What the TriField TF2 is
The TriField EMF Meter TF2 is a three-in-one meter: it measures AC magnetic fields (in milligauss), AC electric fields (in V/m) and radio frequency (in mW/m²) from a single handheld unit, with a switch to choose the field. It is the meter most often recommended as a first purchase for a whole-home EMF survey, because it covers all three fields the average home actually has.
Why people choose it
- Triple-axis magnetic sensing. You do not have to rotate the meter to find the true magnitude of a magnetic field — a common source of wrong readings on single-axis meters.
- Frequency weighting mode. The weighted setting increases response with frequency, which reflects how induced current in the body rises with frequency. Useful when comparing dirty-electricity-style sources against plain field strength.
- All three fields in one device. Cheaper than buying a gaussmeter, an electric field meter and an RF meter separately.
- Analogue-style readout with peak hold. Fast response makes it easy to walk a room and see where a field peaks.
Where it is the wrong tool
- Low-level RF work. Its RF scale is calibrated for finding and comparing sources, not for resolving the very low µW/m² levels a building-biology sleeping-area assessment works at. For that, a dedicated RF meter such as the LATNEX HF-B3G/HF-B8G or a Gigahertz Solutions HF series meter is the better instrument.
- Identifying the source. A broadband meter tells you how much; it cannot tell you whether it is Wi-Fi, LTE or a neighbour's smart meter. That is a job for a spectrum analyser.
- Millimetre-wave 5G. If mmWave coverage matters to you, choose a meter specified above 6 GHz.
- Documented occupational exposure. Use a wearable personal RF monitor with logging instead.
How it compares
| Meter | Fields | Best at |
|---|---|---|
| TriField TF2 | Magnetic + electric + RF | One-meter home survey; strongest magnetic and electric field performance in its price class |
| Cornet ED88T Plus | Magnetic + electric + RF | RF-leaning alternative with data logging and a frequency readout |
| CORNET ED98 QPro5G | Quad-mode | Wider RF coverage for 5G-era sources |
| LATNEX AF-5000 | Multifield, 5G | Higher frequency ceiling than most 3-field meters |
| Gigahertz Solutions HF32D / HF35C | RF only | Sensitive, directional RF measurement for shielding verification |
Full range: all EMF meters · personal and professional meters
How to use it for a home survey
- Magnetic first. Walk every room on the magnetic setting, noting mG at head height and at the bed, sofa and desk. Anything persistently elevated points at wiring, a panel or a transformer — magnetic fields need magnetic shielding film, not paint.
- Electric second. Repeat on the electric setting with lights and bedside electronics on, then off. Large swings indicate wiring behind walls.
- RF third. Sweep window by window, holding the meter at arm's length and rotating slowly. Note the peak per window — that is where shielding paint or window film pays back most.
- Repeat at night. Cell load, neighbours' Wi-Fi and household circuits all change after dark.
- Re-measure after shielding in exactly the same positions, and keep both numbers.
To interpret the numbers, see safe EMF levels for humans. To choose between models, see the EMF meter buying guide.