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Heat Detectors

 

Heat detectors offer protection in areas such as kitchens, saunas and garages laundry room or attic where the environment is dirty or smoky under normal conditions or where there is a high presence of airborne particles such as water vapour or exhaust fumes.Heat detectors are commonly marked "Not a life safety device". Heat detectors are not meant to replace smoke detectors in life safety applications like in bedrooms.

Heat detectors are divided into two groups; rate-of-rise and fixed temperature

Rate-of-rise heat detectors

Rate-of-rise (ROR) heat detectors react to the sudden change or rise in ambient temperature from a normal baseline condition. Any sudden temperature increase that matches the predetermined alarm criteria will cause an alarm. This type of heat detector can react to a lower threshold condition than would be possible if the threshold were fixed. A typical alarm may sound when the rate of temperature rise exceeds 12 to 15F (6.7 to 8.3C) per minute.

Fixed temperature heat detectors

This type of detector reacts when the ambient temperature reaches a fixed point. The most common fixed temperature point is 58C or 136.4F.

 

Copyright 1997- 2010
Information in this document is subject to change without notice.
Other products and companies referred to herein are trademarks or registered trademarks of their respective companies or mark holders.
UPDATE 18-Jan-2010
MMC&S Inc.

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