Lens holder

Details Lens holder Lens holder

1976-03-24

1977-04-26

Husar, C. J.

Heat exchange

Regenerator

Cleaning

165 11, F28D 1904

Patent

active

040195678

ABSTRACT:
A holder for apparatus that is positioned in an air preheater to detect an increase in infra-red ray emission therefrom indicating a temperature rise that precedes conditions conducive to a fire in the air preheater.

REFERENCES:
patent: 3730259 (1973-05-01), Wixson et al.
patent: 3861458 (1975-01-01), Ostrander et al.

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