| CPC F16L 41/008 (2013.01) [G01L 19/0007 (2013.01); G01L 19/0092 (2013.01)] | 11 Claims |
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1. An attachment for a fluid characteristic measurement sensor interposed between end portions of cut metal tubes formed by cutting the metal tube constituting a fluid flow path, the attachment comprising:
a body having a pair of first opening portions through which a body flow path extends and the body flow path opens, at least one sensor that measures a characteristic of a fluid flowing through the body flow path being attached in advance to the body via sealant; and
a pair of connection members attached to respective portions of the body where the pair of first opening portions are positioned, the pair of connection members being joined to the end portions of the metal tubes to connect the fluid flow path and the body flow path, the pair of connection members are flanges having a pair of second opening portions through which a flange flow path extends and the flange flow path opens; and
a positioning portion that coaxially positions the body flow path and the flange flow path on the body and the flange,
wherein the positioning portion comprises a large diameter portion and an insertion tube portion, the large diameter portion is disposed in an end portion of the body flow path and has an inner diameter larger than an inner diameter of the body flow path, the first opening portion is positioned in an inside of the large diameter portion such that the body flow path extending through the body is formed to extend through at an inner diameter same as that of the fluid flow path, the insertion tube portion is disposed to project from the flange and insertable into the large diameter portion, and the flange flow path extends through the insertion tube portion, and
wherein the body, which is separate from the metal tube, is formed as one of a cube-shaped block, a cylindrical block and a polyhedral block.
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