USER MANUAL Multi‐Field EMF Meter Model EMF450
Safety Information CAUTIONS Before making a measurement, check if the low battery symbol is shown on the display when the meter is switched on. Replace the battery if the symbol is displayed. In the case of prolonged storage, remove the battery from the meter to prevent damage. Do not expose this device to direct sunlight or to extreme temperatures and humidity.
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.
Definitions Electromagnetic Radiation This meter is used to indicate radiated electromagnetic fields wherever there is a voltage, current, electric (E) or magnetic (H) field. Examples include the electromagnetic fields from radio broadcasting, TV transmitters and power lines. Electric Field Strength This is a field vector quantity that represents the force (F) on an infinitesimal unit positive test charge (q) at a point divided by that charge.
Display description 1. Data Hold 2. Auto power off (APO) 3. Audible alert 4. Battery status 5. USB power 6. Magnetic Field bargraph 7. Magnetic Field digital reading 8. XYZ axes values 9. Electric Field bargraph 1 23 4 5 Hold 22 20 10. Electrical Field digital reading 11. RF strength bargraph 12. RF strength histogram display 6 7 8 9 10 11 12 21 18 16 19 17 13. Select 14. Menu 15 15. Hold / Enter 16. RF electronic field color alert* 14 13 Figure 2 – Display Description 17.
Operation Power ON/OFF 1. 2. Press the power button to power the meter. The display will show the main measurement screen. If the meter does not power on, check that the batteries are installed correctly and are fresh (see battery installation/replacement section later in this guide). The EM450 can also be powered from a USB port. Press and hold the Power button for 3 seconds to power off the meter.
Low Frequency EMF Readings (Magnetic field) Point the front section of the meter toward the desired electromagnetic field to take a measurement. The meter simultaneously displays the electromagnetic field readings of individual (XYZ) and the aggregated Magnetic field readings. The aggregated calculation equation is expressed as: Due to environment related magnetic field factors, this electromagnetic field (EMF) meter may display a reading of under 0.50mG prior to testing.
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.
Battery Installation and Replacement Battery Installation Remove the rear battery cover and insert three (3) 1.5V AAA batteries observing correct polarity. Figure 5 Battery Installation Battery Replacement when the battery voltage drops below the The battery status icon shows low energy operating level. See installation instructions above for battery insertion. Never dispose of used batteries or rechargeable batteries in household waste.
Specifications Sensor Type: LF ‐ Magnetic Fields Range: Display resolution: Frequency range: Accuracy: 20mG /200mG /2000mG, 2µT /20µT /200µT 0.02/0.1/1 50/60Hz ± (15% + 100 digits) Sensor Type: LF‐ Electric Field Sensor Range: Display resolution: Frequency range: Accuracy: 50V/m to 2000V/m 1V/m 50/60Hz ± (7% + 50 digits) Sensor Type: RF Strength Range: 0.02µW/m² to 554.6mW/m² 0.02µW/cm² to 55.4µW/cm² 36.1mV/m to 14.46V/m 0.02mA/m to 38.35mA/m ‐51dB to 16dBm 0.02µW/m², 0.2µA/m, 0.2mV/m, 0.
