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Aspirating Smoke Detection

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Aspirating Smoke Detection TECHNOLOGY PRESENTATION AirSense Technology USA Limited April, 2007 Agenda Introduction Speaker: Steven Joseph Company: AirSense Technology ... – PowerPoint PPT presentation

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Title: Aspirating Smoke Detection


1
Aspirating Smoke Detection
TECHNOLOGY
PRESENTATION
AirSense Technology USA Limited April, 2007
2
Agenda
  • Introduction
  • Technology
  • Applications
  • Questions Answers
  • Contacts

AirSense Technology USA Limited April, 2007
3
Introduction
  • Speaker Steven Joseph
  • Company AirSense Technology Limited

Introduction
  • Speaker Profile
  • Steven Joseph, CEO AirSense Technology USA Ltd
  • Company Profile
  • Industry Pioneers
  • Global Operations
  • ISO 9001 Quality Assurance Accredited
  • Award winning technology

The Queen's Award for Technological and Export
Achievement
4
Technology Overview
  • Aspirating Smoke Detection Systems
  • System description
  • Advantages over traditional detection methods
  • Legacy Systems
  • Limitations
  • Maintenance
  • Performance
  • System Evolution
  • Advances in technology
  • New generation equipment
  • Fixed Vs Relative Sensitivity Systems
  • How they compare?
  • ClassiFire

Technology Overview
5
Aspirating Smoke Detection
  • Aspirating smoke detection (also known as Air
    Sampling) is a method of smoke detection, whereby
    a sample of air is continuously drawn from the
    protected area through a network of sampling
    pipes, and passed through the detection chamber
    of a centrally located detection unit.

Technology Overview
6
Legacy Systems and Applications
  • Limitations
  • Sensitivity Range
  • Application limitations
  • Communication system management
  • Supervision
  • Cost
  • Degradation
  • Optical system integrity
  • Sensitivity drift
  • Maintenance
  • Recalibration
  • Limited knowledge of technical staff
  • Lack of maintenance
  • Applications
  • Limitations
  • Misapplied

Technology Overview
7
System Evolution
  • Advances in technology
  • Smaller packaging
  • Improved optical systems
  • Advanced signal processing techniques resulting
    in more reliable detection
  • Wider sensitivity range
  • Efficient long life aspirators
  • Lower power consumption
  • Enhanced system supervision
  • Advanced communication and system management
    techniques
  • Wider product range
  • Longer product life
  • Lower system cost
  • Industry awareness and acceptance
  • Skilled technicians
  • Appropriately specified and applied
  • Lower maintenance cost

Technology Overview
8
New Generation Technology
  • High sensitivity provided by laser based forward
    light scatter mass detection and particle
    evaluation for reliable very early warning
    detection.
  • Particle sensitivity range 0.003µ to 10µ
  • Industries widest sensitivity range 0.00046 to
    7.62 obs/ft
  • Four programmable alarm thresholds (Aux,
    Pre-Alarm, Fire 1 and Fire 2)
  • Relative vs fixed sensitivity through an advanced
    Perceptive Artificial Intelligence system known
    as ClassiFire
  • Dual Technology Laser Dust Discrimination and
    elimination system.
  • RS485 communications built in as standard for
    networking and remote communications. Up to 127
    detectors per loop, 4000 ft between devices.
  • RS232 built in for direct PC interface
  • Powered by 24-Volt DC regulated supply, low
    current draw

Technology Overview
9
Detection Chamber
Technology Overview
The quantity of light scattered increases with
greater quantities of smoke particulate present
10
Fixed Vs Relative Sensitivity
  • The unique technology employed in Stratos
    Aspirating Smoke Detection Systems uses relative
    sensitivity to establish appropriate alarm
    thresholds.
  • The sensitivity is determined by the ambient
    smoke level of the protected area.
  • All other systems have their sensitivity (the
    amount of smoke required to produce an alarm)
    fixed during manufacture or during commissioning.
  • Why is this a problem?

Technology Overview
  • Sensitivity settings are arbitrarily set and
    often times misapplied
  • Must be manually altered, and are constantly out
    of date
  • Filter loading or optic contamination diminishes
    smoke level reaching or being processed by the
    detector
  • Sensitivity to a fire varies with changing
    ambient conditions

11
Fixed Sensitivity Detectors
Using historical data or pre-designated
sensitivity set points, the installer selects
FIXED sensitivity set points typically above the
highest smoke density the detector has
registered. These set points will REMAIN at that
level until manually altered.
As normal activity changes within the
environment, the detector is prone to false
alarms if the ambient level ever approaches or
rises higher than the FIXED sensitivity set points
Technology Overview
As filter loading occurs or the activity within
the environment changes, a trend of reducing
ambient smoke level will result in the detector
becoming less and less sensitive!
The TRUE sensitivity (the difference between
ambient and alarm levels) will vary because the
alarm point is fixed.
Smoke Density
0 to 2 Weeks
1 Month
1 Year
Time
Time
12
ClassiFire Relative Sensitivity
  • ClassiFire is a patented Perceptive Artificial
    Intelligence process controlling all aspects of
    the system, ensuring the maximum safe sensitivity
    regardless of ambient conditions.
  • An absolute minimum of installer programming is
    necessary. The risk of setting inappropriate
    thresholds is avoided.
  • ClassiFire Provides and Maintains the optimum
    Sensitivity for the Protected Area, continuously.

Technology Overview
13
ClassiFire Relative Sensitivity
The initial 15 minute FastLearn process
provides a starting point for the detector
sensitivity
During the first 24 hours, ClassiFire will
increase the TRUE sensitivity until the best
safe position is reached, determined by the
Alarm Factor
ClassiFire will then maintain that sensitivity,
regardless of changes in ambient smoke density
Technology Overview
Smoke Density
15 Minutes
1st 24 Hours
1 Month
1 Year
Time
14
ClassiFire Turning Challenges Into Solutions
APPLICATION
SOLUTIONS
15
Applications
  • With the advent of next generation Aspirating
    Smoke Detection Systems which feature a wide
    sensitivity range and advanced artificial
    intelligence features, such as ClassiFire,
    reliable very early warning smoke detection is
    now possible in a wide range of applications.
  • Where very early warning detection is required
  • Where high air flow is present
  • Where the environment is hostile (very cold, very
    hot, wet or dusty, strong RF fields or
    contaminated)
  • Where detection is to be concealed for aesthetic
    or covert considerations
  • Where there are areas subject to smoke
    stratification
  • Where access for maintenance is impractical or
    impossible
  • Where reliable detection is required for
    suppression release

Applications
16
Hostile Environments
  • By nature of the system, an aspirating smoke
    detection system, such as Stratos, has no need to
    be located within the area to be protected, as
    the air is transported to the detector(s) via
    sampling pipes. This means ASD can often be used
    in areas of extreme heat, cold, humidity, high
    levels of RF interference or in contaminated
    areas.
  • The Stratos range of detectors incorporate Laser
    Dust Discrimination (LDD). This means that it is
    possible to provide highly effective smoke
    detection in dusty hostile environments with
    minimum risk of false alarms
  • Textile areas
  • Power Generation Plants
  • Cold Frozen Storages
  • Paper mills / tissue production
  • Flour mills
  • Wood recycling
  • Recycling Centers
  • Metro Tunnels
  • Cable tunnels
  • Coal conveyers
  • MRI rooms

Applications
17
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20
Maintenance Access Issues
  • Accessibility to traditional spot type smoke
    detectors is required for ongoing maintenance and
    testing. This can be impractical in a large
    number of applications as access equipment might
    be required or areas may be restricted for
    access.
  • Aspirating detectors can be strategically located
    facilitating ease of maintenance.
  • Atria
  • Above Industrial process equipment
  • Classified areas
  • Cleanrooms
  • Ceiling voids and below raised floors
  • Escalators
  • Warehouses
  • Record Storage Facilities

Applications
21
In-Cabinet Detection
Applications
22
Questions Answers
THANK
YOU
  • Additional Resources
  • Website
  • www.airsense.us
  • Application Guides
  • Product Manuals
  • Software Downloads
  • Literature
  • White Papers

Presentation Download www.airsense.us/marketing/S
tratosPresentation.zip
23
Contacts
UNPARRALEL
SUPPORT
Michael Crovo District Manager Eastern
Region AirSense Technology USA LTD 859 Willard
Street, 400 Quincy, MA 02169-7482 (781) 353-6483
ph. (508) 809-9932 fx. mike.crovo_at_airsense.us www
.airsense.us
Steven Joseph Director of Sales North
America AirSense Technology USA LTD 10260 SW.
Greenburg Rd. Suite 400 Portland, OR
97224 503-293-7652 ph. 503-641-1253
fx. steve.joseph_at_airsense.us www.airsense.us
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