Transmitters for Accurate Utility Locating
These transmitters place a clean, well-controlled locating signal onto the asset. What matters in the field is how well the signal tracks—through the right frequency plan and power that holds up over distance and depth.
1 to 6 (from a total of 6)
What makes a good transmitter?
Efficient coupling, the right frequency set and sufficient output. This keeps the locate signal strong and selective—even in noisy urban corridors and at typical burial depths.
Coupling methods
- Direct connection: highest efficiency via leads and ground return
- Signal clamp: inject/identify on a single conductor without disconnecting
- Induction: non-contact injection when access is limited
Frequencies & power
- Low (512/640 Hz, ~1 kHz): deep, long, well-earthed lines
- Mid (8–9 kHz): balanced for mixed sites
- High (33 kHz): universal coupling to short/discontinuous conductors
- Power levels: match to line length, depth and ground path quality
Selection guide
- Task: route tracing, service locating, identification, sheath/earth faults (with A-frame)
- Compatibility: align frequency set with your receiver
- Return path: ensure solid grounding and proper leads
- Ergonomics: display, controls, weight, IP rating
- Power: batteries/packs, runtime and charging
Pro tips
- Always verify the ground/return path and optimize it
- Compare signal quality—change mode/frequency when needed
- Trace in segments and document readings
FAQ
- Which coupling is most efficient?
- Direct connection provides the strongest, most directional signal.
- Why use pulsed/warble modes?
- They improve separation from other sources and help in multi-utility corridors.
- How much power do I need?
- Lower for short/shallow services; higher for long/deep routes or poor returns.
- Can I trace plastic pipes?
- Not directly—use tracer wire or a sonde/traceable rod for detection.