Last Updated: April 9, 2019 9:31 AM
First published: April 6, 2019
characters of two electromagnetic fields (EMF) meters from Amazon are listed in the table at end of blog
https://www.amazon.com/Meterk-Electric-Radiation-Temperature-Dosimeter/dp/B07LB18YN7
https://www.amazon.com/TriField-EMF-Meter-Model-TF2/dp/B078T2R64C
https://www.meterk.com/tools-home-improvement-3256/#Testers
https://www.trifield.com/product/trifield-emf-meter/
EMF meters are popular instruments use by paranormal investigators, among other detectors (some seem very questionable.
e.g.very popular in TV shows
- Ovilus: just make you scratch your head what algorithm it uses to pick out of 2000 words from environment changes
- Spirit Box: ghosts like those annoying white noise? and respond in FM/AM bands via EVP)
https://ghosthuntersequipment.com/collections/all
https://www.theghosthunterstore.com/category-s/106.htm
https://www.digitaldowsing.com/shop/
http://www.lessemf.com/ghost.html
some EMF meters are very cute, come in shape of teddy bear
https://www.ghoststop.com/EMF-Meters-Ghost-Hunting-s/4.htm
https://en.wikipedia.org/wiki/EMF_measurement#Meters
As for any scientific instruments, question need to be answered - how to calibrate these kind of devices? known source with fixed field strength?
| Meterk MK54 | AlphaLab TriField TF2 | |
|---|---|---|
| $46.97 | $168 | |
#3 best seller |
#2 best seller | |
| Magnetic | AC 3 - axis | |
| frequency range | 20 Hz - 300 Hz | 40 Hz - 100 kHz |
| accuracy | ±4% @ 50/60 Hz | |
| range | 0.1 - 1999 mG / 0.01 - 199.9 μT | < 100.0 mG |
| resolution | 0.1 mG / 0.01 μT | 0.1 mG |
| Electric | AC 1 - axis | |
| 20 Hz - 3500 MHz | 40 Hz - 100 kHz | |
| ±5% @ 50/60 Hz | ||
| 0 - 1999 V/m | < 1000 V/m | |
| 1 V/m | 1 V/m | |
| RF | 1 - axis | |
| 20 MHz - 6 GHz | ||
| ±20% @ 1 GHz | ||
| < 19.999 mW/m² | ||
| 0.001 mW/m² | ||
| Temperature | ||
| -10°C - 50°C | ||
| 0.1°C |