How to Trace Underground Drain Pipes Using a Sonde Malaysia
How to Trace Underground Drain Pipes Using a Sonde Malaysia
Introduction
Tracing underground drain pipes can be difficult, especially when the pipes are made of PVC, HDPE, or other non-metallic materials. Unlike electrical cables or steel pipes, plastic drains do not produce electromagnetic signals that a standard cable locator can detect.
The Tomkat V2 Pipe & Cable Locator, together with the 5m Sonde (33kHz) included in the SIGEN 2+ Signal Transmitter Builder's Kit, provides a simple and reliable solution for locating underground drainage systems without unnecessary excavation.
What Is a Sonde?
A Sonde is a compact battery-powered transmitter that emits a 33kHz locating signal.
Instead of detecting the pipe itself, the Tomkat V2 detects the signal emitted by the Sonde.
This allows operators to accurately trace the route of underground non-metallic pipes.
Why Use a Sonde?
Many underground drainage systems are constructed from materials that cannot be detected directly, including:
PVC drain pipes
HDPE pipes
Plastic sewer pipes
Underground conduits
Stormwater drainage pipes
A Sonde makes it possible to locate these systems without damaging the surrounding area.
Step-by-Step Guide
Step 1 – Access the Pipe
Locate a suitable access point, such as:
Inspection chamber
Manhole
Cleanout point
Maintenance access
Insert the 5m Sonde into the pipe.
Step 2 – Switch on the Sonde
Ensure the Sonde is transmitting its 33kHz signal before moving it through the pipeline.
Step 3 – Set the Tomkat V2 Receiver
Switch on the Tomkat V2 and select the appropriate locating mode for Sonde detection.
Hold the receiver upright and begin scanning the area above the expected pipe route.
Step 4 – Follow the Signal
As the receiver approaches the Sonde:
Signal strength increases.
Audible tones become stronger.
The display indicates the Sonde's position.
Mark the pipe route as you progress.
Step 5 – Confirm the Route
Continue tracing until the entire underground drain has been identified.
Mark:
Pipe direction
Bends
Junctions
Inspection chambers
This information helps prevent accidental damage during excavation.
Typical Applications
The Sonde is commonly used for:
Sewer Maintenance
Trace underground sewer pipes before repair work.
Drainage Inspection
Locate blocked stormwater drains.
Building Renovation
Identify underground drainage systems before foundation work.
Factory Maintenance
Locate concealed drainage and service pipes.
Cable Duct Installation
Trace underground communication ducts.
Municipal Infrastructure
Map underground drainage networks for maintenance planning.
Advantages of the Tomkat V2 + Sonde
Using the Tomkat V2 with the 5m Sonde provides several benefits:
Locate non-metallic pipes accurately
Reduce unnecessary excavation
Save time and labour
Improve maintenance efficiency
Minimise the risk of damaging underground infrastructure
Support safer construction and utility works
Complete SIGEN 2+ Builder's Kit
The kit includes:
SIGEN 2+ Signal Transmitter
Earth Stake
Connection Leads
100mm Signal Clamp
5m Sonde (33kHz)
Carry Bag
Manufacturer's Calibration Certificate
8 AA Batteries
Everything needed for professional underground utility locating is included in one package.
Why Choose MTM Precision?
MTM Precision Sdn Bhd is a trusted supplier of underground utility locating equipment in Malaysia.
We offer:
Local stock availability
Technical consultation
Product demonstrations
After-sales support
Calibration services
Fast nationwide delivery
Our experienced team can recommend the right equipment for contractors, plumbers, utility providers, and municipal authorities.
Contact MTM Precision
Website: www.mtmpre.com.my
WhatsApp: +6016-660 7346
Email: mtmpre@yahoo.com
Need to trace underground drain pipes without unnecessary digging? Contact MTM Precision Sdn Bhd today to learn more about the Tomkat V2 Pipe & Cable Locator with the SIGEN 2+ Signal Transmitter Builder's Kit and 5m Sonde (33kHz)—the professional solution for underground drain and pipe tracing in Malaysia.
04 Aug 2026
