FIELD: fire alarm systems, particularly to detect optical air density from infrared radiation dissipation intensity.
SUBSTANCE: smoke fire detector has electronic circuit, which provides conditions to avoid discharge pulse forming at the same optical air density values.
EFFECT: increased stability of detector sensitivity.
3 dwg
Title | Year | Author | Number |
---|---|---|---|
SMOKE FIRE DETECTOR | 2004 |
|
RU2273887C1 |
SMOKE-SENSITIVE ALARM | 2006 |
|
RU2306614C1 |
SMOKE DETECTOR | 2005 |
|
RU2294018C2 |
SMOKE FIRE ALARM | 2005 |
|
RU2295159C1 |
SMOKE-SENSITIVE ALARM | 2006 |
|
RU2306613C1 |
SMOKE FIRE ALARM | 2005 |
|
RU2305325C1 |
SMOKE FIRE ALARM | 2007 |
|
RU2356094C1 |
SMOKE AND FIRE ALARM | 2003 |
|
RU2250505C1 |
SMOKE ALARM | 2013 |
|
RU2559729C2 |
FIRE DETECTOR | 2007 |
|
RU2420809C2 |
Authors
Dates
2006-04-10—Published
2004-09-30—Filed