Specifications

METTLER TOLEDO Weigh Module Systems Handbook
(12/99)14-24
Provides a Degree of Protection Against
Atmospheres Typically Containing:*
Type 7 and 8
Enclosures**
Type 9
Enclosures**
Type
10
Class A B C D E F G 10
Acetylene I X
Hydrogen, manufactured gas I X
Diethyl ether, ethylene, cyclopropane I X
Gasoline, hexane, butane, naphtha, propane,
acetone, toluene, isoprene
IX
Metal dust II X
Carbon black, coal dust, coke dust II X
Flour, starch, grain dust II X
Fibers, flyings*** III X
Methane with or without coal dust MSHA X
*For complete listing, see NFPA 497M-1986, Classification of Gases, Vapors and Dusts for Electrical Equipment in
Hazardous (Classified) Locations.
**For Class III type ignitable fibers or combustible flyings, see the National Electrical Code, Article 500.
***Due to the characteristics of the gas, vapor, or dust, a product suitable for one Class or Group may not be suitable for
another Class or Group unless so marked on the product.
Table 14-16: Specific Applications of Enclosures for Indoor Hazardous Locations