FASTENING STRUCTURE FOR BRITTLE-FRACTURABLE PANEL AND METHOD FOR FASTENING LIGHT TRANSMISSION WINDOW PANEL COMPRISING BRITTLE-FRACTURABLE PANEL EMPLOYING SAME

摘要

The present invention aims to simplify the structure of the concentration meter used in the supply system of the organic raw material fluid, to reduce the size, to reduce the product cost, to keep the transparency of the light transmission window constant and to measure the concentration stably, Thereby providing a densitometer that enhances the internal particleity. The present invention relates to an optical analyzer type flow rate concentration detector comprising a detector body 2, a light transmitting portion 5a provided on the upper surface of the detector body, and a light detecting portion 5b provided on the lower surface of the detector body, A concave portion 17 communicating with the fluid passage 2b provided on the upper and lower surfaces thereof, a gasket type seal 6 mounted in the concave portion 17 and a gasket type seal 6 disposed opposite to the gasket type seal 6, A first fixing flange 14 and a second fixing flange 16 which are tightly fitted and fixed to the light transmitting window board 11a and an optical fiber 9 and a photodiode 10 provided in the second fixing flange 16 And a holding fixture 12 that hermetically fixes the fixed flanges 14 and 16 to be fitted and fixed in the hollow section 17 of the detector body 2 through the gasket type seal 6.;