Energoflow ULIS-A is a non-intrusive ultrasonic pig passage indicator designed for reliable detection of all kinds of pigs used for pigging of filled liquid pipelines. It also provides an indication and an estimate of accumulated debris in front of the pig and an estimate of the effectiveness of the pigging procedure. The device is certified as intrinsically safe for use in hazardous areas. The pig detector comprises an ultrasonic non-intrusive sensor clamped to the outside of the pipe and a remotely installed electronics unit. The clamp-on design of the sensor allows the device to be used for all pipe sizes. The electronics unit provides a visual indication of pig passage as well as a dry relay output signal for integration into existing control systems. Besides, the electronics unit provides archiving of up to 120 events of pig detection and automatic reset functions. With the help of specialized software provided, graphical visualization of the approach of the debris plug as well as pig/sphere passage, and change in density of the fluid is possible.
The major advantages of the ULIS-A pig detector are:
- The non-intrusive design provides zero pressure drop and no obstruction to the flow or the pig and allows for all kinds of applications – high pressure, sour service, etc.
- Any type of pig, sphere, etc. can be detected in both directions.
- There are no mechanical moving parts – so no wear or tear, minimum servicing.
- The active nature of the ultrasonic device guarantees reliable pig detection eliminating false alarms due to outside interference.
Detectors are certified for use in a hazardous area and have EC-Type Examination certificate number FTZU 11 ATEX 0144X.