| T O P I C R E V I E W |
| garyniv |
Posted - 06/23/2025 : 01:14:24
I bought a GQ EMF-390 v2 in January 2025. At the beginning I saw it get as low as 0.3 mG for EMF, in some areas around me.
But nowadays wherever I go (even in a forest) the lowest value is 0.7 (very rarely 0.6). This makes me not trust the values shown. Is there a way to convince myself that the values shown are true?
Thanks. |
| 2 L A T E S T R E P L I E S (Newest First) |
| Specjalista1 |
Posted - 07/01/2025 : 23:32:48
Chat GPT: Does an EMF meter ever show 0 mG, even when everything is turned off?
Short answer:
No, an EMF meter almost never shows exactly 0 mG (milligauss), even if everything nearby is turned off.
#128269; Why not?
1. Earth’s Magnetic Field #127757;
The Earth has its own magnetic field, typically between 300–600 mG, depending on your location. Sensitive EMF meters can detect this background field.
#8594; So even without any electrical devices nearby, the meter can still show a reading.
2. The Meter’s Own Noise
Every measurement device has some internal electronic noise. This can cause the meter to display something like 0.1–0.5 mG, even in a perfectly shielded environment.
3. Residual Fields from Wiring
Even if devices are "off," the electrical wiring in walls may:
still carry voltage (even without current flow),
or pick up fields from nearby transformers or neighbors' devices.
4. Meter Accuracy and Calibration
Cheaper EMF meters often aren't perfectly calibrated. They might drift or show minor inaccuracies, which can lead to small readings even when there's no meaningful field.
What’s a normal magnetic background level?
Environment Typical EMF (magnetic) level
Rural area, far from power lines ~0.1–0.3 mG
Indoors, away from devices ~0.5–2 mG
Near appliances (e.g., fridge, monitor) 2–10+ mG
Near transformers 50–100+ mG
Conclusion:
Don’t worry if your EMF meter doesn’t show exactly 0 mG — that’s normal. A reading like 0.3–1 mG with all devices turned off is still low and safe background.
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| bekean23 |
Posted - 07/01/2025 : 18:32:25
Hey @garyniv, I’ve had the same model (EMF-390 v2) for a while now, and I noticed something similar. It rarely goes below 0.6–0.7 mG, even in remote areas. I think part of it is just the background EMF “noise” from all the electronics we’re constantly surrounded by—even in places that seem quiet.
One thing that helped me trust the readings more was doing a manual baseline test: I turned off all electronics at home (Wi-Fi, phone, etc.), removed batteries where I could, and left the meter in the center of the room. I got around 0.4–0.5 mG in that setting. You could try that and compare it to what you see outside. |
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