FILTER WITH MEMORY, COMMUNICATION DEVICE AND PRESSURE SENSOR

摘要

PROBLEM TO BE SOLVED: To provide a method for accurately measuring the pressure and/or flow rate of a filter element at various points in a filter housing, in which defects of the conventional system and method are solved.SOLUTION: A pressure sensor 30 is attached to the filter element 10 and a wireless transmitter 40 is located near the pressure sensor 30 or located to be integrated with the pressure sensor. The wireless transmitter 40 can be encapsulated together with the pressure sensor 30 in a single integrated component or can be separated and made to communicate with each other via an electrical signal or the like. A wireless receiver 60 located on the outside of a filter housing 20 is used for communicating with the wireless transmitter. An RFID reader or a base station is used as the wireless receiver. The wireless transmitter 40 such as an RFID tag can be coupled to the pressure sensor 30.