Understanding Radiation Units

• Counts per Minute (CPM):
  Commonly used on Geiger counters, CPM measures the number of radiation events detected per minute. It is useful for quick assessments and comparing relative exposure levels.
• Microsieverts per Hour (µSv/h):
  Indicates the absorbed dose rate and is standard in radiation safety. Higher values mean greater exposure.
• Magnetic Fields (mG/µT):
  EMF meters display magnetic field strength in milligauss or microtesla. These units quantify low-frequency electromagnetic fields emitted by electrical devices.
• Electric Fields (V/m):
  Represents the electric field intensity in volts per meter, often from household appliances or wiring.
• Radiofrequency (RF) Radiation (µW/cm² or mW/m²):
  Measures high-frequency radiation from Wi-Fi, mobile networks, and other RF sources. Units reflect power density impacting your body.

Interpreting Readings

• Baseline Readings:
  Establish the normal background levels in your environment to identify anomalies.
• Low, Moderate, and High Thresholds:
  Compare your readings to safety guidelines from organizations such as ICNIRP or WHO. For example, residential RF exposure should typically remain below 10 µW/cm².
• Spotting Hotspots:
  Sudden spikes in EMF or radiation indicate potential sources that may require mitigation or avoidance.

Practical Tips

• Take multiple readings at different times and positions to get accurate averages.
• Keep meters away from your body while measuring to avoid interference.
• Use peak hold mode for capturing transient spikes.
• Document readings consistently for long-term monitoring.

Common Mistakes to Avoid

• Ignoring calibration and battery status can lead to inaccurate readings.
• Confusing EMF units with ionizing radiation units may mislead safety assessments.
• Failing to consider environmental factors like metal structures, power lines, or electronics can distort results.

Final Thoughts