Index - Photain Index
|* Low Profile Aesthetic Design
||* Dual Chamber Single Ionisation Source
|* Surface Mounted high reliability technology
||* LED Alarm Indication
|* Integral Locking Facility
||* Remote indicator connection
|* Advance immunity against insect ingress
||* Surface and Recess Base Mounting
The ISD ionisation type smoke detector is capable of
detecting products of combustion even before the presence
of visible smoke.
This detector is the result of extensive development
and work, with stability and reliability as the primary
objective, while at the same time maintaining the sensitivity
requirements of the major approving authorities.
The chamber automatically compensates for changes in
humidity, temperature and pressure.
The objective was achieved having a fully encased solid-state
printed circuit incorporating a high level of protection
against electrical interference and line transients.
A high level of immunity to air draughts has also been
built in to this detector.
Products of combustion smoke detector
Balanced chamber, single radioactive source
(33.3 kilo becquerels)
15 - 30vDC
Less than 60 microAmps
Red light emitting diode illuminated continuously
Remote alarm output:
Rated at 50mA max.
Responds to all types of fire tests as per EN54 Part7
-10 to 75° C
Up to 95% R.H.
Up to 15m/s maximum continuous
To EN54, Part 7, annex L
To EN54, Part 7, annex O
To EN54, Part 7, annex N
500v spikes rise time 2 microseconds
Detector in Base Assembly
This detector is approved to EN54-7, BS5445 Part 7.