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UL and C-UL Classifications for Hazardous Locations, North America

Explosion Proof Camera

 

Here is a great article from the UL website in regards to UL and C-UL Classifications for Hazardous Locations, that is helpful.

Read the full article on UL’s site here: UL and C-UL Classifications, Hazardous, NA  (UL.COM Hazardous-Locations)

Source:  www.ul.com

Author:  UL, LLC.

 

UL and C-UL Certification for North America

UL and C-UL Classifications for Hazardous Locations

Gain a better understanding of the definition of a Hazardous Location and area classification as well as the UL and C-UL Certification for North America.

What is a Hazardous Location?

Location where explosion or fire hazards exist due to the presence of flammable gases, flammable or combustible liquid-produced vapors, combustible dusts, or ignitable fibers or flyings.

How are Hazardous Areas Classified?

Area Classification – Hazardous Locations are classified by the likelihood of an ignitable concentration of combustible material being present. There are two systems in place, including the traditional North American Division system as well as the alternative Zone system. See below for further details:

DIVISION SYSTEM (NEC ARTICLE 500 THROUGH 503/CEC SECTION 18)

Sample Marking:

  • Divisions
    • Division 1 – Ignitable concentrations of flammable gases, flammable liquid-produced vapors, or combustible liquid-produces vapors can exist under normal operating conditions.
    • Division 2 – Ignitable concentrations of flammable gases, flammable liquid-produced vapors, or combustible liquid-produces vapors are not likely to exist under normal operating conditions.
  • Class – Materials are divided by type:
    • Class I – Flammable gases, flammable liquid produced vapors, and combustible liquid produced vapors
    • Class II – Combustible dusts
    • Class III – Ignitable fibers / flyings
  • Groups – Materials are further divided into Groups for Class I, Divisions 1 and 2:
    • A – Acetylene
    • B – Hydrogen
    • C – Ethylene
    • D – Propane
  • Groups – Materials are further divided into Groups for Class II, Division 1 and 2:
    • E – Metal Dusts (Div. 1 only)
    • F – Carbonaceous Dusts
    • G – Non-Conductive Dusts (flour, grain, wood, plastic, etc.)

What is the difference between a Class I, Division 1 Location and Class I, Division 2 Location? What about the differences between the other locations?

Class I, Division 1 Location

  • Ignitable concentrations of flammable gases, vapors or liquids:
    • can exist under normal operating conditions;
    • may exist frequently because of repair or maintenance operations or leakage; or
    • may exist because of equipment breakdown that simultaneously causes the equipment to become a source of release.

Class I, Division 2 Location

  • Volatile flammable liquids or flammable gases or vapors exist, but are normally confined within closed containers;
  • Ignitable concentrations of gases, vapors or liquids are normally prevented by positive mechanical ventilation; or
  • Adjacent to a Class I, Division 1 location where ignitable concentrations might be occasionally communicated.

Class II, Division 1 Location

  • Ignitable concentrations of combustible dust can exist in the air under normal operating conditions;
  • Ignitable concentrations of combustible dust may exist because of equipment breakdown that simultaneously causes the equipment to become a source of ignition; or
  • Electrically conductive combustible dusts may be present in hazardous quantities.

Class II, Division 2 Location

  • Combustible dust is not normally in the air in ignitable concentrations;
  • Dust accumulations are normally insufficient to interfere with normal operation of electrical equipment;
  • Dust may be in suspension in the air as the result of infrequent malfunction of equipment; or
  • Dust accumulation may be sufficient to interfere with safe dissipation of heat or may be ignitable by abnormal operation.

Class III, Division 1 Location

  • A location in which easily ignitable fibers or materials producing combustible flyings are handled, manufactured or used.

Class III, Division 2 Location

  • A location in which easily ignitable fibers are stored, or handled other than in the process of manufacture.

 

ZONE SYSTEM (NEC ARTICLE 505-506 / CEC SECTION 18)

Sample Marking:

  • Zones
    • Zone 0 – Ignitable concentrations of flammable gases, flammable liquid-produced vapors, or combustible liquid-produces vapors are present continuously or for long periods of time under normal operating conditions.
    • Zone 1 – Ignitable concentrations of flammable gases, flammable liquid-produced vapors, or combustible liquid-produces vapors are likely to exist under normal operating conditions.
    • Zone 2 – Ignitable concentrations of flammable gases, flammable liquid-produced vapors, or combustible liquid-produces vapors are not likely to exist under normal operating conditions.
    • Zone 20 – Ignitable concentrations of combustible dust or ignitable fibers/flyings are present continuously or for long periods of time under normal operating conditions.
    • Zone 21 – Ignitable concentrations of combustible dust or ignitable fibers/flyings are likely to exist occasionally under normal operating conditions.
    • Zone 22 – Ignitable concentrations of combustible dust or ignitable fibers/flyings are not likely to occur under normal operating conditions.
  • Groups – Class I, Zone 0, 1, and 2
    • IIC – Acetylene & Hydrogen
    • IIB + H2 – Hydrogen
    • IIB – Ethylene
    • IIA – Propane
  • Groups – Zone 20, 21, and 22
    • IIIC – Conductive Dust
    • IIIB – Non-Conductive Dust
    • IIIA – Combustible Flyings
  • Electrical Protection Types – Gas Atmospheres
    • “d” – flameproof (for EPL Gb or Mb)
    • “e” – increased safety (for EPL Gb or Mb)
    • “ia” – intrinsic safety (for EPL Ga or Ma)
    • “ib” – intrinsic safety (for EPL Gb or Mb)
    • “ic” – intrinsic safety (for EPL Gc)
    • “ma” – encapsulation (for EPL Ga or Ma)
    • “mb” – encapsulation (for EPL Gb or Mb)
    • “mc” – encapsulation (for EPL Gc)
    • “nA” – non-sparking (for EPL Gc)
    • “nC” – protected sparking (for EPL Gc)
    • “nR” – restricted breathing (for EPL Gc)
    • “o” – oil immersion (for EPL Gb)
    • “op is” – inherently safe optical radiation (for EPL Ga, Gb or Gc)
    • “op pr” – protected optical radiation (for EPL Gb or Gc)
    • “op sh” – optical system with interlock (for EPL Ga, Gb or Gc)
    • “pv” – pressurization (for EPL Gb or Gc)
    • “px” – pressurization (for EPL Gb or Mb)
    • “py” – pressurization (for EPL Gb)
    • “pz” – pressurization (for EPL Gc)
    • “q” – powder filling (for EPL Gb or Mb)
  • Electrical Protection Types – Dust Atmospheres
    • “ta” – protection by enclosure (for EPL Da)
    • “tb” – protection by enclosure (for EPL Db)
    • “tc” – protection by enclosure (for EPL Dc)
    • “ia” – intrinsic safety (for EPL Da)
    • “ib” – intrinsic safety (for EPL Db)
    • “ma” – encapsulation (for EPL Da)
    • “mb” – encapsulation (for EPL Db)
    • “mc” – encapsulation (for EPL Dc)
    • “p” – pressurization (for EPL Db or Dc)
  • Equipment Protection Level (EPL) – Level of protection assigned to equipment based on its likelihood of becoming a source of ignition and distinguishing the differences between explosive gas atmospheres, explosive dust atmospheres, and the explosive atmospheres in mines susceptible to fire damp.
    • EPL Ma – Equipment for installation in a mine susceptible to firedamp, having a very high level of protection, which has sufficient security that it is unlikely to become an ignition source in normal operation, during expected malfunctions or during rare malfunctions, even when left energized in the presence of an outbreak of gas.
    • EPL Mb – Equipment for installation in a mine susceptible to firedamp, having a high level of protection, which has sufficient security that it is unlikely to become a source of ignition in normal operation or during expected malfunctions in the time span between there being an outbreak of gas and the equipment being de-energized.
    • EPL Ga – Equipment for explosive gas atmospheres, having a very high level of protection, which is not a source of ignition in normal operation, during expected malfunctions or during rare malfunctions.
    • EPL Gb – Equipment for explosive gas atmospheres, having a high level of protection, which is not a source of ignition in normal operation or during expected malfunctions.
    • EPL Gc – Equipment for explosive gas atmospheres, having an enhanced level of protection, which is not a source of ignition in normal operation and which may have some additional protection to ensure that it remains inactive as an ignition source in the case of regular expected occurrences (for example failure of a lamp).
    • EPL Da – Equipment for explosive dust atmospheres, having a very high level of protection, which is not a source of ignition in normal operation, during expected malfunctions, or during rare malfunctions.
    • EPL Db – Equipment for explosive dust atmospheres, having a high level of protection, which is not a source of ignition in normal operation or during expected malfunctions.
    • EPL Dc – Equipment for explosive dust atmospheres, having an enhanced level of protection, which is not a source of ignition in normal operation and which may have some additional protection to ensure that it remains inactive as an ignition source in the case of regular expected occurrences (for example failure of a lamp).

*Article from UL Website / UL and C-UL Classifications for Hazardous Locations

 

For more information or to get a quotation, please contact us:

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Ph. 877-880-7728

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NXM36D000

 

 

Planning a CCTV installation in a hazardous environment requires careful planning and attention to the different Division and Zone classifications. Classifications are derived from a number of factors and systems as described above. If you are needing assistance with your application, we can help. Ellipse Security is a Authorized Distributor for VideoTec Products as well as Hanwha Techwin Products. Both VideoTec and Hanwha offer a variety of options for Explosion Proof Cameras, Explosion Proof Housings, Stainless Steel Cameras, PTZ’s, Housings and More!

Explosion Proof Cameras and Housings

Stainless Steel Security Cameras

 

 

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STOiC XVR Quick Start Guide and STOiC Manual

Thank you for choosing STOiC Technologies Products. The STOiC Technologies XVR and DVR Quick Start Guide and Stoic manual are attached below for your convenience. Additional information and technical support is available from Ellipse Security, Inc. If you need assistance, please call 877-880-7728.

Applicable Models:

2MP Models

  • SAS-XVR400
  • SAS-XVR800
  • SAS-XVR1600
  • SAS-XVR3200

5MP Models

  • SAS-XVR5400
  • SAS-XVR5800
  • SAS-XVR51600
  • SAS-XVR53200

Quick Start Guide: STOiC XVR Quick Start Guide

Manual: STOiC XVR User Manual

 

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CCTV Data Recovery

CCTV Data Loss and Recovery

Anyone who has been around disk-based storage devices for a while has had an incident where they’ve either lost data, the HDD has been corrupted, or maybe the media has been damaged in some way. The immediate response is usually panic. “That data is lost forever, and I had important footage on there!”. Or, “My building has burnt down, and my DVR is toast. I’ll never be able to tell what happened!!”. To quote the Hitchhiker’s Guide to the Galaxy:don't panic

There’s something to remember about data being erased from a hard drive, and that is that data isn’t really gone when you delete it. Not immediately, at least. Essentially (in very basic terms), the drive is told that the sectors that contained the data are okay to overwrite. So, if you’ve deleted data from your drive, or accidentally formatted it, the best thing to do is keep calm and don’t use that drive. Less time spent in use equals a better chance of recovery. That being said, if data is overwritten, it’s pretty much gone for good. Powering down the unit and calling a recovery specialist is the best first course of action. Also, keep in mind to try to act as quickly as possible, as CCTV hard drives are usually on a constant overwrite mode.

As it turns out, we specialize in CCTV data recovery, and we’re able to recover data from DVRs in most cases. We’ve been successful in recovering data from several DVR hard drives that were in fires, some with damage to the board, formatted drives, and corrupted files. If you ever find yourself in this situation, power down the DVR and give us a call. We’ll give you a quick and honest assessment. Our pricing is fair, and our turn-around times are usually within just a few days, unless there’s physical damage that needs to be repaired. We can help with damaged DVR’s, NVR’s, Hard Drives, SD Cards, IP Network Cameras and More! If you require CCTV data recovery, give us a call.

We love talking to people about data recovery.

877-880-7728

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Seeing Color in Extremely Low Light Levels with STARVIS!

Starvis Compare

Starvis CCTV Security Cameras

I’ve been in this industry for a while now, and there have been a handful of innovations that have really grabbed my attention. STARVIS, certainly is one of them. For quite some time, a major drawback to to having CCTV cameras in a low-lit area like a restaurant or bar, is that since the light levels are below the IR threshold, cameras stay in IR mode (Black and White) all the time. In IR mode (night vision), you sometimes lose detail that may be important later on, especially color. In a situation where we need detailed images from our CCTV Cameras, like what color shirt someone is wearing, having a Security Camera that can see in color in low light can be very beneficial. In addition, there are unforseen times when something may cause the IR to bounce wrong and ruin a picture. I know it sounds far fetched, but we don’t have CCTV systems because we’re complacent.

Like I had mentioned earlier, Starvis is one of the few new things in CCTV (well… relatively new) that has really grabbed my attention. It allows for very low-light footage to be captured in color. The Starvis Back-Illuminated sensor, made by SONY, is incredibly sensitive, and since its introduction, they’ve improved upon the technology. You may very well be asking yourself what practical application would this have for you. Check out this comparison below and pick which image you would rather use as evidence or as a way of determining what color shirt a person was wearing.

Starvis

With Starvis technology, not only are images captured, but the footage would also have extra information for the police to possibly make an arrest. Can’t see the color of a car when your cameras are in IR mode? What about a home intruder? The ability to be able to show the police exactly what they looked like is something that could be incredibly beneficial. Business owner? Maybe a restaurant or bar? Being able to keep all footage in color would help identify troublemakers should they start making a scene, or worse. Detail is better preserved in color. Beyond capturing detailed evidence, viewing your live CCTV images and recorded footage can be much more productive when in color. Imagine trying to explain to an employee in training: “Hey, when you served that woman with the, well I’m not sure what color hair she had but on my footage it looks…grayish?”

So Starvis Low Light CCTV Security Cameras are quickly becoming popular with Bar’s, Restaurants, Poker Rooms, Internet Cafe’s and a multitude of other business’s that operate in low light conditions. One Internet Cafe owner exclaimed “Wow, it’s great to be able to finally see everything in color, all the time! It always bothered me that when we were closed during the day, everything was in color but as soon as we opened, and the lights went down, my cameras were in black and white.”

Starvis

So you’re with me up to this point, right? I’m sure you’ve asked yourself, “Which cameras are offered by Ellipse Security that have Starvis Capabilities?”. I’m glad you asked. Our STOiC Technology Line of Cameras feature many Starvis Models for your needs. Here is a quick list:

The STH-B3271 with not only StarVis, but an incredible 270 feet of IR range

https://ellipsesecurity.com/product/sth-b3271b/

The STH-D5561W Dome

https://ellipsesecurity.com/product/sth-d5561w/

The variable focus STH-D2100W Indoor Dome (2.8-12mm zoom)

https://ellipsesecurity.com/product/sth-d2100w/

The STH-B3181 with an IR range of 180′ and a 2.8-12mm Variable Foucus lens (also available in charcoal color)

https://ellipsesecurity.com/product/sth-b3181w/

And the author’s personal favorite, the STH-B2061W. Quite possibly our most well rounded camera, as well as one of our most popular. SmartIR, Starvis, a compact size, and also has built in audio. This camera could have an article all on its own.

https://ellipsesecurity.com/product/sth-b2061w/

And adding new models every day!

So, now that you’ve seen what Starvis can do for you, and have some ideas as far as practical applications for the home and business, give it a shot for your CCTV camera system. You’ll be able to see the difference for yourself. Still have questions? No problem! Give us a call!

We love talking to people about security cameras, and StarVis!

Toll-Free 877-880-7728