Smoke Alarm User Manual

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Note: This document is based on the recommendations of BS5839 Part 1: 2002. It is intended only as a guide to the application of fire detection systems.
Reference must be made to relevant national and local standards.
System Sensor Intelligent Product Range
7251 LASER DETECTOR
The Pinnacle high sensitivity laser based intelligent smoke
sensor is a unique offering from System Sensor that provides
extremely high sensitivity to fire conditions, by detecting the
earliest particles of combustion. This is achieved by combining
a patented optical chamber with the latest in laser diode and
precision optics technology, which enhances the sensitivity
of the device. The chamber is also linked to sophisticated
processing circuitry that incorporates smoothing filters to help
eliminate transient environmental noise conditions, which
can be the cause of unwanted alarms. The result is a very
sensitive but stable sensor that can achieve sensitivities of
0.006% to 0.6% per metre obscuration and provides up to 100
times more sensitivity than a standard photoelectric smoke
sensor. With its quick response and pinpoint accuracy, this
unique sensor is ideally suited to environmental applications
where there is substantial cost for downtime or a significant
investment in installed equipment has been made (e.g.
Electronics Manufacturer Clean Rooms, Telecommunication
Rooms, Computer Rooms etc.).
The sensor’s performance is improved even further by the
inclusion of special drift compensation algorithms, which
compensate for the build up of contamination in the sensing
chamber. There are three stages of drift compensation, ‘low
level alert’, ‘high level alert’ and ‘maintenance urgent’. The
‘low and high level alert’ signals are used to identify that
the Pinnacle sensor has accumulated significant amounts
of airborne particles and requires maintenance, whilst the
‘maintenance urgent’ signal indicates that the sensor has
reached the end of its compensation range.
Tested and approved to EN54-7: 2000
Specifications
Operating Voltage: 15 to 32VDC
Max Standby Current: 230µA at 24VDC (No communications)
Operating Temperature: -10°C to 55°C
Weight: 142g