{"id":2980,"date":"2015-04-17T03:09:40","date_gmt":"2015-04-17T03:09:40","guid":{"rendered":"http:\/\/www.scantech7.com\/?page_id=5"},"modified":"2021-12-06T09:56:26","modified_gmt":"2021-12-06T09:56:26","slug":"emf-testing-surveys-measurement-inspection-facts","status":"publish","type":"page","link":"https:\/\/scantech7.com\/emf-testing-surveys-measurement-inspection-facts\/","title":{"rendered":"EMF Safety and Survey Testing &#8211; RF Measurements &#8211; Commercial Inspection &#038; FAQ Page"},"content":{"rendered":"<p><strong>EMF Testing Surveys \/ RF Measurement Commercial \/ Industrial Inspection &amp; FAQ Legacy Reference Page<\/strong><\/p>\n<p><span style=\"color: #ff0000;\"><strong>* Effective January 1st, 2019 ScanTech no longer performs residential testing OR consulting for homeowners and tenants &#8211; all services are COMMERCIAL ONLY. Instead I will redirect you to a page for resources to other companies and common questions &#8211; <a href=\"http:\/\/www.scantech7.com\/emf-testing-indoor-air-quality-testing-environmental-links\/\">CLICK HERE.<\/a><\/strong> <\/span><\/p>\n<p>I am leaving this archived page for informational use &#8211; <strong>please disregard any statements implying or stating I still do residential work<\/strong> as I currently don&#8217;t have the bandwidth to go back and edit accordingly. Thank you!<\/p>\n<p><span style=\"color: #ff6600;\">Q. What kinds of safety levels for EMFs exist?<\/span><\/p>\n<p>A. There are many set by different countries and organizations. The following links are only a partial list as suggested guidelines for EMF safety shift over time and there is no agreement based on the epidemiological difficulties in establishing what is considered &#8220;safe&#8221;.<\/p>\n<p><a href=\"http:\/\/www.scantech7.com\/emf-rf-magnetic-electric-field-sound-noise-radiation-safety-levels-dallas-fort-worth-houston-austin\/\">EMF &amp; RF SAFETY LEVELS COMPARISON: PART 1<\/a><\/p>\n<p><a href=\"http:\/\/www.scantech7.com\/emf-rf-electric-magnetic-field-microwave-radiation-noise-level-safety-levels\/\">EMF &amp; RF SAFETY LEVELS COMPARISON: PART 2<\/a><\/p>\n<p><span style=\"color: #ff6600;\">Q. Do you perform commercial inspections for property and real estate?<\/span><\/p>\n<p>A. ScanTech performs non-destructive testing, surveys and scanning of energy fields, electromagnetic force, sound and background radiation with regards to power lines, transformers, substations, cell towers, natural stone, radon, etc for commercial clients only.<\/p>\n<p>We do not inspect for structural, plumbing, foundation or any other aspect of the home or building except certain parts of the heating \/ air conditioning (HVAC) system for possible indoor air quality issues. Unusual EMF readings MAY suggest an electrical wiring issue, but only a licensed electrician can make that final determination.<\/p>\n<p><span style=\"color: #ff6600;\">Q. How long does it take to perform an EMF inspection?<\/span><\/p>\n<p>A. It depends on factors such as the amount of square footage (interior and exterior) to be inspected, the type of report needed (verbal or written) and whether the issue requires any additional troubleshooting or consulting. Typically a 2500 square foot home will take an hour or less with a written report and average sized lot. Very large dwellings can take up to 2 hours and smaller (apartment or condo) units may be in 30 minutes or less.<\/p>\n<p><span style=\"color: #ff6600;\">Q. How soon can you come out?<\/span><\/p>\n<p>A. Depending on current schedule, it usually takes at least 1-2 days to get an inspector onsite, but in some cases same day service is possible depending on the time of day. Rush fees may apply depending on the circumstances.<\/p>\n<p><span style=\"color: #ff6600;\">Q. What kind of ROI (Return on Investment) do I get when I hire ScanTech?<\/span><\/p>\n<p><strong>EMF TESTING \/ RESIDENTIAL SAFETY LEVEL SURVEYS:<\/strong><\/p>\n<p>Several things including Peace of Mind, documentation, expert consulting on energy fields and other environmental factors which may impact you and your family&#8217;s health, and time \/ money saving advice on what you can do and what you PROBABLY shouldn&#8217;t do.<\/p>\n<p>Very often homeowners may consider extreme and life disrupting steps which may be financially expensive, time consuming, COMPLETELY UNNECESSARY or even harmful. Examples would be installing unnecessary shielding, buying expensive gadgets that may actually make things worse, or even relocating. A comparatively affordable service visit can save your family LITERALLY tens and hundreds of times over the cost of an inexpensive survey.<\/p>\n<p><strong>COMFORT AND AVOIDING ENVIRONMENTAL ILLNESSES &amp; DISEASES<br \/>\n<\/strong><\/p>\n<p>Anomalous energy fields have been linked in some studies to symptoms such as headaches, dizziness, fatigue and sleeplessness. While ScanTech does not dispense any medical advice, we can survey your sleeping area for elevated levels of EMF, RF radiation or geomagnetic disturbances and then make suggestions on rearranging the placement and position of your bed or other furniture used for resting.<\/p>\n<p><strong>EMI\u00a0 INTERFERENCE ISSUES:\u00a0 MYSTERIOUS PROBLEMS &amp; ANOMALIES:<\/strong><\/p>\n<p>Fresh insight, fast response and effective resolution on complex energy field \/ EMF \/ Electromagnetic Interference (EMI) and RF (Radio Frequency) issues which are disrupting sensitive electronics or company \/ commercial workflow.<\/p>\n<p><span style=\"color: #ff6600;\">Q. How far away do I have to be from a power line or power lines to be safe? Or what is a safe distance from power lines that falls within EMF safety levels?<br \/>\n<\/span><\/p>\n<p>A. There is no firm answer to this because power lines vary greatly in their magnetic field levels and falloff with distance. In addition, factors such as physical configuration, load and phasing make a huge difference in the EMFs radiated by the lines. Also, it implies that you are aware of all of the power lines in your living area and most of them are buried, behind walls or in sources that you may not suspect.<\/p>\n<p>I wrote a special article dealing with this subject which can be found here:<\/p>\n<p><a href=\"https:\/\/emfsurvey.com\/emf-power-lines-distance-safety-levels-protection\/\">https:\/\/emfsurvey.com\/emf-power-lines-distance-safety-levels-protection\/<\/a><\/p>\n<p><strong>A Basic Introduction to the Anatomy of Your Home&#8217;s Powerline<br \/>\n<\/strong><\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"AN9KMuSR49\"><p><a href=\"https:\/\/hackaday.com\/2016\/02\/22\/a-field-guide-to-the-north-american-utility-pole\/\">A Field Guide to the North American Utility Pole<\/a><\/p><\/blockquote>\n<p><iframe class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;A Field Guide to the North American Utility Pole&#8221; &#8212; Hackaday\" src=\"https:\/\/hackaday.com\/2016\/02\/22\/a-field-guide-to-the-north-american-utility-pole\/embed\/#?secret=AN9KMuSR49\" data-secret=\"AN9KMuSR49\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<p><span style=\"color: #ff6600;\">Q. I&#8217;m not near any power lines, or they are xxx feet away. Could I still have elevated fields in my home?<\/span><\/p>\n<p>A. One of the largest sources of EMF in the home is improper wiring. ScanTech&#8217;s experience can help pinpoint likely areas of concern and make appropriate recommendations. Odds are, you may have other things to worry about besides EMF, such as electrical circuits that aren&#8217;t properly wired to code.<\/p>\n<p>These violations &amp; faulty wiring can cause safety issues such as overloads, electrical shock and even fires. Often, dimmer switches and three-way (multi-locational) switches have excessive EMF due to a lack of adherence to NEC (National Electric Code) specifications.<\/p>\n<p>Power lines themselves can be unpredictable as to the amount of EMF that they emanate at any given distance. We have seen levels as high as 250 mG, to as low as 2.0 mG directly beneath electrical lines. This wide disparity in readings is due to varying current, structural dimensions and phase arrangement. Also, excessive EMF can emanate from buried power lines and improperly grounded water or gas mains.<\/p>\n<p>The only way to be sure is to do a proper survey.<\/p>\n<p><strong>Another thing to consider is that many power lines or current carrying conductors are buried underground.<\/strong> I have often found elevated levels in a residence or business due to a subterranean conduit or improperly grounded sewer pipe, water line, sprinkler system, telephone\/cable service, etc. Even gas pipes carry voltage in order to prevent corrosion, but these typically don&#8217;t emit fields strong enough to be concerned about except in cases of improper contact or the adjacent installation of other lines.<\/p>\n<figure id=\"attachment_263\" aria-describedby=\"caption-attachment-263\" style=\"width: 225px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/scantech7.com\/wp-content\/uploads\/2015\/04\/Elevated-EMF-Childrens-Room.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-263\" src=\"https:\/\/scantech7.com\/wp-content\/uploads\/2015\/04\/Elevated-EMF-Childrens-Room-225x300.jpg\" alt=\"Elevated EMF Children's Room\" width=\"225\" height=\"300\" srcset=\"https:\/\/scantech7.com\/wp-content\/uploads\/2015\/04\/Elevated-EMF-Childrens-Room-225x300.jpg 225w, https:\/\/scantech7.com\/wp-content\/uploads\/2015\/04\/Elevated-EMF-Childrens-Room.jpg 450w\" sizes=\"(max-width: 225px) 100vw, 225px\" \/><\/a><figcaption id=\"caption-attachment-263\" class=\"wp-caption-text\">Elevated EMF Children&#8217;s Room<\/figcaption><\/figure>\n<p><span style=\"color: #ff6600;\">Q. Are there industrial \/ commercial applications for EMF \/ RF surveys?<\/span><\/p>\n<p>A. Yes, in cases of worker safety and concerns, equipment interference from EMI (Electromagnetic Interference) and with the increasing adoption of RFID (Radio Frequency Identification), Bluetooth, and other wireless information services there is a rising need for proper mapping and awareness of electromagnetic energies which permeate our working \/ living spaces.<\/p>\n<p>Also, certain types of equipment such as scanning electron microscopes (SEMs) used in nanotechnology are very sensitive to magnetic fields due to the nature of their focusing mechanism. RF interference can also occur in industrial settings such as a semiconductor fab plant with many machines generating excessive RF which can damage or interfere with computer controls.<\/p>\n<p>EMC (Electromagnetic Compatibility) dictates design issues with EMI in order to ensure smooth, error free operation when multiple machines are emitting energy fields which could conflict with each other.<\/p>\n<p>Radio frequency interference, RFI, is any undesirable electrical energy with content within the frequency range dedicated to radio frequency transmission. Conducted RFI is most often found in the low frequency range of several kHz to 30MHz. Radiated RFI is most often found in the frequency range from 30MHz to 10GHz.<\/p>\n<p><span style=\"color: #ff6600;\">Q. How accurate are your surveys?<\/span><\/p>\n<p>A. Though the accuracy of our digital gaussmeter is 3%, there are other factors to consider. Load, time of day, equipment fluctuations and other point source interference can cause variations in readings. The other main issue is getting the exact location of the measurement as inches can make a significant difference. Having good maps and blueprints available will greatly enhance the quality of your survey. In addition, our laser measuring tape is accurate to within 1 millimeter at over 200 yards and can perform as built style surveys for an additional fee.<\/p>\n<p>But regardless of the factors involved, the results of our inspections are consistently accurate enough to make an informed decision on the health and safety of yourself and your family.<\/p>\n<p><span style=\"color: #ff6600;\">Q. Can you pick up cell phone \/ microwave tower emissions?<\/span><\/p>\n<p>A. Yes &#8211; our RF meters are sensitive enough to pick up on radio frequency emissions well within the suggested safety guidelines by the various engineering \/ government agencies such as the FCC, ICNIRP, ANSI \/ IEEE and others. It can also pick up on personal RF from handheld cell phones, cordless phones, and wireless base stations \/ routers.<\/p>\n<p>What sets it apart from other standard broadband meters is the manner in which it calculates complex RF field exposure and gives an actual safety percentage estimate over a period of time. It is also adjustable by frequency band and even safety standard. (such as non-enforceable 10 milliWatt OSHA Nonionizing Radiation 1910.97 limit or the 1 microWatt Salzberg Innen 2002 standard or the enforceable IEEE C95.1-1999 standard)<\/p>\n<p><span style=\"color: #ff6600;\">Q. How often do you find an issue?<\/span><\/p>\n<p>A. Enough to where it is worth paying for a survey &#8211; at the least for the peace of mind that comes with making an informed choice or decisions about where you live.<\/p>\n<p><span style=\"color: #ff6600;\">Q. I am a realtor &#8211; how often will this discourage my clients from completing a real estate transaction?<\/span><\/p>\n<p>A. In most cases, the issues found (if any) are easily remedied by minor electrical repairs. The information that ScanTech provides helps clients to feel good about the home in question and can even encourage a faster, smoother close.<\/p>\n<p>Only in certain instances such as high-tension power lines being right next to the home AND the magnetic fields being considerably stronger than normal will remediation be expensive or near impossible. Most people will automatically be concerned by the visual, physical presence of high voltage line structures next to their living areas &#8211; a survey by an unbiased, experienced EMF survey company can assist in alleviating those concerns.<\/p>\n<p>Not having a survey performed by a trained professional will only allow those doubts to linger and in my experience will often negate the sale anyway. Also, too often I have seen people buy a meter and not interpret the readings correctly, leading them to believe in a hazard that does not necessarily exist.<\/p>\n<p>ScanTech&#8217;s goal is not to discourage economic trade \/ real estate transactions or complicate finding a suitable home, but to provide a service for consumers and commercial \/industrial entities who have a right to know and make informed choices about their safety and that of their families.<\/p>\n<p>Many of our initial contacts are directly from realtors who work for major real estate companies and are searching to find good answers for their concerned clients looking to buy a home near electrical powerlines.<\/p>\n<p><span style=\"color: #ff6600;\">Q. Do you fix electrical issues?<\/span><\/p>\n<p>A. No we cannot for several reasons including a potential conflict of interests. But we can sometimes verify the condition with a circuit analyzer and recommend several quality contractors in the area who can look at your wiring.<\/p>\n<p><span style=\"color: #ff6600;\">Q. Is elevated EMF dangerous?<\/span><\/p>\n<p>A. That is still a matter of opinion and controversy.<\/p>\n<p>It is not ScanTech&#8217;s role to be a fear monger, but neither will we hide the fact that certain studies suggest that elevated fields have been potentially linked to a variety of health issues including fatigue, headaches, dizziness, miscarriages, heart trouble, and cancer. (particularly leukemia in children)<\/p>\n<p>Also, some studies have found that elevated EMF may interfere with the body&#8217;s healing process such as with recovering breast cancer patients.<\/p>\n<p>ScanTech does not dispense any medical advice, but will instead provide survey information and resources for the client to make their own determination by comparing the readings to what is typically found in a home in that area.<\/p>\n<p><span style=\"color: #ff6600;\">Q. Are some individuals sensitive to EMF?<\/span><\/p>\n<p>A. According to some double blind studies, there are a small, but measurable and documented percentage of people that can at least detect, if not have adverse reactions to relatively low EMF fields. This threshold and effects vary according to the individual.<\/p>\n<p><span style=\"color: #ff6600;\">Q. What is a safe reading for EMF levels?<\/span><\/p>\n<p>A. That is dependent on a number of factors such as those mentioned above. The danger is that if a number is named as a safe limit, there may be someone out there who has a reaction at that level or below, or there is always a chance that even a relatively healthy person could suffer some effects. It is best to do a personal EMF survey and review your individual circumstances.<\/p>\n<p>EMF &amp; RF SAFETY LEVELS COMPARISON<\/p>\n<p><span style=\"color: #ff6600;\">Q. Can I shield myself or use a counter-EMF solution?<\/span><\/p>\n<p>A. That depends on what is causing the elevated magnetic fields and the distances involved. Fixing a point source wiring issue is almost always cheaper than shielding or using a magnetic shield cancellation (active shielding) setup. Shielding may be inappropriate for certain scenarios and counteracting a field can be tricky, plus both are expensive.<\/p>\n<p>In general, you need special materials for magnetic shielding to be effective. Most other metals and grounding techniques will only stop the electric &amp; RF fields depending on the design.<\/p>\n<p><span style=\"color: #ff6600;\">Q. Can I use a gadget advertised online to reduce EMF or dirty electricity?<\/span><\/p>\n<p>A. Often a client has purchased or is considering the purchase of some gadget or other device which claims to &#8220;clean&#8221; or otherwise negate the influence of EMF fields in their home or business and asks whether or not said Gadget X is actually beneficial. In the experience of operating ScanTech for over a decade, I have never reliably seen such a device do anything useful with respect to the client&#8217;s health concerns. (though in some cases they may believe it helps; perhaps as a placebo effect)<\/p>\n<p>This is not to say that there is nothing out there at all and never will be, but I have yet to see this proven to my satisfaction. In addition, in reading the specs and literature of said device, it is often found that the manufacturer&#8217;s claims and theory of operation tends towards a mixture of pseudo-science and facts taken out of context in such a manner that they appear to violate a number of physical laws. In some cases (as is pointed out in the next question) the use of these device can be potentially dangerous.<\/p>\n<p><span style=\"color: #ff6600;\">Q. Can I ground myself, the building, or a type of makeshift \/ pre-manufactured shield?<\/span><\/p>\n<p>A. As mentioned above, grounding a shield will only affect the electric component of an EMF field &#8211; not the magnetic portion. Grounding yourself will typically only protect against static electric shock &#8211; which is normally only a concern with anti-ESD (Electrostatic Discharge) procedures where wrist straps are used to protect delicate electronic and computer components while working on them.<\/p>\n<p>We cannot advise anyone outside of a licensed electrician to ground any part of a building, structure or electrical circuit as there is always the chance of shock, injury, death, fire or lightning damage from improper wiring or installation.<\/p>\n<p>Furthermore, I have had clients tell me that they have used questionable devices and \/ or protocols that attached to the alleged ground of an outlet and <strong>then been subsequently subjected to an electrical discharge \/ mild shock.<\/strong> Whether this was due to wiring problems, poor design or user error is not known, but ScanTech strongly discourages this approach without a qualified expert present.<\/p>\n<p><span style=\"color: #ff6600;\">Q. Isn&#8217;t there some kind of government limit on EMF fields here in the U.S.?<\/span><\/p>\n<p>A. There are some state ROW (Right of Way) standards that limit field strength from transmission lines, but it typically runs as high as several hundred milliGauss. There is no federal standard set; partially because EMF hazards are not officially recognized, but mostly because there is a chance that lawsuits (legitimate or not) would bankrupt the utility companies or make electricity too expensive to produce.<\/p>\n<p>Recently, certain states and municipalities have started setting limits on magnetic fields due to public concern, but so far they are the exception rather than the rule.<\/p>\n<p>EMF &amp; RF SAFETY LEVELS COMPARISON<\/p>\n<p><span style=\"color: #ff6600;\">Q. What do your surveys look like?<\/span><\/p>\n<p>A. Please see the page on <a href=\"http:\/\/www.scantech7.com\/emf-survey-testing-consultation-dallas-fort-worth\/\">EMF Survey Consultation Process and Procedure<\/a><\/p>\n<p><span style=\"color: #ff6600;\">Q. How much?<\/span><\/p>\n<p>A. This varies according to several factors, but our residential prices are reasonable and well within the range of any normal home inspection. Factors which may affect cost are:<\/p>\n<p>1) Extra distance or travel time beyond Dallas County. Mobilization expenses may apply for overnight stays. (partial payment or paid travel arrangements may also be required in advance)<\/p>\n<p>2) More detailed documentation for the EMF survey such as mapping, timestamping, GPS, laser measurement, photo \/ video logging, datalogging or creation of embedded text graphics, movies, 3D computer animation and special presentation packages,.<\/p>\n<p>3) Commercial \/ business property, areas with demanding environmental conditions or quality \/ calibration \/ certification standards (such as biomedical, aerospace, defense, military, R&amp;D) or unusual technical concerns.<\/p>\n<p>4) Possible health issues related to EMF.<\/p>\n<p>5) Extra time beyond the normal 1 &#8211; 2 hours spent on site or in researching \/ corresponding with the client, scanning extra areas not normally covered (such as in the walls &amp; floors) and troubleshooting.<\/p>\n<p>6) Rush jobs, and requesting a time slot that is already booked. May require partial payment in advance. In some cases, after \/ before hours charges may also apply.<\/p>\n<p>7) Payment other than immediately upon completion of the physical on site survey. Normally, there is an up to a 25% surcharge for billing unless other arrangements are made. Up to NET 15 can be considered for commercial clients.<\/p>\n<p>We are now set up to give a rapid quote if you can supply the following:<\/p>\n<p>The address, square footage, concerns \/ scope of work, timeline and the detail of report you require. (from verbal only to a detailed written report with graphics)<\/p>\n<p><span style=\"color: #ff6600;\">Q. What causes EMF &amp; Electric Fields?<\/span><\/p>\n<p>A. Magnetic fields occur when current is flowing through a conductor. The actual EMF field strength is dependent on the path of the conductor and distance. In general, a two wire conductor that is perfectly balanced will have a net resultant of 0.0 mG. This is because current flowing along the return path back to ground will have a magnetic field which opposes that of the &#8220;hot&#8221; side and so it will cancel out.<\/p>\n<p>In real life, it is nearly impossible to get such a perfect balance, so there is almost always some measurable field around any current flowing through an electrical path. For the two conductor scenario, the field strength will typically be an inverse square of the distance. At 2&#8242;, the strength will be 1\/4 of what it is at 1&#8242; which is an exponential decay at 1\/r^2 relationship.<\/p>\n<p>For a single wire conductor, (such as in ground currents) the EMF will decrease in an inverse proportion to the distance. At 2&#8242; feet, the strength will be 1\/2 of the reading at 1&#8242;. This is a linear 1\/r relationship.<\/p>\n<p>For coil wound transformers, (such as in an AC adapter plugged into a wall) the inverse cube will be observed or 1\/r^3. At 2&#8242;, the field strength will be 1\/9th strength of the measurement at 1&#8242;. (stronger rate of exponential decay also known as rapid falloff.<\/p>\n<p>Electric fields occur with a voltage potential between two points, EVEN WITHOUT current flowing. Properly grounded metal conduit will shield against electric fields.<\/p>\n<p><span style=\"color: #ff6600;\">Q. What bearing does frequency have on EMF?<\/span><\/p>\n<p>Quite a bit.<\/p>\n<p>Simply put, the frequency is the number of vibrations per second that an energy wave fluctuates, and it is inversely proportional to the wavelength. This dictates factors such as propagation, directionality and penetration strength into various materials. (including living tissue) There are also properties of resonance, wherein a structural material may start absorbing or redirecting a much higher percentage of energy due to wavelength matching.<\/p>\n<p>At higher frequencies (ultraviolet light and above) you begin experiencing the effects of ionizing radiation, which are EM waves traveling at such speed that they begin ripping the electrons out of molecular valence shells which can translate to genetic damage depending on exposure and intensity.<\/p>\n<p>The frequency can also totally change the nature and effects of the energy itself. Most of the energy we commonly experience is an EM wave of some type or another. Heat, light, radio, microwaves, etc. are all EMF, but at vastly different frequencies.<\/p>\n<p>The medium through which it travels also changes certain properties &#8211; sound is an energy that uses air as a medium as opposed to EM waves in low frequency radio. (a 10 KHz radio wave is not the same as a 10 KHz sound) Sound through the air also travels at a different speed than sound through water or metal, and it much slower than EM waves which travel at close to the speed of light.<\/p>\n<p>The frequency also dictates the alignment of the electric and magnetic fields. Above 30 MHz, both fields begin acting as a single cohesive wave.<\/p>\n<p>A DC electromagnetic or electric field (essentially a field at 0 Hz such as the Earth&#8217;s Magnetic Field or a normal bar magnet) is one in which there is no waveform or regular periodic fluctuation of energy. DC Magnetic Fields are not generally attributed as having negative health effects &#8211; and in fact, a number of alternative health experts actually recommend using magnets for healing and fitness.<\/p>\n<p>There may also be a relationship between Earth geomagnetic fields and phenomena such as telluric energy or ley lines which could influence health and quantum effects in a manner unconfirmed by science.<\/p>\n<p>Example Frequency Bands<\/p>\n<p>Earth DC Magnetic Field\u00a00 Hz<\/p>\n<p>Lowest end of brain waves\u00a01 Hz<\/p>\n<p>Theta brain waves\u00a06.66<\/p>\n<p>Schumann Resonances\u00a07.8 Hz<\/p>\n<p>Alpha brain waves\u00a07.85<\/p>\n<p>Beta brain waves\u00a015.7<\/p>\n<p>ELF Extremely Low Frequency 30 Hz &#8211; 300 Hz<\/p>\n<p>Upper end of brain waves\u00a045 Hz<\/p>\n<p>European Power Grid\u00a050 Hz<\/p>\n<p>North American Power Grid\u00a060 Hz<\/p>\n<p>VF Voice Frequency 300 &#8211; 3000 Hz (3 KHz)<\/p>\n<p>VLF Very Low Frequency 3 KHz &#8211; 30 KHz<\/p>\n<figure id=\"attachment_224\" aria-describedby=\"caption-attachment-224\" style=\"width: 300px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/scantech7.com\/wp-content\/uploads\/2015\/01\/EMF-Spectrum-by-ScanTech-www.scantech7.com_.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-224\" src=\"https:\/\/scantech7.com\/wp-content\/uploads\/2015\/01\/EMF-Spectrum-by-ScanTech-www.scantech7.com_-300x48.jpg\" alt=\"Electromagnetic Spectrum by ScanTech www.scantech7.com\" width=\"300\" height=\"48\" srcset=\"https:\/\/scantech7.com\/wp-content\/uploads\/2015\/01\/EMF-Spectrum-by-ScanTech-www.scantech7.com_-300x48.jpg 300w, https:\/\/scantech7.com\/wp-content\/uploads\/2015\/01\/EMF-Spectrum-by-ScanTech-www.scantech7.com_-1024x164.jpg 1024w, https:\/\/scantech7.com\/wp-content\/uploads\/2015\/01\/EMF-Spectrum-by-ScanTech-www.scantech7.com_-768x123.jpg 768w, https:\/\/scantech7.com\/wp-content\/uploads\/2015\/01\/EMF-Spectrum-by-ScanTech-www.scantech7.com_-1536x245.jpg 1536w, https:\/\/scantech7.com\/wp-content\/uploads\/2015\/01\/EMF-Spectrum-by-ScanTech-www.scantech7.com_-2048x327.jpg 2048w, https:\/\/scantech7.com\/wp-content\/uploads\/2015\/01\/EMF-Spectrum-by-ScanTech-www.scantech7.com_-1568x250.jpg 1568w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-224\" class=\"wp-caption-text\">Electromagnetic Spectrum by ScanTech www.scantech7.com<\/figcaption><\/figure>\n<p><span style=\"color: #ff6600;\">Q. On the website page,\u00a0http:\/\/www.scantech7. com\/EMF_RF_Electric_Field_ Safety_Levels.htm , the following is stated: Cancer researchers concerned with recent power line issues are coming up with many reports on oncological effects of very low-level 1 mG ELF electromagnetic fields.<\/span><\/p>\n<p><span style=\"color: #ff6600;\">Leukemia studies which link low level EMF fields 2 &#8211; 4 mG<\/span><\/p>\n<p><span style=\"color: #ff6600;\">So my question is this: If the earth&#8217;s magnetic field is 58 microTesla, or about 580 milliGauss, at 50 degrees latitude (London), how can &gt;2 &#8211; 4 mG be measured to cause cancer? We are all getting over 100 times that every day. Or I am not understanding this correctly.<\/span><\/p>\n<p>This is an understandable point of confusion. The difference is that the ELF fields are artificially produced AC (alternating current) fields such as 50 Hz \/ 60 Hz which have a frequency \/ phase component to them.<\/p>\n<p>The Earth&#8217;s magnetic field on the other hand is DC , (static) not AC . This is for the most part a non-varying or very slowly varying (quasi-static) field in amplitude, but there is no real frequency component associated. Different organisms react differently in either more intense, or greatly decreased DC earth fields. Some are not particularly affected and others experience significant physiological \/ biochemical shifts. (it is believed to be crucial to native &#8220;instincts&#8221; for such things as navigation)<\/p>\n<p><span style=\"color: #ff6600;\">Q. Can magnets (DC magnetic fields) heal or help in some way?<\/span><\/p>\n<p>A. While this is a matter of conjecture in terms of <strong>general use by laymen<\/strong>, many professionals and organizations use them with no reported ill effects. Recently, even the FDA allows magnetic therapies to claim &#8220;pain relief&#8221;, &#8220;increased circulation&#8221;, and other benefits if that tells you anything.<\/p>\n<p>And there ARE commercially produced biomedical devices approved by the FDA which use specially pulsed magnetic fields produced by Helmholtz coils to speed the healing of bone fractures.<\/p>\n<p>The most common families of magnet materials today are ones made out of Aluminum-Nickel-Cobalt (Alnicos), Strontium-Iron (Ferrites, also known as Ceramics), Neodymium-Iron-Boron (Neo magnets, sometimes referred to as &#8220;super magnets&#8221;), and Samarium-Cobalt. (The Samarium-Cobalt and Neodymium-Iron-Boron families are collectively known as the Rare Earths.)<\/p>\n<p>For best results, there are specific magnet strengths (measured in Gauss) and application methodologies practiced by various medical and alternative healing practitioners. ScanTech cannot make any specific recommendations except that you do your own research, try to document results with hard data, and beware of anyone making exceptionally claims or charging large amounts of money.<\/p>\n<p>Be aware, that getting good empirical data can be difficult even for experienced researchers who are well grounded in bio-magnetic medicine, statistics, etc. And even if someone has impressive credentials and references, that does not mean their solution will be right for you.<\/p>\n<p><span style=\"color: #ff6600;\">Q. Can&#8217;t I just buy a meter and measure it myself?<\/span><\/p>\n<p>A. It is likely that you won&#8217;t buy the right EMF meter for your needs. A GOOD, true RMS, 3-axis digital non-frequency weighted and calibrated reference EMF meter will run at least several hundred dollars &#8211; considerably more than getting a proper EMF survey from ScanTech.<\/p>\n<p>Furthermore, many of the popular meters that consumers purchase are just downright inaccurate (I have seen by a factor of over 50 times) and are not appropriate for a professional EMF home inspection. My blog at discusses a very interesting case study of this issue at:<\/p>\n<p><a href=\"https:\/\/emfsurvey.com\/using-the-wrong-emf-meter-for-home-inspections-a-case-study-in-professional-judgment\/\">https:\/\/emfsurvey.com\/using-the-wrong-emf-meter-for-home-inspections-a-case-study-in-professional-judgment\/<\/a><\/p>\n<p>in which two meters (both Trifield 100XE models) that were recently purchased gave wildly varying results and could have potentially misled the consumer to the point of making a serious mistake in evaluating a property \/ real estate transaction if they had not contacted ScanTech.<\/p>\n<p>I am aware they are rated well by Amazon, but none of the reviews that I looked at mentioned comparing the accuracy of the meter against any sort of known reference. While I think well of the manufacturer of the meter in general, I personally contacted an electrical engineer who worked for the company as I was looking for the frequency weighting chart, and I was informed that not only was it unavailable for this meter, this particular model is NOT considered suitable for a proper professional survey by the maker themselves which should tell you something.<\/p>\n<p>I do use the Natural EM version of the Trifield meter, but only because I sometimes find the analog display useful for detecting fluctuations. So it isn&#8217;t necessarily useless, but I have seen influence people walk away from properties when there was no cause for alarm.<\/p>\n<p>Also, the EMF meter apps that you can now download for Android and iPhone ONLY measure the DC geomagnetic field of the Earth which is an entirely different magnetic field than what you get from 60 Hz power lines and the harmonics. It is fun and educational to play with, and while I have it on my phone, I never use it for actual EMF testing as I have more professional gear available. The reason the sensor is even on there is so that the phone can sense orientation with respect to the ground and adjust the view screen accordingly.<\/p>\n<p>Doing a proper survey means more than just reading a meter; it is having the experience and professional judgment to determine the accuracy of the equipment used, finding the source of the magnetic field, the underlying cause and likelihood of mitigation if any.<\/p>\n<p>In addition, there is other equipment that we have on hand such as geomagnetometers, (for Earth Magnetic Field measurements) RF meters, digital Geiger counters, ion counters, etc. which are often called into service to address various onsite issues and concerns.<\/p>\n<p>Our newest RF meter is a spectrum analyzer which can graphically measure, datalog and analyze the broad EM spectrum which comprises nearly 100% of all wireless and data communications. It is FAR more accurate than typical broadband RF meters which can be off by as much as 1000 X due to frequency variations &#8211; particularly in the evaluation of exposure limits.<\/p>\n<p><span style=\"color: #ff6600;\">Q. Is your meter accurate?<\/span><\/p>\n<p>A. The primary EMF AC gaussmeter used has NIST traceable certification and is guaranteed by the manufacturer to stay within calibration for ten years. This meter is also cross-checked against other EMF meters for additional corroboration on accuracy.<\/p>\n<p>There are some articles I have written discussing meter accuracy which are discussed here:<\/p>\n<p><a href=\"https:\/\/emfsurvey.com\/using-the-wrong-emf-meter-for-home-inspections-a-case-study-in-professional-judgment\/\">https:\/\/emfsurvey.com\/using-the-wrong-emf-meter-for-home-inspections-a-case-study-in-professional-judgment\/<\/a><\/p>\n<p><a href=\"https:\/\/emfsurvey.com\/gaussmeter-emf-meter-instrument-calibration-safety-information-importance\/\">https:\/\/emfsurvey.com\/gaussmeter-emf-meter-instrument-calibration-safety-information-importance\/<\/a><\/p>\n<p><span style=\"color: #ff6600;\">Q. What is the advantage of using a reference grade triple axis meter?<\/span><\/p>\n<p>A. It is far more accurate due to the fact that it measures fields in all 3 dimensions as opposed to only one at a time. For instance, you may have a high reading in the x direction and a low one in the y direction. If you only happen to pay attention to one axis, then you are not getting the true reading and may either miss an issue, or be misled into thinking there is one.<\/p>\n<p><span style=\"color: #ff6600;\">Q. Well, I can get that meter and still do a survey, right?<\/span><\/p>\n<p>A. Certainly, but our surveys are typically less expensive than buying a quality meter. In addition, we use a specially designed rig to maintain the meter a preset height (1 meter according to IEEE standards for EMF testing) above the ground at all times. This makes our surveys inherently more accurate than an EMF meter that is hand held.<\/p>\n<p>And reading a meter is only a small part of the equation. The years of experience that ScanTech has in residential, commercial and industrial evaluations of over which include over 1,000 EMF surveys will save you a great deal of time and aggravation in figuring out whether you have a problem and the most cost effective means of resolving it.<\/p>\n<p>Our background covers many disciplines and we are the best qualified company in this region to do risk assessment and mitigation consultation. Again, we have other equipment on hand to help troubleshoot and analyze virtually all of the energy fields in your environment.<\/p>\n<p><span style=\"color: #ff6600;\">Q. The EMF \/ RF meter that I bought doesn&#8217;t agree with yours \/ a third party survey company \/ etc. What is going on? Whose meter is more accurate?<\/span><\/p>\n<p>A. This can be a very tricky question to answer as meters do not all agree with each other due to differences in construction and calibration. For EMF meters, things to consider are single axis vs. triple axis, true RMS reading, digital vs. analog, accuracy, calibration, frequency range and weighting. Most lower quality meters will GENERALLY agree with each other within 1 &#8211; 2 milliGauss except in the area of single axis vs. triple axis as individual magnetic vector components can vary wildly from each other. Better quality meters will agree within about +\/- 0.2 milliGauss.<\/p>\n<p>While many EMF meters are calibrated to 60 Hz, the frequency weighting from one meter to another can cause disparate readings to be observed depending on the exact power harmonics and frequencies mixed in with the 60 Hz.<\/p>\n<p>RF meters can vary even more due to the fact that radio frequency energy is very difficult to measure accurately with the sharp differences that antenna design, location and orientation can make. Getting a reading within 3 dB (which is a 50 % variation) of the true value is actually considered quite good, as RF is measured more degrees of magnitude (logarithmic powers of 10) rather than in a linear fashion.<\/p>\n<p>Regardless, we prefer to focus on the sources of elevated EMF and find solutions rather than worry about meters agreeing with each other.<\/p>\n<p><span style=\"color: #ff6600;\">Q. Can I rent the meters from you\/someone else?<\/span><\/p>\n<p>A. To rent our equipment would require a deposit in the amount of the gear + all fees and potential loss of use surcharges. In other words, this would be much more expensive than just having us do it, and ScanTech is not set up with a legal rental agreement of any kind, so renting equipment is completely against policy.<\/p>\n<p>We come with the meter &#8211; absolutely no exceptions.<\/p>\n<p>As for renting from someone else, we always purchase our own equipment outright so we have no idea who to recommend, nor would we want to be liable for referring you to someone that didn&#8217;t satisfy your needs. Finally, we feel that it would be a disservice to our clients to use this sort of gear unaided as it is very easy to misread meters and come to the wrong conclusions about local energy fields and make erroneous, expensive or dangerous mistakes as a result.<\/p>\n<p>However, if for some reason time, budget or other factors make it unfeasible for us to come on site, then the consultation described in the next heading may be of aid to you.<\/p>\n<p><span style=\"color: #ff6600;\">Q. I already have my own EMF meter \/ meters &#8211; what can you tell me about the readings I get?<\/span><\/p>\n<p>A. If we are not on site witnessing the measurements ourselves or how the EMF meter is being used, then we cannot take responsibility for any actual risks, nor can we guarantee how well our advice will apply to your particular situation. Also, we may or may not own your particular brand of meter and be familiar enough with it&#8217;s operation and\/or peculiarities to be as authoritative as we would like. Also, see above where some meters can be blatantly inaccurate.<\/p>\n<p>We do offer consulting services for out of area residential clients &#8211; please see above.<\/p>\n<p>We offer also COMMERCIAL phone and email consultation &#8211; prices vary depending on the nature of the project and research required.<\/p>\n<p>In either case, it is often useful and even essential to send wiring diagrams, maps, a short narrative and anything else which may be relevant to your issue. If there is excessive documentation or research required, (more than a few pages or a few minutes) then other consulting fees may be applicable.<\/p>\n<p>We will respond as soon as possible. (within a day during a normal business week)<\/p>\n<p><span style=\"color: #ff6600;\">Q. Can you recommend an EMF meter to me?<\/span><\/p>\n<p>A. We can recommend a particular EMF meter \/ gaussmeter for your needs for a generally small consulting fee.<\/p>\n<p>MORE INFORMATION ON EMF TESTING AND INSPECTION TOPICS FOUND ON THESE WEBSITES<\/p>\n<p>Blog on EMF Testing, Power Lines &amp; Safety Levels (and some information on indoor air quality testing \/ radon testing as well)<\/p>\n<p><a href=\"http:\/\/emfsurveydallas.com\/\">http:\/\/emfsurveydallas.com\/<\/a><\/p>\n<p>More detailed technical information on magnetic, electric and RF fields including smart meters<\/p>\n<p><a href=\"http:\/\/emfinspectordallas.com\/\">http:\/\/emfinspectordallas.com\/<\/a><\/p>\n<p><span style=\"color: #ff6600;\">Q. Can I buy an EMF meter in the Dallas &#8211; Houston &#8211; Austin &#8211; Fort Worth area?<\/span><\/p>\n<p>I get asked this from time to time and I don&#8217;t know any stores in these metropolitan areas where you can buy a quality 3 axis AC gaussmeter \/ EMF meter \/ high frequency RF meter whose accuracy I could trust.<\/p>\n<p>If you are interesting in buying one online, for a small consulting fee we may may be able to suggest a model and vendor right for you.<\/p>\n<p>Please note that by accepting consulting in this manner you agree to hold ScanTech harmless in connection with any information given, whether explicit or implied through misinterpretation, implementation, misuse or other consequences by the paying client or any other third parties.<\/p>\n<p>Copyright ScanTech 2002-2021<\/p>\n","protected":false},"excerpt":{"rendered":"<p>EMF Testing Surveys \/ RF Measurement Commercial \/ Industrial Inspection &amp; FAQ Legacy Reference Page * Effective January 1st, 2019 ScanTech no longer performs residential testing OR consulting for homeowners and tenants &#8211; all services are COMMERCIAL ONLY. Instead I will redirect you to a page for resources to other companies and common questions &#8211; &hellip; <a href=\"https:\/\/scantech7.com\/emf-testing-surveys-measurement-inspection-facts\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">EMF Safety and Survey Testing &#8211; RF Measurements &#8211; Commercial Inspection &#038; FAQ Page<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":53,"comment_status":"open","ping_status":"open","template":"","meta":{"footnotes":""},"wf_page_folders":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/scantech7.com\/wp-json\/wp\/v2\/pages\/2980"}],"collection":[{"href":"https:\/\/scantech7.com\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/scantech7.com\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/scantech7.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/scantech7.com\/wp-json\/wp\/v2\/comments?post=2980"}],"version-history":[{"count":4,"href":"https:\/\/scantech7.com\/wp-json\/wp\/v2\/pages\/2980\/revisions"}],"predecessor-version":[{"id":3134,"href":"https:\/\/scantech7.com\/wp-json\/wp\/v2\/pages\/2980\/revisions\/3134"}],"wp:attachment":[{"href":"https:\/\/scantech7.com\/wp-json\/wp\/v2\/media?parent=2980"}],"wp:term":[{"taxonomy":"wf_page_folders","embeddable":true,"href":"https:\/\/scantech7.com\/wp-json\/wp\/v2\/wf_page_folders?post=2980"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}