EMF Equipment

by / Friday, 16 January 2015 / Published in Healthy Building Inspections & Testing
EMF Equipment_Body Voltage test Kit

EMF Equipment

Recommendations for Non-professionals

Concerned that you might have an EMF related issue at your home or office but not ready to hire a professional to come out and perform an investigation?  Interested in the subject of EMF related issues and EMF equipment, but do not have thousands of dollars handy to buy the equipment the professionals use?

There are some good meters out there that can allow you to measure the electric/magnetic field strengths, dirty electricity and Radio-Frequency power density levels without having to spend the thousands of dollars that the professionals need for their thorough investigations.

It is a pretty common question by people who are interested in the field, but please realize that EMF issues or Electrosmog (or whatever term is common in your region) is a complicated subject and those that are true professionals in the investigation of EMF related issues typically have strong backgrounds in Engineering, Science, Building Sciences, Electromagnetism and Electrical Systems. While having good equipment is necessary, the interpretation of the readings and the mitigation of problems found is a much more difficult matter that requires professional training and background.

However, typically as a first step, many people will purchase low-end equipment that give poor measurements of their particular situation.  Sometimes low-end equipment highly exaggerate the problems that are present and drive more work to the EMF professionals.  Sometimes low-end equipment drastically understates the problems that are present and make it seem there is no problem when there is actually a serious EMF issue.

Buying the EMF equipment recommended below, you can rest assured that your measurements are fairly accurate and more easily determine whether or not hiring an EMF professional is right for your situation.  Considering all of the costs together, however, it is likely cheaper to hire a professional for an inspection, unless you are an enthusiast.

Electric Field Measurements

EMF Equipment

EMF Equipment
Body Voltage test kit

Electric fields are very hard to read accurately with low-end meters.  It is typically better to use a specialized multimeter to perform what is called a Body Voltage test as a surrogate.  This is done by measuring the body’s own electric field as it is induced upon by nearby electric fields.  Not any normal multimeter will do as the test requires a specific resistance and capacitor rating in-line to ground. Voltcraft has developed a multimeter that fulfills this requirement (and still performs all other standard multimeter functions).  There are a number of parts that are needed, however Safe Living Technologies of Canada has developed an all-in-one kit for such testing.  Price is about $160.

Safe Living Technologies product link: http://www.slt.co/Products/BodyVoltageKits/HomeTestKit.aspx


Magnetic Field Measurements

EMF equipment

Magnetic Field Meter

The Tenmars TM-192 is a digital gaussmeter with basic options that provides good measurements of the ambient magnetic fields along all 3 axis. Set the magnetic field measurement readings to “Average” to obtain the tRMS measurements of the magnetic fields present. This measures the ELF (Extra Low Frequency) magnetic field ranges of 30 Hz to 2000 Hz.  Typical price is about $200.

Tenmars EMF products link: http://www.tenmars.com/webls-en-us/05.html

RF Radiation Power Density Measurements

EMF equipment

RF EMF Strength Meter



The Extech RF EMF Strength Meter (480836) is a digital RF radiation power density meter that provides good measurements of the ambient RF radiation levels along all 3 axis.  Set the RF power density measurement readings to “Peak” or “Peak Hold” to obtain the peak strengths of the RF pulses in your vicinity.  RF pulses are extremely quick and will not register correctly if the meter is set to “Average”. This meter measures about 75% of the frequently used the Radar/RF/Wifi/Cell Phone bands. Range of 50 mHz to 3.5 Ghz.  Typical price is about $250.


Extech EMF products link: http://www.extech.com/instruments/product.asp?catid=57&prodid=351

Tenmars has a similar product, the TM-195: http://www.tenmars.com/webls-en-us/05.html

Dirty Electricity

EMF equipment

Dirty Electricity Meter

Greenwave has come out with a line of dirty electricity measuring and filtering devices. The house should be mitigated of all other issues before addressing dirty electricity as adding filters can exacerbate magnetic field issues if there are wiring problems in the home (which is found typically in about 70% of homes).  Typical price is about $150.

Greenwave products link: http://www.greenwavefilters.com/measuring-dirty-electricity/

Net Current

While the equipment for investigating Net Current issues is not specialized, the training is.  Investigating Net Current issues can pose a significant shock risk and should not be attempted by anyone not trained in electrical systems.  If you should notice fluctuating magnetic or electric fields, this points to a likely net current issue.


8 Responses to “EMF Equipment”

  1. Sophia says :


    If by background magnetic fields you mean magnetic fields outside the 50/60 Hertz bandwidth, you need a spectrum analyzer or meter capable of separating the 50/60 Hz magnetic fields from all other quantifiable low-frequency magnetic fields.

    The Gigahertz NFA 1000 from Safe Living Technologies is a great meter for this, and we’re presently experimenting with another less expensive meter with fewer options called the “3-AXIS GAUSSMETER IGNORES POWERLINES“. This unit we got from LessEMF.com The latter is inferior in a number of metrics, but on a budget it would help you get a sense if the primary frequency of ambient magnetic fields are “clean” (50/60 Hz) or “dirty” (>60 Hz)

    Call or email the office for a coupon code to either outfit. We buy in bulk and can help get you 10% off.

    Best of luck,

  2. Goodness-Mercy Weme says :

    Please can the extremely low frequency magnetic fields metre be used to measure background magnetic fields too

  3. Alex Stadtner says :

    Hello Rich,

    I take it you’re talking about using a multi meter for indirectly measuring electric fields through a method called “body voltage?” I researched this a few years ago but couldn’t find the details. It has something to do with the meter’s resistance having to be in a very narrow range.

    The Fluke 189 and any other body voltage meter sold by Safe Living Technologies would definitely work.

    Ask Rob from Safe Living Technologies. He’s a technofile very familiar with EMF measurements and meters.

    Good luck,

  4. Rich says :

    Hi Alex,

    Could you tell us which Fluke meter has the right calibration…and just how you determined that?


  5. Alex Stadtner says :

    In our opinion the Trifield meters are neither precise nor accurate. You get what you pay for. Often people call saying they have really high magnetic fields. We show up and find their Trifield is measuring much higher levels than are actually present. I would never recommend a Trifield.

  6. Peter says :

    What is your opinion on the Trifield 100XE? It looks like it has great reviews on Amazon. Thanks!

  7. Alex Stadtner says :

    You can’t just use any multi-meter if you want to use the IBE reference standards for body voltage. There’s something unique about the resistance that impacts how the meter measures body voltage… and if you don’t use an “approved meter” your readings won’t correlate to what everyone is using as the Body Voltage maximum levels of exposure. I have a Fluke meter that also has the right calibration, but it took research. Just saying that if you want to do Body Voltage testing you can’t use just any old multi-meter.
    Best of luck,

  8. buyer says :

    This link prices their products at about $160. The voltmeter is the main ingredient. Of course they don’t mention the make and model. Its a UNI-T that measures low AC voltage. They are $15-20 on Ebay. They have a few other items but they are not difficult to source. So they are selling maybe $40 of stuff for $160! Measuring low AC voltage is wonderful to know and tells us a lot. Highly recommended.

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