Bosch DS484Q Spécifications télécharger pdf (Page 5)

DS484Q/DS486Q | Installation Instructions | 2.0 Installation

Bosch Security Systems, Inc. | 7/05 | 4998138530F 5

2.0 Installation

2.1 Installation Considerations

Read the following information before installing,

wiring, and performing regular maintenance on the

equipment.

Do not install the detector:

• near trees and plants where falling leaves can block

the beam

• where intense sources of light and sunlight can

reflect directly into the receiver optics

A beam of light shining at a ±3-degree

angle of each receiver can cause false

alarms.

• on movable surfaces

• where subject to splashing water or sea spray

• beyond the maximum range of each model

• where strong electrical noise or radio frequency

interference occurs

• where strong vibration occurs

• in the presence of corrosive or explosive gas

Face upper and lower optical modules toward each

other on the transmitter and the receiver.

• Do not install or wire detectors during a

thunderstorm.

• Do not supply power until all wiring is

completed.

• Maintain power between 10.5 VDC and

28 VDC at all times.

• Do not disassemble or modify the base.

2.1.1 Beam Strength over Distance

The beam strength is best if used within the maximum

range of the detectors. If used for shorter distances,

excess beam energy reaches the receiver resulting in

reflection off nearby walls and incorrect

communication with other detectors.

2.1.2 Beam Spread

The beam spread is +0.7°. Refer to Figure 5 and Table 2

to determine the installation conditions.

Table 2: Beam Spread Distances

Between

Transmitter and

Receiver

∗

Horizontal

Spread

∗

Total Vertical

Spread

∗

m ft m ft m ft

20 66 0.5 1.7 0.8 2.6

40 131 1.0 3.3 1.3 4.3

60 197 1.5 4.9 1.8 5.9

80 263 2.0 6.6 2.2 7.2

100 328 2.5 8.2 2.7 8.9

120 394 3.0 9.8 3.2 10.5

140 459 3.5 11.5 3.7 12.1

160 525 4.0 13 4.2 13.7

180 591 4.5 14.8 4.7 15.4

200 656 6.0 16.4 5.2 17.1

∗

Refer to Figure 5.

Figure 5: Beam Spread

1 - Beam spread

2 - Distance between transmitter and receiver

3 - Horizontal spread

4 - Total vertical spread

1 2 3 4 5 6 7 8 9 10 ... 19 20

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