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2. Safety
Relevant identified ignition
hazards
Static electricity
Static electricity for instruments
with marking pointer
Static electricity for instruments
with PTFE lining
Exothermic reactions, including
self-ignition of dusts
The materials used can be found in the instrument marking. See chapter
2.6 "Labelling / Safety marks".
On the wetted parts of the instrument, small residual amounts of the
adjustment medium (e.g. compressed air, water, oil) can adhere from
production. With increased requirements for technical cleanliness,
suitability for the application must be checked by the operator before
commissioning.
Liquid media with the property of changing the volume during solidi-
fication can damage the measuring system (e.g. water if it falls below
the freezing point).
2.4 Personnel qualification
WARNING!
Risk of injury should qualification be insufficient!
Improper handling can result in considerable injury and damage to
property.
The activities described in these operating instructions may only be
carried out by skilled personnel who have the qualifications descri-
bed below.
WIKA operating instructions pressure gauge model 4 per ATEX
Implemented protective measures
No propagating brush discharge
■
All conductive parts bonded
■
Limitation of projected area of non-conductive
■
parts
Limitation of layer thickness of non-conductive
■
parts
Grounding via process connection required
■
Description of cleaning process
■
→ See chapter 2.7 "Special conditions for safe use
(X conditions)"
Warning label for "electrostatic charging"
■
→ See chapter 2.6 "Labelling / Safety marks"
Warning label for instruments with PTFE lining
■
→ See chapter 2.6 "Labelling / Safety marks"
Provision of material data of the wetted parts for
■
the customer in order to avoid the use of critical
media
→ See chapter 2.7 "Special conditions for safe use
(X conditions)"
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