Extech Instruments EMF Field Strength Meter, 10 - 8000 MHz (480846)

This Extech EMF meter stands out by covering a broad frequency span from 10 MHz to 8 GHz, making it suitable for diverse RF field measurement tasks where many meters are limited to narrower bands. It uses an isotropic (3-axis) sensor to capture fields regardless of orientation, and displays results in multiple units for electric field, magnetic field, and power density.

Highlights

• Frequency range 10 MHz to 8 GHz
• Isotropic (3-axis) sensor for orientation-independent measurements
• Measures electric field, magnetic field, and power density
• 4-digit LCD with data hold, min/max, and adjustable alarm
• Powered by 9V battery with auto power off

In daily use

The meter provides quick, reliable readings for RF exposure assessment, antenna testing, and general EMF surveys. The adjustable alarm threshold alerts you when field levels exceed a set limit, and the min/max function helps track fluctuations. The calibration factor can be adjusted for specific frequencies or antenna factors, enhancing accuracy in controlled setups.

Full specifications

• Frequency range: 10 MHz – 8000 MHz
• Sensor type: Isotropic (3-axis)
• Measurement units: mV/m, V/m, µA/m, mA/m, µW/m², mW/m², W/m², µW/cm², mW/cm²
• Electric field range: 0.1 V/m to 200 V/m
• Magnetic field range: 0.1 µA/m to 200 mA/m
• Power density range: 0.001 mW/m² to 99.99 W/m²
• Accuracy: ±2 dB at 2.45 GHz
• Resolution: 0.1 mV/m, 0.1 µA/m, 0.001 mW/m²
• Display: 4-digit LCD
• Data hold: Yes
• Alarm function: Adjustable threshold with audible alarm
• Min/max function: Yes
• Calibration factor: Adjustable
• Power supply: 9V battery
• Battery life: Approximately 15 hours
• Auto power off: Yes (with disable option)
• Operating temperature: 0 to 50 °C
• Operating humidity: < 80% RH

Final note

This meter is a practical tool for professionals needing wideband RF field measurements with straightforward operation and clear readouts.