Posts Tagged ‘ international electrotechnical commissions’



Weatherproof Bullet Security Camera

Written By:
Monday, May 2nd, 2011

There are very few bullet cameras these days that can’t be called weatherproof bullet security cameras.  In fact, all of the bullet cameras that we offer for sale at Security Camera King are weatherproof.  That is one of the benefits of owning a bullet security camera.

A weatherproof bullet security camera bridges the gap between the typical box camera and the conventional dome camera.  Box cameras are great cameras and have been around for a long time.  However, to maintain the box camera’s versatility it doesn’t come with all the necessary parts.

That is, for example, a box camera is usually sold as the body of the camera with the lens sold separately.  This is done to increase versatility, as you can always change lenses if you change the location or want a different field of view for the weatherproof bullet security camera.  However, this added versatility doesn’t come without added cost.

In addition, most box cameras were designed to be used indoors, under protective cover from the weather and the elements.  If you want to use a box camera outdoors, you will need to purchase an additional accessory, an outdoor camera housing.  While neither the lens nor the housing are terribly expensive, they are nonetheless, an expense that you need to consider when comparing cameras.

The dome camera is also an excellent camera.  Originally designed primarily for indoor use, the dome camera has come a long way in a relatively short period of time, technologically speaking.  Like the other models, dome cameras have their own advantages and disadvantages as well.  One such disadvantage is that due to their small size, dome cameras cannot support as many InfraRed Light Emitting Diodes (IR LEDs).  This ultimately means their range in conditions with little or no light will not be very long.

The weatherproof bullet security camera bridges the gap between the box and dome cameras because it features some of the items that are considered the very disadvantage of the other types of cameras.  For example, most bullet cameras come with a factory inserted lens.  Usually these are of the fixed type but there are many weatherproof bullet security cameras that come with varifocal lenses and motorized irises as well (See Security Camera King’s Product# OB-LX550IR150L922).

When shopping for a weatherproof bullet security camera, you probably will at some point, begin comparing each camera’s specification sheet. One term that we would like to clarify is the IP code or IP rating.  You’ll see this rating in the specifications as something like “IP65.”

IP stands for ingress protection and is a standard written and maintained by the International Electrotechnical Commission or IEC.  Its purpose is to provide specific descriptions of a camera enclosure’s ability to protect the camera inside.  An Ingress Protection rating has two digits (like the example in the previous paragraph).  The first digit represents the degree of protection from solids while the second digit indicates the degree of protection from liquids.

The first digit of the IP rating can range from 0 to 6.  A rating of 0 means there is absolutely no protection against contact and ingress or objects.  As this digit increases in value up to 6, each rating indicates protection from progressively smaller objects.  A rating of 6 for the first digit means there is absolutely no ingress of dust and there is complete protection against contact.

The second digit of the IP rating can range from 0 to 8.  Again, a rating of 0 means there is absolutely no protection against liquids.  As this digit increases in value up to 8, each rating indicates protection from progressively more intense contact with water.  A rating of 8 for the second digit means the camera is protected from continuous immersion in water deeper than 1 meter.  There for a reasonably good IP rating for a security camera would be IP55 or IP65.

Last but not least is the IR range.  Not all, but a good majority of the weatherproof bullet security cameras are also capable of IR video imagery.  This is accomplished by using IR LEDs to “light up” the field of vision.  This IR “light” is invisible to the human eye.

Generally, the more LED’s the greater the range and area of coverage under IR conditions.  Weatherproof bullet security cameras have lots of room for IR LEDs and can obtain fairly long ranges.  Before you buy the camera, make sure you check the range you will require so as to by the appropriate camera.

facebooktwittergoogle_plusredditpinterestlinkedintumblrmail

OD-LX520IR50 Vandal Resistant Dome Camera

Written By:
Friday, March 25th, 2011

Security Camera King’s (SCK’s) OD-LX520IR50 Vandal Resistant Dome Camera is the featured camera for all of SCKs Ultimate series DVR complete package systems.  Although this camera sells individually for only $74.95, it’s a very high quality high definition camera that produces detailed video and comes packed with many useful features.

The OD-LX520IR50 Vandal Resistant Dome Camera may be used indoors or outdoors and is rated at IP66.  The IP rating is the International Electrotechnical Commissions (EIC) standard for Ingress Protection; in other words it is a rating that grades the amount of protection that is afforded to the camera from weather and other elements.

A rating of IP66 means that the camera is dust tight and is completely protected against contact with dust.  In addition, the camera can withstand powerful water jets projected from a 12.5 mm nozzle against the enclosure without any harmful effects to the camera.

The OD-LX520IR50 is a vandal proof camera which means it has been designed in such a manner as to prevent as much mischievous damage to it as possible.  There are no exposed screws, the case is rugged and durable, and even the video transmission and power supply cabled can be run from behind the camera to prevent exterior exposure.

The camera is also a night vision InfraRed camera.  This camera can create crisp, clear detailed video images in total darkness and has a total darkness IR range of approximately 50 feet.  This is supported by the 23 separate IR Light Emitting Diodes (LEDs) that surround the camera lens and flood the camera’s field of vision with IR illumination.  Although this IR illumination produces a bright, nice contrast video image, it cannot be seen by the human eye.

The OD-LX520IR50 also has back light compensation to automatically adjust for subjects that could otherwise be distorted to back lighting.  It also comes with auto white balance for proper contrast and brightness control.  The included lens is a small 3.6 mm/F2.0 lens.

For the technically inclined, we’ll provide the following additional information.

The OD-LX520IR50 utilizes a SONY 1/3″ CCD with a horizontal resolution of 520 TVL (television lines).  It’s signal to noise ratio is more than 48 decibels and its clock frequency is NTSC 28.636 MHz and a 2 to 1 interlaced scanning system.

The minimum operating illumination is 0 Lux because the camera is an IR camera that can operate in total darkness.  The 23 IR LEDs that surround the lens can provide a working range up to 50 feet, but greater lengths can be obtained using additional IR illuminators.  The IR mode begins working when the ambient light dims to less than 10 Lux which is detected and then IR is initiated by a CdS (Cadmium Sulfide) cell (i.e. photocell).

The camera has an internal, negative synchronous system with a Gamma rating of 0.45 and an auto electronic shutter speed range of from 1/60 to 1/100,000 of a second.  It has a video output of 1 volt peak-to-peak at 75 ohms with auto gain control.  The camera operates on 12 Volts DC with a draw of 300 mA (this includes the IR LEDs).

The camera is small, compact and light weight.  The camera dimensions are 3.7 x 2.7 inches at weighs just under one pound (15.9 ounces)

The OD-LX520IR50 is durable an can operate within a fairly large temperature range.  The camera has been field tested for storage only at temperatures ranging from -22 degrees F through +140 degrees F and has a significant operating range of from 14 degrees F through 113 degrees F.

For more information and customer reviews check out the OD-LX520IR50 Webpage at http://www.securitycameraking.com/520tvl-indoor-outdoor-vandal-resistant-57813-prd1.html or contact on of our security experts via on-line “Live Chat” or by telephone at 866-573-8878 Monday through Friday from 9AM to 6 PM EST.

facebooktwittergoogle_plusredditpinterestlinkedintumblrmail