EMF meter or Electromagnetic field meter is a scientific instrument used for measuring Electromagnetic radiation. It is also referred to as EMR meter or Electromagnetic Radiation Meter.

Salient Features

• There is a variety of EMF meters available. Some of them are single axis, while some others are tri axis.
• Most of the EMR meters available are calibrated to measure electromagnetic radiation, generally alternating at 50 to 60 Hz.
• There are some meters available that can measure field alternating at as little as 20Hz.
• Majority of EMF meters measure the electromagnetic radiation flux density, while there are some meters which measure the change in an electromagnetic field.
• These meters are light weight, durable and handheld.

Electromagnetic fields can be either AC (Alternating current) or DC (Direct current). An EMF meter is capable of measuring AC electromagnetic fields, which are normally emitted from man-made sources such as electrical wiring.

There are Gauss meters or magnetometers that measure DC fields, naturally occurring in the earth's geomagnetic field and emitted from sources where direct current is present.

Uses & Applications

• Detecting magnetic field emissions from equipment like transmission lines, computers, electric blankets, electric appliances, televisions, etc.
• Used by people with pacemakers, office workers, welders, etc.
• Serve as source of interference for computer, audio; and other sensitive equipment.
• Measure electromagnetic field radiation levels from fans, electrical appliances, wiring, and power lines.
• Used in Paranormal research.
• People with pacemakers, office workers, sewing machine operators, welders also use use EMF meters.
• Sources of interference for computer, audio and other sensitive equipment.