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  • Quick Start Guide... 
  • Industrial Managed Gigabit Ethernet PoE+ Switch (4-Port RJ-45, 2-Port SFP) QSG
    Quick Start Guide for the LPH2004A-2GSFP (Version 1)
 
  • Quick Start Guide... 
  • 1-Port 10/100 Device Server, RS-232/422/485, DB9 M
    (Version 1)
 
  • Manual... 
  • Hardened PoL PoE Ethernet Extender User Manual
    User Manual for the LBPS310A-KIT, LBPS311A, & LBPS312A (Version 1)
 
  • Manual... 
  • Industrial MultiPower Miniature Media Converter, 10-/100-/1000-Mbps Copper to 1000-Mbps Fiber Duplex
    (Version 1)
 
  • Quick Start Guide... 
  • WRT4000 Series Cellular Wireless Router Quick Start Guide
    Quick Start Guide for the WRT4000 Series Cellular Wireless Routers and Accessories (Version 3)
 
  • Quick Start Guide... 
  • LGH1000 Series Hardened Ethernet Switch QSG
    Quick Start Guide for the LGH1004A (Version 1)
 

The ANSI/ISA Standard and Hazardous Locations

Fires and explosions are a major safety concern in industrial plants. Electrical equipment that must be installed in these locations should be specifically designed and tested to operate under extreme... more/see it nowconditions. The hazardous location classification system was designed to promote the safe use of electrical equipment in those areas “where fire or explosion hazards may exist due to flammable gases or vapors, flammable liquids, combustible dust, or ignitable fibers of flyings.”

The NEC and CSA define hazardous locations by three classes:
Class 1: Gas or vapor hazards
Class 2: Dust hazards
Class 3: Fibers and flyings

Two divisions:
Division 1: An environment where ignitable gases, liquids, vapors or dusts can exist Division 2: Locations where ignitables are not likely to exist

Hazardous classes are further defined by groups A, B, C, D, E, F, and G:
A. Acetylene
B. Hydrogen
C. Ethlene, carbon monoxide
D. Hydrocarbons, fuels, solvents
E. Metals
F. Carbonaceous dusts including coal, carbon black, coke
G. Flour, starch, grain, combustible plastic or chemical dust

ANSI/ISA 12.12.01
Our line of Industrial Ethernet Switches (LEH1208A, LEH1208A-2GMMSC, LEH1216A and LEH1216A-2GMMSC) is fully compliant with ANSI/ISA 12.12.01, a construction standard for Nonincendive Electrical Equipment for Use in Class I and II, Division 2 and Class III, Divisions 1 and 2 Hazardous (Classified) Locations. ANSI/ISA 12.12.01-2000 is similar to UL1604, but is more stringent (for a full list of changes, see Compliance Today). UL1604 was withdrawn in 2012 and replaced with ISA 12.12.01.

The standard provides the requirements for the design, construction, and marking of electrical equipment or parts of such equipment used in Class I and Class II, Division 2 and Class III, Divisions 1 and 2 hazardous (classified) locations. This type of equipment, in normal operation, is not capable of causing ignition.

The standard establishes uniformity in test methods for determining the suitability of equipment as related to their potential to ignite to a specific flammable gas or vapor-in-air mixture, combustible dust, easily ignitable fibers, or flyings under the following ambient conditions:
a) an ambient temperature of -25°C to 40°C.
b) an oxygen concentration of not greater than 21 percent by volume.
c) a pressure of 80 kPa (0.8 bar) to 110 kPa (1.1 bar).

The standard is available for purchase at www.webstore.ansi.org. To learn more about ANSI/ISA 12.12.01 and hazardous location types, visit https://www.osha.gov/doc/outreachtraining/htmlfiles/hazloc.html. -- collapse

  • Manual... 
  • LGH1000 Series Hardened Ethernet Switch User Manual
    User Manual for the LGH1004A (Version 1)
 

Product Data Sheets (pdf)...5.8-GHz 300-Mbps Wireless Ethernet Kit

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