MEASUREMENT FLOW PASSAGE UNIT FOR ULTRASONIC SENSOR, AND ULTRASONIC TYPE GAS METER

摘要

PROBLEM TO BE SOLVED: To provide a measurement flow passage unit for an ultrasonic sensor inexpensive and easy to disassemble as well, and an ultrasonic type gas meter using the measurement flow passage unit for an ultrasonic sensor.;SOLUTION: The measurement flow passage unit 24 for an ultrasonic sensor is put in the gas flow passage of the ultrasonic type gas meter, and has a flow passage formation part 24a forming a measurement flow passage for the ultrasonic sensor. The unit 24 is provided with an outer wall removed part 24c where a part of the outer wall of the formation part 24a is removed so as to form an aperture communicating with the measurement flow passage, and a mesh plate 27 to be fixed to the removed part 24c so as to close up the whole of the aperture.;COPYRIGHT: (C)2008,JPO&INPIT