meter squared (mW/m2). Record the data that is collected and analyze it to check if there are fluctuations when compared to other buildings in the area.