Line of Sight Infrared Hydrocarbon Gas Detector AutroPath HC800 , 116-P-HC800/IGB, Rev. A, 2016-03-03
P/N 95-8744, v4.2 , rev. 3/16
Autronica Fire and Security AS
Page 16
Snow and Ice in Ambients Below –20°C
The heated optics on both modules will melt snow or
ice on the windows in ambient temperatures down to
approximately –20°C. Below this temperature, snow
or ice blown onto the window will not be melted until
the ambient temperature rises. If long term outdoor
operation in very cold climates is intended, extra
shielding / covers are recommended to prevent
accumulation of snow and ice on the windows.
Deluge and Flooding
The modules are rated IP66/IP67 and will not be damaged
by occasional deluge or flooding. However, during such
an event, the unit will completely lose it’s IR signal and will
enter the “Beam-Block / Fault” state. In addition, when
the deluge / flooding subsides, there is the possibility
that contaminants will be left on the windows. Install the
modules away from areas prone to deluge or flooding.
Areas Prone to Subsidence and Settling
Avoid installation of the modules in areas where
problems with subsidence, settling or thawing of
permafrost can occur or cause significant movement.
If such locations cannot be avoided, the foundations
of the mounting structure should be engineered to
minimize any angular movements between the receiver
and transmitter.”
Areas Prone to Earthquakes
In the event of an earthquake, there is a chance that the
modules will become misaligned with respect to each
other. As long as the modules do not suffer from direct
mechanical impact damage during an earthquake,
they should remain undamaged by such events. After
an earthquake, it is recommended that the system
alignment be checked. Anti-vibration mounts are
unlikely to be of any benefit and are not recommended.
Misalignment by Accidental Impact
Locations where there is a significant likelihood of
equipment, personnel or moving objects accidentally
knocking the modules out of alignment should be
avoided where possible. If such locations cannot be
avoided, measures including improved mechanical
protection and warning notices should be considered.
moDuLe mouNtING ReCommeNDAtIoNS
AutroPath HC800 modules
must
be affixed to a solid,
non-vibrating structure capable of supporting a minimum of
100 lbs (46 kg), located within the system’s rated separation
distance.
A building wall, a heavy steel
i
-beam, or nearly any
type of masonry typically provides the most rigid
mounting surface available. However, avoid the use of
wood structures or supports if the possibility of warping
exists.
When using a vertical post, the post
must
be absolutely
stable and without vibration. Square stock pole is
recommended. Mounting height should not exceed 3
meters.
The post can be set into the ground or attached to
a secure surface. If a post is set into the ground, the
portion below grade should be set in concrete at least
1 meter deep.
Important
In all cases, consider whether additional bracing or
support is needed to ensure the structural integrity
of the module installation. See Figure 8. Remember
that accurate module alignment is essential for
proper performance of a line of sight gas detection
system. Movement may have a detrimental effect
on alignment. This is especially true for installations
with significant module separation distances.
Module mounting options include:
• A vertical or horizontal post with a nominal outside
diameter of 4.5” (11.43 cm). Acceptable outside
diameter range is 4” to 4 5/8” (10.16 to 11.75 cm).
See Figure 8.
• For flat surface mounting, refer to Figure 10.
NoTe
Anti-seize material (provided) must be applied
to the U-bolt threads at the time of installation to
prevent galling.
NoTe
To ease installation and future removal, all
threaded covers, stopping plugs, and thread
adapters must be installed using thread lubricant.
See “ordering Information” for part number —
avoid the use of silicone grease. For devices with
NPT threads, Teflon tape or thread seal lubricant
must be used for enhanced sealing capability. A
minimum torque of 20 foot-pounds is required to
maintain ingress protection. To maintain the IP or
NeMA ratings when using NPT stopping plugs,
one to three wraps of Teflon tape is required.
