Choosing a meter can be a simple task, once you decide what you need. Since no one meter can "do it all" the first and most important question you must answer for yourself is...

In a way, you need to know what you are looking for before you can know what type of meter you will use. The best meter for the job will be sensitive to the type of EMF radiation you wish to measure and give you the type of information which is useful to you.

Listed below are some additional questions which will help you refine your decision:

• Do I want to measure magnetic fields? Electric fields? Radiofrequency fields?
  
• What frequencies am I most interested in: DC? 60 Hz? ELF? VLF? Microwave?
  
• How sensitive do I need my meter to be?
  
• How accurate do I need it to be? (higher accuracy = higher price)
  
• Do I prefer analog (best for surveys and readings "on the go") or digital (higher accuracy)?
  
• Do I need three axis, or can I get by with single axis?
  
• What special features do I want: audible signal? Multiple capability? Portability? Cost?
• What am I going to do with the information? Locate "hot spots"? Trace faulty circuits? Present findings to others?
  

The following chart will help you compare the various meter options. Of course, if you still can't decide, e-mail our technical staff and we will be happy to assist you.

AC GAUSSMETERS

 

Cat. #	Meter Name	Freq. Range (Hz)	Useful Range (mG)	Digital or Analog	No. of Axes	Accuracy/ Sensitivity	Typical Applications
A111	Single Axis Digital	30 - 400	0.1 - 199.9	D	S	M / M	accurate ELF readings, powerlines, appliances
A121	E.L.F. Zone	20 - 10000	0.25 - 8	LED	S	L / M	Locate "hot spots", paranormal work, very low cost
A123	EMF Listener Headset	-	-	audio	S	-	allows you to hear the magnetic field
Not Available from LESS EMF	CellSensor	50/60	0-50	A & audio	S	M / M	home/office surveys, school projects
A150	Trifield Meter	50 - 100k	0 - 3.0 0 - 100	A	T	M / M	general purpose survey, highly recommended
A154	Personal EMF Alarm	50 - 100k	0 - 3.0 0 - 100	A	T	M / M	meter and audible alarm for AC magnetic, AC electric, and RF fields
A155	Trifield Ext. Range	5 - 100k	0 - 3.0 0 - 100	A	T	M / M	general surveys, esp. when low frequencies suspected
A134-P	MultiDetector II	5 - 400k	0.1 - 1000 mG
Not Available	MultDetector Professional	5 - 400k	.01 - .1 .1 - 1 1 - 10 10 - 100	LED	S	M / H	very sensitive, does ELF and VLF separately, does both electric field and magnetic field
A171	3 Axis Digital	25 - 1000	0.1 - 511	D	T	H / H	high accuracy readings & surveys
A172	Professional 3 Axis Digital	20 - 2000	0.1 - 1999	D	S / T	H / H	switchable single/triple axis, best quality
A1181	Magcheck Sensor	25-3000	.1 mG - 700G	ACV	S	H / H	Probe only, outputs AC voltage, needs DMM
A175	Magnetic Pickup	?	?	ACV	S	? / L	Probe only, outputs AC voltage, needs DMM
A460	Strong Field AC Gaussmeter	30-300	0.1 - 19,990	D	S	M / L	checks very strong AC magnetic fields
A480	Digital Combination Meter	16-2000	0.01 - 20.00	D	S	H / H	easy, sensitive, accurate measuements of both Electric and Magnetic fields
A482	Professional Combination Meter	5Hz -100kHz	0.001 - 20.00	D	S	H / H	highly sensitive and accurate for E and M fields, AC & DC outputs
A491	Datalogging 3-Axis GaussMeter w/ PC Interface	30 -2000	0.01 - 1999	D	T	H / H	high sensitivity, 3-axis, Datalogging, and PC Interface
A1100	Commercial AC Magnetic Field Meter	50 or 60	0.01 - 1999	D	S	H / H	narrow bandpass, filters out harmonics
A1160	Bandpass AC GaussMeter	50 or 60	0.1 - 199.9	D	T	H / M	narrow bandpass, filters out harmonics

A = Analog
D = Digital
DMM = attaches to your digital multimeter
LED = Light emitting diode
L, M, H = low, medium, high
S = Single axis
T = Triple axis

DC (& AC/DC) GAUSSMETERS

 

Cat. #	Meter Name	Freq. Range (Hz)	Useful Range (Gauss)	Digital or Analog	No. of Axes	Accuracy/ Sensitivity	Typical Applications
A141	DC Magnetic Field Probe	DC - 5 kHz	1-1000G DC, 1-700G AC	DCV	S	M / L	Low cost DC gaussmeter probe, requires DMM
A142	Pocket Magnetometer	DC	-20 - +20	A	S	M / M	measure permanent & residual magnetism, other ranges available
A143	AC/DC Gaussmeter	DC - 5 kHz	1-1000G DC, 1-700G AC	D	S	M / L	Low cost AC/DC Gaussmeter, great for checking packages for magnetic fields prior to shipping
A151	Natural EM Meter	DC	.0025 - 1.00	A	T	M / M	meteorological, geological, & paranormal studies
A3100	Geomagnetometer	DC	0-.002 0-.020 0-.200 0-2.000	D	S	H / H	measure Earth's field & weak DC fields, DCV output
A1120	DC Viewer Card	DC	-	visual	S	L / L	show pattern of field from permanent magnets

ELECTRIC FIELD METERS

 

Cat. #	Meter Name	Freq. Range (Hz)	Useful Range (kV/m)	Digital or Analog	No. of Axes	Accuracy/ Sensitivity	Typical Applications
Not Available	MultiDetector Professional	5 - 400k	.1 - 1 1 - 10 10 - 100 10² - 10³ (V/m)	LED	S	M / H	very sensitive, does ELF and VLF separately, does both electric field and magnetic field
A145	Electric Field Meter	40 - 10000	.0001 - 100	D	S	H / H	test fields from power lines, appliances, and shielding effectiveness
A150	Trifield Meter	50 - 100k	0 - 1	A	T	M / M	general purpose surveys
A151	Natural EM Meter	DC	0 - 1.000	A	T	M / H	geological, paranormal & meteorological, studies
A152	AC Electric Field Meter	5 - 2000	.02 - .30 .100 - 10	A	S	M / M	test fields from power lines, appliances, and shielding effectiveness
A152-D	Digital Electric Field Meter	40 - 50k	1 - 9999 (V/m)	D	S	H / H	extremely easy to use, reliable
A155	Trifield Extended Range	5 - 100k	0 - 1.000	A	T	M / H	better for low frequencies
A182	E-Field Sensor Accessory	60	0 - 100	DMM	S	L / H	low cost, relative comparisons
A183	Body Voltage Accessory	25 - 3000	0 - 100	DMM	S	L / M	check voltage induced in body by external fields
A195	ELFLX Sensor	30 - 300	0 - 600V	LED & audio	S	L / L	detect live voltage in wiring/appliances, check shielding effectiveness
A480	Digital Combination Meter	16-2000	1-2000	D	S	H / H	easy, sensitive, accurate measuements of both Electric and Magnetic fields

RADIOFREQUENCY & MICROWAVE METERS

Cat. #	Meter Name	Freq. Range (MHz)	Useful Range (mW/cm²)	Digital or Analog	No. of Axes	Accuracy/ Sensitivity	Typical Applications
A115	RF Analyzer	0.1-20	-10dBm to 40dBm	D	T	H / H	Measure and analyze broadcast RF strength, wave form, frequency, & more. Great price.
A118	RF Detector Probe	0.1 - 1000	0 - 100	D	S	M / M	circuit board RF detection & low cost field strength detection
A122	Plus Guard	460-2400+	-	LED	T	L / M	low cost RF sniffer, check for bugs and cell phones
A129	Digi-Field	0 - 12 GHz	relative, AD	A	AD	M / H	locate RF hot spots, tune antennas, test shielding
A131	CellSensor	835+/-	0-10	A	S	M / M	measures RF radiation from cell phones
Not Available	HF Detector	3-3000	1.2 pW/cm² - 120 mW/cm²	LED	S	L / H	very sensitive RF measurements, can connect to PC for spectrum analysis
A139	Digital MW Leak Detector	2450	0 - 9.99	D	S	H / H	check MW oven leakage, calibrated to give accurate data in mW/cm², high resolution. Highly Recommended!
A150	Trifield Meter	50 - 3000	.01 - 1.0	A	S	M / H	general surveys
A151	Natural EM Meter	0.1 - 2500	.01 - 1.0	A	S	M / H	general surveys, meteorological & paranormal studies
A155	Trifield Extended Range	.100 - 2000	.026 - 260	A	S	M / M	gen. surveys, esp. when low frequencies involved
A158	MicroAlert	100-5000	0.001-1	audio	S	L / H	warns about RF radiation, MW oven leakage, protect pacemakers
A159	Alpha RF Meter	.5-3000	1 nW/cm² - 2 mW/cm²	D	S	M / H	excellent, easy-to-use, reliable, general purpose, calibrated RF meter
A162	EM EYE®	2-2000	2.7 pW/cm² - 90 microW/cm²	D	S	H / H	High accuracy and high resolution measuremnts of RF radiation
A164	ScanProbe	2 - 2000	-10dBm	LED/audio	S	H / H	Near Field RF detection. Cell Phone shielding, EMI
A168	Smart Fieldmeter	0.2 - 3000	10 nW/cm² - 95 mW/cm²	D	3	H/ H	NIST certified, professional quality RF readings; output for data-logging, isotropic probe
A445	Zap Checker	10 - 4500	relative	A, LED, silent vibrator	S	- / H	locate RF hot spots, test shielding, easy-to-use
A446	Zap Checker Enhanced	10 - 6400	relative	A, LED, silent vibrator	S	- / H	highly directional and exquisite sensitivity
A456	Cell Phone Detector	50 - 2500	relative	LED & Audio	S	- / H	detect unwanted cell phone or wireless use
A481	High Frequency Meter	800 - 2500	0.01 – 199.9 nW/cm²	D & Audio	S	H / H	reliable, professional RF meter

OTHER TYPES OF METERS

 

Cat. #	Meter Name	Digital or Analog	Unique Features	Typical Applications
A126	Motion Detector	LED/Audio	easy, portable, and low cost	great for security and paranormal work
A156	Air Ion Counter	D	counts both (+) and (-) ions	meteorological, ESD, static charges, check ionizer effectiveness
A160	3 Wire Analyzer	LED	simple, self contained	check proper outlet wiring and safe grounding
A167	Experiment Wizard	LED & audio	metal detector, static locator, AC/DC voltage detector, battery tester	very low cost, great teaching aid
A179	Deluxe DMM	D	high quality, low cost	use with probes to measure temperature, magnetic & electric fields, body voltage
A188	Electrostatic Locator	A	high accuracy, close range	measure static electricity
A189	Surface Resistivity Meter	LED	103 - 1012 ohm/sq	test any surface for conductivity
A192	DMM with PC Interface	D	upload data to your PC	use with probes to measure temperature, magnetic & electric fields, body voltage
A193	Infra-Red Thermometer	D	self contained, hand held, laser pointer	remote high accuracy temperature measurement: ovens, freezers, motors, paranormal studies
A196	Monitor 4	A	self contained, hand held	measure radioactivity in rocks, soil, jewelry, dental work, water, air, etc.
A196-I	Inspector	D	self contained, hand held	high sensitivity radioactivity measurements, optional PC interface
A198	UV Meter Card	color change	credit card sized	measure harmful UV radiation BEFORE sunburn
A440	Infra-Scan	D	self contained, palm sized, very low cost	remote temperature measurement: ovens, freezers, motors, paranormal studies
A455	UV Smart	D	UVA & UVB, timer	measure harmful UV radiation BEFORE sunburn
A783	Low Cost Radiation Monitor	D	self contained, hand held	budget price, big featured radioactivity meter

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