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2. Safety
2.3 Special hazards
For ignition protection Ex nA and Ex tc: The thermal tests according to IEC 60079-0:2011 26.5.1 were conducted for
the operation in the nominal pressure range.
EN
WARNING!
Observe the information given in the applicable type examination certificate and the relevant country-
specific regulations for installation and use in hazardous areas (e.g. IEC 60079-14, NEC, CEC).
Non-observance can result in serious injury and/or damage to the equipment.
WARNING!
Physical injury and damage to property caused by hair-line cracks
The service life of the pressure transmitter is limited by a maximum number of load cycles. The
maximum number depends on the pressure profile of the application (extent of change in pressure, time
of pressure rise and pressure drop, ...). Once the maximum number of load cycles has been exceeded,
it can lead to leaks through hair-line cracks, which can cause physical injury and damage to property.
Request the maximum number of load cycles from the manufacturer.
■
Replace the pressure transmitter once it has exceeded the maximum number of load cycles.
■
Take safety measures to eliminate hazards due to hair-line cracks.
■
WARNING!
For hazardous media such as oxygen, acetylene, flammable or toxic gases or liquids, and refrigeration
plants, compressors, etc., in addition to all standard regulations, the appropriate existing codes or
regulations must also be followed.
WARNING!
Residual media in the dismounted instrument can result in a risk to persons, the environment and equip-
ment. Take sufficient precautionary measures.
Do not use this instrument in safety or emergency stop devices. Incorrect use of the instrument can
result in injury.
Should a failure occur, aggressive media with extremely high temperature and under high pressure or
vacuum may be present at the instrument.
Further important safety instructions can be found in the individual chapters of these operating instruc-
tions.
8
WIKA operating instructions pressure transmitter, model IS-3
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