Extech 480836, 480846, 480823 Data Sheet

Extech Instruments Corporation

• 285 Bear Hill Road • Waltham, MA 02451-1064 USA

Phone: [phone] • Fax: [phone] • E-mail: [e-mail] • Internet: www.extech.com

“Make Mine an Extech!™”

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EMF/ELF Meters & Multimeter Adaptors

What is an EMF/ELF Meter?

An EMF/ELF Meter measures the intensity (not the
direction) of a electromagnetic radiation fi eld in the

0.1 to 199.9mG (milli-Gauss) range. Radiation levels
present at video terminals, fans, wiring harnesses,
power lines, etc. can be accurately measured. EMF
is the acronym for ElectroMagnetic Field. ELF is the
acronym for Extremely Low Frequency.

How do they operate?

The electromagnetic radiation sensor is located behind
the front panel just below the LCD. Simply turn on
the unit, position the meter, and read the 0.5” LCD
displayed value. Since this is a single axis meter, up
to three readings may be necessary to obtain the full
electromagnetic 3-axes spectrum. An over-range
indicator lets you know when the reading is above
200mG.

EMF/ELF Multimeter Adaptor

Multimeter adaptors monitor EMF/ELF and connect

to any multimeter (200mV or 2VDC range) for display
purposes. The sensor outputs a 1mV per count signal

to the multimeter or even to a chart recorder. LED
indicator provides power status and battery check
information.

Applications

Power utility companies•
Manufacturers of electromagnetic equipment such •
as fans, generators, and video monitors
Computer workstations•
Wiring verifi cation and troubleshooting•
FCC compliance•
Magnetic tape head maintenance•

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