Characteristics and Features of Underground Locators

Important Characteristics and Features of underground Locators

Modes of Detection
  • Inductive Mode – through the soil
  • Inductive Clamp Mode – clamp around the target line
  • Direct Connection or Conductive Mode – clip onto the target line
  • Magnetic Mode – ferrous metal detection
  • Live Cable Mode – energized power line (Magnetic Mode in the MAC)
Frequency
  • Radio Frequency (RF) usually above 10 kHz, and the 80 kHz and above are usually called High Frequency (HF)
  • l Audio Frequency (AF) usually 10 kHz & below:

10 – 8 kHz usually called he Mid-range frequencies
571 – 512 Hz called the Low Frequencies (LF)

Transmitter Power
  • RF frequencies are limited to power by FCC – limits signals to fairly short distance.
  • AF frequencies can use high power – driver signals farther.
Receiver Weight & Ergonomics
  • Needs to be lightweight.
  • l Needs to be balanced.
Depth Detection
  • RF & AF range 12 to 15 feet
  • Magnetic range depending on mass & orientation of target, up to 20 feet
  • Depth reporting within ” + or -” 5 to 10%
User Interface
  • Gain Control – Automatic – or -Manual
  • Push Button Depth Reporting- or – Triangulation
  • LCD or Analogue Meter- or – Audio only
  • Controls – Key Pad or Knobs- or – Combination thereof