EMF Meters

EMF meters, used to indicate the overall intensity of a range of  EMFs, are available with a wide range of sensitivities, frequency responses and features. For home or office use, simple broadband meters are often sufficient for an initial survey. Generally two different types of meters are required; an EMF meter for ELF fields and a broadband meter for RF fields, although these are sometimes combined into one instrument.

The EMF meter is used to measure the magnetic fields associated with ELFs (e.g. powerline frequencies) whilst the RF broadband meter should measure the voltage gradient or power density of RF fields The RF meter should be capable of measuring the pulsed RF power produced by mobile phones and masts, cordless DECT phones and  wireless networks in addition to the continuous power of less complex RF sources such as radio and TV transmitters. Inexpensive examples of both types of meter, or a combined meter,  may be purchased on this website. 

For more accurate and/or extensive surveys, more sophisticated instruments are required. For instance, simple meters generally provide only a one-dimensional field reading (unless multiple readings are taken and some calcualtions are made) whereas triaxial meters provide a true three-dimensional field measurement. Meters with a greater frequency range may be required to measure less-common EMFs.  Other, more sophisticated instruments such as spectrum analyzers and active directional antennas may be required if the source of an EMF is to be localized. Such  instruments are used by EMF UK in their  surveys

The EMF meter shown below is the ELF-ZONE indicator. It is extremely easy to use and provides an indication based on precautionary limits  for long term chronic exposure to extremely low frequency EMFs from powerlines, faulty wiring and domestic appliances. It does not however measure EMFs from radio frequency sources such as mobile phone masts and microwave ovens. A guide to carrying out an EMF survey is included.

Specifications:-

Indicators:

    SAFE  0 to 2.5 milli Gauss
    CAUTION  2.5 to 7milli Gauss
    DANGER 8 milli Gauss or higher

Requires one 9v battery.

(Limits may also be expressed in micro Teslas. One milli Gauss is equivalent to 0.1 micro Tesla).

The Electrosensor is a compact (115(L) x 45(W) x 20(H)mm) ELF EMF meter suitable for checking EMFs from overhead power lines, household wiring and appliances etc.  Its small size allows it to be carried almost anywhere and used without attracting attention. Please note that It does not however measure EMFs from radio frequency sources such as mobile phone masts and microwave ovens for which an RF EMF meter is required (below). A guide to carrying out an EMF survey is included.

Specifications:-

Specifications:-

Frequency response    300MHz to 3GHz

The ED25G ELF/RF broadband meter is shown below. It is essentially a combination of two meters - an ELF meter and a RF broadband meter .In ELF mode it will measure extremely low frequency EMFs from powerlines, faulty wiring and from domestic appliances. In RF mode it will measure broadband power density over the range 100MHz to 3GHz - a range which includes all the common frequencies found in the home, such as mobile phones and their masts, cordless DECT phones and wireless networks.  The meter is compact in size and extremely easy to use with only three buttons - on/off, mode and hold. A backlight can be switched on or off as required. Instructions for use are included. 

Frequency response: 100MHz to 3GHz (RF meter),

50Hz to 10KHz (ELF Gaussmeter)

Specifications:-

Frequency response 1: 2.45GHz (2450MHz)
Frequency response 2: 50MHz to 3.5GHz  (3500MHz)

Measurement range:  .01mW/cm2 - 2.700mW/cm2  
                                         (100mW/

The ED65 is an easy-to-use meter with a very useful frequency response of  100MHz to 6GHz . This range includes mobile phones, DECT, wifi (2.4GHz and 5GHz), CCTV cameras (1.2GHz, 2.4GHz and 5.6GHz) and video senders.  It does not however measure ELF fields from power lines etc.




Specifications:-


Frequency  response: 100MHz to 6GHz

RF Peak power density measurement 1.5µW/m² to 0.58W/m²


(Please see here for full specifications)

New Product

The ED75 is an easy-to-use meter which adds ELF measurements to the ED65 above; alternatively it can be considered similat to the ED25G above with an extended upper frequency range. It can measure RF fields from mobile phones and masts, DECT phones, 2.4GHz wifi,  5GHz wifi etc. Also ELF fields from power lines, household wiring and appliances. In short, almost all common household EMFs - and it achieves this with only an on/off switch and two buttons! This is expected to become EMF UK's most popular meter.




Specifications:-


Frequency response: 100MHz to 6GHz.(RF Meter)
50Hz to 10kHz (ELF Gaussmeter)

RF Peak power density measurement 1.5µW/m² to 0.58W/m²
ELF Sensitivity: 1-500mG  (0.1 to 50 µT)


(Please see here for full specifications)

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The ELF-3030B is an exceptionally sensitive, high quality ELF meter. It can measure both the electric and magnetic components of  EMFs with a sensitivity to magnetic fields one hundred times greater than many less expensive meters. It  is particularly suited to those (such as the Electrically Hypersensitive) who wish to reduce their EMF exposure to the lowest possible levels. Please note however, that its extreme sensitivity makes it unsuitable for taking measurements directly beneath 275kV or 400kV overhead power lines. Also, it is an ELF meter - it does not measure RF or microwave fields - these require a RF broadband meter.

Specifications:-

Frequency response 16Hz to 2,000Hz
           

Sensitivity:
magnetic  1nT to 2,000nT (0.01mG to  20mG)
electric  1V/m to 2,000V/m

(Please see here for full specifications)

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The ELF-3830B is an exceptionally sensitive, high quality ELF and VLF meter. Similar to the ELF3030B above, this meter has an extended frequency range and measures the fields from VLF sources such as CFLs (compact fluorescent lights) and switch-mode power supplies in addition to those from household wiring and appliances. It is particularly suited to those (such as the Electrically Hypersensitive) who wish to reduce their EMF exposure to the lowest possible levels. Please note however, that its extreme sensitivity makes it unsuitable for taking measurements directly beneath 275kV or 400kV overhead power lines. Also, it is an ELF and VLF meter - it does not measure RF or microwave fields - these require a RF broadband meter.

Specifications:-

Frequency response 16Hz to 100,000Hz


Sensitivity:
magnetic  1nT to  2,000nT (0.01mG to 20mG)
electric 1V/m to 2,000V/m

(Please see here for full specifications)

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The ED85EX  RF broadband meter currently has the widest frequency range of any of our meters (up to 10GHz) and can detect the newer 5.6GHz wifi, wireless CCTV cameras and video senders, in addition to the usual RF sources such as mobile 'phones and wireless networks. It also operates on the amateur radio and CB bands.  The meter features a 50 ohm SMA connector for connecting an external antenna (a simple whip antenna centred on 2.4GHz is included) or other suitable RF source and has simple three buttton operation and a backlight. It does not however measure ELF (power frequency) fields as the ED25G does.

Meter Specifications:-

Frequency response:  1Mhz to 8GHz (useful to 10GHz).

Peak power density measurement 1.5µW/m² to 0.58W/m²



(Please see here for full specifications)

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This item,  the LPDA 1810,  is used to enhance the ED85EX above.  It will both extend the upper frequency response to 10GHz (please note however that the lower frequency limit is then increased to 1.8GHz) and provide a directional response. This directional response is very useful when trying to track down the source of transmitters such as mobile phone masts, DECT cordless phones and wifi transmitters.  Please note that this antenna has been specifically designed for use as a receiving antenna for the ED85EX. The antenna may be used on other devices fitted with a 50 ohm SMA connector; however  the advice of a suitably competent person  should be sought before doing so.

Antenna Specifications:-

Frequency response      1.8GHz to 10GHz

Dimensions (inc. connector):     115mm x 60mm                 




(Please see here for full specifications)

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The meter below is the EHF32D RF analyzer. This meter contains the essential ingredients for assessing mobile phone masts with its frequency range encompassing all three UK frequency bands and a directional antenna to assist in isolating signals from a particular mast. It will also assess EMFs from wifi, microwave ovens and mkany wireless cameras. Its frequency range does not include TETRA communications however. Nor does it measure EMFs from overhead lines or household wiring, for which a ELF EMF meter is required.

Specifications:-

Frequency response  800MHz to 2.5GHz (2500MHz)

Sensitivity   1 to 1999 µW/m²



(Please see here  for full specifications)

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The TM-195 is a tri-axial (sometimes referred to as isotropic) meter. Tri-axial meters are easy to use and give consistent results.  The frequency range of this meter encompasses mobile phone masts, wifi, TETRA, VHF and UHF. Other features of this meter, such as its data memory, a wide choice of units and max/average modes combine with the consistency of results to make this an excellent meter for carrying out  comprehensive RF EMF surveys. Please note that it does not however measure EMFs from ELF sources such as overhead lines or household wiring, for which a ELF EMF meter is required (below).

Specifications:-

Frequency response 50MHz to 3.5GHz  (3500MHz)

Sensitivity  38mV/m  to  11V/m (11000mV/m)



(Please see here  for full specifications)

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The TM-192 is a tri-axial  meter. Tri-axial meters are easy to use and give consistent results. Other features of this meter, such as its data memory and choice of units  combine with the consistency of results to make this an excellent meter for carrying out  comprehensive ELF EMF surveys on domestic, commerical and light industrial premises. Please note that it does not however measure EMFs from sources such as mobile phone masts, for which an RF EMF meter is required (above).

Specifications:-

Frequency response 30Hz to 2000Hz  

Sensitivity:  
magnetiic    10nT to 200 µT (0.1mG to 2000mG)


(Please see here  for full specifications)

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The EMF-828 is a tri-axial  meter with a spearate probe connected by a cable. Tri-axial meters are easy to use and give consistent results. A particular feature of this meter is its maximum reading of 2uT or 20 Gauss; combined with the separate probe this is a meter well-suited to testing ELF EMF against occupational ICNIRP standards on commerical and industrial premises. Please note that it does not however measure EMFs from sources such as mobile phone masts, for which an RF EMF meter is required.

Specifications:-

Frequency response 30Hz to 300Hz  

Sensitivity:  
magnetiic    10nT to 2000 µT (0.1mG to 20,000mG)


(Please see here  for full specifications)

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This meter, the EHF35C,  is very well suited to the measurement of radiation from mobile phone masts. The frequency response neatly encompasses the three mobile phone bands. A switch allows for a choice of peak or average measurement modes. The supplied log-periodic (directional) antenna  helps to evaluate individual contributions from different masts. The audio function further assists in gauging which mast (or DECT base station, wireless router etc.) may be predominant. at the point of measuremet.  The EHF35C is the 'entry-level' model of a range of  professional quality RF Analyzers - please contact EMF UK with your requirements if you would like further  information about  this range of instruments.

Specifications:-

Frequency response    800MHz to 2.5GHz

Measurement range    0.1 to 1999uW/m²



(Please see here for full specifications)

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All EMF Meters are available from the  EMF UK Shop

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