Differential fire and explosion protection system
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United States of America Patent
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-
Apr 14, 1992
Issued Date -
N/A
app pub date -
Sep 23, 1991
filing date -
Jul 2, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A differential fire and explosioin protection system is for a containment enclosure which receives pneumatically conveyed process air containing a combustible media. A pair of temperature sensors located in opposed relationship in the outlet duct of containment enclosure are responsive to changes in the outflow temperature at different rates. One temperature sensor has a thin metallic sheathed probe, while the other sensor is provided with a relatively thick wall sleeve in surrounding relationship to the probe. Control means connected to the temperature sensors is adapted to activate fire and/or explosion suppression or isolation equipment in response to a predetermined differential in temperature as sensed by the sensors during a certain time interval.
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