Gigahertz Solutions - NFA400

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Gigahertz Solutions NFA400 

Professional Level EMF Meter with Data Logger

Professional EMF Meter: This meter measures 3D magnetic fields as well as 1D potential free AC Electric Fields (Y-Axis). Ships with"NFASoft" Data Analysis Software - Will also log Radio Frequency "RF" Output from the HF59B and the HFW59D (5Hz – 400 000 Hz)

The NFA400 EMF Meter / GaussMeter is designed to meet Building Biology EMF measurement performance requirements.

"Know for sure" what EMF levels you are being exposed to  - own a Gigahertz Solutions NFA400 EMF Meter.


  • 3D measurement of the magnetic field
  • 1D potential-free electric field measurement
  • Ability for extensive long-term data recordings
  • Records simultaneously on 4 recording channels (CH1-3) for desired measurement and optional channel 4
  • Supplied with revolutionary PC software (NFASoft) for facilitated interpretation and documentation of the acquired data
  • Eliminates the need for X-Y-Z RMS calculations for magnetic field measurements. Ability to measure in single axis mode when necessary
  • Channel for recording Radio Frequency signals from the HFE59B RF Analyzer
  • Integrated Body Voltage Meter
  • USB Connection to PC
  • Standard 4 GB SD memory card supplied (upgradeable)
  • High frequency transient analysis for "Dirty Electricity"
  • Separate true RMS recordings of power line frequencies and harmonics (16.6 Hz | 50/60 Hz | 100/120 Hz plus even harmonics | 150/180 Hz plus odd harmonics | other frequencies < 2 kHz | all > 2kHz)
  • Real time voice recordings, or audio input, embedded into the data screen for playback during data evaluation
  • A 'no tamper' lock feature allows for the device to be left securely on site while data logging is operational
  • Customized Geiger Counter/Audio alarm: Allows for a personalized volume and high exposure alarm
  • Broadband peak measurements (genuine peak of a wave)
  • Li-Ion rechargeable batteries for up to 48 hours of continuous recordings
  • External power supply / charger included
  • All Gigahertz Solutions EMF Meters are backed by a 2 year manufacturer's warranty


  • NFA400 EMF Meter Users Guide
  • 2 Year Warranty Certificate
  • Ships with NFAsoft - Data analysis software - Loaded on SD memory card
  • Standard Factory Calibration Certificate
  • Plastic Carrying Case
  • Grounding Cable – 17 foot (5.18 meters) - for AC electric field measurements
  • Grounding Clip – For direct connection to water pipe
  • Body Voltage Aluminum Hand Probe and cable
  • Rechargeable Battery Pack with charger/power supply
  • 4 GB High Speed SD Memory Card
  • USB Interface Cable
  • Interface Cable (2.5 mm to 2.5 mm) – For connection to HFE59B
  • Silicone protective cover - yellow

Calibration Certificate:

During the manufacturing process strict calibration procedures are followed using only high end, calibrated measurement instruments. This guarantees that every NFA400 meter made by Gigahertz has been individually calibrated to a traceable standard. An official 3rd Party Accredited Calibration Certification plus data is available upon request. Please contact us for the current rates.


Frequency Response:
Flat Frequency Response from 5 Hz to 400KHz at -1 db
Electric Field Sensor:
1D – Y Axis
Magnetic Field Sensor:
3D – X Y Z Axis
Signal Rating:
RMS, RMS Hold, Peak
Magnetic Field Measuring Range:
1 - 19,990 nanoTesla (0.01 – 199.9 milliGauss)
Electric Field Measuring Range:
0.1 - 1999 Volts/meter - V/m
Body Voltage:
1 - 19,999 mV
Resolution Magnetic Field:
Finest Reading - 1 nT (0.01 mG)
Resolution Electric Field:
Finest Reading - Fine Range - 0.1 V/m
Accuracy / Basic Tolerance:
Compensated, better than -2 dB
78 x 230 x 37 mm (W x L x H) approx 3 x 9 x 1.5 inches
Weight of Meter:
560 g
Case Material:
Plastic case with protective silicone

1 Review

  • 5

    Posted by Richard D. on 5th Oct 2022

    Easy to use, good tutorial, very precise instrument. Good warranty , fast shipping. Thank you!