Hazardous zone locations, Class/Division vs Zone system

Hazardous zone

Hazardous zone locations are classified according to the nature of flammable materials present in the atmosphere. In some locations such compounds can be present for a short duration while in other places they are found continuously. The two main systems used to classify hazardous location are class/division system used in the USA & Canada and Zone system used by other countries.

Although, both of these systems are reliable and were developed to give protection, they use a different approach in classifying hazardous zone locations. This does not necessarily mean that one system is better than another; each one has its own metrics and depends on user location. Presently zone system is widely used throughout the world, depending upon the nature of environment the usage and preferences can vary.

Continue reading “Hazardous zone locations, Class/Division vs Zone system”

Class 1 Division 2 Panel PCs, safe system for hazardous locations

Class 1 Division 2 Panel PCs

For several manufacturing industries safety is a prime concern. Electrical equipment’s used in atmosphere with flammable gases or vapors, flammable liquids, combustible dusts, ignitable fibers or filings can result in a fire or explosion. Area with presence of hazardous materials in sufficient qualities to create a fire or explosion is classified as hazardous area. In US and Canada these areas are classified in Class/division system. In Europe and other countries the zone system is used. Both of these hazardous area classification systems outline protection techniques and methods for electrical equipment’s.

Continue reading “Class 1 Division 2 Panel PCs, safe system for hazardous locations”

What are hazardous area certifications?

hazardous area

Industrial process performed under presence of dangerous and explosive gases, combustible dusts, flammable liquid or any other similar sources should use electrical equipment’s with proper protection technique. To ensure that installed equipment’s are designed and tested to provide necessary protection, third party bodies or agencies certify that the specific equipment’s meet all requirements to perform in a hazardous area/location.

Continue reading “What are hazardous area certifications?”

Arista’s Industrial Panel PCs- For a better healthcare visualization

ThinManager Ready

In today’s dynamic market place, Industrial automation solutions are evolving rapidly. Buyers from myriad industries are continuously demanding innovative and productive solutions with minimal ownership costs. Arista Corporation delivers complete automation solutions including Industrial Panel PCs and displays. The complete range is designed for a smart, safe and sustainable manufacturing.

For industries like biotechnology, pharmaceuticals, life sciences, research, and medical; automation solutions should meet the regulations and environmental controls. With years of experience in manufacturing and delivering innovative applications, Arista touch displays/ monitors and video extender range is designed to be used in regulated areas like pharmaceuticals.

Make the right choice: Arista’s safe and reliable automation solutions are available as standalone or panel-mount units, the overall systems are easy to install use and maintain. Arista’s industrial workstations are customized specifically to meet industry regulations. Touch screens with multi-touch functionality can be installed easily along with an ergonomically adjusting option for the ease of operation.

Continue reading “Arista’s Industrial Panel PCs- For a better healthcare visualization”

NEMA Enclosures for Rugged Computer Systems White Paper

NEMA Enclosures for Rugged Computer Systems White Paper

In Non-Hazardous Locations, the specific enclosure Types, their applications, and the environmental conditions they are designed to protect against, when completely and properly installed, are as follows:

Type 1 – Enclosures constructed for indoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment and to provide a degree of protection against falling dirt.

Type 2 – Enclosures constructed for indoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment, to provide a degree of protection against falling dirt, and to provide a degree of protection against dripping and light splashing of liquids.

Type 3 – Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt, rain, sleet, snow, and windblown dust; and that will be undamaged by the external formation of ice on the enclosure.

Type 3R – Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt, rain, sleet, and snow; and that will be undamaged by the external formation of ice on the enclosure. 

Type 3S – Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt, rain, sleet, snow, and windblown dust; and in which the external mechanism(s) remain operable when ice laden.

Type 4 – Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt, rain, sleet, snow, windblown dust, splashing water, and hose-directed water; and that will be undamaged by the external formation of ice on the enclosure.

Type 4X – Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt, rain, sleet, snow, windblown dust, splashing water, hose-directed water, and corrosion; and that will be undamaged by the external formation of ice on the enclosure.

Type 5 – Enclosures constructed for indoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt; against settling airborne dust, lint, fibres, and flyings; and to provide a degree of protection against dripping and light splashing of liquids. 

Type 6 – Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt; against hose-directed water and the entry of water during occasional temporary submersion at a limited depth; and that will be undamaged by the external formation of ice on the enclosure.

Type 6P – Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt; against hose-directed water and the entry of water during prolonged submersion at a limited depth; and that will be undamaged by the external formation of ice on the enclosure.

Type 12 – Enclosures constructed (without knockouts) for indoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt; against circulating dust, lint, fibres, and flyings; and against dripping and light splashing of liquids. 

Type 12K – Enclosures constructed (with knockouts) for indoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt; against circulating dust, lint, fibres, and flyings; and against dripping and light splashing of liquids. 

Type 13 – Enclosures constructed for indoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt; against circulating dust, lint, fibres, and flyings; and against the spraying, splashing, and seepage of water, oil, and non-corrosive coolants.

 

Comparison Between NEMA Enclosure Type and IEC

Enclosure Classification Designations

IEC Publication 60529 Classification of Degrees of Protection Provided by Enclosures provides a system for specifying the enclosures of electrical equipment on the basis of the degree of protection provided by the enclosure.  IEC 60529 does not specify degrees of protection against mechanical damage of equipment, risk of explosions, or conditions such as moisture (produced for example by condensation), corrosive vapours, fungus, or vermin. 

The NEMA Standard for Enclosures for Electrical Equipment does test for environmental conditions such as corrosion, rust, icing, oil, and coolants. For this reason, and because the test and evaluations for other characteristics are not identical, the IEC Enclosure Classification Designations cannot be exactly equated with the enclosure Type numbers in this Standard.

The IEC designation consists of the letters IP followed by two numerals.  The first characteristic numeral indicates the degree of protection provided by the enclosure with respect to persons and solid foreign objects entering the enclosure.  The second characteristic numeral indicates the degree of protection provided by the enclosure with respect to the harmful ingress of water.

Table A-1 provides an equivalent conversion from the enclosure Type numbers in this Standard to the IEC Enclosure Classification Designations.  The enclosure type numbers meet or exceed the test requirements for the associated IEC Classification; for this reason Table A-1 cannot be used to convert from IEC Classifications to enclosure Type numbers.

Conversion of Enclosure Type numbers to IEC Classification Designations cannot be used to convert IEC Classification Designations to NEMA Type numbers

Table A-1

Enclosure

Type Number

IEC Enclosure

Classification Designation

1

IP10

2

IP11

3

IP54

3R

IP14

3S

IP54

4 and 4X

IP56

5

IP52

6 AND 6P

IP67

12 AND 12K

IP52

13

IP54

 

About Arista

Founded in 1994 and headquartered in Fremont, CA, with operations in China, India and Taiwan. Arista Corporation is committed to the highest standards of product development, engineering, manufacturing and customer support. Our extensive product portfolio includes Industrial Panel PCs, Industrial Monitors, Box PCs & Fanless Embedded Computers, Rack Mount Computers, ACP ThinManager Ready Thin Clients, Embedded CPU Boards and Video Extender/Switches.

Market Focus

We provide off-the-shelf, full turnkey integration services, and custom ODM/OEM design and development services for the Industrial Automation, Food & Beverage, Pharmaceutical, Oil & Gas, Waste Water Management, and Control Room marketplaces. Our ODM/OEM capabilities help our customers meet exacting specifications and requirements at an affordable price and quick time to market in harsh operating environments.

Manufacturing & Support Capabilities

All of our products are assembled and tested in our ISO 9001: 2008 facility in Fremont, CA, undergoing stringent quality oversight enabling Arista Corporation to provide a two (2) year depot warranty for all computer products and three (3) year depot warranty for all display products. We work on the embedded long roadmap enabling 5+ years continuity of supply and support, complemented by a comprehensive stringent revision control process.

RoHS Compliance

The European Union adopted Directive 2002/95/EC in February 2003 that restricts and prohibits the use of heavy metals (lead, mercury, cadmium, and hexavalent chromium), polybrominated biphenyls (PBB) and polybrominated diphenyl ethers (PBDE) in new electrical and electronic equipment shipped after July 1, 2006. All new products under development at Arista Corporation meet the directive’s requirements. 

Conflict Minerals Sourcing Policy

Conflict minerals (columbite-tantalite, cassiterite, wolframite and gold, or their derivatives, including tantalum, tin and tungsten) originating from Democratic Republic of the Congo (DRC) are sometimes mined and sold by armed groups to finance conflict characterized by extreme levels of violence. Some of these minerals and the metals created from them can make their way into the supply chains of the products used around the world, including those in the electronics industry.

It is the policy of Arista to avoid Conflict Minerals that directly or indirectly finance or benefit armed groups in conflict affected regions. Arista is committed to sourcing components and materials from companies that share our values around human rights, ethics and environmental responsibility.

Arista expects its suppliers to commit to the EICC Code of Conduct which includes a provision related to the responsible sourcing of minerals. Pursuant to that Code of Conduct, suppliers must have a policy to reasonably assure that tantalum, tin, tungsten and gold in the products they manufacture are DRC conflict free. Arista will immediately discontinue engagement with suppliers who pose any risk supporting conflict minerals.

 Our Core Values

In a continuous pursuit of excellence, our core values include Innovation, Reliability, Agility, Integrity and Trust. ‘Talk to us. We listen.’ We listen to our customers. We then apply creativity, technology, engineering and manufacturing expertise to provide the optimum solution. We listen so we can continuously improve our products, processes and services. We listen because our objective is to work in partnership with our customers to establish a long term successful relationship…

Arista Corporation 40675 Encyclopedia Circle Fremont, CA 94538 TEL: 510-226-1800 SALES: sales@goarista.com SUPPORT: support@goarista.com RMA: rma@goarista.com

nema-enclosures-for-rugged-computer-systems-white-paper