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2. Safety
For gaseous, liquid and aggressive media, also in aggressive environments
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With open connecting flange also suitable for contaminated and viscous media
„
Increased safety requirements for personal protection with case of safety level
„
"S3" per EN 837
EN
The instrument has been designed and built solely for the intended use described
here, and may only be used accordingly.
The manufacturer shall not be liable for claims of any type based on operation
contrary to the intended use.
2.2 Responsibility of the operator
The legibility of the marking must be observed during time in use but at least
during inspection periods of three years. If any harm of the legibility is found
please contact the manufacturer to renew the marking.
For the safety of the system, the operator is obliged to carry out an ignition source
and ignition hazard analysis. Refer to chapter 2.3 "Ignition hazards".
The responsibility for classification of zones lies with the plant manager and not
the manufacturer/supplier of the equipment.
2.3 Ignition hazards
Relevant identified ignition
hazards
Hot surfaces
Mechanically generated sparks
and hot surfaces
Stray electric currents, cathodic
corrosion protection
6
Implemented protective measures
The actual surface temperature depends on the
■
application, i.e. on the medium temperature
Temperature range marking; T range marking
■
Observation of legibility of marking
■
→ See chapter 2.6 "Labelling / Safety marks"
Low contact speed
■
Restriction of vibration
■
Selection of suitable materials
■
→ See chapter 2.7 "Special conditions for safe use
(X conditions)"
Grounding via process connection required
■
→ See chapter 2.7 "Special conditions for safe use
(X conditions)"
WIKA operating instructions pressure gauge model 4 per ATEX
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