Extech 480823 Operating Manual

User's Guide

Electromagnetic Field Meter
Model 480823

Introduction

Congratulations on your purchase of Extech’s Electromagnetic Field Meter, model 480823.
This battery powered meter measures and displays EMF in Gauss and Tesla units with a
frequency bandwidth of 30 to 300Hz. This professional meter, with proper care, will provide
years of safe reliable service.

Warranty

EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects

in parts and workmanship for one year from date of shipment (a six month limited warranty
applies to sensors and cables). If it should become necessary to return the instrument for
service during or beyond the warranty period, contact the Customer Service Department at
[phone] ext. 210 for authorization or visit our website www.extech.com for contact
information. A Return Authorization (RA) number must be issued before any product is
returned to Extech. The sender is responsible for shipping charges, freight, insurance and
proper packaging to prevent damage in transit. This warranty does not apply to defects
resulting from action of the user such as misuse, improper wiring, operation outside of
specification, improper maintenance or repair, or unauthorized modification. Extech
specifically disclaims any implied warranties or merchantability or fitness for a specific
purpose and will not be liable for any direct, indirect, incidental or consequential damages.
Extech's total liability is limited to repair or replacement of the product. The warranty set
forth above is inclusive and no other warranty, whether written or oral, is expressed or
implied.

Specifications

Display 0.5” (13mm) 3-1/2 digit (1999 count) LCD

with low battery and overload indication

Measurement rate Approx. 0.4 seconds
Maximum ranges and

resolution
Accuracy ± (4% + 3 digits) @ 50/60Hz

Frequency bandwidth 30 to 300Hz (single axis measurements only)
Over-range indication “1___” is displayed
Operating

Temperature/Humidity
Power source 9V Battery

Power consumption Approx. 3mA DC
Dimensions 5.2 x 2.8 x 1” (131 x 70 x 25mm)
Weight 0.36 lbs. (165g)

19.99µTesla (0.01) and 199.9mGauss (0.1)
NOTE: 1 µTesla = 10 milli-Gauss

Temperature: 32 to 122
RH: 90% max. (0 to 35°C); 80% max. (35 to 50°C)

o

F (0 to 50°C)

2

Model 480823 V2.1 12/07