Intelligent outdoor camera EX2000 series
are ideal for:
Traffic Control, Airports, jetty and harbors, Oil &
petroleum Field and Refineries, Military& police,
Border checkpoints, Sport stadiums, Town &City centers,
Nuclear Bases...
In fact, this camera contains three cameras
(color, monochrome and PIP) and is known for its High quality
1/2 inch CCD.
Physical size of CCD or amount of Pixelin the video Sensor (CCD)
Is the Most Important factor in quality of cameras
picture.This sensor has Big photodiodes and More Sensitive
to Light, also it has micro lens on the every pixel,
which can received more Among of Light .
at the end it can show more natural and
high Contrast with low noise picture.
Other hand it can present Wide angel View with caring
Quality of picture in comparison of Other video Sensor size.
This camera is being Dual CCD which in night vision, IR
cut filter will movefrom front of The CCD Then the outsider
things will be as an illumination source and monochrome CCD
will Take Picture easily. In day, IR cut filter will Move back
and take a color picture. Now please Imagine a mood that IR cut
filter moves continuously front of the CCD and then moves back,
Therefore, CCD must work hard and response to different two
conditions (please keep in your Mind that Color CCD will never
take Picture in best quality more than Monochrome CCD) and
CCD will be amortized and decrease quality of picture as soon as
dual CCD. Elbex has thought a Way for This problem, which that
is Dual CCD.
All the PTZ cameras have a part, which called SLIP RING and
contains ring and contacts.This Part has heavy duty that is
rotating and moving the cameras. Most of the rings and contacts
Are made by iron an steel which is not fit for them, because
they have more friction and Corrosion
But, Elbex has used expensive metal named Phosphor Bronze which
has less friction and Corrosion than them and it is toughness so,
this slip rings have longer life time with very Hard Alloy to offer
0.1 M Ω resistance.
LPF (Low Pass Filter):
Anti static technology in this filter, has been located on CCD,
can protect CCD from dust and Mist.
This filter does not let to high frequency signals
can pass with picture signal and noise
will decrease (noise can show itself
by changing in Pixel‘s frequency.),at the end, we will
Have sharp picture.
NDF (Neutral Density Filter):
This is a kind of Optic filter, this system same as
Sunglasses for camera, which is, reduce Amount of light
without Changing or decreasing In color balance or contrast.
By this filter, You will be able to bring CCD or Film what
you see with your eyes. Being difference in Color of white things
in picture is because of not to be this filter.
Color Temperature Sensor:
Light is not always what it seems. Our eyes are very forgiving,
so when we move from Place to place everything seems normal in
terms of Color. So, for example, when moving From a bright
daylight environment to a room lit by a candle all that will
appear to change, To the Naked eye is the light level.
In addition, the measurement of color temperature is in
Kelvin degrees. The relationship between color and Kelvin
temperature derived from Heating a "blackbody radiator".
Rangefinder:
Used to determine the focal length needed and what the picture
will look like on the monitor. The User looks through the device
and adjusts the range finder to the desired picture. Numbers on the
Outside of the range finder, indicate the focal length need.
It is equipped to Anti vandalism Sensor to protect it from any
aggression.
Dew Sensor:
When temperatures are low enough, dew takes the form of ice;
this form called frost.Because dew related to the temperature
of surfaces, in late summer it formed most easily on
Surfaces, which not warmed by conducted heat from deep
ground such as, grass car roofs, Moreover, glass… for this
reason, this camera has a sensor to eliminate it to visibility ogf camera.
Anti fogging coated glass:
With condensation repellent, film such as metal oxide
(silicon oxide…) on the glass, assures clear Visible.
Built in Ni-Cd Batteries
When the main power cut or switched off, the Ni-Cd batteries
also provide the surge current For the servo motors needed
for the high torque of the linear. Ensure more than two hours
Power backup.
Lightning and surge protection with built in gas arrestor
and solid body grounding:Voltage Surge of cameras is a big
problem in CCTV also lightning so, Elbex has Used Gas arrestor
such as (SF6 Sulfur hexafluoride), it is one of the most popular
insulating Gases, dielectric substance and as an inert gas
for shunting voltage surge.
Wednesday, April 21, 2010
Saturday, April 17, 2010
explosion proof cameras
EXPLOSION PROOF CAMERAS ELBEX
They are ideal for using in Coal Mines, Oil Refineries Oil Fields,
Chemical Factories …
ELBEX cameras are base on EEX Standard and they are capable
to use in Class II & I. In other words inHazardous areas
which an explosive atmosphere consisting of a Mixture with
air of flammable Substances In the form of gas, vapor or
mist is likely to occur in normal operation occasionally.
Moreover, they can Use in Coal Mines and underground
applications, which the Firedamp gas such as Methane is
exist.
Standards:
1. Protection method of these cameras, in hazardous area,
is base on EN50014 & EN50018 standards.
2. Type of Protection essentially is (de) Increased Safety
and Flameproof Enclosures.
3. Ingress Protection Rating is (IP66) which totally protected
against dust and against heavy seas.
Flame proof Enclosure:
Most popular kind of protection is Flameproof Enclosure.
This standard equipment is A very sturdy Case specifically
designed for use in explosive atmospheres. The potentially
incentive components are Contained within an enclosure into
which the flammable atmosphere can enter but which will
contain any Resultant explosion and prevent it's transmission
outside the enclosure.There are two main methods of Protection
for The enclosures to contain the explosion and energy limiting
methods that ensure that if a Spark generate There is not enough
energy in the spark to ignite the atmosphere. Main character
(The "d” type Enclosure) is preventing an internal inflammation
from igniting the ambient atmosphere and Keeps the Outside
temperature of the enclosure below the ignition temperature of
the ambient gas vapors On the other hand, dusts, if it will avoid an
external explosion, it can be approved
(Acceptable to the Authority having jurisdiction).
Classification of Explosive Gases:
The most dangerous explosion is in IIC group, IIC being the most volatile and
the most easily ignited.
Temperature Classification:
Temperature class or ignition temperature of the gas or vapor involved
according to the table below:
T-Class Hazards which will not ignite at temperatures below:
T1 450°C
T2 300°C
T3 200°C
T4 135°C
T5 100°C
T6 85°C
Afzarniroo Engineering Company
By: Ashkan Karimi
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