{
  "schema": "benchpicked_decision_dataset.v1",
  "dataset_id": "emf-meter-field-coverage-2026-09-24",
  "version": "2026.09.24",
  "updated_at": "2026-09-24",
  "methodology": "The matrix separates field mode, frequency range, axis context, published accuracy, and consumer-screening use so a broad label such as EMF meter is not treated as proof of equivalent coverage.",
  "evidence_boundary": "Published specifications describe instrument scope. They do not establish BenchPicked-measured accuracy, medical risk, shielding efficacy, or professional compliance suitability.",
  "columns": [
    "record_id",
    "product",
    "field_modes",
    "frequency_range",
    "axis_context",
    "published_accuracy",
    "published_range",
    "use_boundary",
    "source_urls",
    "page_url"
  ],
  "changelog": [
    {
      "date": "2026-09-24",
      "change": "Initial versioned publication from the current source-attributed authority cluster."
    }
  ],
  "records": [
    {
      "record_id": "trifield-tf2",
      "product": "TriField TF2",
      "field_modes": "AC magnetic | AC electric | RF",
      "frequency_range": "AC magnetic/electric 40 Hz-100 kHz; RF 20 MHz-6 GHz",
      "axis_context": "3-axis magnetic measurement",
      "published_accuracy": "magnetic ±4% at 50/60 Hz; electric ±5%; RF ±20% at 1 GHz",
      "published_range": "RF power density 0.001-19.999 mW/m²",
      "use_boundary": "home source-finding and relative screening",
      "source_urls": "https://trifield.com/products/trifield%C2%AE-emf-meter-model-tf2",
      "page_url": "https://benchpicked.com/emf/trifield-tf2-review/"
    },
    {
      "record_id": "cornet-ed88t-plus",
      "product": "Cornet ED88T Plus",
      "field_modes": "RF | low-frequency electric | low-frequency magnetic",
      "frequency_range": "RF 100 MHz-8 GHz; magnetic 50 Hz-10 kHz or 50 Hz-1 kHz mode; electric 50 Hz-50 kHz",
      "axis_context": "Confirm orientation and model manual before comparison",
      "published_accuracy": "refer to current manufacturer manual",
      "published_range": "mode-specific; do not combine RF and LF scales",
      "use_boundary": "consumer source-finding and relative screening",
      "source_urls": "manufacturer manual and specification page",
      "page_url": "https://benchpicked.com/emf/cornet-ed88t-review/"
    },
    {
      "record_id": "professional-survey-boundary",
      "product": "Professional survey instruments",
      "field_modes": "application-specific calibrated probes",
      "frequency_range": "depends on probe and calibration package",
      "axis_context": "defined by instrument and protocol",
      "published_accuracy": "requires traceable calibration documentation",
      "published_range": "application-specific",
      "use_boundary": "professional compliance or survey work",
      "source_urls": "instrument-specific calibration record",
      "page_url": "https://benchpicked.com/emf/emf-meter-specs/"
    }
  ]
}