Rausch 512 Hz Rodding Sonde – Cast Iron Pipe Locator

The Rausch UK 512 Hz Rodding Sonde is a powerful, self-contained and waterproof locating transmitter designed for tracing underground pipes and identifying the position of blockages, collapses and other points of interest.

Operating at 512 Hz, this version is particularly suited to locating from within cast iron pipes, where higher-frequency signals can be more difficult to detect. The sonde can be attached to Cobra Rods, Flex Rods, Drain Rods and other suitable push-rod systems using its M10 threaded connection.

Once positioned inside the pipe, the sonde emits a continuous locating signal which can be detected from above ground using a compatible 512 Hz cable locator or receiver. This allows the operator to trace the route of the pipe and pinpoint the position of a blockage or other underground feature before excavation or repair work begins.

Why Choose the 512 Hz Sonde?

The 512 Hz version is designed for applications where a lower-frequency locating signal is preferable, particularly when working with cast iron pipework.

• 512 Hz locating frequency
• Ideal for locating through cast iron pipes
• Helps pinpoint underground blockages and collapses
• Suitable for tracing buried pipe routes
• Compatible with suitable 512 Hz cable locators
• Attaches to Cobra Rods, Flex Rods and Drain Rods
• Robust waterproof construction for professional use

Key Features

• 512 Hz continuous transmitting signal
• Red colour codingfor easy identification
• Male M10 threaded connectionwith Nyloc threadlock
• Up to7m (23ft) locating depth
• IP68 rated
• ABS plastic and stainless-steel construction
• Powered by a single AA alkaline battery
• 100+ hours battery lifeat 18°C
• Compact 38mm diameter body
• Designed to withstand demanding site conditions

Typical Applications

• Locating blockages within cast iron pipes
• Tracing underground drains and sewers
• Locating buried ducts and pipework
• Pinpointing collapsed or damaged pipe sections
• Determining pipe routes before excavation
• Locating the end position of a Cobra Rod or push rod

Technical Specification

How It Works

Attach the sonde to a compatible rod and feed it through the pipe until it reaches the area requiring investigation. The sonde continuously transmits a 512 Hz signal, allowing a compatible receiver to detect its position from above ground.

By following the signal, the operator can establish the route of the buried pipe and pinpoint the sonde's position. This is particularly useful when identifying the location of blockages, collapses, connections or other defects before carrying out excavation or repair work.

Available Accessories

• 3-46-SA– Sonde Adapter, M5 / M10
• 3-911-SA– Sonde Adapter, M10 / M12
• 3-9-FM10EF– Female M10 End Fitting for 9mm Cobra Rods
• 3-BR-SA– Universal Drain Rod Sonde Adapter, Uni / M10

Other Frequencies Available

Rausch UK Rodding Sondes are also available in alternative frequencies for different locating applications:

• 370-100 – 33 kHz Rodding Sonde:Orange, standard UK locating frequency for general underground location.
• 370-101 – 8kHz Rodding Sonde:Green, an alternative frequency for applications where 33 kHz locating is difficult.
• 370-102 – 512 Hz Rodding Sonde:Red, ideal for locating blockages in cast iron pipes.