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Pub. 42004-615L2
GAI-Tronics Corporation P.O. Box 1060, Reading, PA 19607-1060 USA
610-777-1374 800-492-1212 Fax: 610-796-5954
V
ISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS
GAI-TRONICS® CORPORATION
A HUBBELL COMPANY
Model 670-801-EX and 670-801-UL
SmartSeries Amplifiers
for CENELEC Zone 1 and UL Div. 1
Confidentiality Notice
This manual is provided solely as an operational, installation, and maintenance guide and contains
sensitive business and technical information that is confidential and proprietary to GAI-Tronics.
GAI-Tronics retains all intellectual property and other rights in or to the information contained herein,
and such information may only be used in connection with the operation of your GAI-Tronics product or
system. This manual may not be disclosed in any form, in whole or in part, directly or indirectly, to any
third party.
Introduction
The assembly described in this manual is an explosion-proof enclosure and intelligent speaker amplifier
designed to be installed in hazardous areas where combustible gases exist or may exist. The extra thick
cast aluminum enclosure, while not gas tight, is designed to withstand repeated internal explosions
without expelling gases hot enough to ignite the external atmosphere. This is accomplished through the
use of a precision-machined enclosure opening flame path that cools the exiting gases to a temperature
below the flash point of the external, explosive atmosphere.
How to Use the Assembly/Model
Application
The hazardous area SmartSeries amplifier
is designed to provide clear communications even in high noise
areas where explosive atmospheres exist or may exist.
The Model 670-801-EX is BASEEFA approved to CENELEC Standards Ex dib for Zone 1, Group IIC
T5.
The Model 670-801-UL is approved by Underwriters Laboratories for:
• Class 1, Div. 1, Groups C and D
• Class II, Div. 1, Groups E, F, and G
• Class III, Div. 1
The intelligent SmartSeries
amplifier is designed for use on the GAI-Tronics single party or multi-party
system cable. It includes micro-controllers that are programmed to:
• Receive and send data messages on the system cable
• Measure ambient noise and adjust speaker level
• Monitor and control optional external equipment