| 摘要 |
<p>Recessed parts (6, 6) having flat bottom surfaces depressed outward further than the inner diameter (f) of a measurement pipe (1) are so formed as to face the inner peripheral surface (5) of the measurement pipe (1). The edge surfaces around the recessed parts (6, 6), which form boundary parts between the inner peripheral surface (5) of the measuring pipe (1) and the recessed parts, are so arranged to be smoothly connected with the inner diameter (f) of the measurement pipe (1) by tapers or round curved surfaces. Through-holes (6b, 6b) are formed in the bottom surfaces (6a, 6a) of the recessed parts (6, 6). Signal electrodes(7, 7) are mounted to the recessed parts (6, 6) of the measurement pipe (1) with gaskets (8, 8) interposed between the rear surfaces of plate-like electrode parts (7a, 7a) and the bottom surfaces (6a, 6a) of the recessed parts (6, 6). When a lining (3) is made of Teflon, the gaskets (8) can be eliminated.</p> |
