| 摘要 |
PURPOSE:To easily attach and detach an oscillator unit and to also clean the inside of a measurement pipe by fitting a shield pipe which holds a packing material and a heater in the oscillator housing of the measurement pipe detachably, and engaging a lid with its rear end part threadably. CONSTITUTION:The oscillator housing 2 is formed on the pipe wall of the measurement pipe 1 and the ultrasonic oscillator unit 3 is put therein. In this case, the 1st shield plate 12 is fixed on the inner-diameter surface of the oscillator housing 2 in contact and the 2nd shield plate 13 is fitted inside of it detachably. The 2nd shield plate 13 holds the heater 15 and packing material 6 and an ultrasonic oscillator 5 is supported at the top of the packing material 6. Further, the opening end of the oscillator housing 2 is thread-cut and the lid pat 20 is engaged threadably. Consequently, the oscillator unit 3 is easily attached and detached and the inside of the measurement pipe 1 is easily cleaned as well.
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