Klaxon GP12, GP6, GP10 User Manual

1. Installation

a. Fix siren to a firm level base at a minimum height of 3m above the ground and free

of side or top obstructions.

b. For best all round sound propagation mount the unit at a height of 4.5 to 6m with

50m clear radius all round.

c. Figure 1 overleaf shows a polar plot of the sound output from the sirens in free

space.

Please note that the propagation of sound in air is affected by the following factors
which must be accounted for when calculating the coverage of the siren:

d. The plot assumes ideal free-field conditions.

The following losses must be taken into account during commissioning:

• Sound attenuation loss over distance in free-field conditions without obstructions.

Distance in Metres 1 30 100 200 500 1000 2000

GP6, GP10 and GP12 Sirens

INSTALLATION AND MAINTENANCE

• Variations of the propagation speed in the air

• Attenuation of the sound during propagation

• Wind and turbulence of the atmosphere

• Obstacles placed in the vicinity of siren and listener.

• Ambient noise levels

GP6 135 105 95 89 81 75 69

Audibility

dB(A)

• Attenuation in decibels per kilometre due to absorption of sound in air (10°C,

90%RH).

At 500 Hz frequency the attenuation is 1.6 dB(A)/kilometre

• Absorption due to fog in decibels per kilometre.

At 500 Hz frequency the attenuation is 1.0 dB(A)/kilometre

The two figures provided for sound absorption in clear air and fog are sound losses
in addition to the typical sound losses experienced over distance indicated in the
table above.

GP10 140 110 100 94 86 80 74

GP12 145 115 105 99 91 85 79

e. This equipment should only be connected to the supply voltage marked on the

rating plate.

f. WARNING: The equipment should be protected from access by persons, animals

or foreign bodies to avoid injury to persons or damage to equipment affecting safe

use.

g. WARNING: This equipment contains rotating parts. Please ensure that the

retaining straps on the rotor are left in place until the installation is complete and the

equipment is ready to be tested for the first time.

h. WARNING: Keep well clear of the siren when in operation. Extremely high noise

levels are produced. Unprotected exposure could lead to permanent hearing

damage. Ensure appropriate hearing protection is used when working in close

proximity to siren.

2. Maintenance

a. The siren should be periodically tested for correct function. Typically this could be

quarterly or half yearly.

b. Motor bearings are sealed and rated for a life of 25,000 hours. No maintenance is

required

3. Contacting Klaxon

Klaxon Signals Ltd,
Wrigley St,
Oldham,
England , OL4 1HW

Technical Helpline: [phone]
Sales Hotline: [phone]
Fax: [phone]
E-mail: [e-mail]
Web: www.klaxonsignals.com

18-185845/4