Georg Fischer Ltd
Radiodetection Pipe and Cable Locators

RD7100 Precision Locator

Four industry specific RD7100 Precision Locators built for performance, quality and durability. All the RD7100 locators come with Radiodetection's pioneering features, such as StrikeAlert, Compass Orientation and depth measurement as standard.

Construction: RD7100SL

Accurate and simple to use, the RD7100SL comes with four active and two passive frequencies that cover the majority of site locating tasks. A rugged IP65 rated casing along with a high contrast screen make it suitable for use in all weather conditions.

Water and Pipeline: RD7100DL

With four sonde frequencies, the RD7100DL can be used to trace deep pipes made from a variety of materials including: cast iron, fibre and concrete. Additionally, it can be used to locate Cathodic Protection System (CPS) signals applied to pipelines.

Power: RD7100PL

Designed for use in dense infrastructures where signals from high voltage equipment and cables can be confusing or overwhelming. Dynamic Overload Protection reduces the effect of interference, while Power Filters can be used to establish if a single large power signals comes from one source or from the presence of multiple cables.

Telecom: RD7100TL

The RD7100TL features higher frequencies to locate high impedance cables amongst large bundled pairs and sonde frequencies for duct and conduit tracing. Higher frequencies can also be used to trace sheathed domestic cables without grounding connections. Cable sheath faults can be located to within 10cm using the 8kHz Fault Find mode with a Radiodetection A-Frame.

The RD7100 offers a choice of locate modes, each of which is optimized for specific tasks.

Peak: Displays the strongest response when directly above a cable. Depth and current measurements are also shown. Used for precise locating prior to and during excavation . Many professionals have trained in this mode and appreciate the simplicity of the display.

Guidance: Proportional guidance arrows and differential audio tones indicate if the utility is to the left or right of the user. Used for checking general direction of utilities as part of a pre-locating sweep. Better for congested areas than null mode alone.

Null: Arrows and audio signals indicate where the cable is relative to the operator. A null response is displayed above the cable. Used for long distance marking of single utilities in non-congested areas. Audio response allows users to rely on sound rather than the screen.

Peak+Guidance: Used for finding and following the Peak response quickly. Peak graph with simultaneous depth and current information can be used for precise locating of utilities.

Peak+Null: Used for checking distortion, which can indicate the presence of multiple lines, or other features which may require extra vigilance.

Tx-10 Transmitter

The Tx-10 is designed to meet the demands of tracing utilities through today's complex underground infrastructure. The Tx-10 has the highest power capability with both Fault Find and CD modes as standard. The Tx-10 features constant current across the entire bandwidth in all modes (direct connect, clamp or inductive mode), and deliver convenience on-site with an IP65 ingress protection rating and a large, high contrasr, backlit LCD screen. The Tx-10 has an accessory storage tray which holds the supplied Direct Connection Lead, Earth Stake, Earth Reel and Neodymium Magnet.

The RD7100s are normally supplied as a kit which includes the RD7100 Locator, Tx-10 Transmitter, 4" (100mm) Transmitter Clamp and a Soft Carry Bag. Other accessories available include:

Locator Rechargeable Li-ion Battery Pack Kit: This kit is a convenient and cost effective alternative to alkaline batteries. It includes a battery pack and a universal mains charger. A 12V automotive charger is available for the Locator Rechargeable Battery Pack.

Transmitter Rechargeable Li-ion Battery Pack - complete Kit: This kit is a convenient and cost effective alternative to alkaline batteries. It includes a battery pack and both a universal mains charger and 12V automotive charger.

Transmitter Clamps: Used to apply a transmitter signal to a specific cable or pipe. Particularly useful where direct connection is not possible, or on live cables when these cannot be de-energised. Available in 2" (50mm), 4" (100mm), 5" (130mm) and 8.5" (215mm) diameters.

Current Direction (CD) Transmitter Clamp: This clamp is used to apply a CD or low frequency signal from a transmitter to a cable or pipe. The CD signal is useful for identifying individual utilities in congested areas. This is the only transmitter clamp which can be used with frequencies below 1kHz.

A-Frame: Used for locating sheath faults on cables, and coating defects on pipelines. It provides direction and magnitude of fault information on the display of the locator.

Sondes: Self-contained signal transmitters which can be attached to a push-rod to allow detection and tracing of non-metallic pipes or ducts.

Large Stethoscope: This flexible 20" (50cm) long accessory helps to locate and identify individual cables that are bundled together, in a tray or where it is not possible to use a clamp.

Live Plug and Cable Connectors: Connects the transmitter signals directly onto power distribution systems without needing to isolate the supply first.

FlexiTrace: Highly flexible 50m push-rod with integrated sonde. The rod can be energised by a Radiodetection transmitter and inserted into pipes as small as 12mm. It is used with a Radiodetection locator to find and trace small diameter plastic pipes.


Georg Fischer Ltd offers complementary training for one person per locator purchased. Our training is carried out by suitably qualified operators to a level to ensure correct operation of the locator.

The courses are structured to suit different levels of practical experience and cover the knowledge and skills required to operate the equipment correctly.

As a general rule the complementary training is available for 3 months from the date of purchase. Refresher training and/or new employee training for pipe and cable locators will be at a chargeable cost.

Download: RD Locator Training Request Form