Extech EMF450 Magnetic field tester

Overview

Colour TFT display
Simultaneous display of 3 measured variables
Simple display due to colour-coded alarm table

Description

The EMF450 measures and displays magnetic fields, electric fields and RF field strength simultaneously. The unit of measurement and the types of measurement are expressed in units of electric and magnetic field strength and power density. The EMF450 is ideally suited for measurements on power lines, electrical devices, industrial equipment, mobile phones, base stations and microwave leaks.
The EM450 is equipped with three individual antenna sensors for measuring magnetic fields (EMF).

Characteristics

Electromagnetic radiation
This device is used to display of ausstrahlenden, electromagnetic fields, wherever voltage or current, electric (E) fields and magnetic (H) occur. To examples include electromagnetic fields of radio, TV transmission systems and power lines.
Electric field strength
This is a vector field, which the force (F) on a gland wind ends unit positive test loads (q), divided by this load. The electric field strength is in the units volts per meter (V/m). Use the units of the electric field strength for near-field power measurements.
Magnetic field strength (H)
This is a field vector equal to the magnetic flux density divided by the permeability of the medium. The magnetic field strength is in amperes per meter (A/m). This measurement is for near-field power measurements.
Power density (S)
Energy per unit of area in direction of propagation. This is usually in the Unit Watts per square meter (W/m2) or user-friendly in milliwatts per square meter (mW/cm2).
The characteristics of electromagnetic fields
Electromagnetic Fields spread as waves and travel at the speed of light. The wavelength is proportional to the frequency.
Is the distance from the Source field less than three wavelengths, a near-field. In the case of a remote field is the distance is more than three wavelengths. In the near field is the ratio of electrical (E) and magnetic field strengths (H) is not constant. It should therefore be measured each individually. In the far-field there is the possibility of a field size to measure and the other to calculate accordingly.

Data freeze (HOLD)
Adjustable switch-off (APO)
Buttons/alarm tones adjustable
English Language menu, switchable in Chinese, Japanese, Spanish
Selection of the magnetic field measuring units: Gauss (MG) or Tesla (μT)
Electric field strength: V/m
Selection of the RF field strength measuring units: (μW/m² to mW/m²) (μW/cm²) (mV/m to

Delivery content

• Batteries - Instruction manual.

Keywords

00793950224502, Extech, EMF450, Electro-smog, electromagnetic fields