F - Mech Eng,Light,Heat,Weapons – 23 – N
Patent
F - Mech Eng,Light,Heat,Weapons
23
N
340/155.1
F23N 5/08 (2006.01)
Patent
CA 1259684
61351-320 ABSTRACT OF THE DISCLOSURE A flame monitor senses flame brightness and produces two signals corresponding to rapid brightness variations and average brightness. By comparing rapid signal variations to a fraction of the average a threshold ON-OFF signal representing normal flame operation is obtained that can be processed as a fail-safe indication and control. High and low limit thres- holds can be set and compared with average brightness as a further condition of proper flame operation.
513445
Electronics Corporation Of America
Smart & Biggar
LandOfFree
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