Series 65 - Apollo Fire Detectors

Series 65 - Apollo Fire Detectors
PP2613/2017/Issue 1
Series 65
Optical Smoke Detector
Technical data
All data is supplied subject to change without notice. Specifications
are typical at 24 V, 23°C and 50% RH unless otherwise stated.
Detection principle
Photo-electric detection of light
scattered in a forward direction by
smoke particles
Chamber configuration
Horizontal optical bench housing an
infrared emitter and sensor arranged
radially to detect scattered light
Silicon PIN photo-diode
GaAs infra-red light emitting diode
Sampling frequency
Once every three seconds
Confirmation frequency
Once every two seconds
Supply Wiring
Two wire supply, polarity insensitive
Terminal functions
and L2
Supply in connections
and L2
Supply out connections
Remote indicator negative
Product overview
Optical Smoke Detector
Part No.
Optical Smoke Detector with flashing LED
Part No.
Optical Smoke Detector with magnetic test switch and flashing LED
Part No.
Supply voltage
9 V to 33 V dc
Ripple voltage
2 V peak to peak maximum at 0.1 Hz
to 100 kHz
Quiescent current
30 - 50 µA at 24 V
Power-up surge current
115 µA at 24 V
Alarm voltage
6 V to 28 V
Normal alarm current
61 mA at 28 V
52 mA at 24 V
18 mA at 10 V
Alarm indicator
Clear light emitting diode (LED)
emitting red light
Alarm LED current
4 mA
Remote output characteristics Remote is a current sink to the
negative line limited to 17 mA
Product information
Nominal alarm threshold of 0.15
dB/m obscuration, measured in
accordance with EN 54-7
Operating temperature
-20°C to + 60°C
• Responds well to slow burning, smouldering fires
0% to 95% RH (no condensation or
• Well suited for bedrooms and escape routes
Effect of atmospheric
Effect of wind speed
Vibration, impact & shock
EN 54-7
IP Rating
Standards & approvals
EN 54-7, LPCB, VdS, DIBt, BOSEC, FG,
100 mm diameter x 42 mm height
(50 mm high with mounting base)
99 g
150 g with base
Housing: White polycarbonate
The Series 65 Optical Smoke Detector uses the scattered light
principle to ‘see’ smoke entering the chamber located within the
detector housing.
• Unaffected by wind or atmospheric pressure
• Flashing LED and magnet operated test switch option on
selected detectors
36 Brookside Road, Havant
Hampshire, PO9 1JR, UK.
Assessed to ISO 9001:2008
Cert/LPCB ref. 010
Assessed to ISO 14001:2004
Cert/LPCB ref. 010 EMS
Tel: +44 (0)23 9249 2412
Fax: +44 (0)23 9249 2754
Cert/LPCB ref. 010
© Apollo Fire Detectors Limited 2017
Terminals: Nickel plated stainless
Operating principles
The Series 65 Optical Smoke Detector has a moulded selfextinguishing white polycarbonate case with wind resistant smoke
inlets. Inside the case a printed circuit board has the optical system
mounted on one side and the signal processing electronics on the
other. The sensing chamber is a moulding configured as a labyrinth
which prevents penetration of ambient light. The labyrinth has a
fine gauze insect-resistant cover. The chamber houses an infrared
light emitting diode (LED) and a photo-diode which has an integral
visible-light filter as an extra precaution against ambient light.
Every three seconds the LED emits a burst of collimated light,
modulated at 4 kHz. In clear air light from the LED does not fall
directly on the diode because the LED is positioned at an obtuse
angle to the diode.
When smoke enters the chamber a fraction of the collimated light
is scattered onto the photo-diode. If the resulting signal from the
photo-diode is above a pre-set threshold the LED emits two bursts
of light, this time at two-second intervals. If light is scattered
onto the photo-diode by both these pulses - due to the presence
of smoke - the detector signals an alarm state by switching the
alarm latch on increasing the current drawn from the supply from
about 40 µA to a maximum of 75 mA. This fall in the impedance of
the detector is recognised by the control panel as an alarm signal.
The alarm current also illuminates the detectors integral LED. A
remote indicator connected between the L1 IN terminal and the -R
terminal will have a voltage equal to the supply voltage less one
volt across it and so will illuminate.
To ensure correct operation of the detector the control panel must
be arranged to supply a maximum of 33 V dc and a minimum of
9 V dc in normal operation. The supply may fall to 6 V dc in alarm
conditions if a supply current of at least 10 mA is available at this
voltage. To ensure effective illumination of the integral LED and
any remote indicator the supply to the detector should exceed 12 V.
To restore the detector to quiescent condition it is necessary to
expel any smoke and interrupt the electrical supply to the detector
for a minimum of one second.
Environmental characteristics
The Optical Smoke Detector is unaffected by wind or atmospheric
pressure and operates over the temperature range -20°C to +60°C.
EMC Directive 2014/30/EU
The Series 65 Optical Smoke Detector complies with the essential
requirements of the EMC Directive 2014/30/EU, provided that it is
used as described in this datasheet.
A copy of the Declaration of Conformity is available from Apollo
upon request.
Conformity of the Series 65 Optical Smoke detector with the EMC
Directive does not confer compliance with the directive on any
apparatus or systems connected to it.
Construction Products Regulation 305/2011/EU
The Series 65 Optical Smoke Detector complies with the essential
requirements of the Construction Products Regulation 305/2011/EU.
A copy of the Declaration of Performance is available from Apollo
upon request.
Series 65 Optical Smoke Detector diagram
Response characteristics of Series 65 Optical Smoke Detector
Type of fire
Overheating/thermal combustion
Optical Smoke Detector
Very Good
Smouldering/glowing combustion
Flaming combustion
Very Good
Flaming with high heat output
Very Good
Flaming - clean burning
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