Underground Pipe Locator for Unmarked Plastic Pipe

This is a revolutionary new underground pipe locator, locates underground utilities even unmarked plastic pipe. Now underground utilities previously thought “unlocatable,” such as polyethylene Pipe with no tracer wire (or damaged wire), can now be located even without system access. This utility locator can be used on any plastic, metal, concrete, clay, fiberglass, cast and Ductile Iron Pipe. The APL senses through most surfaces, such as: concrete, asphalt, gravel or soil. The “acoustic pipe locator” works on ultrasound technology, and plays well within the +/- 18 inch regulatory requirements. Actually, the unit locates within +/- two-four inches in general. The operation is quite easy, and below is how it works: Set the APL on the ground in a way to create a good ground contact. When pressing a button on the display the transmitter (actuator) sends ultrasonic waves (set of “pings”) down into the ground. Receivers (accelerometers) listen for the reflected ping. The operator can then move the APL 6”-12” to the right (or left) and activate the transmitter again. The strength, speed and duration of the echoed pings are monitored by the locator. Each press of the button is referred to as a “slice” and a set of slices is a scan. After multiple scans and pressing the “Pipe map” button the APL displays the location of the pipe. From the APL manual: “The APL locates the voids in the ground created by a pipe through the science of impedance mismatch. The speed of sound through ground materials versus the internal portion of a pipe (even when filled with liquid) is detectable using the APL. The acoustic wave pattern of specific timing and frequency is monitored and processed using the accelerometers. Based on the return signature the instrument will determine if a void is present within the minimum requirements as set in the software.”