Page 6 - ingenioren

BASICS OF SOUNDS

Buzzers Hooters
Either Electro Mechanical type where the Hooters are powerful motor driven horns
diaphragm is deflected by a moving magnet producing the unique sound used the world over.
which is triggered by a make and break A serated rotor driven against a hardened steel
contactor or the Piezo type where the diaphragm diaphragm stud creates a high dB output with
is controlled by an electronic circuit. The low frequency sound.
mechanical versions offer medium/high dB
output with low frequency sound and are of These types of signals are are ideal for indoor and
robust construction. outdoor applications where a rugged and durable
sounder is required.
Piezo versions are relative low dB and high
frequency and are only suitable for local signaling Motor Sirens
applications. Motor sirens are designed for applications where
a high output sound is required. Manufactured
Electronic Sounders for heavy duty enviroments with the traditional
The Electronics Sounder is a versatile acoustic spin up/spin down effect they are ideal for use
signal incorporating a number of individual tones. over medium to large size areas which demand
It incorporates a medium dB output with a high dB units with low frequency sound.
distinctive multi-tone frequency option to
indicate various processes. Bells
Bells are a cost effective traditional signalling
The type of signal is suitable for fire, operating, device with a wide range of signaling
general alarm and other applications that need a applications. They offer a medium dB output
reliable signaling device. with a unique sound. Bells are normally used in
applications which include fire alarm.
Airhorns
Airhorns are non-electrical devices that only
operate from a compressed air supply. They offer
very high dB output with very low frequency
sound making them ideal for very noisy
enviroments.

Being non-electrical they can be used in
hazardous area category 1 use.

M Db(A)
1 65 70 75 80 85 90 92 94 96 98 100 102 104 106 108 110 112 114 116 118 120 122 124 126 128 130
2 59 64 69 74 79 84 86 88 88 90 92 94 96 100 102 104 106 108 110 112 114 116 118 120 122 124
3 55 60 65 70 75 80 82 84 86 88 90 92 94 96 98 100 102 104 106 108 110 112 114 116 118 120
5 51 56 61 66 71 76 78 80 82 84 86 88 90 92 94 96 98 100 102 104 106 108 110 112 114 116
10 45 50 55 60 65 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 100 102 104 106 108 110
20 39 44 49 54 59 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 100 102 104
30 35 40 45 50 55 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 100
50 = 36 41 46 51 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96
100 = = 40 45 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90
200 = 39 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84
300 = 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80
500 = 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76
1000 = = = 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70
2000 = = = 38 40 42 44 46 48 50 52 54 56 58 60 62 64
3000 = = 38 40 42 44 46 48 50 52 54 56 58 60