Types of heat detection include thermal, infrared and linear heat.
A heat detector, whether fixed-temperature or rate-of-rise, or linear, is an excellent device for early fire warning. A heat detector is a highly effective component of a fully-comprehensive fire alarm system. We carry a number of excellent devices, each with their own inherent advantages. It may be confusing to know if you should install a heat detector vs smoke detector so let us explain how fire detectors and smoke detectors work.
Find out how a heat detector completes a circuit and how it signals a fire.
Heat detectors are activated when their heat sensors exceed a specific temperature or temperature range. Smoke detectors, simply put, detect the smoke that is created by heat.
Fixed-temperature heat detectors are most common. When ambient heat in a room exceeds a specific temperature — usually 47°C; the solid sensor within the unit converts to a liquid, triggering alarm activation. Fixed temperature heat detectors work well in rooms where temperatures fluctuate, such as boiler and utility rooms.
Rate-of-rise heat detectors are based on a slightly different technology. There are two sensors in the unit, one measures heat transferred and the other measures ambient heat. The alarm is triggered when the first sensor’s temperature increases relative to the second. We highly recommend these units in installations that cover a large area, or remain at a constant temperature.
Combination rate-of-rise and fixed temperature devices also exist, maximizing early fire detection.
Linear systems are a little more specialized. They’re basically lengths of heat-sensitive cable connected to the central fire alarm system. They work well in hard-to-access places, such as in ceilings, or in very close proximity to fire hazards.
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If you’re unsure what type of heat detector will work best for your specific building or operation, we’re happy to help. Contact us today via our form to the left or call 604-590-0149.
There has recently been an important product recall on the Gems 3100 Pressure Detectors/Transducers. Anyone currently using this product is to stop using it ASAP so as to prevent injury or death. It is also prohibited to re-sell a recalled product. There were aproximitely 25,000 units sold between January 2006 through February 2012 for about $250.
This product regulates water pressure as part of a fire pump controller in a fire suppression sprinkler system. The transducer for the 3100 product series has been reported to incorrectly detect water pressure in the event of a fire.
All consumers are being asked to contact Gems directly to receive a bi-monthly inspection and information for a free replacement transducer, if approved. They can be reached toll-free at (855) 877-9666, between 8a.m. and 4:30 p.m. Eastern Time, Monday through Friday.
The US Consumer Product Safety Commission (CPSC) is currently accepting incident reports. They can be reached at 1-800-638-2772. There are currently no injuries reported.
Please contact us at Active Fire & Safety Services if you would like more information. 604 590-0149