TERRA has developed the “Traceable Expander Chuck”, which allows the contractor to measure the exact path of a new pipe during the pipe pulling progress. This is possible for pipe replacement (pipe bursting, inliner) and for HDD bores. The sonde D 18 is screwed behind the expander chuck by a shock proven adapter. The sonde D 18 can be located with conventional cable locators.
The adapters are shock proven. This increases the lifetime of the sonde. Depending of the pipe diameter one of the following adapters is required.