Pig Signal Detector

Pig Signal Detector - TD Williamson PIG-SIG^®A pig signal detector is a mechanical switch to verify that a pig has left the launcher or has entered the receiver.  Can also be used to provide a discrete input (DI) into the PLC for automated pigging.  A pig signal may be known colloquially as a pig-sig which should not be confused with a PIG-SIG^® which is a registerd trademark of TD Williamson.