Device for measurement of corrosiveness of smoke

Details Device for measurement of corrosiveness of smoke Device for measurement of corrosiveness of smoke

1987-07-20

1988-12-06

Richman, Barry S.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Corrosion tester

422101, 422102, G01N 1700, B01L 1100, B01L 300

Patent

active

047895241

ABSTRACT:
A device for measuring the corrosiveness of smoke, comprising a chamber, means for creating in the chamber an atmosphere of air of predetermined humitidy, heating means for heating the said atmosphere and walls of the chamber to a predetermined temperature, means for causing the combustion of a sample of material in the chamber, water circulation cooling means for condensing the smoke and products of pyrolysis generated by the said combustion onto a resistive metallic element exposed inside the chamber, the measurement of the corrosiveness of the smoke being carried out by measuring the variation in electrical resistance of the said element. The chamber comprises: a cylinder of methyl polymethacrylate open at its two ends; two thermally insulating end doors, constituted by an assembly of methyl polymethacrylate panels separated by interstitial air, and means for thermal insulation and gas-tightness between the doors and the cylinder, and heating means comprising a resistive metallic wire wound in a helix on the external periphery of the cylinder.

REFERENCES:
patent: Re25932 (1965-12-01), Neffenger
patent: 3163497 (1964-12-01), Gill
patent: 3259466 (1966-07-01), Jacks, Jr.
patent: 3957440 (1976-05-01), Aussieker
patent: 4600695 (1986-07-01), Cummings et al.
patent: 4683035 (1987-07-01), Hunt et al.
Centre National d'Etudes des Telecommunications, "Presentation de l'essai Corrosivite mis au point au CNET-LAB-SERV/ENV".
Methodes D'Essais, Comportement Au Feu, "Determination de la corrosivite des fumees".

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