Improper Use; Responsibility Of The Operator With Ex Version - WIKA DMSU21SA Mode D'emploi

3. Safety
Only use the instrument in applications that lie within its technical performance limits (e.g.
max. ambient temperature, material compatibility, ...). Only operate the instrument with
media that cannot damage the wetted parts.
→ For performance limits see chapter 15 "Specifications".
Instrument versions without Ex marking are not approved for use in hazardous areas! For
instrument versions with an optional Ex approval, observe the safety instructions in this
chapter and further explosion protection instructions in these operating instructions.
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.
Should the operating instructions not be observed or complied with, approvals (e.g.
EHEDG) can become invalid.

3.3 Improper use

WARNING!
Injuries through improper use
Improper use of the instrument can lead to hazardous situations and injuries.
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Refrain from unauthorised modifications to the instrument.
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Diaphragm seal systems must not be used as a climbing aid.
Any use beyond or different to the intended use (see chapter 3.2) is considered as
improper use.

3.4 Responsibility of the operator with Ex version

For the safety of the system, the operator is obliged to carry out an ignition source
analysis. The responsibility for classification of zones lies with the plant manager and not
the manufacturer/supplier of the equipment.
These ignition sources must be taken into account for the diaphragm seal
system:
1. Hot surfaces
The surface of the diaphragm seal system can heat up due to the temperature of the
process medium. This depends on the installation situation and must be taken into
account by the operator.
WIKA operating instructions, model DMSU21A
EN
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