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3D-LF-Analyser with Data Logger NFA400
for an in-depth EMF analysis
Exceeds the building biology guidelines for NF study of sleeping places with in-depth analysis options for "dirty power". The intuitive NFAsoft evaluation software is included.
Frequency range: 5 Hz to 400 kHz (compensated)
Comprises the complete range of the TCO-guideline for computer work enviroments
The frequency response is extended from 5 Hz up to 400 kHz (TCO). ONE-dimensional potential-free... more
Product information "3D-LF-Analyser with Data Logger NFA400"
In addition to the three-dimensional magnetic field measurement with its compact internal sensor, the NFA400 features the following:
The frequency response is extended from 5 Hz up to 400 kHz (TCO). ONE-dimensional potential-free measurement of the electric field (Y-axis). Electric field measurement versus ground potential is possible with an integrated sensor or with the optionally available TCO conform probe TCO3. An integrated voice recorder facilitates the measurement analysis.
Also all common unique features of the NFA series are implemented:
- Parallel to the true 3D value of the magnetic field in the entire frequency range, the three axes of the field, railway and mains current as well as natural and artificial harmonics ("dirty power") are recorded separately.
- Powerful PC evaluation software NFAsoft included. Extensive graphics and statistics functions (eg 95th percentile, etc.).
- Continuous measurement guaranteed - even intermediate maxima are stored 10 times per second on the supplied SD card.
- Input socket for simultaneous RF recording with external RF analyzer or deeper analysis using current clamp / current loop.
- Compact integrated sensor for the magnetic field allows precise measurement even in very inhomogeneous fields.
- Li-ion batteries for 36 hours of uninterrupted recording at ten full data sets per second.
- The product information leaflet on the three NFAs is available for download below. It comprises an overview over the features which allows for an easy comparison.
- Also please find the most current version of the firmware and NFAsoft in the download section of our homepage.
- For a better understanding of the extensive measurement and analysis possibilities of the NFA meters, please also read the manual carefully, as it is part of the meter specification (available for download in our Download Center)
Available downloads:
Technical Data
Frequency range: | 5 Hz to 400 kHz (compensated) Comprises the complete range of the TCO-guideline for computer work enviroments |
Measurement range: | Magnetic flux densitiy: 1 - 19.990 nT Electrical field strength: 0.1-1999 V/m |
Precision: | 50 / 60 Hz: +/- 5 % 16 Hz - 30 kHz: +/- 1 dB 5Hz - 400 kHz: +/- 2 dB Isotropical deviation: +/- 1.5 dB Offset +/- 5 Digits |
Sensor: | Electrical field strength, potential-free, 1D (ONE-dimensional, Y-axis) Electrical field strength, versus ground potential Magnetic flux density, 3D (THREE-dimensional, XYZ) |
Audio analysis: | Field-strength-proportional acoustic signal (with "Geiger counter" effect), switchable |
Signal rating: | trueRMS, Peak, Peak Hold |
Power supply: | 7.4-Volt Li-ion high quality battery pack (included), average operating life in the logging mode 36 h Low-batt indication Auto-Power-Off function (saves capacity and is deactivated during longterm measurements) Power supply unit included |
Scope of Supply
Meter with silicone holster, incl. NFAsoft-software
4 GB SDHC SD-card, USB-cable (only for PCs with Windows or Linux), highly flexible grounding cable with 1mm² copper diameter, grounding clamp, internal Li-ion battery pack, power supply unit, manual, transport case
4 GB SDHC SD-card, USB-cable (only for PCs with Windows or Linux), highly flexible grounding cable with 1mm² copper diameter, grounding clamp, internal Li-ion battery pack, power supply unit, manual, transport case

Certificate of Calibration KAL-NFA400/1000
issued specifically for each meter upon request immediately prior to delivery!
TCO-compliant probe for the NFA series (NFA) TCO3
Suitable for NFA400 and NFA1000
Mounting Aid (NFA) PM5s
for building a potential free rod
Electrostatic Sensor ES-NFA
Designed to be connected to the NFA400/1000
3D-Magnetostatic Sensor MS3-NFA
Designed to be connected to the NFA400/1000
Connecting Cable HF-Analyser to NFA KAB0053
For the connection of an HF analyser to the NFA1000/400/30M
Suppression Kit DIY EDY
For signal cables
3D-LF-Analyser with Data Logger NFA1000
established as “Gold Standard” for EMF professionals