RUGGED MOBILE COMPUTING SOLUTIONS FOR:

Integration of computing power into areas deemed a hazardous location (HazLoc) is becoming commonplace but requires specially certified and tested devices. Flammable gases, flammable liquid–produced vapors, combustible liquid–produced vapors, combustible dust, or ignitable fibers/filings present in the air are all elements, at sufficient quantity, that can ignite. Electrical equipment installed in these classified locations must be specially designed and tested to ensure it does not initiate an explosion.

Class 1, Div 1 Parameters:

(1) Ignitable concentrations of flammable gases or vapors may exist under normal operating conditions; or
(2) Ignitable concentrations of such gases or vapors may exist frequently because of repair or maintenance operations or because of leakage; or
(3) Breakdown or faulty operation of equipment or processes might release ignitable concentrations of flammable gases or vapors, and might also cause simultaneous failure of electric equipment

Class 1, Div 2 Parameters:

(1) Volatile flammable liquids or flammable gases are handled, processed or used, but the hazardous liquids, vapors or gases will normally be confined within closed containers or closed systems from which they can escape only in the event of accidental rupture or breakdown of such containers or systems, or as a result of abnormal operation of equipment; or
(2) Ignitable concentrations of gases or vapors are normally prevented by positive mechanical ventilation, and which might become hazardous through failure or abnormal operations of the ventilating equipment; or
(3) Adjacent to a Class I, Division I location, and to which ignitable concentrations of gases or vapors might occasionally be communicated unless such communication is prevented by adequate positive-pressure ventilation from a source of clean air, and effective safeguards against ventilation failure are provided