
Installation | 2-7
Surveyor MKII Pressurized Network Dome
Note
By default, when the pressure in the housing dips below 1/2 psig an On
Screen Display message appears stating “Low Pressure Warning.”
Alternatively, this alarm warning may be sent to the CPU by enabling the
alarm in the camera dome’s menu. When this is activated, the On Screen
Display message will not appear. Additionally, the unit is preconfigured for
sensor titles to display for temperature, relative humidity and pressure. These
titles can be disabled in the Titling screen of the Web Browser. Refer to
Programming manual for titling and alarm information.
Housing
The housing is a combination cast aluminum frame and molded polyethylene
plastic UV-resistant weather-proof shell. It is used as the mounting frame for
the camera drive that mounts to the two (2) tabs on the inside of the housing.
The interior is environmentally controlled using a processor controlled
heater/fan assembly. A safety cord and clip are provided on the inside to
connect the camera drive latch during installation. The lower side of the
housing is equipped with a fill valve (Schraeder type); the top has a pressure
switch and a pressure relief valve. In addition, a 23-pin female, pressure-
rated connector is installed at the top for signal connection. An RJ-45
connector is provided for video/data transmission. There is also a rectangular
shaped flange surface with a four-hole bolt pattern, covered with gasket
material that is used to attach a pipe or wall mount. The inside of the housing
is factory-prepared for the installation of the camera drive mechanism. A
customer interface board, that can be unlatched or removed for easy access,
is installed in the top of the housing.
Camera Drive
The camera drive is comprised of an integral camera, pan-and-tilt drive and
CPU. It is designed for easy “snap-in” installation into the housing. The
camera drive quickly and accurately positions the camera in 360°of pan
angle and 92.5°of tilt angle. An additional thermostatically-controlled heater
is provided for temperature control.
Trim Ring/Lower Dome
The trim ring/lower dome is an assembly comprised of a 6.0-inch (152 mm)
diameter clear polycarbonate plastic shell and a cast aluminum/zinc color
coordinated trim ring. It contains a radial neoprene gland seal that
compresses and provides a pressure seal when the trim ring is attached to
the housing. The trim ring/lower dome assembly is attached using eight (8)
captive screws that require a torque wrench. It is also equipped with a safety
latch that is used to attach the housing’s safety cord. Refer to the
Maintenance Section of this manual for instructions on handling and care of
this lower dome.