Kidde Fire Systems DS Series, Инструкция по применению

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K-76-1000 -28- July 2016
Regardless of the principle of operation, smoke detectors sense the presence of smoke particles. In order
for a smoke detector to sense these particles, smoke must travel from the point of origin to the detector.
When evaluating a particular building or location for detector layout, determine likely fire locations and
paths of smoke travel from each of these fire locations. Wherever practical, conduct actual field tests. The
most desired location for smoke detectors is the common points of intersection of smoke travel from fire
locations throughout the building. Ceiling height, construction, and ventilation play significant roles in
smoke detector performance.
The DS-PS photoelectric smoke detector has a wide range of fire sensing capabilities and is best suited
for detecting slow, smoldering fires such as wood pyrolysis and smoldering cotton.
Avoidance of False Alarms
Smoke detectors are sensitive to a number of environmental factors (other than smoke), which may
inadvertently activate the detectors. Careful consideration of the environment in which a detector is
installed minimizes unwanted detector activation (nuisance alarms). When locating smoke detectors,
consider common sources of false alarms:
•
Cooking equipment
• Welding, cutting, and industrial processes
• Chemical fumes
• Dust
• Engine exhaust
• Vibration
• Excessive airflow
• Lightning and power outages
• Lighting fixture and other electrical equipment that may emit noise/EMF
• Radio frequency transmissions
• Steam and moisture
Note: The DS-PS smoke detector provides automatic environmental compensation, which reduces the
occurrence of false alarms by allowing sensing elements to adapt to long-term environmental
changes, caused by dirt, smoke, temperature, and humidity.
Table 4. Suitability of DS-PS Photoelectric Detector for Various Applications
Type of Fire Suitability of detector
Open wood Unsuitable
Wood pyrolysis Optimal
Smoldering cotton Optimal
PU foam Very Suitable
N-heptane Very Suitable
Liquid fire without smoke Unsuitable