GAI-Tronics 272-001 Kullanım Kılavuzu - Sayfa 6
Telefon GAI-Tronics 272-001 için çevrimiçi göz atın veya pdf Kullanım Kılavuzu indirin. GAI-Tronics 272-001 16 sayfaları. Intrinsically safe telephone
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Pub. 42004-173D
Model 262-001 and 272-001 Intrinsically-Safe Telephones
Page: 6 of 14
External Ringers
The Model 262-001 and 272-001 Intrinsically-Safe Telephones are designed with loud broadcast ringers.
In some instances, however, it is advantageous to install external ringers on these units. Examples of such
situations include areas where the noise level exceeds 95 dB, and locations where a large area must be
covered by a single telephone.
To install an external ringer with the Model 262-001 and 272-001 Telephones, it is necessary to attach an
explosion-proof relay to the telephone line. The relay must not interfere with the direct connection
between the Model 263 IBU and the intrinsically-safe telephone. The relay must also be wired to an
explosion-proof ringer purchased separately by the customer. The customer must install sealed conduit
from the relay to the ringer. Refer to Figure 2. Contact your local electrical distributor for information on
relays and explosion-proof ringers.
Figure 2. Placement of Explosion-proof Ringer in the Hazardous Area
Figure 3. An Alternative Explosion-proof Ringer Placement using a
Model 269 I.S. Explosion-Proof Ringer Relay
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