Technical Restrictions; Personnel Qualification; Skilled Personnel - WIKA A-1200 Manual De Instrucciones

3. Safety
The model A-1200 has been developed for the pressure measurement of non-hazardous fluids, liquids and gases
(classification in accordance with Directive 2014/68/EU Article 13, Regulation (EC) No. 1272/2008, or GHS
are mainly used for cooling, lubrication, cleaning or power transmission in industrial machines.
1) Globally Harmonized System of Classification, Labelling and Packaging of Chemicals
Only use the instrument in applications that lie within its technical performance limits. The manufacturer or operator of the
machine or plant in which the product is used must ensure the compatibility of the wetted parts with the medium used.
The pressure should not be used with abrasive or unstable fluids, in particular not with hydrogen.
→ For performance limits see chapter 9 "Specifications"
Special versions for applications free of oil and grease and for oxygen use are available on request.
The mounting, dismounting, installation, parameterisation and maintenance of the model A-1200 in industrial environ-
ments absolutely requires suitably skilled personnel in accordance with chapter 3.3. "Personnel qualification".

Technical restrictions

Any permanent operation in the overload range is not permitted. Above the operating pressure, up to the overload
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limit, the pressure sensor is operating outside its specification. The overload limit is intended to prevent damage to
the pressure sensor, as part of a pressure vessel system, during the pressure containment test.
The overload pressure must never be exceeded, even when failures occur in the end-use application. Loads above
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the overload safety limit can cause irreversible damage, e.g. permanent measurement errors.
Pressure surges below the nominal pressure and shorter than 1 ms can cause measuring errors.
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For applications where pressure spikes can occur, the use of a restrictor is recommended. The restrictor narrows the
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pressure port to 0.6 mm and thus increases the resistance against pressure spikes.
With media that could block the pressure port (e.g. through particles), it is recommended to use a wider pressure
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port of 6 or 12 mm.
It must be ensured that no atomic hydrogen can form in the pressure port of the pressure sensor.
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3.3 Personnel qualification

Skilled personnel

Skilled personnel, authorised by the operator, are understood to be personnel who, based on their technical training,
knowledge of measurement and control technology and on their experience and knowledge of country-specific regula-
tions, current standards and directives, are capable of carrying out the work described and independently recognising
potential hazards.
WIKA operating instructions, pressure sensor, model A-1200
All manuals and user guides at all-guides.com
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