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Wednesday, April 21, 2010

traffic control camera

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.

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