Apollo 65 Series User manual

Marine Series 65 Base Mounted Marine UV
Flame Detector, Installation Guide
General
The Series 65 (S65) Ultraviolet (UV) Flame Detector, part no 55000-026 MAR, is designed for
use where open flaming fires may be expected. It is sensitive to ultraviolet radiation emitted
by flames during combustion. Since it requires only UV radiation the S65 Flame Detector
responds also to stationary flames with no flicker such as cigarette lighters and blue gas
flames.
Response to flames
The Marine UV Flame Detector signals an alarm state by switching an alarm latch on,
increasing the current drawn from the supply from 550μA to a maximum of about 75mA.
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 1 volt across it and so will illuminate.
Electrical considerations
To ensure correct operation of the detector the control panel must be arranged to supply a
maximum of 33V DC and a minimum of 12V DC in normal operation. The supply may fall to
6V DC in alarm conditions if a supply current of at least 10mA is available at this voltage.
To ensure effective illumination of the integral LEDs and any remote indicator, the supply to
the detector should exceed 12V. To restore the detector to quiescent condition, it is neces-
sary to extinguish any flames in view and interrupt the electrical supply to the detector for a
minimum of one second.
PP2402/2011/Issue 2
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Sensor window contamination
It is important to keep the sensor window clean and checks should be carried out at
regular intervals–determined locally according to the type and degree of contamination
encountered– to ensure optimal performance of the flame detector.
It is recommended that the flame detector be disabled when the window is being
cleaned.
Applications for Marine UV Flame Detectors
Flame detectors are used when detection is required to be unaffected by convection cur-
rents, draughts or wind; tolerant of fumes, vapours, responsive to a flame up to 25m away
and fast reacting.
Typical applications examples are:
• engine room
• factory
• garage
• hospital
• printing
• warehouse
Applications and locations to avoid:
• outdoors
• open windows and doorways
• electric sparks, arcs and welding
• UV lamps
• radiation sources
• prolonged ambient temperatures above 60°C
• exposure to water and ice
• gathering of dust or oil films on sensor window
• flood or spot lighting falling directly on UV optics
• obstructions to field of view
10. Inform all appropriate personnel on completion of the maintenance work and if
necessary record this work.
Technical Data
Supply voltage 12–33V DC (polarity insensitive)
Quiescent current 550μA
Alarm voltage 6 to 33V
Normal alarm current 61mA at 28V
54mA at 24V
20mA at 10V
Remote output characteristics Remote is a current sink to the negative
line limited to 17mA
Alarm indicator Red, Light Emitting Diode (LED)
Design alarm load 420Ωin series with a 2V drop
Hold voltage 6V (min)
Holding current 10mA (min)
Minimum voltage required 12V
to illuminate indicators
Alarm reset voltage <1V
Alarm reset time 1 second
Operating Range 25m for 0.1m² n-heptane fire, EN54-10, class 1
2m for 0.1m² n-heptane fire, EN54-10, class 3
Sensitivity Switch Options class 1 (default) and class 3, as in EN54-10,
clause 5.5
Field of view 90° cone
Spectral response UV 185 to 260nm
Operating temperature –40°C to +70°C (no condensation or icing)
Storage temperature –40°C to +85°C
Relative humidity 0-95% (no condensation)
IP rating 66
Housing material White polycarbonate V-0 rated to UL94
Dimensions 100mm diameter
40mm height, 48mm in base
Weight 150g detector, 210g in base
Additional Equipment
Stainless steel adjustable mount Part no. 29600-458
with deck head box
Portable flame detector test unit Part no. 29600-226
Deckhead Mounting Box Part no. 45681-217
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Functional Testing
Testing the operation of the detector can be achieved in two ways, provided it is safe to do
so:
• A real flame from a portable flickering yellow bunsen flame or cigarette lighter
• A portable flame detector tester unit.
Maintenance Guide
The flame detector is designed to give years of trouble-free operation with minimal atten-
tion. However the periodic maintenance steps listed below are essential to maintain reli-
able fire protection.
1. Inform all appropriate personnel of intention to work on the flame detector.
2. Disable any automatic systems that may be activated by the flame detector if not
required as part of the maintenance check.
Alarms Extinguishers Control
Audio/Visual Gas systems Plant stops
Auto dialers Water sprays Dampers/doors
3. Check that the flame detector’s control panel is functioning correctly and shows no
faults.
4. Inspect the detector viewing window for any build-up of dust or other contaminants
on the optical surface. If necessary clean the optical surface with a cotton wipe wet
with commercial liquid glass cleaner, but not polishes. Rinse with clean water and dry
with a clean cloth.
The detector specification for performance is with a clean optical sensor window.
Contaminants like dust, oil and paint will reduce sensitivity.
5. Ensure the detector still has a clear line of sight of the area it is protecting and no
obstacles obstruct its view.
6. Check that the detector is securely fitted.
7. Visually check the exterior of the detector for any mechanical or corrosive damage.
8. Test the operation of the detector with either a portable flame sensor test unit or if
practical a flame.
9. Reinstate any automatic system disabled during maintenance.
Quantities required and positioning of detectors
The number of detectors required and their positioning depends on:
• the anticipated size of the flame
• the distance of the flame from the detector and
• the angle of view of the flame detector
The flame detector is designed to operate to Class 1 performance as defined in EN54-10.
The detector will, therefore, detect a flame of approximately 0.1m² or a clear flame of
0.25m² at 25m.
In fact, the flame detector will detect fires at distances of up to 40m, but the flame size at
such distances needs to be proportionally greater in order to be sure of reliable detection.
Thus the flame that can be detected at 25m, provided that its size is not less than 0.1m², will
have to be 0.4m² in order to be detected at 40m. In a rectangular room the distance from
the flame detector to the fire is calculated by the formula:
L² + W² + H²
In the example shown in Fig 1 the room in which the flame detector is to be installed meas-
ures 20m x 10m x 5m; the distance from the detector to the flame will therefore be:
20² + 10² + 5²
Height
Width
Length
© A
p
ollo Fire Detectors Limited 2000-2010/RHD/TB
Fig 1 Calculation of distance from detector to flame
The flame detector should be positioned at the perimeter of the room, pointing directly
at the area of the anticipated flame or at the centre of the area to be protected. If the
detector cannot ‘see’ the whole of the area to be protected, one or more additional
detectors may be required.
The flame detector is not affected by most normal indoor light sources but should be posi-
tioned so that daylight is not in view.
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Sensitivity setting
The sensitivity switch is available and is used to set the sensitivity of the flame detector to
class 1 or class 3. For most practical purposes the switch should be set to class 1 (default
setting), the sensitivity required to detect flames as described in the section ‘Quantities
required and positioning of detectors’, page 3.
In exceptional cases the flame detector may be set to class 3 operation in order to avoid
nuisance alarms being caused by radiation sources that are close to the detector and can
not be moved. The rotary sensitivity switch is located on the detector rear behind the label.
To set to class 3, rotate the switch 90° clockwise. To return the sensitivity switch to the class 1
setting, rotate the switch 90° counter clockwise.
Installation
The flame detector is mounted on any Series 65 base and would normally be wall or ceiling
mounted preferably on an adjustable bracket to adjust the angle of view.
The standard base mounting is used for horizontal viewing, eg, along corridors or along the
length of industrial processes or vertical viewing inside fume cupboards or over hoppers.
Flame detectors should be fitted to solid walls or rigid constructions that do not move and
are not subject to vibration.
If fitting to an XP95 Zone Monitor do not fit more than one device per zone.
If fitting to a conventional control panel, please verify the quantity per zone with the
chosen panel manufacturer.
Wiring
The flame detector has five connections: L1 IN, L1 OUT, L2, -Remote and functional earth/
screen. The connections are accessed by removing the detector from its base. See Fig 4 for
connection diagram.
To meet the requirements of EN54-10 clause 5.4, where the ratio of the response points
Dmax:Dmin should not exceed 1.41. The horizontal and vertical viewing angles αmax should
not exceed ± 40°.
The Marine UV Flame Detector has an angle of view of approximately 90°, as shown in the
diagram below.
Fig 3 Angle of view of Marine UV Flame Detector
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n
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n  





MÁFLAMESEEN
ATMINSTRAIGHTLINE
F
ROMFLAMEDETECTOR
MÁFLAMESEEN
ATMINSTRAIGHTLINE
F
ROMFLAMEDETECTOR
MÁFLAMENOTSEEN
ATMSINCEITISNOT
INTHEFIELDOFVIEWOF
T
HEFLAMEDETECTOR
M M
CENTRELINEOFDETECTOR DETECTIONOFMÁFLAME
DETECTIONOFMÁFLAME
© Apollo Fire Detectors Limited 2000-2005/RHD
The Marine UV Flame Detector can also be ceiling mounted, positioned above the antici-
pated flame source or at the centre of the area to be protected, perpendicular to the
floor below. If the detector cannot see the whole of the area to be protected, one or more
additional detectors may be required. Refer to the angle of view diagram Fig. 3 to establish
the detector performance. The area of detection is dependent on the detectors height
above the likely source of flame. The detector has a 90° conical field of view or 45° either
side of the viewing axis centre line. The maximum ceiling height is 20m. If the detector is
perpendicular to floor and at a height of 10m then the detector will view a circular floor
area below with a 10m radius (20m diameter circle).
Vertical Plane Ceiling
5m
10m
15m
20m
Floor
Plan View
10m Dia.
20m Dia.
30m Dia.
40m Dia.
Height
© Apollo Fire Detectors Limited 2009/TP
Fig 2 Ceiling mounting example
Fig 4 Marine UV Flame Detector base connections
+
From control panel To next device
L2
L1 OUT
R–
EARTH
–
L1 IN
© Apollo Fire Detectors Limited 1997-2011/RHD/TB/EKC
Terminal Descriptions
1 L1 IN +Line IN
2 L1 OUT +Line OUT
3 L2 – Line IN and OUT
4 –R –Remote LED
5 EARTH Functional Earth/Screen (Isolated)
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