Pearson Survey Detector

The Pearson-Type detector is well known to industry, however, Tinker & Rasor's Pearson-Type Detector, Model PD, is an all transistor instrument. It's light weight, low battery drain and rugged construction are all features of this New Design. The PD Detector can be used to locate discontinuities in the coating of buried pipelines, to locate electrical contacts on the lines and to effectively locate the lines themselves. All of these findings can take place without the necessity of uncovering the pipeline under test. However, a Pearson-Type Detector can be used successfully only if a pipeline has been carefully backfilled and the soil is compact around it. There also must be some moisture content in the surrounding soil. The cleats are worn by two inspectors walking in tandem. The cleats are terminated by cable connections to a receiver worn on the belt of one inspector. They enable him to accurately find holidays or large discontinuities in pipe coatings. The search coil can locate the pipe or shortings.