GasSens
Gas Detection System
Sec
tion 4 - Optional Equipment
O & M Manual
A14-RK, 8/06
4
-
4
STROBE LIGHT
The accessory alarm indicating strobe light (part number 35-0002) available for use with the
GasSens
alarm system is a weatherproof high-intensity strobe operating from a 12 VDC power source. The strobe
can be conveniently mounted on the top or either side of the alarm enclosure using one of the 1/2" NPT
hubs supplied with the unit. The bottom of the strobe also contains a 1/2" NPT mounting adapter, so that
only a 1/2" pipe nipple is needed to complete the assembly. The necessary nipple is available from most
hardware stores or plumbing supply outlets.
For remote applications, the strobe should be mounted to 1/2" conduit, with a junction box nearby for
splicing the strobe wires to the interconnect wiring running to the alarm unit. This wiring should be kept
separate from AC power wiring to avoid accidental connection of AC power to the strobe, which will
damage the lamp.
The 12 VDC power to operate the strobe can be picked up from the power supply module which is
part of the alarm unit. Figure 4-2 shows the typical wiring diagram for connection of the strobe. The
wiring diagram shows the plus side of the 12 VDC supply brought to the common of the alarm contact,
one side of the strobe wired to the normally open (NO) contact, and the other side of the strobe connected
to the minus side of the 12 VDC supply. Connection of the strobe lamp directly across the alarm relay will
not operate the strobe because alarm contacts are unpowered.
CAUTION: Strobe light connection is polarity sensitive. Check wiring to be sure that the +12 is
connected to the red strobe wire.
Analytical Technology, Inc.
Figure 4-2: External Strobe Light Connections (ATI-0240)
