Generally, pig detector is group by intrusive and non-intrusive type. For non-intrusive type pig, there is no mechanical part that required to be installed inside the pipeline.
Henceforth, it has a number of benefits:
1. Any type of PIG can be detected in both directions.
2. There are no mechanical moving parts resulting in low maintenance.
3. Non-intrusive design benefits include:
- No wetted parts
- No pipe pressure drop
- Easy to install (no tappings or welding required)
- No shutdown required for installation
4. Finally, it is easy to retrofit for existing installations with no need for modifications to the piping or PIG
The non-intrusive pig detector is an acoustic device. When a PIG travels through the pipe, the friction between the PIG and the pipe will generates a characteristic noise. This noise contains information that can be interpreted to gain more knowledge on the situation inside the pipe. The noise is detected and can be transformed into digital signal.
Image courtesy from Roxar Pig Detector catalogue. Emerson Process Management.
Hi Nice Blog,
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