his Non Intrusive Pig Signaller is used to determine whether the pig passes or not during pigging of oil, gas, water and other transmission pipelines. It is flexible and convenient to install and disassemble, and can meet the requirements of various pipes for indicators. It only needs to fix the indicator around the outer wall of the pipeline. Therefore, it solves the problem that the mechanical passing indicator is easy to ignite, easy to produce mechanical failure and is not explosion-proof. Moreover, it affects the accuracy of passing ball judgment and the problems of false alarm and missed alarm caused by electronic interference. In a word, if you have any other questions, please contact our professionals to answer them for you.