EMI-EMC-EMF Engineering for Compliance, Health, Safety, and Design Integrity

Site Surveys, Inspections, and Investigations with Solutions

EMF-EMI New Construction Design Consulting Services

ISO 17025 Certified Calibrated Surveys to National and International Standards

In Portland, Eugene, and beyond, ELEXANA helps companies and facility teams evaluate workplace electromagnetic environments where an employee, contractor, visitor, or technical role involves an implanted medical device, wearable medical electronics, or other sensitive equipment considerations. ELEXANA can test the surrounding EMF/RF, magnetic-field, EMI, and power-quality conditions, and may also perform non-compliance functional interference testing to observe how a specific device or device type behaves near workplace electrical infrastructure, motors, transformers, wireless systems, industrial equipment, laboratory instruments, and other potential field sources. This work is intended to support employer safety review, facilities planning, engineering troubleshooting, and practical risk-reduction decisions.

OSHA-Certified

Certified and Trained in Grounding and Bonding Testing per NFPA 70E®

IEEE Member No. 97341915

IEEE Member of the EMC Society

EMCpass.

Why Be Concerned About EMI?

Electromagnetic interference (EMI) causes latency, malfunctions, and sluggish performance in fine electronics such as computers, medical devices and equipment, pacemakers, financial trading platforms, graphic software, and recording equipment.

With the exponential increase of wireless technologies in Portland, Oregon, EMI has become common vernacular. Line noise, harmonic transients, dirty electricity, RFI (radio frequency interference), and electromagnetic coupling are synonyms.

How Do You Know It’s EMI?

An easy way to tell if you have an EMI issue is to observe the presence of any:

• Overheating of any metal enclosures. Are enclosures very hot to the touch? (Inductive Heating)

• Motor failures from overheating. (Voltage Drop)

• Fuses blowing for no apparent reason (Inductive Heating and Overload)

• Static or interference on sound or voice communication (Harmonic Line Noise)

• Electronic equipment shutting down for no apparent reason (Voltage Distortion)

• The computer malfunctions or locks up. (Voltage Distortion)

• Flickering fluorescent or LED lights (Transformer Saturation)

• Blinking incandescent lights (Transformer Saturation)

What are the Additional Benefits Gained as a Result of Reducing EMI?

• Reduced Electrical Consumption

• Cooler Equipment

• Longer Lifetime for Equipment

• Lowered Utility Bill

• EMF Reduction for a Safer and Healthier Environment

• Surge Protection for Your Entire Facility

• Improved Screen Quality

• Improved Audio

• Phase Correction, Which Improves Efficiency and Performance

• Cleaner Power Resulting from Transient Harmonic Attenuation

How Does EMI Occur?

Metal, of course, is a conductor of electromagnetism. If you have a strong electromagnetic field near a metal wire with an electrical current and/or voltage, the nearby electromagnetic field will magnetically converge, couple, and ride along with the original current. Imagine a surfer hopping onto his surfboard to ride that perfect wave.

The interference that will occur on an electronic is relative to frequency, the V/m (Volts per meter), and the magnetic flux of the intruding EMF.

What is EMF Testing?

An EMF Testing, called an EMF Measurement Survey, is a non-invasive assessment of the electromagnetic fields within a residential or commercial property. It involves a systematic method for measuring and recording non-ionic radiation emitted by the Earth and by various human-made technologies. Measurements are monitored and recorded during a relatively brief period or logged over a longer designated period.

An EMF survey includes a complete assessment of the frequency bandwidth, size, shape, strength (measured as power density in watts per square meter, voltage per cubic meter, or flux density in nanoTeslas or milliGauss), behavior (is the field moving or is it relatively stationary), quality (are there other fields coupled onto the targeted, measured field and what are their characteristics), and the identification of the source-point(s) of each particular EMF field.

An EMF survey is an assessment of the defining characteristics of each electromagnetic field on a property and should include the following:

• Frequency bandwidth within the electromagnetic spectrum. This helps determine attributable effects, aspects, and applications.

• Size dimensions.

• Shape. Rarely is an EMF field in the shape of a box.

• Strength is determined by the relative power density divided by the distance from the source point. The strength of a field is measured, in a unit appropriate to the particular field, in either watts per square meter, volts per meter, or flux density in nanoTeslas or milliGauss

• action; determination of the field’s movement or lack thereof.

• Quality: is the field unadulterated or coupled with other electromagnetic fields from the same or different source points. (Assess each of the coupling fields.)

• Identification of the source point (s) of each particular EMF field.

What is the Purpose of an EMF Measurement Survey?

• Assess a property to develop solutions for the health and safety of its occupants.

• Assess the environment to remediate electromagnetic interference causing electronic malfunctions.

• Assess property to design shielding or other mitigation solutions

• Assess a building or new construction for the potential of geopathic structural damage

• Help educate the client and answer all EMF-related questions in layman’s terminology

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