Improper Use - WIKA MH-4 Mode D'emploi

3. Safety
WARNING!
Physical injuries and damage to property and the environment
through exceeding the performance limits
Exceeding the performance limits can destroy the instrument and lead to
danger in the end-use application.
▶
Only use the instrument in applications that lie within its technical
performance limits. → For performance limits, such as derating
(maximum current consumption at a corresponding medium
temperature), see chapter 9 "Specifications"
▶
Any permanent operation in the overload range is not permitted. Above
the highest operating pressure permitted, up to the overload limit, the
pressure sensor is operating outside its specification. The overload
range is intended to prevent damage to the pressure sensor, as part of
a pressure vessel system, during the pressure containment test.
▶
The overload limit must never be exceeded, even when failures occur in
the end-use application.
▶
Loads above the overload limit can cause irreversible damage, which
can lead, for example, to permanent measuring errors.
▶
The manufacturer or operator of the machine or plant in which the
product is used must ensure the compatibility of the materials of the
wetted parts with the medium used.
▶
The pressure switch should not be used with abrasive or unstable
fluids, in particular not with hydrogen.
Special versions for oil and grease-free applications, as well as for use with oxygen
(dangerous fluid according to Directive 2014/68/EU Article 13, Regulation (EC)
No. 1272/2008, or GHS 1)), are available on request.
1) Globally Harmonized System of Classification, Labelling and Packaging of Chemicals
The (dis-)mounting, installation, parameterisation and maintenance of the model MH-4
in industrial environments absolutely requires suitably skilled personnel in accordance
with chapter 3.5 "Personal protective equipment".

3.3 Improper use

WARNING!
Injuries through improper use
Improper use of the instrument can lead to hazardous situations and
injuries.
▶
Refrain from unauthorised modifications to the instrument.
▶
Do not use the instrument within hazardous areas.
Any use beyond or different to the intended use is considered as improper use.
WIKA operating instructions pressure sensor, model MH-4
EN
7