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電話 GAI-Tronics 272-001のPDF 取扱説明書をオンラインで閲覧またはダウンロードできます。GAI-Tronics 272-001 16 ページ。 Intrinsically safe telephone

Pub. 42004-173D

Model 262-001 and 272-001 Intrinsically-Safe Telephones

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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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