Field Analyser NFA 400 specifications

NFA 400 Field Analyser

Description

The Field Analyser NFA 400 can measure Low Frequency electric and magnetic field strength. It measures the field strength in 6 frequency bands between 5 Hz - 400 kHz. It is sensitive to the direction of the field. It is often used to determine the strength of unwanted fields in case of EEG measurements. It can also be used to determine the field strength of the magnetic fields used for detection of head movements.

Specifications

• Item weight: 1,50 kg
• Frequency range: 5 Hz - 400 kHz (compensated).

• Measurement range:
  • Magnetic flux density: 1 - 19,990 nT
  • Electric field strength: 0.1 - 1999 V/m

• Precision:
  • 50 / 60 Hz: +/- 5 %
  • 16 Hz - 30 kHz: +/- 1 dB
  • 5Hz - 400 kHz: +/- 2 dB
  • Isotropic reduction: +/- 1.5 dB
  • Offset +/- 5 digits

• Sensor:
  • Electric field strength, potential-free,1D (ONE-dimensional, Y-axis)
  • Electric field strength, potential bound
  • Magnetic flux density, 3D (THREE dimensional, XYZ)

• Audio analysis: Sound signal proportional to field strength (with "Geiger counter effect", switchable)

• Signal rating: trueRMS, peak value, peak hold

• Signal output ports: AC-/DC outputs

• Power supply: 7.4-volt Li-ion high-performance battery pack (included),
• Average operating time in recording mode: 36 h
• Low-Batt. indicator
• Auto power-off function (deactivated for long-term measurements)
• AC adapter/charger (included)