Extech Instruments EMF450 User Manual

EMF450-en-GB_V1.4 7/17
3
Introduction
This meter simultaneously measures and displays Magnetic Field, Electric Field, and RF Strength.
The unit of measurement and the measurement types are expressed in units of electrical and
magnetic field strength and power density. This meter is ideal for EMF measurements of power
lines, electrical appliances, industrial devices, cell phones, base stations, and microwave leakage.
This device is shipped fully tested and calibrated and, with proper use, will provide years of
reliable service. Please visit our website (www.extech.com) to check for the latest version of this
User Guide, Product Updates, Product Registration, and Customer Support.
Features
• Data hold (HOLD)
• Overload display “OL”.
• Brightness options: low-medium-high
• Selectable Auto Power off (APO) Time: 1; 3; 5; 10; 15; 30 minutes
• Key press Sounds / Alarm Sounds: On
; Off with programmable tone selections
• Information screen shows software version
• Languages: English, Traditional Chinese, Simplified Chinese, Japanese, Spanish
• Magnetic units selection：Gauss (mG) or Tesla (μT)
• Electric field strength: V/m
• RF Strength Units selection: (μW/m² ~mW/m²) (μW/cm²) (m V/m ~V/m) (mA/m) (dBm).
• Low-Frequency EMF Readings: Individual and aggregated XYZ axial readings:
• High-frequency EMF Readings
• RF Historical Records; up to 20 groups.
• Low battery indication： HIGH LOW

Extech Instruments EMF450 Specifications

General

Sensor Type	LF - Magnetic Fields, LF- Electric Field Sensor, RF Strength
Range	20mG /200mG /2000mG, 2µT /20µT /200µT, 50V/m to 2000V/m, 0.02µW/m² to 554.6mW/m²
Display resolution	0.02/0.1/1, 1V/m, 0.02µW/m², 0.2µA/m, 0.2mV/m, 0.002µW/cm², 2dB
Frequency range	50/60Hz, 50/60Hz, 50MHz to 3.5GHz
Accuracy	± (15% + 100 digits), ± (7% + 50 digits), ± 2dB at 2.45GHz
Display	4 digits Triple color TFT display
Sample rate	6 seconds
Sensors	Triple axes (XYZ) ELF and RF and Electric field sensor
Battery	Three (3) 1.5V alkaline batteries
Battery Life	Approx. 8 hours
Operating temperature and RH%	5°C~40°C (41°F ~104°F); < 80%RH
Storage temperature and RH%	-10°C to 60°C (14°F ~140°F); < 70%RH

Weight and Dimensions

Weight	Approx. 120g (4.2 oz.)
Dimensions	115 x 60 x 21mm (4.5 x 2.4 x 0.08”)