Posts Tagged ‘ IP rating ’

CCTV Housings

Monday, February 21st, 2011

Digital video security cameras may need CCTV housings, especially if they will be placed outdoors or in a potentially violent or hazardous environment. Though some cameras are made with protective Closed Circuit Television or CCTV housings, other may require that you install your camera in one before mounting.

Security Camera King offers a wide selection of outdoor cameras and CCTV housings. Normally when a digital video camera is marketed as an “outdoor” camera, it comes from the manufacturer with its own protective housing for use outdoors. However, some outdoor cameras still require CCTV housings under certain conditions.

You may have noticed that certain CCTV housings or outdoor cameras are accompanied by an IP rating that usually looks something like this: IP56. This is actually a rating based on a standard created by the International Electrotechnical Commission or EIC. This rating was designed to provide consumers and manufacturers with a more precise yet standardized method of describing the protection that is offered to an electronic device, in this case of course, the digital video security camera.

The IP rating or sometimes called the IP code stands for International Protection Rating or Ingress Protection Rating. Some times the rating may include a letter after the two digits, but that is seldom seen in reference to CCTV housings or cameras and is really irrelevant for these applications. The two digits following the “IP” however, do have a meaning. Let’s take a closer look.

The first digit of the IP rating represents the degree of protection offered against solid material. This digit’s range is from 0 to 6, with 0 indicating no protection whatsoever and 6 meaning the CCTV housing is absolutely dust tight. For a sense of the rating, a 2 means protection against ingress of objects greater than 12.5 mm such as fingers or other objects.

The second digit of the IP rating represents the degree of protection offered against liquid material. The digit range in this category is from 0 to 8, again with 0 indicating no protection whatsoever from liquids. A rating of 8 however, indicates that the CCTV housing can with stand immersion in water beyond 1 meter in depth. Once again for a sense of the rating, a 4 means protection against splashing water against the housing from any direction shall have no harmful effect on the camera. A good IP rating for a CCTV housing is at least IP55.

Dome and Bullet type digital video security cameras are the most likely models to be manufactured with their own “built-in” or perhaps more accurately, “built-on” CCTV housings. Likewise, these cameras are also most likely to be marketed as “outdoor” or “indoor/outdoor” use cameras.

Security Camera King carries many different types of indoor/outdoor dome cameras including those whose CCTV housings are classified as “vandal proof.” Outdoor dome cameras are often installed in vulnerable locations; that is, since they are the most visible component of a digital video system they are usually installed in areas of high risk (if the system’s layout is designed correctly). These cameras come with a strong metal housing, no visible screws (that could otherwise be maliciously undone), and very strong Lexan domes.

Most of our bullet-shaped cameras come with their own CCTV housings and are marketed as indoor/outdoor types. Bullet cameras are typically used outdoors in areas of low-risk vandalism because the cameras can maliciously be repositioned rather easily.

Box cameras are very popular cameras; however they usually offer no weatherproofing CCTV housings or mounting hardware. If these cameras are purchased with the intent to use them outdoors, you’ll want to purchase you’ll want to purchase our Metal CCTV Security Camera Outdoor Housing with Mount (product # OUTDOOR_HOUSING).

However, if your box camera will be used outdoors in extremely cold climates, you’ll risk fog and condensation forming inside the housing and on the camera lens. In this particular case, you may want to consider purchasing Security Camera King’s Outdoor Camera Housing with Heater and Blower (product# OUTDOOR-HEATED-HOUSING) for just a few dollars more.

Finally, we should mention that we also offer a very large variety of explosion proof CCTV housings and mounting brackets. Explosion proof housings prevent any volatile and potentially flammable vapors from coming in contact with the camera’s electrical components which could cause the gas to ignite. These housings are also made of hardened stainless steel that is able to withstand severe weather conditions. These are excellent for use in any area where extreme security measures are required.


Heavy Duty CCTV Cameras

Thursday, December 9th, 2010

There are times when a situation calls for something more rugged than standard Closed Circuit Television (CCTV) cameras and that is when it’s time to consider heavy duty CCTV cameras. Heavy duty CCTV cameras are built tough to withstand use and abuse and still keep working.

A standard digital video color security camera has no moving parts unless it contains additional features such as Pan-Tilt-Zoom (PTZ). The PTZ function works by using servos or motors to move the position of the camera up and down or left and right to increase the camera’s field of view. Zooming involves moving the lenses in such a way as to enlarge the size of the target.

Most heavy duty CCTV cameras have these movements reinforced in some manner so that they do not become a factor in making the camera more susceptible to damage. Since the average camera has no moving parts per se, that contributes greatly to making the camera inherently rugged.

In order to understand this concept of no moving parts, the following is a brief description of how the typical digital video camera works. Light images enter the camera through the lens. If the lens is a fixed focal length lens (i.e. not a zoom lens) there is no need for it to move. As the light passes through the lens, the lens focuses the image on an electronic sensor that usually ranges in size from 1/4 to 1 inch square.

The sensor is an electronic component that can change light energy into electrical energy that can be measured. The electrical energy is compiled into a signal which passes through an analog to digital circuit that converts the signal into binary or digital format. The digital information is then sent to a Digital Video Recorder or DVR via a digital video transmission cable or, if the camera is wireless, as a radio signal to a corresponding receiver.

Note that none of these processes involve moving, mechanical type parts. The lack of moving parts is one less factor that could contribute to the “sensitivity” of a heavy duty CCTV camera. Not that a camera with moving mechanical parts can’t be used as a heavy duty CCTV camera, it’s just that this is one additional advantage of the construction of these cameras.

By comparison, think of a typical camcorder that records its video image to a tape, DVD, or a hard drive. Drop that camera one time on a hard surface with some respectable force and chances are you’ll be sending it in for repair or replacement, and chances are the moving mechanical parts are what break.

So what kind of heavy duty CCTV cameras are available? Generally, security and surveillance applications can be classified into two types, indoor and outdoor. Indoor cameras are made with no additional protection from water, wind, hail, etc, as they are designed to be used indoors, under the protective cover of a room.

Outdoor cameras are one type of heavy duty CCTV cameras that are designed specifically for the purpose of being used outside without the protective cover of a room, roof, or building. These cameras differ from indoor cameras in that they are contained within a protective enclosure. Normally, the enclosure is a heavy duty metal box or molded Plexiglas or Lexan.

Heavy duty CCTV cameras for outdoor use are often rated by the manufacturer as to their ability to protect the camera from foreign objects. One common standard that is used is called the International Electrotechnical Commission’s (IEC) Ingress Protection rating or code also called an IP code or rating. The IP code consists of two digits; the first digit represents the degree of protection from solid objects and the second digit represents the degree of protection from liquids.

The first digit of the IP rating (solids) ranges from 0 to 6, where 0 represents no protection and 6 represents absolutely no penetration from dust or other large objects. The second digit ranges from 0 to 8 where 0 represents no protection and 8 means the camera is protected from liquids to the extent that it can be submersed in water beyond 1 meter in depth. The highest IP rating is IP68.

There is also a wide variety of specific use heavy duty CCTV cameras. These cameras may be manufactured in such a way that they are marketed as vandal proof or even explosion proof. These cameras may use special mounts designed specifically for that purpose.


Outdoor Motion Activated Security Surveillance System

Thursday, November 4th, 2010

An outdoor motion activated security surveillance system is an excellent tool to provide security and surveillance for almost any residential or commercial application. Modern technological advancements have made this surveillance system incredibly versatile and reasonable priced as well.

An outdoor motion activated security surveillance system’s cameras are specifically designed for outdoor use. These cameras (as opposed to indoor cameras for example) are designed to be housed by a protective enclosure. The enclosure protects the camera from weather, dust, and other objects.

An outdoor security camera may be rated according to the protection that is afforded to it by the enclosure or its casing. This rating, an Electrotechnical International Commission (EIC) standard, is call an Ingress Protection rating, IP rating, or IP code.

The rating consists of the letters “IP” followed by two digits, for example IP65. The first digit of the rating describes the extent the camera is protected from solid objects and the second digit indicates the extent the camera is protected from liquids. The example IP65 rating means the camera is dust free and protected from water sprayed from nozzles in any direction.

The first digit of an IP rating for an outdoor motion activated security camera system ranges from 0 – 6 with 0 indicating that there is no protection against contact or ingress of objects. As the number increases from 0 to 6, the rating indicates that the camera is protected from objects continually smaller in size. A first digit IP rating of 6 indicates no dust and complete protection against contact.

The second digit of an IP rating for the camera ranges from 0 to 8 with 0 indicating that there is no protection from water. As this digit increases in value the rating indicates progressive protection from water with 1 meaning protection from dripping water and 8 meaning continuous immersion in water.

An outdoor motion activated security camera system also has a unique characteristic as indicated by its descriptive name. The cameras only record video when motion is detected.

This is accomplished by an on-board Passive InfraRed (PIR) sensor. The PIR sensor can detect the infrared radiation from objects in the camera’s field of view. If the sensor detects a significant change in the infrared radiation in this view, it assumes it is created by a moving object; hence it detects “motion.” The sensor is connected to a relay that turns the camera on in recording mode to capture the video images. The camera shuts off or stops recording when the sensor detects that the motion has stopped or after a pre-programmed period of time.

This feature, though small and simple in design and appearance, can offer tremendous benefits in the functioning of a security camera system. Since the camera will only record video when motion is detected, this can save a tremendous amount of file space use on the system’s Digital Video Recorder or DVR.

Since the DVR records video images in sequence, it will continue recording until the DVR’s storage capacity is full. Once the DVR is full however, the video image files are rewritten over the files that are the oldest, continuing this process until the DVR is full and then repeating the process over and over again. A motion detector activated camera can extend DVR recording times before repeating and rewriting, significantly.

In addition, a motion activated security camera system camera must have a power supply. This may be in the form of a small, low-voltage Direct Current (DC) power line run from a power distribution center to each camera or from a nearby plug-in transformer. Many cameras have the ability to operate on the power supplied by batteries, either one time use types or rechargeable types.

The PIR sensor on a motion activated security camera uses a very small amount of power to stay on. In fact, compared to the power required to capture video, the PIR sensor’s power usage is significantly lower. Motion activated cameras that operate on battery power last significantly longer between charges or battery changing because the motion sensor, in effect, conserves battery power.

There are many additional/optional features that contribute to the versatility of an outdoor motion activated security camera system. Some of these features include:
• Pan-Tilt-Zoom (PTZ) functions
• Day/Night vision
• Night vision infrared recording
• Wireless cameras
• IP ready cameras and/or DVRs

These features coupled with the motion activated feature make the outdoor motion activated security camera system appropriate for almost any commercial or residential application.