New Signaller Masters the Detection of Pigs in Pipes

The new ultrasonic pig signaller Sonopipe 12 by Sonotec (Germany) was developed for the detection of pigs in pipelines. It controls the section of cleaning and testing pigs in pipes for oil, liquid gases and water.

The advantage of this easy and reliable method is the outside coupling of the sensors around the pipes. They are able to detect whether there is a pig or just the product liquid right behind the wall. Environmental risks due to dangerous holes in pipeline walls, as seen in systems with mechanical pig detectors, are now a thing of the past.

The sensor does not reach the inside of the pipes. The installation is easy and can be carried out during line operations. The Sonoview software provided with the device helps to start operations. Since the ultrasonic sensor does not touch the liquids, there is practically no abrasion. The amount of maintenance is only small. The sensors can be applied for pipe diameters between 8 and 60.

In comparison to methods working with radiation sources, the ultrasonic method is perilous. An effective electronic system, which is integrated within the measurement device, controls the frictionless operation, signalises the pig section and alarms in case of a failure.

The pig signaller includes the following components: a sensor, a measurement device and a pipe fastener. These devices have relay outputs, which can be integrated in process controls. Via further outputs, it is possible to connect signal lamps and sirens as optional equipment. The sensors are ATEX certified.