Brand: SPX

RD7100 DL Cable and Pipe Locator

Specific for water and pipeline usage, with four sonde frequencies, the RD7100DL can be used to trace deep pipes made from a variety of materials including: cast iron, clay, fiber, concrete and brick. Additionally, it can be used to locate Cathodic Protection System (CPS) signals applied to pipelines.


  • 5 Locate Frequencies - Active frequencies are used in conjunction with a transmitter either in induction, direct connection or signal clamp. 
    Direct connection is applying a transmitter signal directly onto the metallic part of a cable or pipe.
    Signal clamping is used to apply a transmitter signal safely to a cable or pipe with disrupting the supply.
    The Induction method is used when it is not possible to apply a signal from the transmitter directly on to a cable or pipe.
    The choice of signal frequency is an important factor for effective tracing and identification of buried lines. There is no single frequency that covers all conditions. 
    Low Frequency 512Hz - This low frequency is most useful for line tracing and identification over long distances. It does not couple easily to unwanted lines and it is too low for induction. 
    Medium Frequency 8kHz - This medium frequency is the most useful general-purpose signal, high enough for induction, with limited coupling to wanted lines. It may not be high enough to impose a strong signal on small diameter line like telecom cables.
    Higher Frequency 33kHz - This higher frequency is easily applied by induction to most lines, so it is very useful for initial search. It travels on small diameter lines. However, It couples more easily to unwanted lines, and loses its strength over shorter distances than lower frequencies. 
    Very high Frequencies 100kHz and above - This very high frequency range deals with the difficult cases – induction onto small diameter lines in dry sandy soil, and short lengths of cable. It is very easy to apply by induction but it couples very easily to unwanted lines, and does not travel far.
  • 4 Sonde Frequencies - Sondes are battery powered signal transmitters for tracing or locating non conductive utilities. 
    Examples of utilities can be; pipes, ducts, sewers and drains.
  • 3 Passive Modes -
    CPS (Cathodic Protection System)
  • Compass in Active/Passive Modes - Rapidly trace the path of a target utility using proportional arrows and a directional indicator.
  • Compass in Passive Modes - Power Filters.
  • Depth in Power - A depth reading can be taken when directly over a target line when the locator is in passive power mode.
  • Power Filters - Establish if a strong power signal comes from one source or multiple cables, using the harmonic properties of mains networks.
  • Fault Find - Combine the RD7100 locator with an accessory A-frame to identify and pinpoint insulation sheath faults to within 4" (10cm).


  • On-Board GPS & Usage Logging - GPS equipped RD7100 locators automatically capture key locate parameters every second, providing a comprehensive picture of individual locates and allowing you to assess usage patterns over periods of a year or more.
    The data generated can be used to ensure adherence to best practice, or to identify training needs before poor work habits develop. Additionally, the information can be used for internal audits or shared with stakeholders to enable process improvements, and evidence task completion.
    Usage data can be exported in multiple file formats – for example, KML for Google Maps to confirm where and when the work was performed.
  • CALSafe - CALSafe – enabled units can be set to automatically deactivate on expiry of the defined calibration interval, to help ensure compliance with individual company policies. The interval required between services can be customized using the C.A.T Manager software to anything up to one year
  • Lithium-Ion battery - Lithium-Ion rechargeable battery options for both locator and transmitter provide extended runtime with reduced running costs.