Apollo 65 Series Panduan Instalasi - Halaman 4

Jelajahi secara online atau unduh pdf Panduan Instalasi untuk Sensor Keamanan Apollo 65 Series. Apollo 65 Series 4 halaman. Base mounted marine uv flame detector

Halaman Cetak

The Marine UV Flame Detector can also be ceiling mounted, positioned above the antici-

pated ﬂ ame source or at the centre of the area to be protected, perpendicular to the

ﬂ oor 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 ﬂ ame. The detector has a 90° conical ﬁ eld of view or 45° either

side of the viewing axis centre line. The maximum ceiling height is 20m. If the detector is

perpendicular to ﬂ oor and at a height of 10m then the detector will view a circular ﬂ oor

area below with a 10m radius (20m diameter circle).

Vertical Plane

Plan View

10m Dia.

20m Dia.

30m Dia.

40m Dia.

Fig 2 Ceiling mounting example

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

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 α

not exceed ± 40°.

www.acornfiresecurity.com

Ceiling

10m

15m

20m

Floor

should

max

www.acornfiresecurity.com

Sensitivity setting

The sensitivity switch is available and is used to set the sensitivity of the ﬂ ame 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 ﬂ ames as described in the section 'Quantities

required and positioning of detectors', page 3.

In exceptional cases the ﬂ ame 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 ﬂ ame 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 ﬁ tted to solid walls or rigid constructions that do not move and

are not subject to vibration.

If ﬁ tting to an XP95 Zone Monitor do not ﬁ t more than one device per zone.

If ﬁ tting to a conventional control panel, please verify the quantity per zone with the

chosen panel manufacturer.

Wiring

The ﬂ ame detector has ﬁ ve 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.

From control panel

–

Fig 4 Marine UV Flame Detector base connections

Terminal Descriptions

L1 IN

+Line IN

L1 OUT

+Line OUT

– Line IN and OUT

–R

–Remote LED

EARTH

Functional Earth/Screen (Isolated)

L1 IN

R–

L1 OUT

To next device

EARTH