WIKA 4 Mode D'emploi page 14

2. Safety
11. Suitable protective measures
The operator must recognise ignition hazards and take suitable protective measu-
res. See chapter 2.2 "Responsibility of the operator".
EN
12. Description of the protection level
The operator must understand the Ex marking based on the description in chapter
2.6 "Labelling / safety marks" and observe it for their application.
13. Checking of the instrument labelling
The legibility of the marking must be observed during time in use but at least
during inspection periods of three years. See chapter 2.2 "Responsibility of the
operator".
14. Instruments with marking pointer
For instruments with marking pointer, ensure that there are no electrostatic
charging mechanisms at the marking pointer.
15. Protection against external impact
Avoid any kind of external impact. External impacts can generate sparks through
friction processes between different materials.
16. Instrument filling
The filling/refilling of instruments leads to a loss of the explosion protection and
can lead to damage to the instrument.
14 WIKA operating instructions pressure gauge model 4 per ATEX