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Low Frequency EMF measuring instruments

 The following table is an overview of LF instruments available from Gigahertz, measuring electric and magnetic fields of A/C electricity.

Gigahertz EMF measuring instruments

  • Description
Instrument   Description  Price, $
 ME3030B  great beginner's choice   220
 ME3830B  5 Hz to 100 KHz frequency range   336
 ME3840B  allowing frequency analysis   449
 ME3851A  professional standard   585
 ME3951A  5 Hz to 400 KHz !   816
 NFA30M  3-D magnetic field analyser with data logger  1095
 NFA400  new generation measuring of electric and magnetic fields  2126
 NFA1000  the ultimate professional tool for 3D and data logging, as well as dirty frequencies  3120
Gigahertz

ME 3030B

  • Description
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Great value, simple to use, relevant results.  Protect your health, know your electric environment!
The ME 3030B measures electric and magnetic A/C fields. Sometimes referred to as a Gaussmeter, this instrument can do much more!

We have received many calls from all over Australia by people who are concerned about the electro-pollution in their home, office or school.  If no Building Biologist is near, you will be able to make accurate measurements with the ME 3030B, yourself.

This German producer of high quality Building Biological products makes an affordable instrument, which is nevertheless precise enough not to fall into the 'toy' category.

Key Benefits

  • Makes your home a safer place by measuring electro-pollution.
  • Very well designed and simple to work with.  No technical knowledge required.
  • Measures not just magnetic fields, but also the very important electric fields.
  • Electric fields are measured in the only objective way, against Earth.
  • Measures not just 50Hz mains emissions, but also resonances emitted by transformers, substations e.g.,  up to 2 kHz.
  • Low battery indication helps avoid inaccurate measurements.
  • 2 years warranty.
  • Unsurpassed value for money, quality, precision and workmanship.

Instruction Manual (pdf)

 

Frequencyrange: 16 Hz - 2 KHz (compensated, better than -2 dB)

Measuring:

Magnetic flux density (unidimensional): 1 - 1999 nT
Electric field strength: 1 - 1999 V/m Genauigkeit: +/- 2 %, +/- 20 digits @ 50/60 Hz

Sensors: E-field sensor for electrical LF- fields
H-field sensor for magnetic LF-fields (one-dimensional)

Audio: acoustic signal proportional to the field strength with "Geiger-counter-effect"

Power supply: 9 Volt alkaline manganese battery (included), average operation time 24-36 hours
Low-Batt. indication, auto-power-off

Gigahertz

ME3830B

  • Description
  • More Details

A simple to use instrument for LF EMF measurements

This is THE device for technical amateurs - especially easy to operate. It supports all above mentioned "common advantages" and it allows a straight forward assessment of the exposure, a determination of suitable remedial actions, as well as a control of their effectiveness.

Comprises all features of the ME3030B, and additionally offers:

  • A clearly extended frequency range: from 5 Hertz to 100 Kilohertz. This frequency range (in accordance with SBM) also includes the higher frequencies caused by, for instance, energy saving lamps, switching-mode power supplies, electronic dimmers, or monitors, which are considered especially critical.

Instruction Manual

 

Frequency range: 16 Hz - 100 KHz (compensated, better than -2 dB).

Measuring sensitivity: Magnetic flux density (unidimensional): 1 - 1999 nT
                                  Electric field strength: 1 - 1999 V/m

Sensitivity: +/- 2 %, +/- 20 digits @ 50/60 Hz

Sensor: E-field sensor for electrical LF- fields H-field sensor for magnetic LF-fields (one-dimensional)

 Audioanalysis: acoustic signal proportional to the field strength with "Geiger-counter-effect"

Power supply: 9 Volt Alkaline manganese battery (included), average operation time 24-36 hours

Signal: RMS

Warranty: 2 years

Weight: 0,42 kg

Gigahertz

ME3840B

  • Description
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The link between amateur and professional instruments

This device supports all above mentioned.-  It is especially popular among medics and alternative practitioners, as it offers a perfect combination of easy handling and professional measurement possibilities. It allows an easy allocation of the electrosmog frequencies to the (European) train power or the mains power as well as to the artificial harmonics, thus facilitating an especially precise consultation of remedial actions and an easy control of their effectiveness.
Comprises all features of the ME3830B, and additionally offers:

  • A switch-able internal filter module as in the professional devices, allowing a numeric differentiation of train power and mains supply, as well as the artificial higher frequencies beyond 50/60 Hz. A useful aspect considering the even lower precautionary values for higher frequencies.
Frequency Range: 5 Hz - 100 KHz (compensated, better than -2 dB).
Measurement Range: Magnetic flux density (unidimensional): 1 - 1999 nT
Electric field strength: 1 - 1999 V/m
Accuracy: +/- 2 %, +/- 20 digits @ 50/60 Hz
Sensor: E-field sensor for electrical LF- fields
H-field sensor for magnetic LF-fields (one-dimensional)
Audio Analysis: acoustic signal proportional to the field strength with "Geiger-counter-effect"
Electric power supply: 9 Volt Alkaline manganese battery (included), average operation time 24-36 hours
Low-Batt. indication, auto-power-off
Signal Rating: RMS
Warranty: 2 years
Weight: 0,46 kg
Gigahertz

ME 3851A

  • Description
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Professional Low Frequency Measuring of 240V/ 60 Hz - with the ME 3851A.

This device represents the low-cost access to the professional low-frequency measurement technology. Its functions and features are tailored to the needs and practical experiences of Building Biology.

                             Instruction Manual (pdf)

Technical Data:
Frequency Range:  5 Hz - 100 KHz (compensated, better than -2 dB).
Switchable, internal frequency filter: 16,6Hz bandpass, 50 Hz highpass, 2 kHz highpass for identification and evaluation of sources of pollution
Measurement Range:  
Magnetic flux density (unidimensional): 0.1 - 1999 nT
                                    Electric field strength: 0.1 - 1999 V/m
Accuracy:  +/- 2 %, +/- 7 digits @50/60Hz
Sensor:  E-Fieldsensor for electrical LF- fields
H-Fieldsensor for magnetic LF-fields (one-dimensional)
Audio Analysis:  acoustic signal proportional to the field strength with "Geiger-counter-effect"
Signal Rating:  RMS
Outputs:  AC- and a DC-output
Warranty:  2 years
Weight:  0.74 g

 

Scope of Delivery:

    * Measurement device in protective case
    * highly flexible grounding cable with a copper diameter of 1mm²
    * grounding clamp
      NiMH battery inside the meter
    * mains adaptor
    * battery charger
    * various adaptors
    * detailed instruction manual

 

 

Gigahertz

ME3951A

  • Description
  • More Details
The professional choice

With its full TCO bandwidth, this device is predestined for the professional user.

Its functions and features are tailored to the needs and practical experience of the building biology. Due to its comparably low price, it is often also used for scientific and industrial purposes.

Comprises all features of the ME3851A, and additionally offers an extended frequency range from 5 Hertz to 400 Kilohertz, in accordance with the TCO guidelines. An important decision criterion when offering professional LF measurements.

Frequency range: 5 Hz - 400 KHz (compensated, better than -2 dB).
Switchable, internal frequency filter: 16.6Hz bandpass, 50 Hz highpass, 2 kHz highpass for the identification and evaluation of sources of pollution

Measuring range: Magnetic flux density (unidimensional): 0.1 - 1999 nT
                         Electric field strength: 0.1 - 1999 V/m

Accuracy: +/- 2 %, +/- 7 digits @ 50/60 Hz

Sensor: E-field sensor for electrical LF- fields, H-field sensor for magnetic LF-fields (one-dimensional)

Audioanalysis: acoustic signal proportional to the field strength with "Geiger-counter-effect"

Power supply: Rechargeable NiMH battery inside the meter, average operation time: 8 hours
Low-Batt. indication, auto-power-off AC-adaptor for charging and long-term-operation included

Signal: RMS

Signal-output: AC- and DC-output

Warranty: 2 years

Weight: 0,77 kg

Gigahertz

NFA 30 M

  • Description
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 3-D magnetic field analyser with data logger

Allows long-term measurements as required in the standard values for bedrooms (SBM). It is based on a superior concept for efficient data acquisition of magnetic fields, extensive long-term recordings of all relevant parameters, and an easier interpretation and documentation of the acquired data. The photo shows the optically identical NFA 1000.

Capable of dirty power analysis!

Manual

Further Information about the NFA series

Features:

  • 3D measurement in a truly isotropic point.
  • Separate recording of railway and grid frequency as well as higher harmonics with true RMS valuation (16.6 Hz | 50/60 Hz | 100/120 Hz plus even harmonics | 150/180 Hz plus uneven harmonics | other frequencies < 2 kHz | all > 2 kHz).
  • Measures 110,000 samples per second, the maxima of which are recorded up to 10 times per second on the 4 GB SDHC memory card supplied. Due to the simultaneous and continuous sampling of frequency and axis information you won't miss even the smallest peaks.
  • Voice recording of audio notes to facilitate measurement and interpretation of recordings.
  • Input jack to record an external HF-Analyser.
  • Supplied with revolutionary PC evaluation software: Super fast real-time presentation, statistic functions (e.g. 95. percentile), analysis tool for "Dirty Power".
  • Li-Ion rechargeable batteries for up to 48 hours of continuous recording. External power supply possible (power adaptor included).

Let's talk about its outstanding ability of harmonic analysis ("Dirty Power").

The NFA30M does not end at 2 kHz – with the help of a modified FFT it can even measure from 16 Hz to 30 (!) kHz, and that for at least 48 hours, continuously and without interruptions. While measuring, it makes 10 recordings per second of the respective maximum value of the expired tenth of a second, in parallel and separately representable in a graph for:

-  the isotropic value

X,Y and Z axis separately

16.7 Hz: traction power

50/60 Hz: mains power

-  „100/120 Hz": sum of the first 4 
   "even" harmonics

-  „150/180 Hz": sum of the first 4 
   "uneven" harmonics 


-  „R < 2kHz": „remaining frequencies smaller 
   than 2 kHz" (i.e. without the first 4 harmonics)

„> 2 kHz": harmonics up to 30 kHz 
   (higher frequencies would require one of its big brothers, 
   i.e. the NFA1000 or NFA400)

-  in combination with an HF-analyser, it can
   also be applied for logging high frequencies.

In addition to the very useful graphic plotting, the unique analysis software NFAsoft* is able to count the total of "steep edges" per hour (for instance caused by pulsed peaks of flux densitiy from electronic devices) either for the complete recording time or for any wanted zoom level. This way the building biology for the first time has the possibility of quantitative comparative parameters to analyse the impacts of such phenomena on human beings.

NFA400

  • Description
Innovative alternative to the ME series, based on a superior concept for efficient data acquisition of electric and magnetic fields, extensive long-term recording of all relevant parameters and an easy interpretation and documentation of the acquired data.

Comprises all features of the NFA1000, but...

  • ONE-dimensional instead of THREE-dimensional electrical field measurements (Y-axis) and no peak measurements.
  • Frequency Range: 5 Hz to 400 KHz (compensated, better than -2 dB), even better than the technical specifications required by the TCO standards for workstations.

 

NFA Series summary

NFA videos, manual, and much more

Gigahertz

NFA1000

nfa1000sm.jpg
  • Description
  • More Details

3D-LF-Analyser with data logger:  NFA 1000

for the most in-depth analysis - our masterpiece!

Innovative alternative to the ME series based on a superior concept for efficient data acquisition of electric and magnetic fields, extensive long-term recordings of all relevant parameters and facilitated interpretation and documentation of the acquired data.

Manual

Video 

Features:

  • Real 3D potential-free electric field measurement, patent pending.

  • 3D measurement of the magnetic field in a truly isotropic point.

  • Separate recordings of railway and grid frequencies as well as higher harmonics with true RMS valuation (16.6 Hz | 50/60 Hz | 100/120 Hz plus even harmonics | 150/180 Hz plus uneven harmonics | other frequencies < 2 kHz | all > 2kHz)

  • Measures 110,000 samples per second, the maxima of which are recorded up to 10 times per second on the 4 GB SDHC memory card supplied. Due to the simultaneous and continuous sampling of frequency and axis information you won't miss even the smallest peaks.

  • Voice recording of audio notes to facilitate measurement and interpretation of recordings.

  • Broadband peak measurements (genuine peak of a wave) as a firmware update in preparation.

  • Optional, in preparation: Wireless data transfer to external display unit /PC.

  • Supplied with revolutionary PC evaluation software: Super fast real-time presentation, statistic functions (e.g. 95. percentile), analysis tool for "Dirty Power".

Li-Ion rechargeable batteries for up to 48 hours of continuous recordings. External power supply possible (power adaptor included).

Potential-free telescopic rod 160 cm (NFA) PM4s

pm2_000
  • Description

For your NFA meters:

  • Potential free rod 160 cm.
  • Made of non-conductive material.
  • With special connection for the NFA-series.