Extech Instruments EMF450 User Manual

EMF450-en-GB_V1.4 7/17
8
Menu Settings
1. Momentarily, press the center MENU key to enter the main menu.
2. Press the right SELECT key to cycle through the list.
3. Press the left ENTER key to enter the selected option.
4. Use the right SELECT key to choose the desired setting.
5. Press the left ENTER key to confirm the setting, the meter will exit the menu unless there
are more settings required for the given parameter (as in the SOUND setting); in which case
continue using the keys in the same manner as described in this section.
6. From the Main Menu screen (Figure 4), the MENU key can be used to exit the Main Menu.
Figure 4 – Main Menu Option Screen
Brightness: Low, Middle, High
Magnetic unit: Gauss/mG, Tesla/
µT
(Used for testing Electrical power (50/60Hz))
RF strength unit: µW/m²-mW/m², µW/cm², mV/m-V/m, mA/m, and dBm
(Used for testing RF energy from 50MHz to 3.5GHz)
Language: English, Traditional Chinese, Simplified Chinese, Japanese, Spanish
Power OFF (Auto): NO (OFF), 1, 3, 5, 10, 15, 30 (minutes). Factory default is 5 minutes.
Sound: Enable/Disable
when ‘enable’ is selected, the keys/alarm sound menu will open.
Keys: 3 options (1, 2, or 3) represent alternate keystroke sounds.
Alarm: 3 options (1, 2, or 3) represent alternate alarm sounds.
Information: Displays the software version

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”)