Sellstrom DP4 Instructions De Montage, D'utilisation Et D'entretien page 6

PROTECTION LEVEL AND APPLIANCES — MEANING OF THE CODE MARKINGS
CODE
NONE
Basic use
3
Liquids
4 Coarse dust particles
5 Gas and fine dust particles.
8 Short Circuit Electric Arc
9 Molten metals and hot solids
S,F,B,A
Mechanical protection level
T
Mechanical protection level
at extremes temperatures
OCULAR MARKINGS:
• Protection class* (filters only)
• Manufacturer's identification
• Optical class
• Mechanical strength... (optional)
• Metal, liquids and hot solids resistance symbol
(if applicable)
• Fog resistance symbol
(if applicable)
• Abrasion resistance symbol
(if applicable)
*Protection class = code number followed by the ocular protection scale number separated by a dash.
DEFINITION, FRAME MARKING AND OCULARS
Mechanical Strength
CODE
None
Minimum robustness (oculars only)
S
Increased robustness
F High speed, low energy
B High speed, medium energy
A
High speed, high energy
DESIGNATION
DESCRIPTION
DESCRIPTION
Non-specific mechanical hazards and hazards derived
from ultraviolet, visible, infrared or solar radiation.
Droplets or splashes
Coarse dust particles (> 5 microns)
Gas, vapors, vaporized droplets, smoke and
< 5 microns dust particles.
Electric arc due to short circuit in the
electrical equipment
Molten metal splashes and hot solids penetration
Level of protection against mechanical impact:
S = increased robustness, F = Low Energy Impact —
45m/s, B = Medium Energy Impact — 120 m/s,
A = High Energy Impact — 190 m/s.
Mechanical resistance of the oculars at extreme
temperatures (+55 °C, -5°C); i.e. FT, BT, AT
2C-1,2
SM
2
B
8
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K
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